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2022-2023 California and Southwest Weather Thread

Thunder98

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Found this too. 2010 recap.

JANUARY

The year started out warm and dry and despite the El Nino, it looked like another year of below average rainfall and drought was to come. At John Wayne Airport, no rain was reported until the 13th, and even that was a weak storm with a measly 0.05". Out of the first 15 days of the month, 12 of them had high temperatures in the 70s. However, in the second half of the month, things changed dramatically. A very deep Pacific trough developed bringing in a series of strong cold fronts from the 17th through the 22nd. The wettest day for John Wayne Airport was the 18th, with a rainfall total of 1.92", but 2 other days had rainfall totals of an inch or higher.  Around the 19th, violent thunderstorms brought high winds, hail, and roof damage to houses in Long Beach. In addition, many areas experienced flooding and the burn areas had mudslides. The total rainfall for this series of fronts at John Wayne Airport was 6.03". Almost all Southern California locations had above normal rainfall for the water year to date once the weather calmed down. Another much smaller storm brought more rain on the 26th, but the rest of the month ended on a cool, dry note.

FEBRUARY

February was not too exciting, especially after the January deluge. The 2 wettest days were the 6th and the 27th, both of which brought over an inch of rain to John Wayne Airport. A few other days got smaller amounts. In the middle of the month, offshore flow brought temperatures in the 70s from the 13th through the 17th, but most of the month was cooler than normal.

MARCH

March started out mainly cool and dry. A few small storms came through between the 3rd and the 7th, but this series of storms did not even amount to half an inch in most areas of Orange County. The rest of the month had no measurable rain at John Wayne Airport. High pressure brought summerlike temperatures from the 15th through the 17th and the 27th through the 28th. Weaker high pressure brought temperatures in the 70s from the 18th through the 21st.  

APRIL

The first full month of Spring was mainly cool and dry. The wettest day was the 12th, which got 0.82" at John Wayne Airport. A cold Gulf of Alaska system moved in on the 22nd bringing low snow levels and a high of only 59 degrees and a rainfall total of 0.19" for John Wayne Airport. 

MAY

May continued the very cool Spring. Throughout the month a few late season storms hit Southern California. The most interesting storm came in on the 23rd. This Gulf of Alaska system brought very little precipitation, but plenty of cold air and winds. There was even  a dusting of snow reported at the Grapevine. During the middle of the day a convective shower dropped the temperature down to an insanely low 59 degrees in Palm Springs. It later recovered for a high of only 70 degrees in Palm Springs that day, which is about 20 degrees below normal. The weather warmed up some but continued cool all the way through the 28th. On Memorial Day weekend the trough responsible for all the cool to cold weather moved out and brought a very late season Santa Ana wind event. It also brought the first warm weather to the coast in over a month. The infamous May Gray did not make much of an appearance because the troughs were simply too cold to support a good marine inversion.

JUNE

June was another cool month but no major storm systems came through. It was warmer than May in most areas, but despite the cool weather, there was less June Gloom than some Junes of the past 10 years. San Diego reached no higher than 71 degrees the whole entire month due to abnormally cold ocean waters. Most Southern California locations ended the 2009-2010 water year with above normal rainfall for the first time in years.

JULY

Below normal temperatures continued for much of July due to cold ocean waters and persistent troughs off the California coast. From the 5th through the 8th the trough was at its strongest causing a very deep marine layer.  On the 6th, which was the coldest day in many areas , measurable rain fell from the marine layer in locations along the coastal plain with Laguna Beach and Dana Point both recording an amazing 0.12". Many inland locations such as Riverside and Temecula did not see the sun until mid afternoon and most of the coastal plain stayed overcast all day. Lake Forest, which is about 10 miles inland had a winter-like high temperature of only 63 degrees! The rain and drizzle continued on the 7th and 8th, but those days had slightly better clearing with the sun coming out by late afternoon in Orange County coastal areas. During this marine layer event, San Diego tied its coldest high temperature ever recorded for July at 64 degrees on the 8th. On the same day, LA Airport set a new record for the coldest high temperature in July at 65 degrees. In most coastal locations, the first 10 days of July ended up much colder than the first 10 days of January!  By the 9th, the Four Corners High finally began to establish itself, bringing warmer weather and the first taste of monsoonal moisture to Southern California, but many beaches still struggled to clear. The high pressure grew stronger the following week causing light offshore flow and the marine layer clouds over the ocean mysteriously vanished  to far offshore. This caused the first heat wave of the summer from the 13th through the 17th. During the middle of the heat wave, monsoonal moisture spread west of the mountains bringing rain and thunder to some coastal areas and inland valleys. However, the trough pattern returned for the end of the month causing cold weather and persistent overcast at most beaches. San Diego only had 7 days of the month in which the temperature reached 70 degrees or higher. The month ended in San Diego with an average high of only 69.39 degrees, which was the coldest since 1916. The average temperature for the month was also the lowest since 1933.      

 AUGUST

August continued the cool summer, especially near the beaches bringing many more days of record low maximum temperatures. At some points the sea surface temperatures dropped as low as 53 degrees, which would be chilly even for the winter, but for most of the month water temperatures averaged in the low to mid 60s. Towards the middle of the month, the Four Corners ridge strengthened to bring periods of hot weather and monsoonal moisture, but this did not last very long. By the end of the month, a deep trough moved in and spread the marine layer to the coastal slopes bringing cool weather and reverse clearing. San Diego tied its coldest high temperature for August at 66 degrees on the 28th. This trough moved out by the last day of the month bringing slightly warmer weather. 

SEPTEMBER

During the first few days of the month, high pressure strengthened, but not enough to eliminate the marine layer at the beaches. Around the 3rd and the 4th, inland areas of Orange County had highs in the 90s and the Inland Empire had highs of over 100 degrees, but at the beaches it was a different story. Santa Monica Pier had dense fog and failed to reach 60 degrees. The high pressure weakened quickly and another very strong trough moved in between the 7th and the 9th. This brought a deep marine layer of about 4000 feet with light rain and drizzle all the way to the coastal slopes. Many places far inland saw highs in the mid 60s to low 70s. Even Palm Springs cooled down due to the marine layer influence causing cool winds through the Banning Pass. On the 8th, the high temperature there was only 88 degrees and marine layer clouds were visible in the pass from Cathedral City. Things warmed up slightly during the middle of the month, but right before the Fall Equinox yet another through brought a deep marine layer and cool temperatures. In many areas west of the mountains, the summer ended up being the coldest since 1933. Many beach residents complained that there was no summer at all. Record low maximum temperatures were reported along the coast more than 50 days of the summer. However, just as Fall arrived, summer came in with a vengeance.   Strong high pressure and offshore flow brought hot weather all the way to the coast. The heat wave peaked on the 26th and 27th. On the 27th, San Diego topped out at 95 degrees, which was 13 degrees warmer than their maximum summer high of 82, but other places were much hotter.  Downtown L.A. had its highest temperature ever recorded at 113 degrees! Even the normally cool L.A. Airport reached 105 degrees. Fullerton was 112 degrees and John Wayne Airport was 110. After the 27th the high weakened slightly and brought in late season monsoonal moisture and hot, muggy weather with a few light showers.  During the Spring and Summer, a fairly strong El Nino quickly transitioned to a fairly strong La Nina. Water temperatures near the equator and off the Pacific Coast plummeted at near record rates, which some meteorologists blame for the cool spring and summer. 

OCTOBER

The first two days of October were hot and humid, bringing more monsoonal moisture, which had been absent for much of the summer, but it was not long before the weather pattern changed dramatically. By the 4th, the marine layer began to deepen due to an approaching cutoff low. By the 6th the cutoff low had moved through, but not before dropping 0.59" of rain at John Wayne Airport. The 4th and 5th also had measurable rain from the deep marine layer. The same cutoff low brought supercell thunderstorms with tennis ball sized hail to Phoenix. After the low moved out, another mini heat wave from the 8th through the 10th peeked on the 10th with a high of 91 at John Wayne Airport. The weather was warm through about the 15th before the marine layer began deepening ahead of another slow moving cutoff low. After a few days of drizzle and light rain, the low finally moved through on the 19th, bringing heavy rain, flooding, and thunderstorms to  Southern California. John Wayne Airport picked up 1.15" of rain that day. Even Palm Springs got 0.39". Smaller storms blew through during the last 10 days of the month, bringing more rain, but another period of warm to hot weather occurred between the 27th and 29th. Due to the cutoff lows and early season rain, hills began to get green by the end of the month, which was quite a difference from the dryness and fires of the past few years. Also, San Diego recorded its fourth wettest October on record and all Southern California locations were above average in rainfall for the 2010-2011 water year.

 NOVEMBER

At the beginning of the month, strong high pressure brought offshore flow and an amazing heat wave. The heat wave peeked on the 3rd and the 4th, with high temperatures mostly in the upper 90s in the coastal areas, but some locations topped 100 degrees. John Wayne Airport was 100 degrees on both days. On the 4th, even San Diego reached 100 degrees, which was not only the highest temperature there for all of 2010, but also the first time in November that it had ever reached 100 degrees there. Hot temperatures continued on the 5th and the 6th, but not nearly as hot as the previous two days. Onshore flow cooled things off by the 7th, but during the 11th through the 15th, more offshore flow brought highs in the 70s and 80s to most of Southern California. A pattern change occurred after the 19th and a storm system brought about half an inch of rain to Orange County from the 20th through the 21st. The rest of the month was mainly cool and dry as a deep trough brought an Arctic air mass to the Southland. A small storm brought some rain a few days after Thanksgiving.

DECEMBER

December started warm and mainly dry, except for a storm system on the 4th and 5th which brought about half an inch of rain to some areas west of the mountains. A short period of warm to hot weather occurred, from the 11th to the 13th. The hottest day was the 12th, in which some areas of the coastal plain had temperatures in the low 90s. San Diego reached 83 degrees, which was warmer than any day of the summer there! This occurred just 9 days before the shortest day of the year! By the 14th, however, the marine layer began deepening ahead of an approaching cold front and some coastal locations failed to reach 60 degrees. San Diego reached 60 degrees, but was 21 degrees colder on the 14th than the 13th. A deep marine layer brought some drizzle on the 15th and the front brought about a tenth of an inch of rain the next day before moving out by midday. The sunshine however, would not last long as a much stronger storm arrived by the next day. This storm had a pineapple connection with abundant subtropical moisture, which is quite unusual for a La Nina year. Friday the 17th started with sprinkles in the early morning for Orange and L.A. counties, but the rest of the day had persistent light to moderate rain. Light rain continued for much of Saturday and started to get heavier in the evening. By Sunday afternoon, most of Orange County got moderate to heavy rain, but San Diego remained dry. The nonstop rain continued Sunday night, getting heavier over Orange County and finally starting to spread into San Diego County. Moderate to heavy rain continued throughout the day on Monday, intensifying in the afternoon and flooding the streets of L.A. and Orange Counties. It also got heavier in San Diego, but northern areas were still getting the brunt of the system. Heavy rain continued in Orange County through the evening as the tropical moisture plume moved south. By late Monday night, the most intense rainfall shifted to San Diego County, but moderate to heavy rain continued throughout the night in Orange County. On Tuesday, the low pressure area responsible for drawing in all of the subtropical moisture finally began to move east and slowly pushed away the moisture plume. L.A. and Orange counties finally got a small break in the rain while heavier rain continued over San Diego. By late afternoon, however, colder air from the north began to interact with the remaining tropical moisture causing more heavy rain. The rain got  heavier again a few hours after sunset and continued very heavy throughout the whole night . The most intense rainfall of the entire storm came a few hours after midnight, and was more like an El Nino storm than a La Nina. Laguna Beach and Highland had major flooding, with many houses in Highland being buried under a few feet of muddy water.  On Wednesday morning, streets in Lake Forest were flooded and full of mud that seemed to come from nowhere. Even Palm Springs had picked up over 2 inches of rain overnight. The front finally moved through early Wednesday morning, giving many areas their first sunshine since the previous Thursday. Convective showers continued throughout the day Wednesday and in the afternoon, strong thunderstorms hit L.A with more heavy rain, strong winds, and hail. However, the day ended with sunshine and beautiful rainbows. Most of the coastal areas got a total of 7 to 10 inches of rain from the storm once it was all said and done, but some of the mountain slopes got up to 26 inches! After a few dry days, another fairly strong cold front moved through on Christmas night bringing about another half an inch of rain. After a few warm and sunny days, another front on the 29th brought almost an inch to most places west of the mountains. Following the front an arctic air mass moved in, causing damaging winds of up to 90 mph in some areas, knocking down trees onto cars and power lines, and bringing low temperatures in the 30s for much of the coastal areas and 20s to the Inland Empire. The last two days of the year were cold and dry, but  John Wayne Airport ended the year of 2010 with a total of 24.52", easing years of drought. By the end of the month, the airport had 12.65" for the water year to date, just 0.11" below the annual average. Other locations have already received more rain for the water year to date than the annual average, which is pretty amazing for a strong La Nina.

  

 

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Thunder98 Grand Master

Thunder98

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2 hours ago, Mr Marine Layer said:

Found this too. 2010 recap.

JANUARY

The year started out warm and dry and despite the El Nino, it looked like another year of below average rainfall and drought was to come. At John Wayne Airport, no rain was reported until the 13th, and even that was a weak storm with a measly 0.05". Out of the first 15 days of the month, 12 of them had high temperatures in the 70s. However, in the second half of the month, things changed dramatically. A very deep Pacific trough developed bringing in a series of strong cold fronts from the 17th through the 22nd. The wettest day for John Wayne Airport was the 18th, with a rainfall total of 1.92", but 2 other days had rainfall totals of an inch or higher.  Around the 19th, violent thunderstorms brought high winds, hail, and roof damage to houses in Long Beach. In addition, many areas experienced flooding and the burn areas had mudslides. The total rainfall for this series of fronts at John Wayne Airport was 6.03". Almost all Southern California locations had above normal rainfall for the water year to date once the weather calmed down. Another much smaller storm brought more rain on the 26th, but the rest of the month ended on a cool, dry note.

FEBRUARY

February was not too exciting, especially after the January deluge. The 2 wettest days were the 6th and the 27th, both of which brought over an inch of rain to John Wayne Airport. A few other days got smaller amounts. In the middle of the month, offshore flow brought temperatures in the 70s from the 13th through the 17th, but most of the month was cooler than normal.

MARCH

March started out mainly cool and dry. A few small storms came through between the 3rd and the 7th, but this series of storms did not even amount to half an inch in most areas of Orange County. The rest of the month had no measurable rain at John Wayne Airport. High pressure brought summerlike temperatures from the 15th through the 17th and the 27th through the 28th. Weaker high pressure brought temperatures in the 70s from the 18th through the 21st.  

APRIL

The first full month of Spring was mainly cool and dry. The wettest day was the 12th, which got 0.82" at John Wayne Airport. A cold Gulf of Alaska system moved in on the 22nd bringing low snow levels and a high of only 59 degrees and a rainfall total of 0.19" for John Wayne Airport. 

MAY

May continued the very cool Spring. Throughout the month a few late season storms hit Southern California. The most interesting storm came in on the 23rd. This Gulf of Alaska system brought very little precipitation, but plenty of cold air and winds. There was even  a dusting of snow reported at the Grapevine. During the middle of the day a convective shower dropped the temperature down to an insanely low 59 degrees in Palm Springs. It later recovered for a high of only 70 degrees in Palm Springs that day, which is about 20 degrees below normal. The weather warmed up some but continued cool all the way through the 28th. On Memorial Day weekend the trough responsible for all the cool to cold weather moved out and brought a very late season Santa Ana wind event. It also brought the first warm weather to the coast in over a month. The infamous May Gray did not make much of an appearance because the troughs were simply too cold to support a good marine inversion.

JUNE

June was another cool month but no major storm systems came through. It was warmer than May in most areas, but despite the cool weather, there was less June Gloom than some Junes of the past 10 years. San Diego reached no higher than 71 degrees the whole entire month due to abnormally cold ocean waters. Most Southern California locations ended the 2009-2010 water year with above normal rainfall for the first time in years.

JULY

Below normal temperatures continued for much of July due to cold ocean waters and persistent troughs off the California coast. From the 5th through the 8th the trough was at its strongest causing a very deep marine layer.  On the 6th, which was the coldest day in many areas , measurable rain fell from the marine layer in locations along the coastal plain with Laguna Beach and Dana Point both recording an amazing 0.12". Many inland locations such as Riverside and Temecula did not see the sun until mid afternoon and most of the coastal plain stayed overcast all day. Lake Forest, which is about 10 miles inland had a winter-like high temperature of only 63 degrees! The rain and drizzle continued on the 7th and 8th, but those days had slightly better clearing with the sun coming out by late afternoon in Orange County coastal areas. During this marine layer event, San Diego tied its coldest high temperature ever recorded for July at 64 degrees on the 8th. On the same day, LA Airport set a new record for the coldest high temperature in July at 65 degrees. In most coastal locations, the first 10 days of July ended up much colder than the first 10 days of January!  By the 9th, the Four Corners High finally began to establish itself, bringing warmer weather and the first taste of monsoonal moisture to Southern California, but many beaches still struggled to clear. The high pressure grew stronger the following week causing light offshore flow and the marine layer clouds over the ocean mysteriously vanished  to far offshore. This caused the first heat wave of the summer from the 13th through the 17th. During the middle of the heat wave, monsoonal moisture spread west of the mountains bringing rain and thunder to some coastal areas and inland valleys. However, the trough pattern returned for the end of the month causing cold weather and persistent overcast at most beaches. San Diego only had 7 days of the month in which the temperature reached 70 degrees or higher. The month ended in San Diego with an average high of only 69.39 degrees, which was the coldest since 1916. The average temperature for the month was also the lowest since 1933.      

 AUGUST

August continued the cool summer, especially near the beaches bringing many more days of record low maximum temperatures. At some points the sea surface temperatures dropped as low as 53 degrees, which would be chilly even for the winter, but for most of the month water temperatures averaged in the low to mid 60s. Towards the middle of the month, the Four Corners ridge strengthened to bring periods of hot weather and monsoonal moisture, but this did not last very long. By the end of the month, a deep trough moved in and spread the marine layer to the coastal slopes bringing cool weather and reverse clearing. San Diego tied its coldest high temperature for August at 66 degrees on the 28th. This trough moved out by the last day of the month bringing slightly warmer weather. 

SEPTEMBER

During the first few days of the month, high pressure strengthened, but not enough to eliminate the marine layer at the beaches. Around the 3rd and the 4th, inland areas of Orange County had highs in the 90s and the Inland Empire had highs of over 100 degrees, but at the beaches it was a different story. Santa Monica Pier had dense fog and failed to reach 60 degrees. The high pressure weakened quickly and another very strong trough moved in between the 7th and the 9th. This brought a deep marine layer of about 4000 feet with light rain and drizzle all the way to the coastal slopes. Many places far inland saw highs in the mid 60s to low 70s. Even Palm Springs cooled down due to the marine layer influence causing cool winds through the Banning Pass. On the 8th, the high temperature there was only 88 degrees and marine layer clouds were visible in the pass from Cathedral City. Things warmed up slightly during the middle of the month, but right before the Fall Equinox yet another through brought a deep marine layer and cool temperatures. In many areas west of the mountains, the summer ended up being the coldest since 1933. Many beach residents complained that there was no summer at all. Record low maximum temperatures were reported along the coast more than 50 days of the summer. However, just as Fall arrived, summer came in with a vengeance.   Strong high pressure and offshore flow brought hot weather all the way to the coast. The heat wave peaked on the 26th and 27th. On the 27th, San Diego topped out at 95 degrees, which was 13 degrees warmer than their maximum summer high of 82, but other places were much hotter.  Downtown L.A. had its highest temperature ever recorded at 113 degrees! Even the normally cool L.A. Airport reached 105 degrees. Fullerton was 112 degrees and John Wayne Airport was 110. After the 27th the high weakened slightly and brought in late season monsoonal moisture and hot, muggy weather with a few light showers.  During the Spring and Summer, a fairly strong El Nino quickly transitioned to a fairly strong La Nina. Water temperatures near the equator and off the Pacific Coast plummeted at near record rates, which some meteorologists blame for the cool spring and summer. 

OCTOBER

The first two days of October were hot and humid, bringing more monsoonal moisture, which had been absent for much of the summer, but it was not long before the weather pattern changed dramatically. By the 4th, the marine layer began to deepen due to an approaching cutoff low. By the 6th the cutoff low had moved through, but not before dropping 0.59" of rain at John Wayne Airport. The 4th and 5th also had measurable rain from the deep marine layer. The same cutoff low brought supercell thunderstorms with tennis ball sized hail to Phoenix. After the low moved out, another mini heat wave from the 8th through the 10th peeked on the 10th with a high of 91 at John Wayne Airport. The weather was warm through about the 15th before the marine layer began deepening ahead of another slow moving cutoff low. After a few days of drizzle and light rain, the low finally moved through on the 19th, bringing heavy rain, flooding, and thunderstorms to  Southern California. John Wayne Airport picked up 1.15" of rain that day. Even Palm Springs got 0.39". Smaller storms blew through during the last 10 days of the month, bringing more rain, but another period of warm to hot weather occurred between the 27th and 29th. Due to the cutoff lows and early season rain, hills began to get green by the end of the month, which was quite a difference from the dryness and fires of the past few years. Also, San Diego recorded its fourth wettest October on record and all Southern California locations were above average in rainfall for the 2010-2011 water year.

 NOVEMBER

At the beginning of the month, strong high pressure brought offshore flow and an amazing heat wave. The heat wave peeked on the 3rd and the 4th, with high temperatures mostly in the upper 90s in the coastal areas, but some locations topped 100 degrees. John Wayne Airport was 100 degrees on both days. On the 4th, even San Diego reached 100 degrees, which was not only the highest temperature there for all of 2010, but also the first time in November that it had ever reached 100 degrees there. Hot temperatures continued on the 5th and the 6th, but not nearly as hot as the previous two days. Onshore flow cooled things off by the 7th, but during the 11th through the 15th, more offshore flow brought highs in the 70s and 80s to most of Southern California. A pattern change occurred after the 19th and a storm system brought about half an inch of rain to Orange County from the 20th through the 21st. The rest of the month was mainly cool and dry as a deep trough brought an Arctic air mass to the Southland. A small storm brought some rain a few days after Thanksgiving.

DECEMBER

December started warm and mainly dry, except for a storm system on the 4th and 5th which brought about half an inch of rain to some areas west of the mountains. A short period of warm to hot weather occurred, from the 11th to the 13th. The hottest day was the 12th, in which some areas of the coastal plain had temperatures in the low 90s. San Diego reached 83 degrees, which was warmer than any day of the summer there! This occurred just 9 days before the shortest day of the year! By the 14th, however, the marine layer began deepening ahead of an approaching cold front and some coastal locations failed to reach 60 degrees. San Diego reached 60 degrees, but was 21 degrees colder on the 14th than the 13th. A deep marine layer brought some drizzle on the 15th and the front brought about a tenth of an inch of rain the next day before moving out by midday. The sunshine however, would not last long as a much stronger storm arrived by the next day. This storm had a pineapple connection with abundant subtropical moisture, which is quite unusual for a La Nina year. Friday the 17th started with sprinkles in the early morning for Orange and L.A. counties, but the rest of the day had persistent light to moderate rain. Light rain continued for much of Saturday and started to get heavier in the evening. By Sunday afternoon, most of Orange County got moderate to heavy rain, but San Diego remained dry. The nonstop rain continued Sunday night, getting heavier over Orange County and finally starting to spread into San Diego County. Moderate to heavy rain continued throughout the day on Monday, intensifying in the afternoon and flooding the streets of L.A. and Orange Counties. It also got heavier in San Diego, but northern areas were still getting the brunt of the system. Heavy rain continued in Orange County through the evening as the tropical moisture plume moved south. By late Monday night, the most intense rainfall shifted to San Diego County, but moderate to heavy rain continued throughout the night in Orange County. On Tuesday, the low pressure area responsible for drawing in all of the subtropical moisture finally began to move east and slowly pushed away the moisture plume. L.A. and Orange counties finally got a small break in the rain while heavier rain continued over San Diego. By late afternoon, however, colder air from the north began to interact with the remaining tropical moisture causing more heavy rain. The rain got  heavier again a few hours after sunset and continued very heavy throughout the whole night . The most intense rainfall of the entire storm came a few hours after midnight, and was more like an El Nino storm than a La Nina. Laguna Beach and Highland had major flooding, with many houses in Highland being buried under a few feet of muddy water.  On Wednesday morning, streets in Lake Forest were flooded and full of mud that seemed to come from nowhere. Even Palm Springs had picked up over 2 inches of rain overnight. The front finally moved through early Wednesday morning, giving many areas their first sunshine since the previous Thursday. Convective showers continued throughout the day Wednesday and in the afternoon, strong thunderstorms hit L.A with more heavy rain, strong winds, and hail. However, the day ended with sunshine and beautiful rainbows. Most of the coastal areas got a total of 7 to 10 inches of rain from the storm once it was all said and done, but some of the mountain slopes got up to 26 inches! After a few dry days, another fairly strong cold front moved through on Christmas night bringing about another half an inch of rain. After a few warm and sunny days, another front on the 29th brought almost an inch to most places west of the mountains. Following the front an arctic air mass moved in, causing damaging winds of up to 90 mph in some areas, knocking down trees onto cars and power lines, and bringing low temperatures in the 30s for much of the coastal areas and 20s to the Inland Empire. The last two days of the year were cold and dry, but  John Wayne Airport ended the year of 2010 with a total of 24.52", easing years of drought. By the end of the month, the airport had 12.65" for the water year to date, just 0.11" below the annual average. Other locations have already received more rain for the water year to date than the annual average, which is pretty amazing for a strong La Nina.

  

 

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