2017 California/Southwest Weather Thread

[Guest happ]

Sunrise: 6:22 am 

Sunset: 7:49 pm

 

Day length: 13 Hours 27 Minutes and 6 Seconds

Peak Sun Angle: 68.9°

 

https://www.timeanddate.com/sun/@5379609

LA

Daylight

6:14 am – 7:39 pm

13 hours, 24 minutes

[Anti Marine Layer]

Even with the sun coming out, it is a very cool day. Some areas are having reverse clearing.

[Anti Marine Layer]

Today is the last day of 2017 that the sun angle goes above 70 for Lake Forest.

 

 

 

[Anti Marine Layer]

Del Mar Heights got a whopping 0.17" from this marine layer explosion. Only a light mist in Irvine. Could we consider this our first Pacific storm of the fall?

[Anti Marine Layer]

Things cleared out pretty nicely north of San Diego County. However, it's likely to become cloudy again before sunset.

[Guest happ]

Coolest day since mid June but maybe not record cold maximums. In-any-event, today was a great cooldown across the Southwest. If upper low reforms off SoCal next week, we could break some records. 

 

78/ 66

[Anti Marine Layer]

Two record low maximum temperatures today.

378SXUS76 KSGX 160026RERSGXRECORD EVENT REPORT...FINALNATIONAL WEATHER SERVICE SAN DIEGO CA525 PM PDT TUE AUG 15 2017...LOWEST MAXIMUM TEMPERATURE RECORDS BROKEN OR TIED ON AUG 15 2017 ...LOCATION             NEW RECORD         OLD RECORD        PERIOD OF RECORDVISTA                    71             74 IN 1990              1957EL CAJON                 76             77 IN 1987              1979

[Anti Marine Layer]

Clouds are not as thick this morning, so it's unlikely there will be much measurable precipitation, if any.

[Thunder98]

The weather was hot and humid at the beginning of the month and then it significantly cooled off and plateaued since then with near average temperatures. 

 

[Anti Marine Layer]

Smoky smell in the air this morning. Not sure where it's coming from with the strong onshore flow, but probably somewhere to the south of Orange County as the eddy can bring in the south winds.

 

Clearing is much faster this morning, but still slow for this time of year.

[Anti Marine Layer]

What's this? Dewpoints are down into the 50s.

[Thunder98]

The Sun Angle is now exactly 10 degrees lower now than it was on the Summer Solstice.

 

Orcutt, CA
June 20th: 78.6°
August 16th: 68.6°

https://www.timeanddate.com/sun/@5379609?month=6
https://www.timeanddate.com/sun/@5379609

[Guest happ]

What's this? Dewpoints are down into the 50s.

 

Dew point temps in the 50's and even minimums in the 50's where coastal clouds can't reach [Ojai: 52°].

[Thunder98]

 

[Guest happ]

NWS_Phoenix

"Last night, dewpoints around the Phoenix metro actually fell into the 
  upper 20s and dewpoints this low are rare in August; the last time 
  they were this low this time of year was in 2013. While current 
  dewpoints are still hovering the lower/middle 40s, some 30s will be 
  likely by sunset and the dry air along with the clear skies will 
  result in favorable radiational cooling conditions across much of 
  Arizona. Essentially a persistence type forecast tonight with lows 
  falling into the delightful 60s and 70s."
 

[Guest happ]

"Solar eclipse 2017: What to expect, where to see it in Los Angeles" https://la.curbed.com/2017/8/16/16085388/total-solar-eclipse-2017

 

"What time does the eclipse start in Los Angeles?

 

It will happen rather slowly, over about a 2.5-hour period, starting at 9:05 a.m.

Experts expect it will peak here just before 10:22 a.m. “At that point the sun will kind of look like a tilted smile in the sky,” E.C. Krupp, director of Griffith Observatory, told the Los Angeles Times. It will be over by 11:45 a.m."

[Guest happ]

Perfectly comfortable mid-October conditions today.

 

82/ 65

[Anti Marine Layer]

Smoky smell this morning came from Camp Pendleton. Must have been really bad overnight because this morning my office smelled worse than outside. Unusual to have a fire start overnight with a deep marine layer, but it's 80 percent contained this evening.

[Guest happ]

Cool clear morning.

 

lo 63

[Thunder98]

Do you remember October 2012? The Temperatures were bipolar that month and it was exciting to see days of 90's and 100 degree days and have cool cloudy weather in the 60's with light rain and drizzle.

 

[Anti Marine Layer]

This year we had a brief period of May Gray/June Gloom followed by a very hot second half of June, a brief cool down in early July, followed by very hot and humid weather for and first few days of August with an active monsoon. Since then we have been dominated by troughs and an inactive monsoon, much like most of last summer.

 

This morning was only partly cloudy with low clouds, but they had the appearance of a marine layer at least 2000 ft. deep.

[Thunder98]

This year we had a brief period of May Gray/June Gloom followed by a very hot second half of June, a brief cool down in early July, followed by very hot and humid weather for and first few days of August with an active monsoon. Since then we have been dominated by troughs and an inactive monsoon, much like most of last summer.

 

This morning was only partly cloudy with low clouds, but they had the appearance of a marine layer at least 2000 ft. deep.

 

I think we will see another wet Winter this year.

[Anti Marine Layer]

Yesterday was one of those rare days that some beaches cleared out before the mountain passes.

 

 

 

[DareDuck]

This year we had a brief period of May Gray/June Gloom followed by a very hot second half of June, a brief cool down in early July, followed by very hot and humid weather for and first few days of August with an active monsoon. Since then we have been dominated by troughs and an inactive monsoon, much like most of last summer.

 

This morning was only partly cloudy with low clouds, but they had the appearance of a marine layer at least 2000 ft. deep.

Sounds exactly like every summer I lived there.

[Anti Marine Layer]

Looks like solar eclipse on Monday morning could be blocked out by marine layer, but thin marine layer clouds that you can just barely see the sun through could have the same filtering effect as eclipse glasses.

 

Unfortunately I will be in Cancun the day of the eclipse. I am flying there early Saturday morning and returning the following Saturday.

[richard mann]

(.. cross-reference.)

 

http://theweatherforums.com/index.php/topic/1582-summer-2017-colder-air-mass-movement-and-distribution-projections/?p=250882

[Guest happ]

Getting active again over Arizona; hopefully some of that instability will shift westward this weekend.

 

Thursday: 85/ 63

[Anti Marine Layer]

It is another day that feels more like October than August.

[Thunder98]

ZZZZZZZZZZZZ!

[Guest happ]

If the monsoon is not available then it is better to have troughs than ridges

 

84/ 64

[Guest happ]

More action in the Sierra than Arizona today

 

 

[Anti Marine Layer]

Not sure why Camp Pendleton (57 F) has been consistently much cooler than other San Diego Coastal areas (mostly mid to upper 60s), but it's been like that for a long time

 

 

SAN DIEGO HOURLY WEATHER ROUNDUP
NATIONAL WEATHER SERVICE SAN DIEGO CA
1000 PM PDT FRI AUG 18 2017

NOTE: "FAIR" INDICATES FEW OR NO CLOUDS BELOW 12,000 FEET WITH NO
SIGNIFICANT WEATHER AND/OR OBSTRUCTIONS TO VISIBILITY.

CAZ042-043-060-061-PZZ750-775-190600-

GREATER SAN DIEGO AREA

CITY SKY/WX TMP DP RH WIND PRES REMARKS
SAN DIEGO AP FAIR 69 62 78 N7 29.98S
NATIONAL CITY N/A 68 63 83 N3 29.99R
IMPERIAL BEACH FAIR 68 61 78 NW7 29.97S
BROWN FIELD FAIR 65 62 90 CALM 29.97S FOG
MIRAMAR MCAS FAIR 67 60 78 CALM 29.98R
MONTGOMERY FLD FAIR 69 61 75 NW5 29.98R
GILLESPIE FLD FAIR 66 61 82 W7 29.98R

$

NORTH SAN DIEGO COUNTY

CITY SKY/WX TMP DP RH WIND PRES REMARKS
CAMP PENDLETON FAIR 57 55 93 CALM 29.96R
OCEANSIDE AP FAIR 68 63 84 W6 29.96S
OCEANSIDE HBR N/A 67 64 89 NW8 29.99R
VISTA N/A 66 61 83 CALM 29.94R
CARLSBAD CLOUDY 68 63 84 VRB3 29.96S
DEL MAR N/A 68 63 85 CALM 29.98S
LA JOLLA SCRIP N/A 67 64 91 NW3 29.96R
FALLBROOK N/A 65 65 99 CALM 29.97R
ESCONDIDO N/A 68 62 82 CALM 29.98R
POWAY N/A 65 60 81 CALM 29.98R

[Anti Marine Layer]

It is exceptionally gloomy this morning, which probably means no sun for the beaches, and clouds not clearing to the coast until noon. My forecast time for the clouds breaking up here in Lake Forest is 10:30 am, which is about the same time as the maximum eclipse on Monday.

 

Also the trip to Cancun has been cancelled because a hurricane is supposed to hit this week according to one of the forecast models.

 

No the real reason is my dad found some article last night about evil Mexican "policemen" who hate American tourists and demand large amounts of money or even threaten to take them to jail. He really could have found that thing weeks ago and discussed it instead of screwing up our vacation plans the night before we were supposed to leave. :(

 

Wikipedia

 

 

A significant number of United States citizens visit Mexico; the U.S. State Department estimates it at 15 to 16 million per year.^[36] Tourists visiting Mexico may face a number of problems related to criminal activity, including:

• Extortion by law enforcement and other officials.
• Kidnappings, particularly in northern border cities.
• Taxi robberies and armed robbery.
• Purse-snatching and pickpocketing.

Due to crime reaching a critical level in Mexico City and many other areas, tourism to Mexico has suffered.^[37]

Recently, Verdugo-Yepes, Pedroni and Hu (^[38]) applies a panel structural vector autoregression model to model the effects of crime on GDP growth and foreign direct investment (FDI) at the state and national level.

 

But a hurricane still could hit if the forecast models are wrong.

[Guest happ]

Nothing tropical but there is an outside chance of mountain thunderstorms this weekend 

NWS_SD

[Anti Marine Layer]

AFDLOX is not updating, but according to AFDSGX, marine layer depth has already neared 3000 ft this morning. Normally that would bring clouds to the entire Inland Empire. Still looking like my forecast clearing time of 10:30 AM could be pretty accurate.

[Guest happ]

Not sure why Camp Pendleton (57 F) has been consistently much cooler than other San Diego Coastal areas (mostly mid to upper 60s), but it's been like that for a long time

 

The Pendleton station is generally warmer than Oceanside AP and Harbor; probably a malfunction. This station was reporting 33° dew points during humid period earlier in the month.

 

[Guest happ]

AFDLOX is not updating, but according to AFDSGX, marine layer depth has already neared 3000 ft this morning. Normally that would bring clouds to the entire Inland Empire. Still looking like my forecast clearing time of 10:30 AM could be pretty accurate.

 

It has been clear for over an hour here

[Anti Marine Layer]

Pretty accurate indeed on the Fogust burn off time here. Picture taken from my phone at 10:30 AM.

 

 

Plans have been changed to go to Westin Rancho Mirage for 4 nights and Welk Resort San Diego for 3 nights.

[Guest happ]

Pretty accurate indeed on the Fogust burn off time here. Picture taken from my phone at 10:30 AM.

 

FogustBurnOff1030am.png

 

Plans have been changed to go to Westin Rancho Mirage for 4 nights and Welk Resort San Diego for 3 nights.

 

Orange county marine layer pattern follows the eddy circulation meaning more stratus than LA but less than San Diego.   

[Guest happ]

Noticed this cell off to the northwest today

 

86/ 65