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2018 California/Southwest Weather Thread

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#2101
Mr Marine Layer

Posted 16 December 2018 - 03:19 PM

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Not quite as warm today as yesterday, but still very nice.

#2102
Mr Marine Layer

Posted 16 December 2018 - 04:49 PM

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We were just a little bit more than .10 degrees away from the lowest midday sun angle at solar noon today.

 

There's a chance Fullerton Airport could be warmer for the winter solstice next Friday than it was on the summer solstice. More likely closer to the beach.



#2103
Thunder98

Posted 17 December 2018 - 06:01 AM

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Can’t wait until the sun angles gets higher again and the days getting longer.

#2104
Thunder98

Posted 17 December 2018 - 07:53 AM

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Storm total is 0.31". Just as expected. Not a bust either!

 

 



#2105
Mr Marine Layer

Posted 17 December 2018 - 08:36 PM

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Rain has started to fall, and it's pretty heavy, but unlikely to last very long.



#2106
Mr Marine Layer

Posted 18 December 2018 - 09:40 PM

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A few places got measurable rain yesterday. Huntington Beach at 0.03" and Lake Forest at 0.02" were among the top places.

We have had May Gray and June Gloom events with more rain than this past "storm".

#2107
Mr Marine Layer

Posted 19 December 2018 - 04:53 PM

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Lake Forest sunset tonight is about the same as one month ago (within a few seconds), but the sunrise is about 23 minutes later. On the solstice, sunset and sunrise will both be about one half minute later than on the previous day, pretty much anywhere south of the Arctic Circle.

Saddleback Mountain was noticeably lighter today at 4:45 PM than in early December.

Nice day today, but the afternoon cooled down quickly.

#2108
Mr Marine Layer

Posted 20 December 2018 - 05:36 PM

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The Winter Solstice (2:23 PM PST on 12/21/2018) is nearing, with a maximum solar declination of around 23.43562 S. Not much change in the declination left at all, and that's why it translates to "the sun stands still".

 

Also notice the second component of the analemma (Equation of Time) is changing about as fast as it does any time of the year, so despite the least daylight tomorrow, we have the longest solar days of the year now.

 

Time and Date: 12/20/2018 5:38:03 PM

Solar Declination: 23.43269 S

Equation of Time: 2.15

Minutes for Solar Declination to change by .01: 2123.06

Minutes for Equation of Time to change by .01: 29.09



#2109
TT-SEA

Posted 20 December 2018 - 06:22 PM

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The Winter Solstice (2:23 PM PST on 12/21/2018) is nearing, with a maximum solar declination of around 23.43562 S. Not much change in the declination left at all, and that's why it translates to "the sun stands still".

 

Also notice the second component of the analemma (Equation of Time) is changing about as fast as it does any time of the year, so despite the least daylight tomorrow, we have the longest solar days of the year now.

 

Time and Date: 12/20/2018 5:38:03 PM

Solar Declination: 23.43269 S

Equation of Time: 2.15

Minutes for Solar Declination to change by .01: 2123.06

Minutes for Equation of Time to change by .01: 29.09

 

 

Was just looking at Mexico City sunrise and sunset times... they actual peak at a sun angle of 90 degrees on May 17th and then it declines a little in June... and then peaks at 90 degrees again on July 25th.

 

I assume that between May 17th - July 25th... the sun is technically in the northern sky in the middle of the day.  Although it probably appears straight overhead.

 

Keep going south... and Bogota Columbia has a peak sun angle of 90 degrees on April 1st and September 10th.   And reaches a low of 71.2 degrees on the summer solstice.   That would be so confusing!    



#2110
GHweatherChris

Posted 20 December 2018 - 06:49 PM

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Was just looking at Mexico City sunrise and sunset times... they actual peak at a sun angle of 90 degrees on May 17th and then it declines a little in June... and then peaks at 90 degrees again on July 25th.

I assume that between May 17th - July 25th... the sun is technically in the northern sky in the middle of the day. Although it probably appears straight overhead.

Keep going south... and Bogota Columbia has a peak sun angle of 90 degrees on April 1st and September 10th. And reaches a low of 71.2 degrees on the summer solstice. That would be so confusing!


Not if you live there 🙄

#2111
TT-SEA

Posted 20 December 2018 - 06:50 PM

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Not if you live there

 

True.   



#2112
Mr Marine Layer

Posted 20 December 2018 - 07:20 PM

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At the equator, the June Solstice and December Solstice both have the lowest sun angles of the year, but the hours of daylight stays constant at about 12 hours and 7 minutes the entire year. They still have an earliest sunrise/sunset around November 3 which is about 30 minutes earlier than the latest sunrise/sunset on February 11.

#2113
Thunder98

Posted 23 December 2018 - 10:26 AM

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Just had a very shallow 3.3 Earthquake at 10:04AM in Orcutt. It was a strong jolt for 15 seconds.



#2114
Mr Marine Layer

Posted 23 December 2018 - 10:50 AM

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June Gloom before Christmas? The storm should give us better air quality and more December-like weather.

#2115
Mr Marine Layer

Posted 23 December 2018 - 03:39 PM

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Lots of haze today with Santa Ana Mountains barely visible from Lake Forest and clearly in the haze at Rancho Santa Margarita Lake, but we can kiss the inversion goodbye for Christmas as the colder air aloft moves in with the weak storm.

#2116
Craig Matthews

Posted 23 December 2018 - 05:32 PM

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Hi. First time posting on the weather forums. My location is in Arizona- Flagstaff area (Kachina Village) but will be in Show Low as well. Temp spread in Kachina Village: Low 21. High 50.
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#2117
Eujunga

Posted 23 December 2018 - 07:17 PM

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Hi. First time posting on the weather forums. My location is in Arizona- Flagstaff area (Kachina Village) but will be in Show Low as well. Temp spread in Kachina Village: Low 21. High 50.

 

Welcome, Craig.  There's also a Mountain West forum that might be more appropriate geographically, but you're welcome to post here in the California sub-forum as well -- the more the merrier!

 

I've always had a thing for the Flagstaff area and I love the climate there.  Looks like a little snow is headed your way Christmas night, but it's been a while since you've had a significant event.  At least the monsoon has been very active the last few years.


Tujunga, CA (15 miles N of Downtown L.A.) - Elev. 1,860 ft.

 

Eugene, OR (5 miles SSW) - Elev. 850 ft.


#2118
Mr Marine Layer

Posted 24 December 2018 - 07:49 AM

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It's a foggy Christmas Eve. Rudolph will be needed.

#2119
Mr Marine Layer

Posted 24 December 2018 - 04:05 PM

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Still extremely hazy with the Santa Ana Mountains not even visible. However, the demolition of the marine layer inversion should be a good present.



#2120
Mr Marine Layer

Posted 24 December 2018 - 05:23 PM

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Looks like it won't quite be so foggy tonight for Santa as the marine layer rapidly deepens to 5000 feet.

#2121
Thunder98

Posted 24 December 2018 - 05:36 PM

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It's windy and drizzly right now with the strong push of the marine layer. Most of today was very clear



#2122
Mr Marine Layer

Posted 24 December 2018 - 09:55 PM

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Equation of Time will reach zero tonight, meaning solar noon will be 12:00 PM in Greenwich, England. In early November it was 11:43 AM. It has shifted from 11:34 AM to 11:50 AM in the same amount of time for Lake Forest, but it still too early (before 12 PM) due to Southern California being too far east for the Pacific Time Zone.

 

Marine layer has already deepened up to 3000, but it looks like the frontal passage will be needed to finally get rid of the haze, which has kept visibility between 3 to 4 miles today even after the fog burned off.



#2123
Mr Marine Layer

Posted 25 December 2018 - 09:35 AM

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Another downpour here with Lake Forest up to 0.21" so far for this storm.

#2124
Mr Marine Layer

Posted 25 December 2018 - 11:55 AM

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Julian webcam currently shows snow falling as it's much colder than the 64 F of yesterday and the inversion that brought the haze is gone.

#2125
Mr Marine Layer

Posted 25 December 2018 - 12:23 PM

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Downtown L.A. got a stunning total of nothing from this storm.

#2126
Thunder98

Posted 25 December 2018 - 06:24 PM

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Orcutt got 0.55 from this storm, way overperformed the forecast of 0.15".

#2127
Mr Marine Layer

Posted 25 December 2018 - 10:20 PM

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Got some good downpours last night and this morning, but even with the heavy rain at times, it did not amount to much. Looks like we will not see any measurable rain for the remainder of 2018.

Christmas has a sunset of 4:48 PM here, which is later than Thanksgiving when the sun set at 4:44 PM. This Friday will have a sunset of 4:50 PM, which will be the first time since November 11 that the sun goes down at 4:50 PM or later. Sunrise, of course, continues to get later and will not return to the Winter Solstice time until about January 25, but by then the evenings will be quite a bit lighter with sunset about 5:15 PM.

#2128
Mr Marine Layer

Posted 27 December 2018 - 12:08 PM

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Deep marine layer again today, but this should be the last time in 2018.

#2129
Mr Marine Layer

Posted 27 December 2018 - 10:18 PM

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Santa Ana Winds have started here, just a few hours after lots of cumulus clouds at sunset.

#2130
Mr Marine Layer

Posted 28 December 2018 - 09:40 AM

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Cold Santa Ana winds are a nuisance. No Red Flag Warning with these winds, but if we don't get any major rainfall soon, the fire danger could significantly increase by mid January.

#2131
Thunder98

Posted 28 December 2018 - 11:41 AM

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It's only 55F at it's almost noon. Tonight it's going to be in around 30F. Brrrr



#2132
Mr Marine Layer

Posted 30 December 2018 - 08:31 PM

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Low clouds are coming in as marine layer develops for its final time of 2018. Very strong Santa Ana Winds are then forecast for the Rose Parade.



#2133
Thunder98

Posted 31 December 2018 - 09:35 AM

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A forecast high of only 36F in St. George, Utah. Wow

 

Attached File  St George UT Weather Forecast.PNG   93.98KB   0 downloads



#2134
Eujunga

Posted 31 December 2018 - 10:19 AM

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A forecast high of only 36F in St. George, Utah. Wow

 

attachicon.gifSt George UT Weather Forecast.PNG

 

The whole Four Corners region will be in the deep freeze for the next few days, with a good bit of snow from central Arizona east.

 

My sister is in Santa Fe, which is kind of at the bullseye of the action.  Low of -7º a couple days ago.  She already has issues with frozen pipes, and they won't be thawing out anytime soon.


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Tujunga, CA (15 miles N of Downtown L.A.) - Elev. 1,860 ft.

 

Eugene, OR (5 miles SSW) - Elev. 850 ft.


#2135
Eujunga

Posted 31 December 2018 - 11:10 AM

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A forecast high of only 36F in St. George, Utah. Wow

 

attachicon.gifSt George UT Weather Forecast.PNG

 

Your mention of it being cold in St. George reminded me of the time I drove with my aunt and uncle to Colorado for Christmas in 1990, right at the peak of the huge arctic blast that year.  We stopped in St. George for dinner, and I remember thinking "Holy CRAP it's cold!"  Not what you'd expect for what's often the hottest place in Utah.  Check out these departures:

 

1990-12stgeorge.jpg


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Tujunga, CA (15 miles N of Downtown L.A.) - Elev. 1,860 ft.

 

Eugene, OR (5 miles SSW) - Elev. 850 ft.


#2136
Mr Marine Layer

Posted 31 December 2018 - 12:38 PM

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Marine layer has exploded well into Arizona this morning after breaking over the mountains earlier this morning. Should be interesting to see how developing Santa Ana Winds will push all of this stuff out.

 

Attached File  vis123118.jpg   59.1KB   0 downloads



#2137
Mr Marine Layer

Posted 31 December 2018 - 02:58 PM

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Santa Ana Winds are starting even with lots of clouds remaining, but the clouds are thinning out.



#2138
Mr Marine Layer

Posted 31 December 2018 - 03:08 PM

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Phoenix is currently 44 F with light rain. Not the sunny, warm weather place to escape today.