2017 California/Southwest Weather Thread

[Anti Marine Layer]

Julian was only 54 F for the high today. Probably much of the day was foggy there.

[Thunder98]

Its 46F in Santa Maria! Cooler than forecasted! Fall is right on time!

 

http://i.imgur.com/J0qV7Gp.jpg

[Anti Marine Layer]

Inversion is weak to non-existent this morning. As a result the temperatures dropped into the 50s for the first time since last spring.

 

Today is the day the sun rises due east and sets due west.

[Guest happ]

Its 46F in Santa Maria! Cooler than forecasted! Fall is right on time!

 

http://i.imgur.com/J0qV7Gp.jpg

 

Its gratifying that MOS was accurate. Ventura/ Santa Barbara counties & Inland Empire recorded 40's:

NWS_LA

 ...Ventura County...

:

CMA  :     Camarillo             :     74 /  53 /  0.00

FILC1:     Fillmore              :     78 /  45 /  0.00

LOKC1:     Lockwood Vly Yard     :     63 /  28 /  0.00

OJAC1:     Ojai                  :     76 /  42 /  0.00

LOXC1:     Oxnard - NWS          :     72 /  52 /  0.00

SMVC1:     Simi Valley           :     73 /  51 /  0.00

VTUC1:     Ventura               :     69 /  54 /  0.00

WLVC1:     Westlake Village      :     73 /  46 /  0.00

:

:        ...Santa Barbara County...

:

CYMC1:     New Cuyama            :     69 /  41 /  0.00

LPC  :     Lompoc                :     69 /  42 /  0.00

SBA  :     SBA Arpt/Goleta       :     77 /  50 /  0.00

BFXC1:     SBA City FD           :     79 /  55 /  0.00

SMX  :     Santa Maria           :     69 /  45 /  0.00

IZA  :     Santa Ynez            :     72 /  43 /  0.00

 

 

 

[Guest happ]

NWS_SF

[Anti Marine Layer]

Fall Equinox arrived at 1:02 PM.

[Thunder98]

The Dew point went down to 39F around noon today before it went back up.

 

 

[Anti Marine Layer]

Sun has set for the first time here in fall, but it still set slightly north of west here tonight due to atmospheric refraction and the sun not being a point. Tomorrow it will rise slightly north of east and then it will rise south of east and set south of west until just before the spring equinox. I like to call this "cheat range". It's the reason the day is slightly longer than 12 hours at the equinox and the sun does not set at the north pole until a few days after the fall equinox.

 

Anyway the weather feels a lot like fall, and even though next week could be hot again, it should not be miserably humid.

[Guest happ]

Another clear/ cool morning

 

Friday: 75/ 57

[Anti Marine Layer]

It's another deep marine layer with basically no inversion, which means very random clouds, more prevalent during the day than the night. Tomorrow could be the first day since September 12 that we reach normal or above normal.

[Anti Marine Layer]

Offshore flow should begin the warmup tomorrow. Not much change in the deserts though, but Palm Springs could reach 100 late in the week.

 

Here are the last days at 100 or higher for Palm Springs the past 3 years

2014: 103 on 10/12

2015: 100 on 10/14

2016: 106 on 9/18

 

 

9/13 is last day to reach 100 in 2017. If it holds, it will be interesting after the hottest summer on record.

[Thunder98]

Another relatively chilly September morning in the Santa Maria Valley!

 

http://www.wrh.noaa.gov/mesowest/getobext.php?wfo=lox&sid=KSMX&num=72&raw=0

 

 

[Thunder98]

Very dry air in Arizona today. Monsoon Season is definitely over now.

 

 

 

[Anti Marine Layer]

Very boring visible satellite image this morning, and they used to have better ones that were faster to update before they changed the satellite technology last year. However, looked like a very small remnant of marine layer was near the San Diego County coastal slopes. That should be gone soon.

[Guest happ]

Very dry air in Arizona today. Monsoon Season is definitely over now.

 

Yumaazwx6.PNG

 

Phoenixwx.PNG

 

Tucsonwx.PNG

 

Monsoon probably over, as you write but now we can look forward to North Pacific storms. La Nina can translate into frequent rainy periods or be a complete bust

[Thunder98]

Monsoon probably over, as you write but now we can look forward to North Pacific storms. La Nina can translate into frequent rainy periods or be a complete bust

 

I think this Fall and Winter we could see a hybrid of 2007-2008, 2010-2011 and 2016-2017 patterns.

[Guest happ]

I think this Fall and Winter we could see a hybrid of 2007-2008, 2010-2011 and 2016-2017 patterns.

 

Those are good analogues of recent rain years especially 2011.

 

Sunday: 86/ 59

[Anti Marine Layer]

There is a fire in the foothills near the toll road exit toward Corona.

[Anti Marine Layer]

Dewpoint is 28 F in Fullerton. Have not seen that for quite a while. Wind shift seems to have changed the direction the smoke is blowing now.

[Guest happ]

There is a fire in the foothills near the toll road exit toward Corona.

 

I could see the smoke from Santa Ana mt fire due to excellent visibility. Winds are fairly light and temps are reasonable considering the time of the year.

 

88/ 66

[Anti Marine Layer]

Very dead day today for this thread. Lots of smoke this morning, but could not see anything by the afternoon. Dewpoints are back in the low 60s. Today felt hotter than yesterday even though KFUL was cooler.

[Guest happ]

Fairly typical late summer weather

 

Tuesday: 88/ 66

[Anti Marine Layer]

Fairly typical late summer weather

 

Tuesday: 88/ 66

Late summer or early fall?

[Thunder98]

Expected to cool off in the coming days.

 

http://forecast.weather.gov/MapClick.php?lon=-120.42926568721555&lat=34.885594578725815#.WcxVr2hSyUk

[Guest happ]

It hasn't been particularly warm this week but cooling sounds nice nonetheless.

 

90/ 63

[Anti Marine Layer]

Looks like another hot, but not extremely hot day today before a cool down begins this weekend. This is the time of year when we can get our most extreme heat events with Santa Ana Winds.

 

No fog this morning in Irvine.

[Guest happ]

Late summer or early fall?

 

The astronomical calendar is actually a better fit with the seasons, particularly summer, in my opinion. From July 1 to September 30 there is only a 2 degree difference for average monthly maximums [87°- 89°] and one degree spread for minimums [65°- 66°]. For my location, June and October both average in low 80's/ low 60's [max/ min]. Summer conditions make it a long season at our latitude.

[Anti Marine Layer]

Palm Springs falls one degree short of 100 F today while we have a very warm late September evening here.

 

Sunset is getting quite early now. We are losing about twice as much daylight in the evening than we do in the morning.

[Guest happ]

Little toasty today but nothing too extreme.

 

94/ 65

[Anti Marine Layer]

No 100 F yet for Palm Springs, but it could have happened between one of the hourly reporting times.

 

Fog did not advance far inland at all this morning.

[Anti Marine Layer]

Palm Springs had a high of 102 F, for their first high 100 F or greater since September 13. September 13 will not be their last day of 2017 to be 100 F or higher.

[Guest happ]

Ridging is weakening for cooling temps. No rain in sight which is no surprise this time of the year. 

 

Friday: 92/ 63

[Anti Marine Layer]

Marine layer clouds started the day for the first time in a week here. Otherwise, not much going on here as late May through early June and most of October have the most boring weather of the year here.

[Guest happ]

September 2017

 

Max: 85.8/ Norm: 87

Min: 66.3/ Norm: 65

Mean: 76.0

 

MaxHi/Lo: 104/ 73

MinHi/Lo: 81/ 57

 

Cooling Degree Days: 337 

 

Rain: 012

Total [jul-jun]: 0.12

Days: 1

[Anti Marine Layer]

Cooler day today with a deeper marine layer tonight. There were a few interesting high clouds today.

[Anti Marine Layer]

Marine layer has deepened quite a bit to start October, but the inversion seems to be quite weak as it is burning off fast.

 

It is likely we will get our first Pacific storm of the 2017-18 season this month. Until then it looks like we will have periods of cool and hot weather.

[Guest happ]

Marine layer has deepened quite a bit to start October, but the inversion seems to be quite weak as it is burning off fast.

 

It is likely we will get our first Pacific storm of the 2017-18 season this month. Until then it looks like we will have periods of cool and hot weather.

 

One could argue that frontal precipitation occurred 10 days ago. Otherwise the sad reality is that the last storm [the kind you are referring to] was in mid-Feb. Recorded 2.21 on 2/17. It just stopped raining in SoCal afterwards w/ less than an inch for the rest of the rain season. NorCal stayed wet, however w/ record snowpack

 

[richard mann]

(.. cross-reference.)
 
http://theweatherforums.com/index.php/topic/1648-fall-2017-colder-air-mass-movement-and-distribution-projections/?p=259268

[Anti Marine Layer]

Almost no clouds this morning, despite the deep marine layer, but we could get some stratocumulus clouds with the sun's heating. This trough does not look to be as cold as the one we had around Fall Equinox.

[Guest happ]

Cool mostly clear morning w/ some clouds forming. 

 

Sunday: 80/ 63