2019 California and Southwest Weather Discussion Thread

[Thunder98]

Went down to 39F this morning, It has been a long time since it went below 40F in October.

[Anti Marine Layer]

Onshore flow has really picked up here.

[Reg]

Cooling down very quickly this evening. Had to change to much warmer clothes in the last hour.

[Anti Marine Layer]

Marine layer already deep enough for reverse clearing as most clouds are over the Santa Ana mountains.

[Anti Marine Layer]

It clouded up quickly after sunset. No 52 degree lows tonight with the cloud blanket.

[Reg]

Marine layer is completely covering my area now.

[Anti Marine Layer]

The low cloud deck is rather thin with lots of holes overnight allowing the moon to shine.

[Anti Marine Layer]

Offshore flow to develop the next 2 days, but no Red Flag Warning so far, which is a good thing.

 

We are having an Indian Summer after a very cool spring, but that is not very unusual here.

[Anti Marine Layer]

Clear morning with fog sitting a few miles off the coast.

[Anti Marine Layer]

More of the same old same old boring but beautiful weather here.

[Reg]

I'll actually be gone for a while starting on the 21st, and I won't be back until around sometime in December. Too bad we couldn't get any interesting weather this month before my departure.

[Anti Marine Layer]

I'll actually be gone for a while starting on the 21st, and I won't be back until around sometime in December. Too bad we couldn't get any interesting weather this month before my departure.

That's a long time to be away. Where are you going?

[Reg]

That's a long time to be away. Where are you going?

 

Army basic training. I've been told I get a two-week leave mid-way through it (around Christmas) but then I fly back out east to finish my training through roughly March. No internet access during most of that time so unfortunately I'll miss a lot of this winter here (and much of the next four years). Once I arrive at my unit in Spring 2020 and get situated, I will check back on here frequently but won't have obs or data of my own to show for quite a while. Ultimately I will come back however, eventually.

 

Much warmer here this evening, 13 degrees warmer than it was at this time yesterday (78F now versus 65F yesterday).

[Anti Marine Layer]

I guess no more Temecula weather pages.

[Reg]

I guess no more Temecula weather pages.

The site is actually not run by me - I only contributed by writing stories on a somewhat regular basis. I have already made arrangements with the owner, the site will continue but my contributions will stop for a while. I'm not leaving completely, however.

 

Also looks like ENSO-neutral conditions will be present for the winter. I've already seen local newscasters predict below-average rainfall this season, but ENSO-neutral years are always a gamble.

[Reg]

Halfway through the month and I have seen almost no clouds here at all since the 1st. Every day this month so far has been either completely Sunny or Mostly Sunny, as I keep track of on my wall calendar. The quiet summer continues into a quiet autumn. All we have had this month is some occasional offshore flow, and slightly warmer than average days (but normal night temps).

 

Octobers of 2001, 2014 and 2017 were also very dry and inactive like this (although the latter two were much, much warmer).

[Anti Marine Layer]

Should be another warm one today with the sunrise now later than the latest standard time sunrise.

[Anti Marine Layer]

Hot today even with some high clouds moving in.

[Anti Marine Layer]

High clouds have thickened up quite a bit now.

[Anti Marine Layer]

Temperatures are dropping quickly with the thick high clouds and increasing onshore flow.

[Anti Marine Layer]

Low clouds are back this morning but do not look to last long. Also there's some higher clouds above the low clouds.

[Anti Marine Layer]

Higher clouds disappeared with the low clouds.

[Anti Marine Layer]

Marine layer clouds returning as the depth seems to be skyrocketing.

[Reg]

10-15 degrees cooler today.

[Reg]

66F at 6 PM today, compared to 79F at 6 PM yesterday and 83 F at 6 PM on Tuesday. Already seeing what looks like pieces of marine layer to the west.

[Anti Marine Layer]

Big onshore push tonight. Low clouds should reach the coastal slopes again.

[Anti Marine Layer]

The onshore flow/offshore flow pendulum is swinging back and forth.

[Reg]

Two days of onshore flow followed by three days of offshore flow, rinse & repeat and you have the entire month of October 2019 so far.

[Anti Marine Layer]

Once again low clouds made an early intrusion last evening and have mostly disappeared by the morning.

[Thunder98]

This weather sucks, It needs to rain soon, because it's so boring.

[Anti Marine Layer]

It eventually should rain sometimes, but first come the power outages and fires.

[Reg]

Still breezy but slightly warmer this evening. 

[Anti Marine Layer]

The sun is almost 10.00 degrees south of the equator, which it will be by tomorrow morning. This morning sunrise was about 48 seconds later than yesterday while this evening sunset was about 72 seconds earlier. That amounts to about a 120 second loss of daylight.

 

Around the Fall Equinox the sunrises were about 41 seconds later each day while the sunsets were about 83 seconds earlier, which resulted in 124 seconds being lost each day.

 

So why is sunrise getting later faster now than at the equinox? It's because solar noon is approaching its earliest time of the year, which happens around November 3, and it's happening at a slower and slower rate every day. It's getting about 12 seconds earlier each day now vs. 21 seconds earlier each day at the equinox.

 

Meanwhile, weather continues to be boring.

[Anti Marine Layer]

So far Downtown LA is averaging 12.39 degrees more for the high temperature in October (82.29) than May (69.90).

[Anti Marine Layer]

Could get pretty hot early next week.

[Reg]

So far Downtown LA is averaging 12.39 degrees more for the high temperature in October (82.29) than May (69.90).

 

It's not unusual for average highs in October to be that warm in Downtown L.A., but also remember that May was exceptionally cool this year due to that persistent trough pattern at the time.

 

In Temecula, this month's average high is a bit above average, but the average low is actually three degrees below average. Weirdly enough, that happened in October 1999 as well - extremely warm days, but surprisingly cool nights that were apparently not affected by the daytime heat.

[Anti Marine Layer]

Another chilly morning before we have another warm afternoon. No marine layer clouds.

[Anti Marine Layer]

There's some fast moving clouds on the satellite loop.

 

[Anti Marine Layer]

73 in the house this morning. To me it's a bit cool, but some (most?) people would set their AC lower than that.

[Anti Marine Layer]

Gimme a B. Gimme an O. Gimme a R. Gimme an I. Gimme an N. Gimme a G.

 

Hey, but at least it's a beautiful day.