2017 California/Southwest Weather Thread

[Guest happ]

NWS_Sacramento

The only national location that averages no rain in July

 

[Guest happ]

The massive deepening of the marine layer did not happen. NWS Los Angeles was wrong and NWS San Diego was correct.

 

It took all morning for NSW_LA to realize

[Anti Marine Layer]

Much warmer today, but still relatively breezy for this time of year. It was a nice day.

[Guest happ]

Nice to have a few cooler than average days before another heat up resumes later in the week.

 

Sunday: 86/ 65

[Guest happ]

Yes!

 

[Anti Marine Layer]

Yes!

 

It would be fun to have some monsoon thunderstorms west of the mountains, but the still cool sea surface temperatures will make it difficult.

 

http://www.ospo.noaa.gov/data/sst/contour/californ.cf.gif

 

http://www.ospo.noaa.gov/data/sst/anomaly/2017/anomp.7.3.2017.gif

[Guest happ]

It would be fun to have some monsoon thunderstorms west of the mountains, but the still cool sea surface temperatures will make it difficult.

 

 

 

But aren't these readings close to normal?

 

 TANNER BANKS               60 63  320/  4/  4 1017.0F         5/180/14

S CLEMENTE BASIN              66  270/  6/  6 1016.8F         5/200/15

SAN NICOLAS IS.               62                N/A           3/160/14

SO. S. ROSA ISLA           59 63  270/  8/  8 1017.0F         5/160/15

W. S. BARBARA CH           60 61  260/  6/  8 1017.3F         5/170/15

M. S. BARBARA CH           64 64  250/  6/  8 1017.6F         3/270/ 9

S. MONICA BASIN            65 65  250/  4/  6 1016.5F         3/180/12

S PEDRO CHANNEL               68                N/A           3/160/14

CMP PENDLETON NS              68                N/A           3/210/15

OCEANSIDE OFFSHR              69                N/A           2/180/13

TORREY PINES OTR              69                N/A           2/200/15

SAN DIEGO BAY                 73              1016.3F

POINT LOMA SOUTH              69                N/A           3/180/13

 

[Guest happ]

Model guidance has been poor recently; every day is hotter than forecast. Hopefully this will actually be cooler than predicted.

 

NWS_LA Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Monica Mountains Recreational Area-Santa Clarita Valley-
Los Angeles County San Fernando Valley-
Los Angeles County San Gabriel Valley-
Including the cities of Santa Paula, Fillmore, Ojai, Piru,
Thousand Oaks, Simi Valley, Moorpark, Newbury Park,
Santa Clarita, Newhall, Valencia, Woodland Hills, Northridge,
Burbank, Universal City, Pasadena, San Gabriel, and Pomona
255 PM PDT Mon Jul 3 2017

...EXCESSIVE HEAT WATCH IN EFFECT FROM THURSDAY MORNING THROUGH
SATURDAY EVENING...

The National Weather Service in Los Angeles/Oxnard has issued an
Excessive Heat Watch, which is in effect from Thursday morning
through Saturday evening.

* TEMPERATURES...ranging from 100-107 degrees. Overnight low
  temperatures will remain in the 70s to lower 80s across warmest
  locations, especially in the foothills.

* IMPACTS...Very high temperatures may create a dangerous
  situation in which heat illnesses are possible. Temperatures
  inside vehicles, even if the windows are partially open, can
  quickly rise to life-threatening levels. The extended period
  of hot temperatures will bring elevated fire weather concerns.

 

[Anti Marine Layer]

But aren't these readings close to normal?

 

 TANNER BANKS               60 63  320/  4/  4 1017.0F         5/180/14

S CLEMENTE BASIN              66  270/  6/  6 1016.8F         5/200/15

SAN NICOLAS IS.               62                N/A           3/160/14

SO. S. ROSA ISLA           59 63  270/  8/  8 1017.0F         5/160/15

W. S. BARBARA CH           60 61  260/  6/  8 1017.3F         5/170/15

M. S. BARBARA CH           64 64  250/  6/  8 1017.6F         3/270/ 9

S. MONICA BASIN            65 65  250/  4/  6 1016.5F         3/180/12

S PEDRO CHANNEL               68                N/A           3/160/14

CMP PENDLETON NS              68                N/A           3/210/15

OCEANSIDE OFFSHR              69                N/A           2/180/13

TORREY PINES OTR              69                N/A           2/200/15

SAN DIEGO BAY                 73              1016.3F

POINT LOMA SOUTH              69                N/A           3/180/13

 

 

They look pretty close to normal. It actually shows much warmer water in the Southern California Bight than other places along the coast. It just seems mornings have been a bit chilly for early July, but that might be because the last couple of summers, sea surface temperatures were well above normal.

[Guest happ]

They look pretty close to normal. It actually shows much warmer water in the Southern California Bight than other places along the coast. It just seems mornings have been a bit chilly for early July, but that might be because the last couple of summers, sea surface temperatures were well above normal.

 

I was surprised by how cool it was this morning but afternoons are too warm for my tastes.

 

93/ 62

[Thunder98]

The Santa Maria Valley has a slight chance of T'storms on Tuesday night and Wednesday morning.

[Thunder98]

[Anti Marine Layer]

10 degree difference between Santa Monica Airport (75 F) and Santa Monica Pier (65 F) today. Even sunny afternoons are cool right next to the water. It was hotter than expected today.

[Dan the Weatherman]

I was surprised by how cool it was this morning but afternoons are too warm for my tastes.

 

93/ 62

 

It was quite cool here in Orange last night, but was warmer than forecast today. Only low 80's were forecast, but it reached closer to 90 this afternoon.

[Thunder98]

The morning low yesterday was 47F! The coldest July low since 2010!

 

[Guest happ]

 

The morning low yesterday was 47F! The coldest July low since 2010!

 

 

 

That must feel fantastic. Are the higher elevations surrounding Orcutt warmer at night?

[Thunder98]

That must feel fantastic. Are the higher elevations surrounding Orcutt warmer at night?

 

I don't know 

[Guest happ]

Visible satellite shows  a disturbance well off shore that could produce thundershowers north of Pt Conception tonight; hopefully more monsoonal chances during the rest of the week.

 

93/ 64

[Anti Marine Layer]

Dewpoints do not show it, but it definitely feels more humid tonight.

[Thunder98]

Scattered Monsoonal mid level clouds around the area.

 

 

 

 

[Guest happ]

Looking like rainfall [maybe virga] in Monterey county currently. 

[Anti Marine Layer]

Some marine layer clouds managed to make their way into Lake Forest this morning, but they were gone by 7:30 AM.

 

Most of the monsoonal clouds are to the Southeast this morning.

[Thunder98]

More pictures of Altocumulus clouds earlier today.

 

 

 

 

 

 

 

 

[Thunder98]

 

 

 

 

[Thunder98]

What is this phenomenon called?

[Guest happ]

IMPERIAL       LGT RAIN  98  65  33 SE9       29.85F HX 101     

SoCalWxwatcher      
 

[Anti Marine Layer]

Where did you get that satellite image from? Marine layer is quite extensive.

 

Mid to high clouds have decreased throughout the day. It is hazy again. I could see some towering cumulus clouds far away to the north.

[Anti Marine Layer]

What is this phenomenon called?

IMG_1259.PNG

 

It's virga. Rain evaporating before it can reach the ground.

[Guest happ]

Where did you get that satellite image from? Marine layer is quite extensive.

 

Mid to high clouds have decreased throughout the day. It is hazy again. I could see some towering cumulus clouds far away to the north.

     

Twitter: SoCalWxwatcher 

[Guest happ]

There was a cell above the San Gabriel mts that drifted north toward Palmdale; don't know if it produced anything. It has been in the low 90's for past 3 days; hopefully it won't get too much hotter but triple-digits are forecast for Pasadena by Friday.

 

90/ 67

[Anti Marine Layer]

South wind tonight would suggest that the coastal eddy may have returned, but it's a warm wind compared to last weekend.

[Anti Marine Layer]

Not much marine layer or monsoonal clouds this morning, so it's going to be a hot one, except at the beaches. Morro Bay had a high of 58 F yesterday, but the ocean is a lot colder up there.

[Anti Marine Layer]

7 years ago today it was very gloomy and rainy (not drizzly) with some areas getting over 0.10". The ground did not dry up until about noon. A very deep marine layer made it one of the coldest July days in history with Foothill Ranch only reaching 65 degrees. Lots of record low maximums were set for coastal areas that year.

 

Not the same today.

[Guest happ]

7 years ago today it was very gloomy and rainy (not drizzly) with some areas getting over 0.10". The ground did not dry up until about noon. A very deep marine layer made it one of the coldest July days in history with Foothill Ranch only reaching 65 degrees. Lots of record low maximums were set for coastal areas that year.

 

Not the same today.

 

Cool, literally

 

My records show 72/ 60 here w/ no rain. 2010 was the start of a wet period that peaked in 2011. La Ninas can be very good to California including cool summers. About 6 degrees below average, July 2010 was the coolest [mean: 72.3] at this location [23 yrs]. 

[Guest happ]

Not much marine layer or monsoonal clouds this morning, so it's going to be a hot one, except at the beaches. Morro Bay had a high of 58 F yesterday, but the ocean is a lot colder up there.

 

I looked up the readings for San Luis Obispo [12 miles inland]: 84° at university & airport. Amazing temp gradient.  

[Guest happ]

 NWS_SF

"Under this pattern expect Friday to be the hottest day of the 
  week. Mos data for Paso Robles, which often is a good proxy for 
  many of our interior valleys is up to 112 on the gfs mos for 
  Friday afternoon. With a shallow marine layer along the coast 
  under a strong ridge the beaches will likely remain cloudy/foggy 
  with highs in the upper 50s for places like Pt Reyes and Ocean 
  Beach. Thus during the peak heating of Friday afternoon we could 
  see nearly 50 to 55 degree temperature spreads across our cwa or 
  even within Monterey county."
 

[Thunder98]

There is a fire just east of me in the mountains.

 

[Guest happ]

Snow at 9000' - Tioga Pass/ Yosemite

 

Looks refreshing

 

Warm day in LA

94/ 66

 

 

[Thunder98]

It's going to be very warm today and Saturday. 

 

[Anti Marine Layer]

Palm Springs had a low of 90 F, and some places were worse than that. While there is some monsoonal moisture, the high is probably too strong for any thunderstorms.