2017 California/Southwest Weather Thread

[Guest happ]

There's discussion of an atmospheric river type set-up in 2 weeks. Who knows and what a welcome late season delight for NorCal if it happens.  

 

74/ 57

[Anti Marine Layer]

Great day for walking with pleasant temperatures and deep blue skies once the marine layer burned off, but even with the sunshine it would have been a bit chilly for the beach.

 

I remember some completely gray Memorial Day weekends and others that were hot. One of the hot ones my friend from Chapman University graduated and the ceremony was outside at about 11am and it was upper 80s or low 90s. The next year for my graduation they moved it to the evening and that was a cold May Gray day with drizzle or light rain during the ceremony.

[richard mann]

(.. cross-reference.)
 
http://theweatherforums.com/index.php/topic/1546-spring-2017-colder-air-mass-movement-and-distribution-projections/?p=241027

[Anti Marine Layer]

Uh oh! Richard has longitudinally made his way into this post again but I predict his colder body mass will move latitudinally out for a few weeks before his next system comes through.

[Guest happ]

Warmer today but more troughiness this week should strengthen marine layer again.

 

81/ 56

[Guest happ]

Stratus has cleared w/ scattered cirrus overhead thanks to the weak low to the southwest. This type of set-up is ideal during summer esp when strong high pressure sets up over the West Coast. During an otherwise relatively hot/ humid summer, July 2015 is a good example of a sustained pattern of southwest troughs under-cutting the western ridge [similar to current conditions in PacificNW]. The heat is worse in Seattle than LA. There have been a few fires [Mandeville canyon] but dew points in the upper 50's help. 

 

Photo taken around sunrise [courtesy of Rick Dickert/ Channel 11]

 

[Anti Marine Layer]

Burnoff is slow this morning, but looks like sun should come out within half an hour except for the beaches, which will likely stay cloudy all day.

[Anti Marine Layer]

Stratus has cleared w/ scattered cirrus overhead thanks to the weak low to the southwest. This type of set-up is ideal during summer esp when strong high pressure sets up over the West Coast. During an otherwise relatively hot/ humid summer, July 2015 is a good example of a sustained pattern of southwest troughs under-cutting the western ridge [similar to current conditions in PacificNW]. The heat is worse in Seattle than LA. There have been a few fires [Mandeville canyon] but dew points in the upper 50's help. 

 

Photo taken around sunrise [courtesy of Rick Dickert/ Channel 11]

Seattle was 82 yesterday, which is warm, but I would not consider that heat. What would be your ideal high temperature for a summer day?

[Guest happ]

Seattle was 82 yesterday, which is warm, but I would not consider that heat. What would be your ideal high temperature for a summer day?

 

Ideally 75 to 80°

[Guest happ]

Fairly normal Memorial Day conditions

 

77/ 57

[Anti Marine Layer]

Marine layer was slow to burn off, but it was a nice day once it did, and I know lots of people enjoyed the overcast morning. May Gray will transition into June Gloom this week.

[Anti Marine Layer]

Looks like low clouds are burning off here in Irvine, despite the fact that they covered the almost the whole Inland Empire this morning. Gloom lovers can spend a day at the beach, but be careful you don't get a sunburn through the overcast.

 

Otherwise a few more weeks of boring late spring/early summer pre-monsoon weather.

[Jesse]

Looks like low clouds are burning off here in Irvine, despite the fact that they covered the almost the whole Inland Empire this morning. Gloom lovers can spend a day at the beach, but be careful you don't get a sunburn through the overcast.

 

Otherwise a few more weeks of boring late spring/early summer pre-monsoon weather.

We should make all the gloom lovers wear some sort of patch on their clothing, or maybe a tattoo/brand. That way we can keep track of them, discerning "gloomers" from the superior race of sun children, and it will be easier to round them all up for the re-education camps when the time is right.

[Guest happ]

Looks like low clouds are burning off here in Irvine, despite the fact that they covered the almost the whole Inland Empire this morning. Gloom lovers can spend a day at the beach, but be careful you don't get a sunburn through the overcast.

 

Otherwise a few more weeks of boring late spring/early summer pre-monsoon weather.

 

The other perspective welcomes the gloom. It elevates minimums/ lowers maximums. Windows open all the time w/ ceiling fans when necessary. I hated having to use A/C earlier this month. Walking/ exercising under morning overcast is refreshing 

[Guest happ]

Surprised by the heat in the high desert under lower atmospheric pressure.

 

1200

CAZ028-029-059-060-099-302000-
ANTELOPE VALLEY AND SURROUNDING AREAS

  
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
LANCASTER      SUNNY     90  39  16 SE6       29.90S                 
PALMDALE       SUNNY     88  39  17 CALM      29.91F                 
*POPPY PARK      N/A     92  38  14 SW9         N/A                  

CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
29 PALMS       CLOUDY    93  27   9 SE9       29.95S                 
BARSTOW/DAGGET CLOUDY    89  44  20 VRB5      29.87F                 
BISHOP         MOSUNNY  N/A N/A N/A MISG      29.94F                 
CHINA LAKE     PTSUNNY   92  38  15 SE10      29.88S                 
EDWARDS AFB    PTSUNNY   87  45  23 N5        29.88S                 
MOJAVE         SUNNY     86  45  23 CALM      29.92F                 
NEEDLES        SUNNY    103  23   6 S9        29.81F HX  95          
VICTORVILLE    MOSUNNY   88  30  12 CALM      29.93F                 
 

[Anti Marine Layer]

The other perspective welcomes the gloom. It elevates minimums/ lowers maximums. Windows open all the time w/ ceiling fans when necessary. I hated having to use A/C earlier this month. Walking/ exercising under morning overcast is refreshing 

 

It can be nice when it burns off by mid morning, like about 10:30 am, as it holds off the afternoon heat. Also you are further inland than I am, so your area is hotter than mine. During the mid summer the mornings can still be overcast and cool, but not as chilly as May and June. I don't like when it lasts all day long even inland and keeps temperatures in mid 60s. That is lower than the average January high and it feels colder since winter days are usually sunny when they're in the 60s. 

 

Still I have to be thankful we are not like San Francisco which is cold all summer or in some place where tornadoes can wipe out an entire town.

[Guest happ]

Coastal clouds moved inland even before sunset

 

76/ 60

[Anti Marine Layer]

Low clouds never cleared out 100% today, but we did get a decent amount of sunshine.

 

Tomorrow is the last day of May before June Gloom begins. June 2003 remains the gloomiest of Junes I can ever remember. 8 days of 60s for KFUL.

 

http://www.wrh.noaa.gov/sgx/obs/rtp/rtp_FUL_03

 

06/01/03  FUL  :      FULLERTON AIRPORT   96 :   77 /  62 /  0.00 /06/02/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  62 /  0.00 /06/03/03  FUL  :      FULLERTON AIRPORT   96 :   69 /  61 /     T /06/04/03  FUL  :      FULLERTON AIRPORT   96 :   75 /  61 /  0.00 /06/05/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  62 /     T /06/06/03  FUL  :      FULLERTON AIRPORT   96 :   70 /  61 /  0.01 /06/07/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  63 /  0.00 /06/08/03  FUL  :      FULLERTON AIRPORT   96 :   69 /  63 /  0.00 /06/09/03  FUL  :      FULLERTON AIRPORT   96 :   67 /  61 /     T /06/10/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  59 /     T /06/11/03  FUL  :      FULLERTON AIRPORT   96 :   74 /  63 /  0.00 /06/12/03  FUL  :      FULLERTON AIRPORT   96 :   73 /  59 /  0.00 /06/13/03  FUL  :      FULLERTON AIRPORT   96 :   77 /  61 /  0.00 /06/14/03  FUL  :      FULLERTON AIRPORT   96 :   80 /  58 /  0.00 /06/15/03  FUL  :      FULLERTON AIRPORT   96 :   78 /  62 /  0.00 /06/16/03  FUL  :      FULLERTON AIRPORT   96 :   75 /  63 /  0.00 /06/17/03  FUL  :      FULLERTON AIRPORT   96 :   76 /  63 /  0.00 /06/18/03  FUL  :      FULLERTON AIRPORT   96 :   73 /  63 /  0.00 /06/19/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  62 /  0.00 /06/20/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  60 /  0.00 /06/21/03  FUL  :      FULLERTON AIRPORT   96 :   68 /  61 /     T /06/22/03  FUL  :      FULLERTON AIRPORT   96 :   67 /  62 /     T /06/23/03  FUL  :      FULLERTON AIRPORT   96 :   72 /  62 /  0.00 /06/24/03  FUL  :      FULLERTON AIRPORT   96 :   75 /  62 /  0.00 /06/25/03  FUL  :      FULLERTON AIRPORT   96 :   84 /  58 /  0.00 /06/26/03  FUL  :      FULLERTON AIRPORT   96 :   88 /  61 /  0.00 /06/27/03  FUL  :      FULLERTON AIRPORT   96 :   82 /  63 /  0.00 /06/28/03  FUL  :      FULLERTON AIRPORT   96 :   77 /  63 /  0.00 /06/29/03  FUL  :      FULLERTON AIRPORT   96 :   84 /  62 /  0.00 /06/30/03  FUL  :      FULLERTON AIRPORT   96 :   84 /  62 /  0.00 /

 

June 2009 was also quite gloomy, but not quite as cold.

 

http://www.wrh.noaa.gov/sgx/obs/rtp/rtp_FUL_09

 

06/01/09  FUL  :      FULLERTON AIRPORT   96 :   73 /  61 /    T  /06/02/09  FUL  :      FULLERTON AIRPORT   96 :   78 /  58 /  0.00 /06/03/09  FUL  :      FULLERTON AIRPORT   96 :   70 /  61 /  0.00 /06/04/09  FUL  :      FULLERTON AIRPORT   96 :   74 /  56 /    T  /06/05/09  FUL  :      FULLERTON AIRPORT   96 :   74 /  59 /    T  /06/06/09  FUL  :      FULLERTON AIRPORT   96 :   73 /  57 /  0.00 /06/07/09  FUL  :      FULLERTON AIRPORT   96 :   74 /  59 /  0.00 /06/08/09  FUL  :      FULLERTON AIRPORT   96 :   74 /  59 /  0.00 /06/09/09  FUL  :      FULLERTON AIRPORT   96 :   73 /  61 /  0.00 /06/10/09  FUL  :      FULLERTON AIRPORT   96 :   70 /  60 /  0.00 /06/11/09  FUL  :      FULLERTON AIRPORT   96 :   73 /  62 /  0.00 /06/12/09  FUL  :      FULLERTON AIRPORT   96 :   71 /  62 /  0.00 /06/13/09  FUL  :      FULLERTON AIRPORT   96 :   73 /  63 /  0.00 /06/14/09  FUL  :      FULLERTON AIRPORT   96 :   75 /  59 /  0.00 /06/15/09  FUL  :      FULLERTON AIRPORT   96 :   76 /  61 /  0.00 /06/16/09  FUL  :      FULLERTON AIRPORT   96 :   78 /  62 /  0.00 /06/17/09  FUL  :      FULLERTON AIRPORT   96 :   77 /  62 /  0.00 /06/18/09  FUL  :      FULLERTON AIRPORT   96 :   79 /  63 /  0.00 /06/19/09  FUL  :      FULLERTON AIRPORT   96 :   78 /  63 /  0.00 /06/20/09  FUL  :      FULLERTON AIRPORT   96 :   73 /  64 /    T  /06/21/09  FUL  :      FULLERTON AIRPORT   96 :   77 /  65 /  0.00 /06/22/09  FUL  :      FULLERTON AIRPORT   96 :   77 /  57 /  0.00 /06/23/09  FUL  :      FULLERTON AIRPORT   96 :   78 /  62 /  0.00 /06/24/09  FUL  :      FULLERTON AIRPORT   96 :   77 /  62 /  0.00 /06/25/09  FUL  :      FULLERTON AIRPORT   96 :   80 /  61 /  0.00 /06/26/09  FUL  :      FULLERTON AIRPORT   96 :   80 /  59 /  0.00 /06/27/09  FUL  :      FULLERTON AIRPORT   96 :   84 /  61 /  0.00 /06/28/09  FUL  :      FULLERTON AIRPORT   96 :   94 /  62 /  0.00 /06/29/09  FUL  :      FULLERTON AIRPORT   96 :   80 /  61 /  0.00 /06/30/09  FUL  :      FULLERTON AIRPORT   96 :   85 /  60 /  0.00 /

 

A very persistent deep trough for much of June 2009 led to much deeper marine layers (5000 ft. plus) and weaker inversions than 2003, which allowed plenty of reverse clearing. Even Palm Springs was affected. 15 straight days below 100 and 9 straight days below 90. One of the coolest Junes on record for them.

 

http://www.wrh.noaa.gov/sgx/obs/rtp/rtp_PSP_09

 

06/01/09  PSP  :      PALM SPRINGS       425 :   99 /  68 /  0.00 / 06/02/09  PSP  :      PALM SPRINGS       425 :  100 /  69 /  0.00 / 06/03/09  PSP  :      PALM SPRINGS       425 :   96 /  74 /  0.00 / 06/04/09  PSP  :      PALM SPRINGS       425 :   91 /  72 /  0.00 / 06/05/09  PSP  :      PALM SPRINGS       425 :   85 /  64 /  0.00 / 06/06/09  PSP  :      PALM SPRINGS       425 :   86 /  60 /  0.00 / 06/07/09  PSP  :      PALM SPRINGS       425 :   88 /  62 /  0.00 / 06/08/09  PSP  :      PALM SPRINGS       425 :   89 /  67 /  0.00 / 06/09/09  PSP  :      PALM SPRINGS       425 :   86 /  65 /  0.00 / 06/10/09  PSP  :      PALM SPRINGS       425 :   84 /  63 /  0.00 / 06/11/09  PSP  :      PALM SPRINGS       425 :   85 /  63 /  0.00 / 06/12/09  PSP  :      PALM SPRINGS       425 :   87 /  67 /  0.00 / 06/13/09  PSP  :      PALM SPRINGS       425 :   87 /  65 /  0.00 / 06/14/09  PSP  :      PALM SPRINGS       425 :   90 /  65 /  0.00 / 06/15/09  PSP  :      PALM SPRINGS       425 :   90 /  64 /  0.00 / 06/16/09  PSP  :      PALM SPRINGS       425 :   94 /  69 /  0.00 / 06/17/09  PSP  :      PALM SPRINGS       425 :   97 /  71 /  0.00 / 06/18/09  PSP  :      PALM SPRINGS       425 :  104 /  71 /  0.00 / 06/19/09  PSP  :      PALM SPRINGS       425 :  100 /  74 /  0.00 / 06/20/09  PSP  :      PALM SPRINGS       425 :   96 /  71 /  0.00 / 06/21/09  PSP  :      PALM SPRINGS       425 :   95 /  64 /  0.00 / 06/22/09  PSP  :      PALM SPRINGS       425 :  100 /  67 /  0.00 / 06/23/09  PSP  :      PALM SPRINGS       425 :  103 /  69 /  0.00 / 06/24/09  PSP  :      PALM SPRINGS       425 :  105 /  71 /  0.00 / 06/25/09  PSP  :      PALM SPRINGS       425 :  103 /  72 /  0.00 / 06/26/09  PSP  :      PALM SPRINGS       425 :  107 /  72 /  0.00 / 06/27/09  PSP  :      PALM SPRINGS       425 :  110 /  73 /  0.00 / 06/28/09  PSP  :      PALM SPRINGS       425 :  113 /  80 /  0.00 / 06/29/09  PSP  :      PALM SPRINGS       425 :  110 /  82 /  0.00 / 06/30/09  PSP  :      PALM SPRINGS       425 :  111 /  80 /  0.00 / 

[Guest happ]

It can be nice when it burns off by mid morning, like about 10:30 am, as it holds off the afternoon heat. Also you are further inland than I am, so your area is hotter than mine. During the mid summer the mornings can still be overcast and cool, but not as chilly as May and June. I don't like when it lasts all day long even inland and keeps temperatures in mid 60s. That is lower than the average January high and it feels colder since winter days are usually sunny when they're in the 60s. 

 

Still I have to be thankful we are not like San Francisco which is cold all summer or in some place where tornadoes can wipe out an entire town.

 

Speaking of San Francisco: "Seattle Versus San Francisco Weather: Our Summers Are Better" per Cliff Mass http://cliffmass.blogspot.com/2017/05/seattle-versus-san-francisco-weather.html

[Anti Marine Layer]

Cloudy even in the desert this morning with the thick high clouds and a frontal system moving through the state, bringing some light showers to the Central Valley.

[Guest happ]

Low clouds never cleared out 100% today, but we did get a decent amount of sunshine.

 

Tomorrow is the last day of May before June Gloom begins. June 2003 remains the gloomiest of Junes I can ever remember. 8 days of 60s for KFUL.

 

http://www.wrh.noaa.gov/sgx/obs/rtp/rtp_FUL_03

 

 

June 2009 was also quite gloomy, but not quite as cold.

 

http://www.wrh.noaa.gov/sgx/obs/rtp/rtp_FUL_09

 

 

A very persistent deep trough for much of June 2009 led to much deeper marine layers (5000 ft. plus) and weaker inversions than 2003, which allowed plenty of reverse clearing. Even Palm Springs was affected. 15 straight days below 100 and 9 straight days below 90. One of the coolest Junes on record for them.

 

http://www.wrh.noaa.gov/sgx/obs/rtp/rtp_PSP_09

 

Those years produced cool Junes. In 2003 June maximum [77.4°] was cooler than May but the mean was warmer followed by a hot July & August averaging in the low 90's. A series of below normal early summers between 2009 to 2011 produced the coolest June in decades in 2009 [76.3°]. Average monthly max is 81.9F here. Last summer June averaged 85.4. I would like a cool summer like 2010.

 

BTW, looking at the data you provided for Fullerton, notice that all days in the 60's stayed in the 60's at night. June Gloom is like a blanket of coolness.  

[Guest happ]

Nice way to start summer unless you live in NorCal

 

[Anti Marine Layer]

Days like today always feel more like 55 when it is actually 65, compared to a 65 degree morning in July, which feels comfortable in shorts and t-shirt.

 

Does lower atmospheric pressure make it feel colder than the actual temperature?

[Guest happ]

May 2017 Data

 

Average Max: 76.9/ Norm: 77° 

Average Min: 57.7/ Norm: 58°

Mean: 67.3

 

Hi/Lo Max: 94/ 63

Hi/Lo Min: 65/ 49

 

Cooling Degree Days: 105

Heating Degree Days: 39

 

Rain: 0.26

Year [jul-jun]: 20.36

Days: 1

[Anti Marine Layer]

Cold winter-like day today. Always a sign of summer being a few weeks away.

[Anti Marine Layer]

One guy in that San Francisco vs. Seattle post comments that more than 65 is too hot on a cloudy day and more than 60 is too hot on a sunny day. Something must be wrong with my body to think 65 feels cold.

[Anti Marine Layer]

It's official. The May Gray has become June Gloom. Summer heat a few weeks away, unless it's another year like 2010.

[Anti Marine Layer]

Temperatures in Foothill Ranch are racing upwards as the marine layer burn off took the temperature from 60 F around noon to about 73 F now. The June Gloom has the biggest temperature effect on high elevation inland areas.

[Guest happ]

Pleasant day/ mild temps

 

76/ 61

[Anti Marine Layer]

Quite surprisingly San Diego Airport topped the 70 F mark today. Some Junes it can take quite a few days into the month before that happens.

Extremely thick marine layer clouds around noon that brought us rain this morning suprisingly cleared out late this afternoon in a reverse clearing pattern.

[Guest happ]

Quite surprisingly San Diego Airport topped the 70 F mark today. Some Junes it can take quite a few days into the month before that happens.

 

Extremely thick marine layer clouds around noon that brought us rain this morning suprisingly cleared out late this afternoon in a reverse clearing pattern.

 

SST

 SAN DIEGO BAY                 68              1012.2R

 

If you like 60's day/ night/ surf than SoCal is the place to be but relatives who live in Tierrasanta & Rancho Penasquitos [both in San Diego city limits]  are 10-20 degrees warmer per distant from the ocean. Micro-climates are a realistic option. Consider that higher elevations in Lake Forest are 10° warmer; it could just be a matter of a few miles away.

[Anti Marine Layer]

June is the month that has the biggest warm up in average high temperature for Orange County and other areas near the coast. May stays pretty much level between 75 F and 76 F, while by the end of June the average high is around 81 F.

 

However, actual climate data rarely agrees with averages. May was quite a bit of a roller coaster month with warm spells and cool spells. Hope to see things level off soon.

[Guest happ]

Per Weather Channel; June Gloom in California

 

[Anti Marine Layer]

Per Weather Channel; June Gloom in California

 

That's a very shallow marine layer there. Once the ocean warms up, summer marine layers are not as cold.

 

Here's an animation from yesterday.

 

[Jesse]

Per Weather Channel; June Gloom in California

Beautiful.

[Guest happ]

That's a very shallow marine layer there. Once the ocean warms up, summer marine layers are not as cold.

 

Here's an animation from yesterday.

 

Mljune1.gif

 

Notice no one is swimming in the photo. Outside the bay, SST are low/ mid 60's; that is chilly on a cloudy day

[Anti Marine Layer]

Notice no one is swimming in the photo. Outside the bay, SST are low/ mid 60's; that is chilly on a cloudy day

Once again it all depends on your temperature perception. Some people have a sweatshirt in 65 degrees and others have shorts, T-shirt, and flip-flops in 45 degrees.

 

I have been to the beach in mid summer with overcast skies, but usually the clouds are thin enough to let some warmth through, unlike the 4000 ft thick clouds we get in deep marine layers where it feels like mid Winter. Actually a very thin marine layer can make the ocean feel warmer.

[Anti Marine Layer]

NH1 First Alert Weather: 'June gloom' in the forecast

http://www.nh1.com/news/nh1-first-alert-weather-june-gloom-in-the-forecast/

(Not California)

[Guest happ]

June is the month that has the biggest warm up in average high temperature for Orange County and other areas near the coast. May stays pretty much level between 75 F and 76 F, while by the end of June the average high is around 81 F.

 

However, actual climate data rarely agrees with averages. May was quite a bit of a roller coaster month with warm spells and cool spells. Hope to see things level off soon.

There are 2 jumps in maximum temps during the warm season here. From 77° in May to 82 [81.9] in June and another 5-6° in July. The hottest month is August near 90F & 80's in Sept/ October. Summer starts off coolish but lasts 5 months and, as you know, many people are very irritable until the last heat wave occurs [often in early November when the rain season begins]. Summers are bone-dry until/ unless we luck out on monsoonal thunderstorms/ tropical storms like 2015.

 

85/ 60

[Anti Marine Layer]

Another microclimate day today with marine layer cloud deck clearly visible from UCI, where it was mostly sunny and low 70s. Lake Forest is about 10 degrees warmer. Suprisingly Fullerton Airport is showing only 75 F.