From the “weather is not climate department”, while the east gets a heat wave, southern California sets chilly records in July over several days. Both Los Angeles and San Diego NWS offices made a number of record event reports, which I’ve compiled below along with an LA Times story. Much of the Southwest was cooler as seen in the map below:
Of particular note from San Diego:
[THURSDAY JULY 8th] RECORD OF 64 DEGREES IN SAN DIEGO TIED THE LOWEST MAX TEMPERATURE EVER RECORDED IN THE MONTH OF JULY WHICH LAST OCCURRED IN 1912.
LA Times: What summer? Record cold at LAX as July gloom continues
July 10, 2010
Unusually cold temperatures in Southern California continued, with Los Angeles International Airport setting a record low on Friday.
LAX got to only 67 degrees, breaking a record set in 1926, according to the National Weather Service.
Temperatures are expected to stay fairly cool Saturday, with highs around 70 on the coast and in the 80s inland. Conditions will be a bit warmer on Sunday, according to the weather service.
July has turned out to be cooler than normal.
Instead of daytime highs approaching the mid-80s, downtown L.A. has experienced temperatures in the mid- to high 70s. From June 1 to July 5, daytime and nighttime temperatures have averaged a relatively cool 69.8 degrees.
That makes that stretch one of the cooler ones for that time of the year in the last 10 years, just slightly warmer than the same period in 2004 (69.4 degrees) and 2002 (68.9 degrees). The cooler ocean air early in the day has a moderating effect on daily temperature conditions. And low-lying clouds have been tempering the sun’s heat.
— Shelby Grad
===================
Here’s today’s report from San Diego:
RECORD EVENT REPORT NATIONAL WEATHER SERVICE SAN DIEGO CA 640 PM PDT SUN JUL 11 2010 ...LOWEST MAXIMUM TEMPERATURE RECORDS BROKEN OR TIED ON JULY 11... LOCATION NEW RECORD OLD RECORD PERIOD OF RECORD ALPINE 77 79 IN 1987 SINCE 1952 LAGUNA BEACH 68 TIED 68 IN 1965 SINCE 1928 NEWPORT BEACH 66 TIED 66 IN 2000 SINCE 1934 OCEANSIDE HARBOR 64 66 IN 2005 SINCE 1953 VISTA 72 73 IN 1965 SINCE 1957
RECORD EVENT REPORT NATIONAL WEATHER SERVICE SAN DIEGO CA 535 PM PDT SAT JUL 10 2010 ...LOWEST MAXIMUM TEMPERATURE RECORDS BROKEN OR TIED ON JULY 10... LOCATION NEW RECORD OLD RECORD PERIOD OF RECORD CHULA VISTA 67 TIED 67 IN 1963 SINCE 1948 LAGUNA BEACH 65 67 IN 1965 SINCE 1928 LA MESA 72 TIED 72 IN 1955 SINCE 1948 NEWPORT BEACH 65 67 IN 2001 SINCE 1934 OCEANSIDE HARBOR 64 66 IN 2000 SINCE 1953 SAN DIEGO 67 TIED 67 IN 1916 SINCE 1875 THIS IS THE SIXTH STRAIGHT DAY SAN DIEGO HAS BROKEN OR TIED THE LOWEST MAX RECORDS.
RECORD EVENT REPORT NATIONAL WEATHER SERVICE SAN DIEGO CA 540 PM PDT FRI JUL 9 2010 ...LOWEST MAXIMUM TEMPERATURE RECORDS BROKEN OR TIED ON JULY 9... LOCATION NEW RECORD OLD RECORD PERIOD OF RECORD LAGUNA BEACH 66 68 IN 1965 SINCE 1928 LA MESA 71 73 IN 1965 SINCE 1948 NEWPORT BEACH 65 TIED 65 IN 1996 SINCE 1934 OCEANSIDE HARBOR 63 65 IN 2004 SINCE 1953 SAN DIEGO 65 66 IN 1909 SINCE 1875 RECORD EVENT REPORT NATIONAL WEATHER SERVICE SAN DIEGO CA 530 PM PDT THU JUL 8 2010 ...LOWEST MAXIMUM TEMPERATURE RECORDS BROKEN OR TIED ON JULY 8... LOCATION NEW RECORD OLD RECORD PERIOD OF RECORD ALPINE 67 78 IN 1987 SINCE 1952 CHULA VISTA 64 66 IN 1964 SINCE 1948 EL CAJON 72 73 IN 1987 SINCE 1979 LAGUNA BEACH 66 70 IN 1987 SINCE 1928 LA MESA 65 74 IN 1987 SINCE 1948 OCEANSIDE HARBOR 63 64 IN 2002 SINCE 1953 RIVERSIDE MARCH 81 TIED 81 IN 1944 SINCE 1927 SAN DIEGO 64 65 IN 1902 SINCE 1875 VISTA 66 72 IN 1987 SINCE 1957 TODAY`S RECORD OF 64 DEGREES IN SAN DIEGO TIED THE LOWEST MAX TEMPERATURE EVER RECORED IN THE MONTH OF JULY WHICH LAST OCCURRED IN 1912.
======================================
Here’s the official NWS record report from LAX:
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
430 AM PDT FRI JUL 10 2010
...ONE RECORD LOW MAXIMUM TEMPERATURE SET AGAIN YESTERDAY...
YESTERDAY WAS ANOTHER IN A STRING OF VERY COOL EARLY JULY DAYS
IN SOUTHWESTERN CALIFORNIA...ESPECIALLY AT THE IMMEDIATE COAST
OF LOS ANGELES WHERE A NEW DAILY RECORD LOW MAXIMUM TEMPERATURE
WAS RECORDED YESTERDAY.
A RECORD LOW MAXIMUM TEMPERATURE IS SET WHEN THE HIGHEST
TEMPERATURE ON A CERTAIN DATE IS COOLER THAN ON THAT DATE
IN ANY PREVIOUS YEAR.
THE FOLLOWING IS A RECORD SET OR TIED FOR JULY 9TH...ALONG
WITH THE OLD RECORD AND THE YEAR IN WHICH IT OCCURRED.
STATION NEW OLD
RECORD (2010) RECORD YEAR
LOS ANGELES AIRPORT 67 68 1926
===================================
Here is the record events from Friday July 9th:
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
330 AM PDT FRI JUL 9 2010
...MANY RECORD LOW MAXIMUM TEMPERATURES SET AGAIN YESTERDAY...
...THREE DAILY PRECIPITATION RECORDS WERE SET...
YESTERDAY WAS ANOTHER IN A STRING OF VERY COOL EARLY JULY DAYS
IN SOUTHWESTERN CALIFORNIA. MANY NEW DAILY RECORD LOW MAXIMUM
TEMPERATURE RECORDS WERE SET OR TIED YESTERDAY.
A RECORD LOW MAXIMUM TEMPERATURE IS SET WHEN THE HIGHEST
TEMPERATURE ON A CERTAIN DATE IS COOLER THAN ON THAT DATE
IN ANY PREVIOUS YEAR.
THE FOLLOWING IS A LIST OF THE RECORDS SET OR TIED FOR
JULY 7TH...ALONG WITH THE OLD RECORD AND THE YEAR IN
WHICH IT OCCURRED.
STATION NEW OLD
RECORD (2010) RECORD YEAR
LOS ANGELES DOWNTOWN/USC 70 71 1916
LOS ANGELES AIRPORT 65 67 1987
BURBANK AIRPORT 72 76 1944
SAN GABRIEL 72 80 1944
UCLA 66 69 1960
SANTA MONICA PIER 63 (TIED) 63 1965
SANTA MARIA 66 (TIED) 66 1956
SAN LUIS OBISPO CAL POLY 67 69 1974
=======================================
And from Thursday July 8th:
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
555 AM PDT THU JUL 8 2010
...MANY RECORD LOW MAXIMUM TEMPERATURES SET AGAIN YESTERDAY...
...THREE DAILY PRECIPITATION RECORDS WERE SET...
YESTERDAY WAS ANOTHER IN A STRING OF VERY COOL EARLY JULY DAYS
IN SOUTHWESTERN CALIFORNIA. MANY NEW DAILY RECORD LOW MAXIMUM
TEMPERATURE RECORDS WERE SET OR TIED YESTERDAY.
A RECORD LOW MAXIMUM TEMPERATURE IS SET WHEN THE HIGHEST
TEMPERATURE ON A CERTAIN DATE IS COOLER THAN ON THAT DATE
IN ANY PREVIOUS YEAR.
THE FOLLOWING IS A LIST OF THE RECORDS SET OR TIED FOR
JULY 7TH...ALONG WITH THE OLD RECORD AND THE YEAR IN
WHICH IT OCCURRED.
STATION NEW OLD
RECORD (2010) RECORD YEAR
LOS ANGELES DOWNTOWN/USC 71 72 1923
LOS ANGELES AIRPORT 67 (TIED) 67 1952
LONG BEACH AIRPORT 73 (TIED) 73 2009
BURBANK AIRPORT 74 78 1969
SAN GABRIEL 72 78 1945
SANTA BARBARA AIRPORT 66 (TIED) 66 1952
UCLA 67 69 1963
PASO ROBLES AIRPORT 75 (TIED) 75 1969
DAILY RAINFALL RECORDS WERE ALSO SET YESTERDAY.
RAINFALL OF 0.02 INCHES AT UCLA SET A RECORD FOR THE DATE.
THE PREVIOUS RECORD WAS A TRACE...SET IN 1950 AND AGAIN IN 1968.
RAINFALL OF 0.01 INCHES AT OXNARD NWS SET A NEW RECORD FOR THE
DATE. THE PREVIOUS RECORD WAS A TRACE...SET IN 2004.
RAINFALL OF 0.01 INCHES AT CAMARILLO AIRPORT SET A NEW RECORD
FOR THE DATE. MEASURABLE RAIN HAD PREVIOUSLY NEVER BEEN RECORDED
THERE ON JULY 7TH.
=======================================
Wednesday July 7th
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
615 AM PDT WED JUL 7 2010
...MANY RECORD LOW MAXIMUM TEMPERATURES SET YESTERDAY...
...THREE DAILY PRECIPITATION RECORDS WERE SET...
YESTERDAY WAS A VERY COOL EARLY JULY DAY IN SOUTHWESTERN CALIFORNIA.
MANY NEW DAILY RECORD LOW MAXIMUM TEMPERATURE RECORDS WERE
ESTABLISHED.
THE FOLLOWING IS A LIST OF THE RECORDS SET FOR JULY 6TH...ALONG WITH
THE OLD RECORD AND THE YEAR IN WHICH IT OCCURRED.
STATION NEW OLD
RECORD (2010) RECORD YEAR
LOS ANGELES AIRPORT 66* 68 1968
BURBANK AIRPORT 73 76 1963
WOODLAND HILLS 79 82 1969
SAN GABRIEL 74 77 1969
SANTA BARBARA 67 (TIED) 67 1971
SAN LUIS OBISPO/CAL POLY 67 (TIED) 67 1955
*THE HIGH TEMPERATURE OF 66 DEGREES AT LOS ANGELES AIRPORT TIED A
RECORD LOW MAXIMUM TEMPERATURE FOR ANY DAY DURING THE MONTH OF
JULY...MATCHING THE 66 DEGREE HIGH SET MOST RECENTLY ON JULY 25TH
1965.
DAILY RAINFALL RECORDS WERE ALSO SET OR TIED YESTERDAY.
RAINFALL OF 0.02 INCHES AT SANTA MONICA PIER SET A RECORD FOR THE
DATE. MEASURABLE RAIN HAS NEVER BEEN RECORDED THERE ON JULY 6TH.
RAINFALL OF 0.02 INCHES AT OXNARD NWS AND 0.01 INCHES AT UCLA TIED
RECORDS FOR THE DATE SET IN 2001.
ALTHOUGH NOT NECESSARILY RECORD BREAKING...IT HAS BEEN A VERY CHILLY
START TO THE MONTH OF JULY IN SOUTHWESTERN CALIFORNIA...PARTICULARLY
ON THE COASTAL PLAIN. IN FACT...AT DOWNTOWN LOS ANGELES...LOS
ANGELES AIRPORT...LONG BEACH AIRPORT...SANTA BARBARA AIRPORT...AND
HERE AT THE OXNARD NWS...AVERAGE HIGH TEMPERATURES FOR THE FIRST 6
DAYS IN JULY WERE COOLER THAN THE FIRST 6 DAYS THIS PAST JANUARY.
HERE ARE THE COMPARISONS.
STATION AVG HIGH AVG HIGH NORM AVG
JAN 1-6 2010 JUL 1-6 2010 JUL 1-6
DOWNTOWN LOS ANGELES 76.3 75.8 82.5
LOS ANGELES AIRPORT 74.8 69.2 74.3
LONG BEACH AIRPORT 74.8 73.3 81.3
SANTA BARBARA AIRPORT 69.7 68.5 76.0
OXNARD (NWS) 74.8 69.8 72.0
========================================
And Tuesday July 6th
RECORD EVENT REPORT
NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA
455 AM PDT TUE JUL 6 2010
...RECORD LOW MAXIMUM TEMPERATURES OVER THE PAST FEW DAYS...
IF THE DAYS HAVE SEEMED RATHER CHILLY FOR JULY LATELY...IT IS WITH
GOOD REASON. RECORD LOW MAXIMUM TEMPERATURES HAVE BEEN SET OR TIED
IN SOME LOCATIONS ON EACH OF THE PAST THREE DAYS.
ON JULY 3RD...THE HIGH TEMPERATURE OF 69 DEGREES AT LONG BEACH
AIRPORT BROKE THE OLD RECORD OF 72 DEGREES SET IN 1999.
ON JULY 4TH...THE HIGH TEMPERATURE OF 70 DEGREES AT LONG BEACH
AIRPORT TIED THE RECORD FOR THE DATE...SET IN 2002.
YESTERDAY...NEW RECORDS WERE SET AT BOTH LOS ANGELES AIRPORT AND
LONG BEACH AIRPORT FOR JULY 5TH. THE HIGH TEMPERATURE OF 67 DEGREES
AT LOS ANGELES AIRPORT WAS 1 DEGREE LOWER THAN THE PREVIOUS RECORD
OF 68 DEGREES SET IN 1968. THE HIGH OF 71 DEGREES AT LONG BEACH
AIRPORT WAS ALSO 1 DEGREE LOWER THAN THE PREVIOUS RECORD OF 72
DEGREES SET IN 2002.
OFFICIAL RECORDS HAVE BEEN KEPT AT LOS ANGELES AIRPORT SINCE 1944
AND AT LONG BEACH AIRPORT SINCE 1958.
ADDITIONAL RECORD LOW MAXIMUM TEMPERATURES ARE POSSIBLE ACROSS
SOUTHWESTERN CALIFORNIA TODAY AND WEDNESDAY.
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You missed the record lows in the Pacific Northwest a couple of weeks ago. Burr! Then it was a heat wave. Now it’s going to be chilly again. 60s tomorrow.
How is this possible? I thought airports were heat islands.
REPLY: Yes. when you have solar radiation coming in heating up the vast tarmac. SoCal has been socked in with clouds. But notice the red dot in AZ? Wait till you see my next post! -Anthony
Given UHI these records are possibly even more impressive.
I’ve lived here off and on for 50 years. I live in SoCal near the coast. This is the coldest summer I’ve ever experienced here. Everyone I run into agrees. It’s flat bizarre. It’s only like spring weather now. Prior to this it was like winter. I still turn on the heater at night. It’s July.
Someone from work went to Catalina last weekend. It rained the whole time and they caught a cold. They hadn’t packed winter gear.
Chicago area has been very mild for this time of year….I think the “heat wave” has moved on, so where are the warmists lately? They come in waves, just like Minnesota gnats!
68F in Chicago right now, perfect sleeping weather…
Got to agree with Frank – the PNWet has been miserable this year. First BBQ happened between drizzles on June 30 Brrrrr!
The good news is we have lots of mosquitos. [/snarq]
Summer, which began on Tuesday this past week, has ended, and tomorrow will be 65º. Again.
here in sydney we had a mild summer but I think the coldest June since 1949.
SOS here in AZ. Hoping for some T-storms soon.
Another good example of the wide variety of weather, and another example of why the climate meme of global long-term average weather, either historic or future, is useless. We can never experience climate, only the weather at our current location in the moment of time we call now.
A more meaningful and useful concept is that of weather regime, which is what is happening in your local area currently and what is likely to be going to happen there for the next few years. Good knowledge of this would allow for efficient farm production, through correct crop selection, and minimise the impact of future extreme weather events.
It would be far better if science focused the vast amounts of money currently spent on climate research into finding ways for predicting future local weather regimes, thus improving short/medium term planning.
You know Anthony, this is what happened in OH last year. We were very unsummer-like in the summer weather department. Second coldest July on record, I do believe. It is strange none of the people I spoke to last year are as hysterical as they are this year about global warming. We even had a day in June where the high was in the 50s or 60s. It was a record low high for the date, part of a very abnormal summer. This year is much hotter, and also quiet in the tornado department. I may be speaking too soon, hopefully not, but it seems the weather has been very tame this year, comparatively. We have had a few miserable days, but I think people are just complaining because last year’s summer was so mild. Bracket that mild summer in cold winters, and you have my theory as to why global warming is again a danger in OH.
They got all sissy-skinned to hot weather. 😉
Don’t know what they are complaining about. I have no air-conditioner. Those are bad for the environment…
I work as a meteorologist in SoCal, and let me tell you…if you compare any parameter (marine layer depth, 850 mb temp, 500 mb height) to high temperatures…there isn’t even one that comes close in the last 10-15 years in July. Almost all of the first seven days have been not only outliers, but extreme outliers with respect to any atmospheric parameter you look at. It doesn’t help that water temperatures are running 6 or so degrees below normal. Even with this upcoming heat spell we’re likely to get out west later this week, coastal locations probably won’t get out of the low 70s. Just an incredibly “cold” period for midsummer. The fact that San Diego tied an all-time July record low that’s 98 years old is astounding. The GW proponents will argue this is consistent with AGW theory, as the impact on deserts will naturally increase onshore flow and deepen the marine layer. However, with the deserts generally running at or below normal too (with the exception of the High Mojave in California), this doesn’t add up. It’s just a freak short-term wx fluctuation that is pretty remarkable…and re-emphasizes that, yes, we can still break cold records, even in the urban wasteland of Southern California.
HR says:
July 11, 2010 at 10:06 pm
How is this possible? I thought airports were heat islands.
REPLY: Yes. when you have solar radiation coming in heating up the vast tarmac. SoCal has been socked in with clouds. But notice the red dot in AZ? Wait till you see my next post! -Anthony
One of the things I like about this blog is exemplified here. Anthony could have been demeaning and belittling about the reply, but instead avoided the snark that we all, even myself sometimes, draw out of our holsters. Kudos for that, because when I first read the comment, I had teed up a snarky reply in the noggin.
Jan Pompe
July 11, 2010 at 10:38 pm
Hi Jan,
It’s rare to see you here. I’m glad to see your name!! 🙂
Gene
‘….But notice the red dot in AZ? Wait till you see my next post! -Anthony’
And what is the other red dot?
A measle?
Looking at the Pacific SSTs, one might expect more records to fall in the future. http://weather.unisys.com/surface/sst_anom.html
CRS, Dr.P.H. says:
July 11, 2010 at 10:14 pm
Chicago area has been very mild for this time of year….I think the “heat wave” has moved on, so where are the warmists lately?
**********************************
VILLABOLO:
Right here CRS. Where are you as far as the ENTIRE WORLD is concerned?
What I’d like to do is inform you that record hot temperatures have outnumbered record lows. Have you taken the trouble to ascertain how much of the Earth is hotter than average compared to colder than average? Or is this a faith based assumption?
villabolo says:
July 11, 2010 at 11:47 pm
“[…]What I’d like to do is inform you that record hot temperatures have outnumbered record lows. […]”
Yawn. Here we go again. Any data to back that up?
@villabolox says: July 11, 2010 at 11:47 pm
“Have you taken the trouble to ascertain how much of the Earth is hotter than average compared to colder than average? Or is this a faith based assumption?”
Whilst ever the “temperature records” are largely in the hands of the “true believers” who have cherry picked, adjusted and homogenised them to death; any assessment of what is “average”, “colder than average” or indeed “hotter than average” is largely “a faith based assumption”.
With some of the annual, monthly, weekly and daily temperature swings we have seen (both recently and going all the way back to the oldest “unadjusted” records) any shifts of a few tenths of a degree over a Century looks about as exciting as sea level rise of a few inches over a similar period.
You still haven’t explained to us why it is all our fault because of the CO2 we emit, rather than because of the number of Big Macs we eat or the cost of posting a letter or any one of hundreds of things that have been increasing. We get your general message that it has to be our fault, one way or another.
Meanwhile, the climate, oblivious to all the best theories, just keeps on doin’ whatta climate’s gotta do.
You should get out more.
Looking at the Pacific SSTs, one might expect more records to fall in the future.
There’s been a spate of record lows in NZ over the last few days, especially at the bottom of the south island.
http://www.odt.co.nz/news/dunedin/114294/dunedin-dry-and-sunny-june
It will be very hard to push this as “teh hottest yeah EVAH” given the lack-luster year so far down here. But no doubt NIWA will give it a shot.
Another post to allow americans to ass a comment about the weather in their area….
West coast SST looks cool.
http://weather.unisys.com/surface/sst_anom.html
Although there are some days when I forget to check the weather forecast, I haven’t noticed any 40C (104F) highs here in Sacramento County–so far. And that’s unusual. Knock on wood!
Cold sea-water in Vancouver (BC) area keeping things tolerably cool this year. Laughable news reports of a “heat wave” — everything is relative in the minds of those who forget other years – or maybe folks just have no clue about geography and pay too much attention to eastern media? or perhaps climate religion? My measure: wore the wetsuit sea-kayaking later this year than I can ever recall. A month of solid cloud & rain followed by a few days of sunshine = media “heat wave”. In a summer when the North Pacific High sets in deep (and hot unbearable sun dominates for weeks to months at a time) people just call that pattern “normal”. Short memories.
WashPost: [snip]
[reply] take it to tips and notes please. RT-mod
The ocean temps have been in free fall recently, the last of the heat from the suns recent decades of frantic behavior. Slumbering as it is now, some-what short of watts/sq metre , the coming decade or three may be a tad cool.