Monday, April 20, 2009

PM Update: Record California Heat, April 20

Image (click to enlarge): Surface temperature at 3 pm PDT, from Unisys

Update 9:30 pm PDT: Oregon and northern California records:
STATION                  PREVIOUS        NEW        RECORDS
RECORD/YEAR RECORD BEGAN

REDMOND, OR 83 / 1986 83 (TIED) 1949
THE DALLES, OR 86 / 1986 87 1948

LOCATION MONDAY`S HIGH PREVIOUS RECORD

OREGON...

MEDFORD 90 86 IN 1986
KLAMATH FALLS 81 78 IN 1986

CALIFORNIA...

MONTAGUE 87 82 IN 1956
MOUNT SHASTA 84 83 IN 1986
April monthly records:
AT SAN DIEGO LINDBERGH FIELD THE RECORD BROKEN WAS HELD FOR A
REMARKABLE 110 YEARS. THE TEMPERATURE OF 98 ALSO TIES THE HIGHEST
TEMPERATURE ON RECORD FOR THE ENTIRE MONTH OF APRIL...WHICH ALSO
OCCURRED ON APRIL 6 1989.

AT LAGUNA BEACH THE HIGH TEMPERATURE OF 97 DEGREES TIES THE HIGHEST
TEMPERATURE ON RECORD FOR APRIL AS WELL...WHICH ALSO OCCURRED ON
APRIL 7 1989.

Update 6 pm PDT: More reports:
 A RECORD HIGH TEMPERATURE OF 100 DEGREES WAS SET AT DOWNTOWN LOS
ANGELES (USC) CA TODAY. THIS BREAKS THE OLD RECORD OF 96 SET IN 1958.

A RECORD HIGH TEMPERATURE OF 95 DEGREES WAS SET AT LOS ANGELES
AIRPORT TODAY. THIS BREAKS THE OLD RECORD OF 86 SET IN 1986.

A RECORD HIGH TEMPERATURE OF 100 DEGREES WAS SET AT LONG BEACH
AIRPORT CA TODAY. THIS BREAKS THE OLD RECORD OF 93 SET IN 1986.

A RECORD HIGH TEMPERATURE OF 99 DEGREES WAS SET AT SAN GABRIEL CA
TODAY. THIS BREAKS THE OLD RECORD OF 98 SET IN 1958.

A RECORD HIGH TEMPERATURE OF 86 DEGREES WAS SET AT SANTA MONICA
PIER CA TODAY. THIS BREAKS THE OLD RECORD OF 79 SET IN 1958.

A RECORD HIGH TEMPERATURE OF 99 DEGREES WAS SET AT UCLA CA TODAY.
THIS BREAKS THE OLD RECORD OF 94 SET IN 1958.

A RECORD HIGH TEMPERATURE OF 94 DEGREES WAS SET AT PALMDALE AIRPORT
CA TODAY. THIS TIES THE OLD RECORD OF 94 SET IN 1950.

A RECORD HIGH TEMPERATURE OF 96 DEGREES WAS SET AT CAMARILLO TODAY.
THIS BREAKS THE OLD RECORD OF 90 SET IN 1958.

A RECORD HIGH TEMPERATURE OF 97 DEGREES WAS SET AT WFO-OXNARD
TODAY. THIS BREAKS THE OLD RECORD OF 90 SET IN 1958.

A RECORD HIGH TEMPERATURE OF 98 DEGREES WAS SET AT PASO ROBLES
AIRPORT CA TODAY. THIS BREAKS THE OLD RECORD OF 95 SET IN 1950.

A RECORD HIGH TEMPERATURE OF 98 DEGREES WAS SET AT SANTA MARIA
AIRPORT CA TODAY. THIS BREAKS THE OLD RECORD OF 91 SET IN 1986.

LOCATION NEW RECORD OLD RECORD PERIOD OF RECORD

ALPINE 99 95 IN 1958 SINCE 1951
BEAUMONT 93 92 IN 1958 SINCE 1948
BIG BEAR LAKE 75 73 IN 1994 SINCE 1960
CAMPO 90 88 IN 1997 SINCE 1948
CHULA VISTA 97 89 IN 1986 SINCE 1948
EL CAJON 101 90 IN 1986 SINCE 1979
LAGUNA BEACH 97 85 IN 1987 SINCE 1928
OCEANSIDE HARBOR 84 76 IN 1999 SINCE 1953
SANTA ANA 103 91 IN 1986 SINCE 1916
RIVERSIDE UCR 103 99 IN 1958 SINCE 1948
WILD ANIMAL PARK 100 91 IN 1986 SINCE 1979
SAN DIEGO LINDBERGH 98 93 IN 1899 SINCE 1875
FULLERTON APT ASOS 100 96 IN 1958 SINCE 1948
ONTARIO APT ASOS 100 91 IN 1958 SINCE 1951
RAMONA APT ASOS 96 88 IN 1986 SINCE 1974
RIVERSIDE APT ASOS 101 97 IN 1958 SINCE 1927

...HIGHEST MINIMUM TEMPERATURE RECORDS BROKEN OR TIED ON APRIL 20...

SAN DIEGO LINDBERGH 63 TIED 63 IN 1980 SINCE 1875
RIVERSIDE UCR 59 58 IN 1958 SINCE 1948
BEAUMONT 59 55 IN 1987 SINCE 1948
ALPINE 59 58 IN 1999 SINCE 1951

TODAYS HIGH OF 96 AT REDDING RECORD BROKE THE RECORD AT BOTH THE
AIRPORT AND AT THE OLD REDDING CITY LOCATION. THE OLD CITY RECORD
WAS 93...SET IN 1931.

THE HIGH AT RED BLUFF AIRPORT REACHED 95...WHICH ECLIPSED THE OLD
RECORD HIGH OF 91 SET IN 1950.

THE HIGH AT THE SACRAMENTO CITY STATION REACHED 94 DEGREES...
BREAKING THE OLD RECORD OF 92 SET IN 1931. THE RECORD AT SACRAMENTO
EXECUTIVE AIRPORT REACHED 93...THE OLD RECORD WAS 90 SET IN 1950.

A RECORD HIGH TEMPERATURE OF 96 DEGREES WAS SET AT STOCKTON CA
SUNDAY. THIS BREAKS THE OLD RECORD OF 90 SET IN 1950.

A RECORD HIGH TEMPERATURE OF 97 DEGREES WAS SET AT MODESTO CA
SUNDAY. THIS BREAKS THE OLD RECORD OF 92 SET IN 1986.

THE HIGH TEMPERATURE AT FRESNO/YOSEMITE INTERNATIONAL AIRPORT THIS
AFTERNOON WAS 96 DEGREES. THIS BROKE THE RECORD FOR THE DATE OF 94
DEGREES SET IN 1950 AND 1931.

OTHER RECORDS ESTABLISHED TODAY INCLUDE MERCED AIRPORT WITH 94
DEGREES...MADERA AIRPORT AT 96 DEGREES...AND HANFORD AIRPORT 97.
THESE ALL BROKE RECORDS THAT WERE SET IN 2006...HOWEVER THESE ARE
RELATIVELY NEW CLIMATE STATIONS WITH ONLY 11 YEARS OF RECORDS.

BAKERSFIELD...MEADOWS FIELD...HAD A HIGH TODAY OF 97. THIS IS ONE
DEGREE SHY OF THE RECORD OF 98 SET IN 1906.

Update 5:30 pm PDT: The record reports have started coming in from the National Weather Service:
SITE           TODAY`S HIGH     PREVIOUS HIGH / YEAR

GILROY 99 86 / 1992
KENTFIELD 90 87 / 1950
KING CITY 100(TIED) 100 / 1931
MOFFETT FIELD 93 84 / 1986
MONTEREY* 93 85 / 1986
NAPA 94(TIED) 94 / 1931
OAKLAND MUSEUM 93 84 / 1986
OAKLAND AIRPORT 91 79 / 1986
RICHMOND 88 83 / 1986
SALINAS 99 88 / 1986
SANTA CRUZ 96 88 / 1899
SAN FRANCISCO 93 84 / 1986
SFO INTERNATIONAL 91 81 / 1986
SAN RAFAEL 90 88 / 1950
SAN JOSE 95 94 / 1906

Update 3 pm PDT: Temperatures have continued to climb, with several 90°+ readings in the Bay Area:
CITY           SKY/WX    TMP DP  RH WIND       PRES   REMARKS
SANTA ROSA MOSUNNY 91 46 21 S7 29.99F
SAN RAFAEL N/A 86 MM MM MISG
NAPA SUNNY 88 59 37 SW6 30.00F
CONCORD SUNNY 91 50 24 N5 30.00F
OAKLAND CITY N/A 89 MM MM MISG
OAKLAND MOSUNNY 87 55 33 W9 30.01F
SAN FRAN CITY N/A 91 MM MM MISG
SAN FRAN ARPT MOSUNNY 80 60 50 N6 30.01F
LIVERMORE MOSUNNY 91 46 21 E7 30.00F
HAYWARD SUNNY 90 55 30 W8 29.99F
REDWOOD CITY N/A 89 MM MM MISG
MOFFETT ARPT SUNNY 90 52 27 N8 30.00F
SAN JOSE ARPT MOSUNNY 94 47 20 NW9 29.99F HX 90
In the interior of Los Angeles County, Altadena, Ontario, and Riverside have all hit 100°.

Original post:
At 1 pm local time, the downtown Los Angeles temperature of 99° has already exceeded by 3° the previous record for this date set in 1958. The 90° reading at the airport is 4° above the old record. Long Beach, at 98°, is 5° above the 1986 record. UCLA (95°) is 1° above the 1958 record. The 96° at Santa Maria is 5° above the 1986 record.

Potentially record heat extends northward to the Bay Area, where many readings are already in the upper 80s.

Observations from around the state of California at 2 pm PDT are available here.

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