Tuesday, July 28, 2009

Record Heat Continues Building in Northwest, Southwest U.S.
Western Canada Also Affected



Image (click to enlarge): Surface temperature at 1 pm PDT, July 28, from Unisys

5 PM PDT Update: Washington/Oregon high temperatures, as of 5 pm PDT:
SEATAC AIRPORT 97 (ties daily record)
MCCHORD AFB 98
PUYALLUP 99
FORT LEWIS 99
SHELTON 103
OLYMPIA 101
KELSO 106
VANCOUVER 106
PORTLAND 106 (1° short of all-time July high)
THE DALLES 108

3 PM PDT Update: Latest temperatures:
Portland 102° (new daily record, unofficial)
Seattle 95°
Olympia 98°

2 PM PDT Update: The 2 pm temperature of 100° at Portland is only 1° short of the record for July 28 set in 1998. The all-time July high temperature record in Portland is 107° at the airport in 1965 and downtown in 1942.

Original post:
The record heat continues to build this afternoon in the West, especially the Pacific Northwest. It's not official until midnight, but a record high minimum temperature was set this morning in Phoenix:
...RECORD HIGH MINIMUM SET AT PHOENIX AZ TODAY...

THE LOW TEMPERATURE OF 92 DEGREES TODAY...28 JULY 2009...SET THE
RECORD HIGH LOW FOR THE DATE. THE PREVIOUS MARK WAS 91 SET IN 1998.
Environment Canada issued a Special Weather Statement this morning including the following (temperatures in Celsius; for the metrically-challenged, 35°C is equivalent to 95°F):
An unusually long heat-wave across the south coast of British
Columbia has begun. Temperatures will climb into the mid-to upper 30S
by Wednesday and computer models suggest the heat-wave may last 5 to
6 days. Many daily temperature records such as hottest July xx on
record will be broken and possibly monthly temperature records such
as hottest July day on record.
An extended heat wave early last month broke a number of temperature records around the province:
20 B.C. high-temperature records fall in heat wave

By 1 pm PDT today, temperatures at many locations in western Washington and Oregon were well into the 90s:
SEATTLE, TACOMA, EVERETT, AND VICINITY  

CITY SKY/WX TMP DP RH WIND PRES REMARKS
SEATAC AIRPORT MOSUNNY 89 65 44 W8 29.90F HX 91
MCCHORD AFB SUNNY 93 64 37 NW9 29.89F HX 94
EVERETT SUNNY 87 62 43 VRB5 29.92F
BOEING FIELD SUNNY 89 64 43 NW6 29.87F HX 90
RENTON SUNNY 91 67 44 NW8 29.86F HX 94
PUYALLUP FAIR 93 64 38 MISG 29.93F HX 95
BREMERTON SUNNY 90 61 37 NE7 29.92F
FORT LEWIS SUNNY 92 65 40 W8 29.88F HX 94
SHELTON SUNNY 94 64 37 S5 29.86F HX 95
TACOMA NARROWS SUNNY 89 63 41 NE7 29.89F HX 90

SOUTHWEST INTERIOR

CITY SKY/WX TMP DP RH WIND PRES REMARKS
OLYMPIA SUNNY 95 63 34 NE8 29.88F HX 96
CHEHALIS N/A 95 64 36 N9 29.88F HX 97
TOLEDO NOT AVBL
KELSO SUNNY 95 64 36 W5 29.84F HX 97
SCAPPOOSE, OR SUNNY 97 66 36 NE6 29.83F HX 100
VANCOUVER SUNNY 98 61 29 VRB6 29.83F HX 98
PORTLAND, OR MOSUNNY 96 64 34 W7 29.83F HX 98

CASCADE MOUNTAINS AND COLUMBIA GORGE

CITY SKY/WX TMP DP RH WIND PRES REMARKS
STAMPEDE PASS SUNNY 85 53 33 VRB3 30.11F
TROUTDALE, OR SUNNY 97 67 37 NW5 29.81F HX 101
THE DALLES, OR SUNNY 101 55 21 SW3 29.82F HX 99

EAST SLOPES

CITY SKY/WX TMP DP RH WIND PRES REMARKS
OMAK SUNNY 93 52 24 CALM 29.93F HX 90
WENATCHEE SUNNY 94 52 24 VRB3 29.91F HX 91
ELLENSBURG SUNNY 97 58 27 E9 29.94F HX 96
YAKIMA MOSUNNY 97 59 28 VRB3 29.89F HX 96

COLUMBIA BASIN

CITY SKY/WX TMP DP RH WIND PRES REMARKS
EPHRATA SUNNY 94 55 26 VRB5 29.92F HX 92
MOSES LAKE SUNNY 94 54 25 NE7 29.92F HX 92
HANFORD MOSUNNY 97 57 26 NE8 29.87F HX 96
PASCO SUNNY 96 61 31 VRB3 29.87F HX 96
HERMISTON, OR SUNNY 98 56 24 VRB5 29.87F HX 96

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