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Heat Wave May Bring Record Temperatures

Posted: 5:23 am PDT July 21, 2006Updated: 1:41 pm PDT July 21, 2006

SEATTLE, Wash. -- The National Weather Service has issued an excessive heat watch for the entire Pacific Northwest and forecasters said some records are likely to be set over the weekend.

Temperatures are expected to reach a high of 90 around Seattle on Friday, and they might climb even higher during the first part of the weekend.

In Seattle, the record high for Friday is 94 degrees, set in 1994. The high for July 22nd is 95 (1978), and the high for July 23rd is 99 (1991).

The excessive-heat warning is accompanied by an air-stagnation advisory through Saturday evening.

The Puget Sound Clean Air Agency also issued a smog watch for the weekend.

The warnings are issued based on the expected tolerance of those who live in the area.

As usual when the mercury rises, the National Weather Service recommends that people drink plenty of fluids, avoid overexertion, check up on relatives and neighbors and avoid leaving children or pets unattended in vehicles.

Also, there is help available for Seattle's elderly and disabled residents who are having a hard time with the heat.

The Central Area Motivation Program is offering portable air conditioners to those who qualify. For more information call 206-812-4956.

Copyright 2006 by KIROTV.com. The Associated Press contributed to this report. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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Detailed Forecast

Rebecca Stevenson
Rebecca Stevenson is Chief Meteorologist for KIRO 7 Eyewitness News. Stevenson holds the Seal of Approval from the American Meteorological Society (AMS) and the National Weather Association.
Meteorologist Profile

Weather to Expect:

Numerous showers and a risk of thunderstorms in western Washington tonight as a trough of low pressure moves through.
Showers will continue overnight into Saturday morning, temperatures will be chilly in the morning in the low to mid 30s. The showers will be locally heavy within a convergence zone which poses the risk of wet snow mixing with rain within the zone. The snow level is near 1,500 feet so that it would not be difficult for a heavy shower to bring wet snow as low as 1,000 feet. That would bring the potential to locations like Cougar mountain, Issaquah Alps and Tiger mountain through early Saturday morning. Accumulation is not expected but it would make for slippery roads in the higher elevations.
A new frontal system, storm #5, will bring increasing rain and breezy winds Saturday afternoon and evening. The storm will not be as powerful as the last 4 but will make itself known with more rain on top of already saturated soils. Highs will be cool in the 40s.
Sunday will begin with scattered showers which will decrease through the afternoon. More sunbreaks are expected and highs will be in the mid 40s.

Be prepared for winter driving in the passes. A Winter Weather Advisory is in effect for the Cascades through 6am as snow showers will bring an additional 6-10" of snow overnight....especially in the convergence zone between Stevens and Snoqualmie Pass. ~Rebecca

3 - Day Forecast
Thu
Wind and Rain
52
Fri
Showers
48
Sat
Rain
45
Seattle Metropolitan Area
Weather to Expect:

Numerous showers and a risk of thunderstorms in western Washington tonight as a trough of low pressure moves through.
Showers will continue overnight into Saturday morning, temperatures will be chilly in the morning in the low to mid 30s. The showers will be locally heavy within a convergence zone which poses the risk of wet snow mixing with rain within the zone. The snow level is near 1,500 feet so that it would not be difficult for a heavy shower to bring wet snow as low as 1,000 feet. That would bring the potential to locations like Cougar mountain, Issaquah Alps and Tiger mountain through early Saturday morning. Accumulation is not expected but it would make for slippery roads in the higher elevations.
A new frontal system, storm #5, will bring increasing rain and breezy winds Saturday afternoon and evening. The storm will not be as powerful as the last 4 but will make itself known with more rain on top of already saturated soils. Highs will be cool in the 40s.
Sunday will begin with scattered showers which will decrease through the afternoon. More sunbreaks are expected and highs will be in the mid 40s.

Be prepared for winter driving in the passes. A Winter Weather Advisory is in effect for the Cascades through 6am as snow showers will bring an additional 6-10" of snow overnight....especially in the convergence zone between Stevens and Snoqualmie Pass. ~Rebecca