**HEAT ADVISORY IN EFFECT: Nearing 100 Degrees MidweekJuly 26th, 2009 by Matthew Leach
**A HEAT ADVISORY has been issued by the National Weather Service from noon Monday to 1 AM Thursday. Scroll down for details**
I like the National Weather Service…I really do. Sometimes they can be a little too conservative for me (remember, this is weather not politics ) and I get frustrated with them, but overall I think they do a great job. But reading their forecast discussion this afternoon almost made me faint. Here’s an excerpt of their discussion:
“BOTH THE NAM12 AND MM5 SOLUTIONS SHOW
SURFACE TEMPERATURES NEARING
100 DEG OVER THE INTERIOR OF W WA FROM SEATTLE SOUTHWARD BY WED
AFTERNOON. THE MESO MODELS HAVE BEEN OVER PREDICTING TEMPERATURES BY
A FEW DEGREES IN THESE SITUATIONS THIS YEAR…SO FORECASTS FOR A 98
AT KSEA (Sea-Tac Airport) AND 100 AT KOLM (Olympia) LOOK REASONABLE AT THIS TIME.”
Forecasts of 98 and 100 look “reasonable”? Oh no it doesn’t! But in all reality, according to the models we get some real pumpin’ heat in here Wednesday and would not be surprised if we scraped 100 degrees somewhere on the peninsula. On average, we end up two degrees warmer than Downtown Seattle on a given day in the summer, two degrees cooler in the winter (elevation and proximity to the Olympic Mountains plays a big role). If the NWS feels 98 degrees is “reasonable” for Sea-Tac on Wednesday, we could be looking at some serious heat over on this side of the water, my friends.
Anyway, you’ve heard enough from me. Tomorrow I’ll do the post about upcoming meteor showers like I promised. I’m already sick of reporting on this heatwave and I’m sure plenty of you are sick of hearing about it! Here’s the HEAT ADVISORY and AIR STAGNATION ADVISORY put out by the NWS moments ago:
URGENT – WEATHER MESSAGE
NATIONAL WEATHER SERVICE SEATTLE WA
341 PM PDT SUN JUL 26 2009
…HOT WEATHER EXPECTED ACROSS WESTERN WASHINGTON THIS WEEK…
.HOT WEATHER WILL DEVELOP OVER THE INTERIOR OF WESTERN
MONDAY AND TUESDAY AND WILL BE ACCOMPANIED BY HUMID AND STAGNANT
CONDITIONS. EVEN HOTTER TEMPERATURES ARE EXPECTED WEDNESDAY AND
POSSIBLY THURSDAY AS LOW LEVEL OFFSHORE FLOW DEVELOPS ACROSS THE
SOUTHWEST INTERIOR-EAST PUGET SOUND LOWLANDS-EVERETT AND VICINITY-
SEATTLE/BREMERTON AREA-TACOMA AREA-HOOD CANAL AREA-
341 PM PDT SUN JUL 26 2009
…AIR STAGNATION ADVISORY IN EFFECT FROM NOON MONDAY TO NOON
…HEAT ADVISORY IN EFFECT FROM NOON MONDAY TO 1 AM PDT
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED AN AIR
STAGNATION ADVISORY…WHICH IS IN EFFECT FROM NOON MONDAY TO NOON
PDT THURSDAY. A HEAT ADVISORY HAS ALSO BEEN ISSUED. THIS HEAT
ADVISORY IS IN EFFECT FROM NOON MONDAY TO 1 AM PDT THURSDAY. THE
EXCESSIVE HEAT WATCH IS NO LONGER IN EFFECT.
HOT AND HUMID CONDITIONS ARE EXPECTED MONDAY AND TUESDAY.
TEMPERATURES FROM THE UPPER 80S TO MID 90S EARLY IN THE WEEK WILL
BE ACCOMPANIED BY RATHER HUMID CONDITIONS AND ONLY LIGHT BREEZES.
TEMPERATURES AT NIGHT WILL REMAIN QUITE WARM…FALLING ONLY INTO
THE 60S FOR A COUPLE HOURS LATE AT NIGHT IN MOST PLACES. EVEN
HOTTER CONDITIONS ARE EXPECTED WEDNESDAY AND POSSIBLY THURSDAY AS
TEMPERATURES RISE WELL INTO THE 90S. A FEW LOCATIONS IN THE
INTERIOR SOUTH OF SEATTLE MAY REACH 100 DEGREES WEDNESDAY AFTERNOON.
THE STABLE AIR MASS ALOFT WILL LIMIT THE DISPERSION OF
OF POLLUTANTS ACROSS THE AREA AND MAY LEAD TO DETERIORATING AIR QUALITY.
TO AVOID HEAT STRESS…STAY HYDRATED AND AVOID STRENUOUS
DURING THE HEAT OF THE DAY.
CHECK UP ON ELDERLY OR DISABLED NEIGHBORS AND RELATIVES.
IF YOU ARE CONCERNED ABOUT THE BUILDUP OF POLLUTANTS…CHECK
YOUR LOCAL AIR QUALITY AGENCY FOR FURTHER INFORMATION.
7 DAY FORECAST