Damaging Wind in Idaho, February 17, 2003

EASTERN WASHINGTON AND NORTH IDAHO AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WASHINGTON
230 PM PST MON FEB 17 2003

.SYNOPSIS...A PROGRESSIVE WEATHER PATTERN OF TROF PASSAGES
QUICKLY FOLLOWED BY BRIEF RIDGING...WILL KEEP SOME CHANCE OF RAIN AND
SNOW OVER EASTERN WASHINGTON AND NORTHERN IDAHO WITH THE BEST CHANCE
TO OCCUR WEDNESDAY NIGHT.

.DISCUSSION...
.TONIGHT THROUGH TUESDAY...SHORTWAVE TROF...LOCATED OVER WESTERN
WASHINGTON CONTINUES TO SPILL MOISTURE AND PRECIPITATION EAST OF THE
CASCADES THIS EVENING. ALTHOUGH THE 12Z MODESL FORECAST THIS
FEATURE TO DIVE SE OVERNIGHT...THE LATEST WV PIX SIGGEST IT IS
TAKING A MORE EASTERLY TRACK THAN EXPECTED. THE LATEST RADAR MOSAIC
SHOWED A WIDESPREAD BAND OF PRECIPITATION EXTENDING FROM SW OREGON
TO THE SE CORNER OF WA WITH A STEERING FLOW OUT OF THE WSW.
CONSEQUENTLY WE WILL HAVE TO BUMP UP POPS IN THE SOUTHERN THIRD
OF THE CWA TONIGHT....OR ROUGHLY SOUTH OF A LINE FROM ELLENSBURG TO
SPOKANE. PRECIPITATION TYPE COULD PROVE TO BE DIFFICULT...AS TEMPS
IN THE SPOKANE AREA HAVE ALREADY FALLEN TO NEAR FREEZING DUE
TO QUICK RADIATIONATIONAL COOLING AND A BATCH OF SHOWERS JUST
BEFORE SUNSET. ALTHOUGH THE LATEST BUFKIT SOUNDINGS DO NOT INDICATE
ANY SNOW FOR SPOKANE...IT SEEMS PRUDENT GIVEN CURRENT TEMPS...TO
PLACE IT IN FORECAST. THIS PRECIPITATION SHOULD CONTINUE INTO THE
MORNING HOURS AS THE UPPER LEVEL SHORTWAVE IS SLOW TO CLEAR OUT OF
THE REGION.

FARTHER NORTH...THE THREAT OF PRECIPITATION LOOKS MINIMAL AS THE
ATMOSPHERE BEGINS TO EXHIBIT A RAPID STABILIZATION WITH THE CORE OF
THE UPPER LEVEL COLD POOL SHIFTING EASTWARD OVERNIGHT. IN FACT THE
ONLY REMAINING SHOWERS WERE CONFINED TO THE EXTREME NORTHERN TIP OF
IDAHO THIS EVENING. SATELLITE PIX INDICATE THAT MOST OF THE SKIES
OVER THE NORTHERN ZONES ARE FAIRLY CLEAR THIS EVENING...OTHER THAN
SOME HIGH LEVEL MOISTURE ASSOCAITED WITH THE WEST WASHINGTON
SHORTWAVE. TEMPS HAVE RESPONDED WITH RAPID DROPS THIS EVENING WITH
MOST LOCATIONS ALREADY INTO THE LOWER TO MIDDLE 30S. DEWPOINTS ARE
ALSO IN THIS RANGE...SO THE TEMPS FALLS SHOULD SLOW. CURRENT
FORECAST OF VALLEY LOWS IN THE 20S SEEMS FINE FOR NOW.

...THE INFORMATION IN THIS PRODUCT CONCERNING WARNINGS AND FORECASTS
IS VALID ONLY AT THE TIME OF ISSUANCE. THE LATEST WARNING AND
FORECAST INFORMATION WILL BE FOUND IN THE APPROPRIATE PRODUCTS...

GEG 029/044/031/043/030/042 231364
COE 027/043/029/040/028/042 222364
PUW 031/043/031/045/030/043 642364
LWS 034/049/036/048/035/047 642364
CQV 027/045/029/045/028/043 222366
SPT 028/042/028/042/027/041 222366
WWP 028/033/030/038/029/040 322366
MWH 029/049/032/045/033/044 321364
EAT 029/047/033/045/032/045 211364
OMK 025/046/028/040/027/040 111364

.OTX...NONE.

IDZ001>004-026-027-WAZ031>038-041>044-181430-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SPOKANE WA
500 AM PST MON FEB 17 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WASHINGTON AND NORTH IDAHO

.DAY ONE... TODAY

A WINTER STORM WARNING CONTINUES TODAY FOR THE NORTHEAST WASHINGTON
AND IDAHO PANHANDLE MOUNTAINS. A COLD AND UNSTABLE AIR MASS WILL
CONTINUE TO RESIDE OVER THE INLAND PACIFIC NORTHWEST. THIS AIR
MASS...COMBINED WITH MODERATE SOUTHWEST WIND WILL CONTINUE TO BRING
SNOW TO THE MOUNTAINS ABOVE 3000 FEET IN NORTHEAST WASHINGTON AND
THE IDAHO PANHANDLE. FOR THE LATEST INFORMATION...SEE WEATHER
BULLETIN WWUS46 KOTX WSWOTX...FOR SPECIFICS.

.DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY

ANOTHER PACIFIC WEATHER SYSTEM WILL MOVE THROUGH THE REGION LATE
TUESDAY NIGHT AND WEDNESDAY WITH THE POTENTIAL FOR ADDITIONAL
MOUNTAIN SNOW. ANOTHER SERIES OF STORMS IS POSSIBLE TOWARD THE
WEEKEND BUT IS UNCERTAIN AT THIS TIME. NO WINTER STORM WATCHES HAVE BEEN
ISSUED FOR THIS STORM POTENTIAL DUE TO THE UNCERTAINTY OF THESE
EVENTS. FOR THE LATEST INFORMATION...SEE WEATHER BULLETIN WWUS46
KOTX WSWOTX...FOR SPECIFICS.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.