Alert archive / Washington / Snow Advisories in 2008
Snow Advisory 2, NWS Spokane, WA
NWS Spokane, WA issued this snow advisory at Jan 4, 2008, 3:42 AM PST for Douglas County, Okanogan County, Washington. It took effect at Jan 4, 2008, 4:00 AM PST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Jan 4, 2008, 3:42 AM PST (11:42 UTC)
- In effect from
- Jan 4, 2008, 4:00 AM PST
- Expired
- Jan 4, 2008, 3:06 PM PST
- In force
- 11 hr
- Issued by
- NWS Spokane, WA
Counties Douglas County, WA, Okanogan County, WA
The radar
The Spokane radar (KOTX), 164 km from the middle of the area, began a volume at 11:42 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 11.7 hours before the alert went out and 252 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1431 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 265 m²/s²
- 0-3 km storm-relative helicity
- 359 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS46 KOTX 041142 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 342 AM PST FRI JAN 4 2008 ...ACTIVE WINTER WEATHER CONTINUES.. .THE NEXT IN A SERIES OF PACIFIC STORM SYSTEMS WILL MOVE INTO THE REGION THIS MORNING AND CONTINUE THROUGH TONIGHT. THIS STORM WILL BRING ANOTHER ROUND OF SIGNIFICANT SNOW TO THE HIGHER ELEVATIONS WITH WITH POCKETS OF FREEZING RAIN ALSO POSSIBLE. WAZ042-041945- /O.CAN.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ /O.NEW.KOTX.SN.Y.0002.080104T1200Z-080105T1200Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY 342 AM PST FRI JAN 4 2008 ...SNOW ADVISORY IN EFFECT UNTIL 4 AM PST SATURDAY... ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 4 AM PST SATURDAY. THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED. SNOW WILL RETURN TO THE CASCADES THIS MORNING AND CONTINUE THROUGH MUCH OF THE DAY BEFORE TURNING TO SHOWERS THIS EVENING. THIS STORM WILL LIKELY DROP ANOTHER 2 TO 4 INCHES OF SNOW OVER VALLEYS...WITH 5 TO 10 INCHES POSSIBLE ABOVE 3000 FEET. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...LEAVENWORTH... MAZAMA...TWISP...WINTHROP...STEHEKIN...CONCONULLY. $$ WAZ043-041945- /O.CAN.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ /O.NEW.KOTX.SN.Y.0002.080104T1200Z-080105T0000Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM 342 AM PST FRI JAN 4 2008 ...SNOW ADVISORY IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. THE WINTER WEATHER ADVISORY HAS BEEN CANCELLED. SNOW WILL RETURN TO THE AREA THIS MORNING AND CONTINUE THROUGH MUCH OF THE DAY BEFORE TURNING TO SHOWERS BY AFTERNOON. THIS STORM WILL LIKELY BRING 2 TO 3 INCHES OF SNOW TO THE AREA BY LATE THIS AFTERNOON. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...OMAK... OKANOGAN...BREWSTER...BRIDGEPORT...OROVILLE...NESPELEM. $$ WAZ038-041945- /O.UPG.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ /O.NEW.KOTX.HS.W.0001.080104T1200Z-080105T1200Z/ OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS 342 AM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... ...WINTER WEATHER ADVISORY NO LONGER IN EFFECT... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A HEAVY SNOW WARNING ABOVE 3000 FEET...WHICH IS IN EFFECT UNTIL 4 AM PST SATURDAY. THE WINTER WEATHER ADVISORY IS NO LONGER IN EFFECT. SNOW WILL RETURN TO THE AREA THIS MORNING AND CONTINUE THROUGH THE DAY BEFORE TURNING TO SHOWERS THIS EVENING. 2 TO 4 INCHES OF SNOW ARE EXPECTED IN THE VALLEYS BEFORE THE SNOW TRANSITIONS TO RAIN OR A RAIN/SNOW MIX. IN THE MOUNTAINS SNOW THROUGH THE DAY WILL TRANSITION OVER TO SNOW SHOWERS THIS EVENING. THE SNOW SHOWERS ARE EXPECTED TO BRING HEAVY SNOW AT TIMES THROUGH THE EVENING HOURS RESULTING IN SNOW ACCUMULATIONS OF 8 TO 12 INCHES BY FRIDAY EVENING. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS. $$ IDZ001-WAZ037-041945- /O.NEW.KOTX.HS.W.0001.080104T1200Z-080105T1200Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD... NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE... SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL... NORTHEAST WASHINGTON SKI RESORTS 342 AM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A HEAVY SNOW WARNING ABOVE 3000 FEET...WHICH IS IN EFFECT UNTIL 4 AM PST SATURDAY. SNOW WILL RETURN TO THE AREA AROUND MID MORNING AND CONTINUE THROUGH LATE THIS AFTERNOON BEFORE TURNING TO SHOWERS THIS EVENING. 2 TO 4 INCHES OF WET SNOW IS EXPECTED IN THE VALLEYS BEFORE THE SNOW TRANSITIONS TO A RAIN/SNOW MIX OR ALL RAIN. IN THE MOUNTAINS SNOW WILL TRANSITION OVER TO SNOW SHOWERS THIS EVENING. THE SNOW SHOWERS ARE EXPECTED TO BRING HEAVY SNOW AT TIMES THROUGH THE EVENING RESULTING IN TOTAL ACCUMULATIONS OF 8 TO 14 INCHES OF SNOW BY SATURDAY MORNING. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD...NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE...SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL...NORTHEAST WASHINGTON SKI RESORTS. $$ WAZ034-041945- /O.EXB.KOTX.WW.Y.0002.080104T1200Z-080105T0000Z/ MOSES LAKE AREA- INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA... OTHELLO...QUINCY 342 AM PST FRI JAN 4 2008 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A WINTER WEATHER ADVISORY...WHICH IS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. RAIN...LIGHT SNOW AND POCKETS OF FREEZING RAIN ARE EXPECTED TO BEGIN ACROSS THE LOWER COLUMBIA BASIN AREA THIS MORNING...BEFORE TURNING OVER TO ALL RAIN THIS AFTERNOON. SNOW ACCUMULATIONS ARE EXPECTED TO REMAIN BELOW AN INCH...BUT THE COMBINATION OF MIXED PRECIPITATION WARRANTS AN ADVISORY FOR THIS AREA. A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...MOSES LAKE... EPHRATA...OTHELLO...QUINCY. $$ WAZ041-044-041945- /O.EXT.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ WENATCHEE AREA-WATERVILLE PLATEAU- INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT... CASHMERE...WATERVILLE...MANSFIELD 342 AM PST FRI JAN 4 2008 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. SNOW WILL RETURN THIS MORNING AND CONTINUE THROUGH MUCH OF THE DAY BEFORE TURNING TO SHOWERS BY AFTERNOON. THIS STORM WILL LIKELY DROP ANOTHER 1 TO 3 INCHES OF SNOW OVER THE AREA. THERE IS ALSO A CHANCE OF FREEZING RAIN DURING THE MORNING...PARTICULARLY IN THE WENATCHEE VALLEY AND ONTO THE WATERVILLE PLATEAU. A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...WENATCHEE... CHELAN...ENTIAT...CASHMERE...WATERVILLE...MANSFIELD. $$
3 follow-up statements
000 WWUS46 KOTX 041305 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 505 AM PST FRI JAN 4 2008 ...ACTIVE WINTER WEATHER CONTINUES.. .THE NEXT IN A SERIES OF PACIFIC STORM SYSTEMS WILL MOVE INTO THE REGION THIS MORNING AND CONTINUE THROUGH TONIGHT. THIS STORM WILL BRING ANOTHER ROUND OF SIGNIFICANT SNOW TO THE HIGHER ELEVATIONS WITH WITH POCKETS OF FREEZING RAIN ALSO POSSIBLE. WAZ038-042115- /O.CON.KOTX.HS.W.0001.000000T0000Z-080105T1200Z/ OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS 505 AM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... A HEAVY SNOW WARNING ABOVE 3000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. SNOW WILL RETURN TO THE AREA THIS MORNING AND CONTINUE THROUGH THE DAY BEFORE TURNING TO SHOWERS THIS EVENING. 2 TO 4 INCHES OF SNOW ARE EXPECTED IN THE VALLEYS BEFORE THE SNOW TRANSITIONS TO RAIN OR A RAIN/SNOW MIX. IN THE MOUNTAINS SNOW THROUGH THE DAY WILL TRANSITION OVER TO SNOW SHOWERS THIS EVENING. THE SNOW SHOWERS ARE EXPECTED TO BRING HEAVY SNOW AT TIMES THROUGH THE EVENING HOURS RESULTING IN SNOW ACCUMULATIONS OF 8 TO 12 INCHES BY FRIDAY EVENING. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS. $$ IDZ001-WAZ037-042115- /O.CON.KOTX.HS.W.0001.000000T0000Z-080105T1200Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD... NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE... SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL... NORTHEAST WASHINGTON SKI RESORTS 505 AM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... A HEAVY SNOW WARNING ABOVE 3000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. SNOW WILL RETURN TO THE AREA AROUND MID MORNING AND CONTINUE THROUGH LATE THIS AFTERNOON BEFORE TURNING TO SHOWERS THIS EVENING. 2 TO 4 INCHES OF WET SNOW IS EXPECTED IN THE VALLEYS BEFORE THE SNOW TRANSITIONS TO A RAIN/SNOW MIX OR ALL RAIN. IN THE MOUNTAINS SNOW WILL TRANSITION OVER TO SNOW SHOWERS THIS EVENING. THE SNOW SHOWERS ARE EXPECTED TO BRING HEAVY SNOW AT TIMES THROUGH THE EVENING RESULTING IN TOTAL ACCUMULATIONS OF 8 TO 14 INCHES OF SNOW BY SATURDAY MORNING. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD...NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE...SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL...NORTHEAST WASHINGTON SKI RESORTS. $$ WAZ042-042115- /O.CON.KOTX.SN.Y.0002.000000T0000Z-080105T1200Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY 505 AM PST FRI JAN 4 2008 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. SNOW WILL RETURN TO THE CASCADES THIS MORNING AND CONTINUE THROUGH MUCH OF THE DAY BEFORE TURNING TO SHOWERS THIS EVENING. THIS STORM WILL LIKELY DROP ANOTHER 3 TO 5 INCHES OF SNOW OVER VALLEYS...WITH 5 TO 10 INCHES EXPECTED ABOVE 3000 FEET. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...LEAVENWORTH... MAZAMA...TWISP...WINTHROP...STEHEKIN...CONCONULLY. $$ WAZ043-042115- /O.CON.KOTX.SN.Y.0002.000000T0000Z-080105T0000Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM 505 AM PST FRI JAN 4 2008 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. SNOW WILL RETURN TO THE AREA THIS MORNING AND CONTINUE THROUGH MUCH OF THE DAY BEFORE TURNING TO SHOWERS BY AFTERNOON. THIS STORM WILL LIKELY BRING 2 TO 3 INCHES OF SNOW TO THE AREA BY LATE THIS AFTERNOON. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...OMAK... OKANOGAN...BREWSTER...BRIDGEPORT...OROVILLE...NESPELEM. $$ WAZ034-041-044-042115- /O.CON.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ MOSES LAKE AREA-WENATCHEE AREA-WATERVILLE PLATEAU- INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA... OTHELLO...QUINCY...WENATCHEE...CHELAN...ENTIAT...CASHMERE... WATERVILLE...MANSFIELD 505 AM PST FRI JAN 4 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. SNOW WILL RETURN THIS MORNING AND CONTINUE THROUGH MUCH OF THE DAY BEFORE TURNING TO SHOWERS BY AFTERNOON. THIS STORM WILL LIKELY DROP ANOTHER 1 TO 3 INCHES OF SNOW OVER THE AREA. THERE IS ALSO A CHANCE OF FREEZING RAIN DURING THE MORNING...PARTICULARLY IN THE WENATCHEE VALLEY AND ONTO THE WATERVILLE PLATEAU. A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...WENATCHEE... CHELAN...ENTIAT...CASHMERE...WATERVILLE...MANSFIELD...MOSES LAKE...EPHRATA...OTHELLO...QUINCY. $$
000 WWUS46 KOTX 041813 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 1013 AM PST FRI JAN 4 2008 ...ACTIVE WINTER WEATHER CONTINUES.. .THE NEXT IN A SERIES OF PACIFIC STORM SYSTEMS WILL MOVE INTO THE REGION TODAY AND TONIGHT. THIS STORM WILL BRING HEAVY WET SNOW TO PORTIONS OF CENTRAL AND NORTHERN WASHINGTON. WAZ034-041915- /O.CAN.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ MOSES LAKE AREA- INCLUDING THE FOLLOWING LOCATIONS...MOSES LAKE...EPHRATA... OTHELLO...QUINCY 1013 AM PST FRI JAN 4 2008 ...WINTER WEATHER ADVISORY IS CANCELLED FOR THE MOSES LAKE AREA... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE WINTER WEATHER ADVISORY FOR THE MOSES LAKE AREA. AS OF 10 AM...TEMPERATURES HAD WARMED ABOVE FREEZING OVER THE MAJORITY OF THE MOSES LAKE AREA. THERE MAY BE A FEW SPOTS NEAR ROYAL CITY AND GEORGE THAT MAY EXPERIENCE SOME FREEZING RAIN THROUGH 11 AM...BUT THE MAJORITY OF THE PRECIPITATION ALONG INTERSTATE 90 FROM VANTAGE TO MOSES LAKE WILL FALL AS RAIN TODAY. $$ WAZ038-050000- /O.CON.KOTX.HS.W.0001.000000T0000Z-080105T1200Z/ OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS 1013 AM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... A HEAVY SNOW WARNING ABOVE 3000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY FOR THE OKANOGAN HIGHLANDS. ACCUMULATING SNOW IS EXPECTED IN THE VALLEYS OF THE OKANOGAN HIGHLANDS THROUGH MID AFTERNOON. THE COMMUNITIES OF REPUBLIC AND CHESAW CAN EXPECT AN ADDITIONAL 2 TO 4 INCHES OF SNOW...WITH LOCALLY HIGHER AMOUNTS NEAR THE CANADIAN BORDER. PRECIPITATION WILL CHANGE TO RAIN THIS AFTERNOON IN THE VALLEYS...AS THE SNOW LEVEL INCREASES TO 3000 FEET. FOR THE MOUNTAINS...ADDITIONAL SNOW ACCUMULATIONS OF 8 TO 12 INCHES ARE LIKELY BY LATE TONIGHT. THE HEAVIEST SNOW IS EXPECTED LATE THIS MORNING INTO THIS AFTERNOON. SNOWFALL RATES OVER AN INCH PER HOUR WILL BE LIKELY IN THE SHERMAN PASS AREA. MOTORISTS SHOULD EXPECT DANGEROUS WINTER DRIVING CONDITIONS. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS. $$ IDZ001-WAZ037-050000- /O.CON.KOTX.HS.W.0001.000000T0000Z-080105T1200Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD... NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE... SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL... NORTHEAST WASHINGTON SKI RESORTS 1013 AM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... A HEAVY SNOW WARNING ABOVE 3000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. HEAVY SNOW WILL DEVELOP OVER THE MOUNTAINS OF NORTHEAST WASHINGTON AND THE FAR NORTHERN IDAHO PANHANDLE THIS MORNING. SNOW LEVELS LATE THIS MORNING AND EARLY THIS AFTERNOON WILL BE NEAR THE VALLEY FLOOR ALONG THE CANADIAN BORDER...BUT WILL RISE TO 3000 TO 4000 FEET BY LATE THIS AFTERNOON. THE COMMUNITIES OF PORTHILL... METALINE FALLS...AND NORTHPORT CAN EXPECT 2 TO 4 INCHES OF SNOW THIS AFTERNOON. FOR THE MOUNTAINS 8 TO 14 INCHES OF SNOW IS EXPECTED BY SATURDAY MORNING. THE HEAVIEST SNOW WILL FALL THIS AFTERNOON...BUT ACCUMULATING SNOW IS EXPECTED THROUGH TONIGHT. THE SNOW TODAY WILL BE HEAVY AND WET. PEOPLE WITH HEALTH CONCERNS SHOULD BE VERY CAREFUL SHOVELING THIS TYPE OF SNOW. TAKE BREAKS AND DO NOT OVER EXERT YOURSELF. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD...NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE...SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL...NORTHEAST WASHINGTON SKI RESORTS. $$ WAZ042-050000- /O.CON.KOTX.SN.Y.0002.000000T0000Z-080105T1200Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY 1013 AM PST FRI JAN 4 2008 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. SNOW WILL BE HEAVY THROUGH EARLY THIS AFTERNOON OVER THE EAST SLOPES OF THE CASCADES. SNOWFALL RATES OF AN INCH PER HOUR WILL BE LIKELY IN THE LEAVENWORTH...TWISP...STEHEKIN...AND WINTHROP AREAS THROUGH 1 PM. TOTAL SNOWFALL OF 5 TO 8 INCHES ARE LIKELY IN THE VALLEYS BY THE TIME SNOW DECREASES TO LIGHT SNOW SHOWERS THIS AFTERNOON. ACCUMULATIONS UP TO 10 INCHES WILL BE POSSIBLE IN THE MOUNTAINS AT ELEVATIONS ABOVE 3000 FEET. THE SNOW TODAY WILL BE HEAVY AND WET. PEOPLE WITH HEALTH CONCERNS SHOULD BE VERY CAREFUL SHOVELING THIS TYPE OF SNOW. TAKE BREAKS AND DO NOT OVER EXERT YOURSELF. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...LEAVENWORTH... MAZAMA...TWISP...WINTHROP...STEHEKIN...CONCONULLY. $$ WAZ043-050000- /O.CON.KOTX.SN.Y.0002.000000T0000Z-080105T0000Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM 1013 AM PST FRI JAN 4 2008 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. AN ADDITIONAL 3 TO 4 INCHES OF HEAVY WET SNOW IS EXPECTED BY MID AFTERNOON IN THE OMAK...BREWSTER...AND OROVILLE AREAS. LOCAL AMOUNTS UP TO 5 INCHES WILL BE POSSIBLE FOR ELEVATIONS ABOVE 2000 FEET. SNOW IS EXPECTED TO FALL HEAVILY BETWEEN 10 AM AND 2 PM. DRIVING CONDITIONS WILL BECOME TREACHEROUS QUICKLY TODAY. THE SNOW TODAY WILL BE HEAVY AND WET. PEOPLE WITH HEALTH CONCERNS SHOULD BE VERY CAREFUL SHOVELING THIS TYPE OF SNOW. TAKE BREAKS AND DO NOT OVER EXERT YOURSELF. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...OMAK... OKANOGAN...BREWSTER...BRIDGEPORT...OROVILLE...NESPELEM. $$ WAZ041-044-050000- /O.CON.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ WENATCHEE AREA-WATERVILLE PLATEAU- INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT... CASHMERE...WATERVILLE...MANSFIELD 1013 AM PST FRI JAN 4 2008 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON. HEAVY SNOW WILL CONTINUE IN THE WENATCHEE AREA AND OVER THE WATERVILLE PLATEAU THROUGH EARLY AFTERNOON. SNOW TOTALS OF 3 TO 4 INCHES WILL BE COMMON BY 1 PM...BEFORE SNOW DECREASES TO LIGHT SNOW SHOWERS. A FEW SPOTS OVER THE WATERVILLE PLATEAU COULD RECEIVE AS MUCH AS 5 INCHES BY THE TIME SNOW COMES TO AN END BY MID AFTERNOON. THE SNOW TODAY WILL BE HEAVY AND WET. PEOPLE WITH HEALTH CONCERNS SHOULD BE VERY CAREFUL SHOVELING THIS TYPE OF SNOW. TAKE BREAKS AND DO NOT OVER EXERT YOURSELF. A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. THIS ADVISORY INCLUDES THE FOLLOWING LOCATIONS...WENATCHEE... CHELAN...ENTIAT...CASHMERE...WATERVILLE...MANSFIELD. $$
000 WWUS46 KOTX 042306 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 306 PM PST FRI JAN 4 2008 ...ACTIVE WINTER WEATHER CONTINUES.. .THE NEXT IN A SERIES OF PACIFIC STORM SYSTEMS WILL AFFECT THE REGION THROUGH TONIGHT. THIS STORM WILL BRING HEAVY WET SNOW TO THE MOUNTAINS OF NORTHEAST WASHINGTON AND FAR NORTHERN IDAHO. WAZ042-050015- /O.CAN.KOTX.SN.Y.0002.000000T0000Z-080105T1200Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY 306 PM PST FRI JAN 4 2008 ...SNOW ADVISORY IS CANCELLED... SIGNIFICANT SNOWS ARE NO LONGER EXPECTED IN THE VALLEYS OF THE EAST SLOPES OF THE CASCADES. AN ADDITIONAL INCH OF SNOW CAN BE EXPECTED TONIGHT IN THE VALLEYS OF THE EAST SLOPES OF THE NORTHERN WASHINGTON CASCADES...INCLUDING THE COMMUNITIES OF MAZAMA... LEAVENWORTH...AND WINTHROP. FOR THE HIGHER ELEVATIONS ALONG THE CASCADE CREST...AN ADDITIONAL 2 TO 5 INCHES IS LIKELY BY SATURDAY MORNING. MOTORISTS PLANNING TO TRAVEL ON HIGHWAY 2 THROUGH STEVENS PASS SHOULD BE PREPARED FOR WINTER DRIVING CONDITIONS. THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE SNOW ADVISORY. $$ WAZ043-050015- /O.CAN.KOTX.SN.Y.0002.000000T0000Z-080105T0000Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM 306 PM PST FRI JAN 4 2008 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE SNOW ADVISORY FOR THE OKANOGAN VALLEY. ADDITIONAL SNOW ACCUMULATIONS WILL BE AROUND AN INCH FOR ELEVATIONS ABOVE 2000 FEET IN THE OKANOGAN VALLEY. FOR THE COMMUNITIES OF OMAK...BREWSTER...AND OROVILLE...ADDITIONAL ACCUMULATIONS WILL BE MINOR AS A MIXTURE OF RAIN AND WET SNOW OCCUR THIS EVENING. $$ WAZ041-044-050015- /O.CAN.KOTX.WW.Y.0002.000000T0000Z-080105T0000Z/ WENATCHEE AREA-WATERVILLE PLATEAU- INCLUDING THE FOLLOWING LOCATIONS...WENATCHEE...CHELAN...ENTIAT... CASHMERE...WATERVILLE...MANSFIELD 306 PM PST FRI JAN 4 2008 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE WINTER WEATHER ADVISORY. THE THREAT OF ADDITIONAL ACCUMULATING SNOW HAS COME TO AN END IN THE WENATCHEE AREA. $$ IDZ001-WAZ037-050600- /O.EXT.KOTX.HS.W.0001.000000T0000Z-080105T0600Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS- INCLUDING THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD... NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE... SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL... NORTHEAST WASHINGTON SKI RESORTS 306 PM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING NOW IN EFFECT UNTIL 10 PM PST THIS EVENING ABOVE 3000 FEET... THE HEAVY SNOW WARNING ABOVE 3000 FEET IS NOW IN EFFECT UNTIL 10 PM PST THIS EVENING. AN ADDITIONAL 2 TO 4 INCHES OF SNOW IS EXPECTED THIS EVENING FOR THE MOUNTAINS IN NORTHEAST WASHINGTON AND FAR NORTHERN IDAHO. SNOW ACCUMULATIONS IN THE VALLEYS WILL BE MINOR. TOTAL SNOW ACCUMULATIONS OF UP TO A 12 INCHES ARE POSSIBLE BY LATE TONIGHT IN THE MOUNTAINS AROUND CHEWELAH...COLLVILLE...AND SANDPOINT. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...SCHWEITZER MOUNTAIN ROAD...NORTHERN PANHANDLE SKI RESORTS...HIGHWAY 20 EAST OF COLVILLE...SPRINGDALE-HUNTERS ROAD...ORIN-RICE ROAD...FLOWERY TRAIL...NORTHEAST WASHINGTON SKI RESORTS. $$ WAZ038-050715- /O.CON.KOTX.HS.W.0001.000000T0000Z-080105T1200Z/ OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS 306 PM PST FRI JAN 4 2008 ...HEAVY SNOW WARNING REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET... A HEAVY SNOW WARNING ABOVE 3000 FEET REMAINS IN EFFECT UNTIL 4 AM PST SATURDAY. AN ADDITIONAL 2 TO 3 INCHES OF SNOW IS LIKELY ABOVE 3000 FEET TONIGHT OVER THE OKANOGAN HIGHLAND. TOTAL SNOW AMOUNTS UP TO 10 INCHES WILL BE POSSIBLE FOR THE HIGH ELEVATIONS AROUND SHERMAN PASS. THE HEAVIEST SNOW IS EXPECTED THIS AFTERNOON AND EARLY THIS EVENING. MOTORISTS SHOULD EXPECT DANGEROUS WINTER DRIVING CONDITIONS. A HEAVY SNOW WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN EMERGENCY. IF YOU MUST...KEEP AN EXTRA FLASHLIGHT...FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY. THIS WARNING INCLUDES THE FOLLOWING LOCATIONS...CHESAW ROAD... HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD...SHERMAN PASS. $$
What forecasters said that day
The local office's own words before this snow advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Spokane, WA wrote its last area forecast discussion before this snow advisory went out at Jan 4, 3:03 AM PST, 39 minutes earlier.
Area forecast discussion, Jan 4, 3:03 AM PST, 39 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
303 AM PST FRI JAN 4 2008
.SYNOPSIS...
A STORMY PATTERN RESULTING IN MOUNTAIN SNOW...MOSTLY VALLEY RAIN
AND BREEZY WINDS WILL BE OVER THE INLAND INLAND NORTHWEST THROUGH
THE WEEKEND.
&&
.DISCUSSION...
TODAY AND TONIGHT...A WELL WRAPPED UP LOW PRESSURE SYSTEM CURRENTLY
MOVING INSIDE 135W WILL BE THE NEXT IN A SERIES OF WEATHER SYSTEMS
TO MOVE THROUGH THE REGION. SOUTH-SOUTHWEST UPPER LEVEL FLOW
APPEARS TO HAVE TAPPED INTO ANOTHER ROUND OF PACIFIC MOISTURE.
PWS OFF OF THE 00Z SPOKANE SOUNDING WAS .46 OF AN INCH OF WATER
WHICH MATCHED UP WELL WITH THE MODEL PW AND FOR TODAY THAT
INCREASES TO OVER A HALF INCH. EXPECT WARM OVER RUNNING
PRECIPITATION TO BE ON THE CASCADES BETWEEN 12-15Z AND THEN PUSH
RAPIDLY ACROSS THE FORECAST AREA THROUGH THE DAY. LIFT ALONG THE
285-295 ISENTROPIC SURFACE ISNT GREAT...BUT BOTH UPGLIDE AND UP
SLOPING FLOW INTO THE CASCADES AND NORTHERN MOUNTAINS IS EXTENDED
FOR A PERIOD OF ABOUT 12 HOURS. THIS EXTENDED PERIOD OF LIFT IN
CONJUNCTION WITH AMPLE MOISTURE WILL RESULT IN SOME PRETTY GOOD
QPF AMOUNTS ACROSS THE AREA. IN FACT QPF AMOUNTS OFF THE 00-06Z
MODELS ARE PRETTY IMPRESSIVE AND COMPARING THESE TO WHAT WAS
OBSERVED YESTERDAY BOTH POPS AND QPF AMOUNTS WERE BUMPED UP. THE
MAIN ISSUE IS WHAT THE PTYPE WILL BE FOR TODAY INTO TONIGHT. COLD
AIR IS DAMMED UP AGAINST THE CASCADES EAST ACROSS THE NORTHERN
MOUNTAINS. SOME MIXING WAS OBSERVED TODAY IN SOME OF THE NORTHERN
VALLEYS...HOWEVER CLEARING SKIES EARLIER THIS EVENING ALLOWED
SURFACE TEMPERATURES TO COOL PRETTY RAPIDLY. SO WE WILL HAVE A
PRETTY MIXED BAG OF PRECIPITATION ACROSS THE FORECAST AREA. IN THE
WENATCHEE VALLEY/WATERVILLE PLATEAU EXPECT PRECIPITATION MAINLY AS
SNOW WITH AREAS OF FREEZING RAIN THIS MORNING. THESE AREAS DIDNT
WARM UP VERY QUICK TODAY AND THINK IT WILL TAKE SOME TIME TODAY
BEFORE THE PRECIPITATION TURNS OVER TO RAIN. IN THE MOSES LAKE
AREA PRECIPITATION IS EXPECTED TO BEGIN AS A MIX OF
RAIN/SNOW/FREEZING RAIN...BEFORE FINALLY TURNING OVER TO ALL RAIN
LATER THIS AFTERNOON. WHILE NONE OF THE PRECIPITATION WILL AMOUNT
TO ADVISORY CRITERIA THIS MIXTURE WILL MOST DEFINITELY MAKE FOR
TREACHOROUS CONDITONS FOR SEVERAL HOURS THIS MORNING. ACROSS THE
NORTHERN ZONES SNOW AMOUNTS WERE UNDER ESTIMATED WITH THIS LAST
SYSTEM. BUT IN ADDITION OF AN EXTENDED PERIOD OF ISENTRPOIC LIFT
THE ATMOPSHERE BEHIND THE FRONT DESTABILIZES VERY QUICKLY. A
SERIES OF WEAK SHORT WAVES MOVING THROUGH THE AREA SHOULD KEEP
CONVECTIVE SNOW SHOWERS GOING WELL INTO THE EVENING HOURS. AS
SUCH EXPECT SNOW AMOUNTS ACROSS THE HIGHLANDS AND NORTHEAST
MOUNTAINS TO REACH WARNING CRITERIA BY SATURDAY MORNING. THIS
SURFACE LOW IS TAKING A SIMILAR TRACK OF THE PREVIOUS LOW BUT IS
MUCH DEEPER AND EXPECT THE WINDS TO PICK UP THROUGH THE DAY AND
BECOME QUITE GUSTY LATER THIS AFTERNOON AND EVENING. A WIND
ADVISORY HAS BEEN ISSUED FOR THE CAMAS PRAIRIE AND WILL LET THIS
RIDE. WINDS ACROSS THE BASIN AND INTO THE SPOKANE AREA WILL NEED
TO BE MONITORED LATER TODAY AS WELL. /TOBIN
SATURDAY THROUGH THURSDAY...LONGWAVE PATTERN CHANGES FROM A LONGWAVE TROF
WITH AXIS POSITIONED OVER THE PACIFIC NORTHWEST COAST SATURDAY
THAT MOVES ONSHORE AND DE-AMPLIFIES OVER THE WEEKEND. EVENTUALLY
THE DE-AMPLIFICATIONS MORPHS THE TROF INTO A FLAT ZONAL FLOW FOR
TUESDAY AND WEDNESDAY. THURSDAY AND FRIDAY SOME AMPLIFICATION
TAKES PLACE OVER THE REST TO SHOW SOME RIDGING...NOT VERY
PRONOUNCED...BUT RIDGING NEVERTHELESS.
MOST IMPORTANT IN THE SATURDAY THROUGH MONDAY PERIOD IS THE
CONDITIONALLY UNSTABLE AIRMASS NESTED IN THE LONGWAVE
TROF...REFLECTED BY THE IMPRESSIVE LAPSE RATES AT 700-500MB
REMAINING NEAR 8 C/KM THROUGH THIS SATURDAY THROUGH MONDAY PERIOD
OVER EASTERN WASHINGTON AND NORTHERN IDAHO. WILL NEED TO REMAIN
VIGILANT IN WATCHING FOR SHORTWAVES OF ALL SORTS OF SIZES...TO AS
SMALL AS THE MESO SCALE AND POSSIBLY BELOW WHICH COULD KICK OFF
ENOUGH LIFT TO RESULT IN IMPRESSIVE AND HIGHLY LOCALIZED
CONVECTIVE SNOWFALL.
A SYNOPTIC SCALE LOW PRESSURE SYSTEM WITH A WELL MAINTAINED TAP
INTO SUB-TROPICAL MOISTURE AFFECTS THE AREA TUESDAY. THE EARLIER
DISCUSSED LONGWAVE ZONAL FLOW SETUP ALLOWS THIS SYSTEM TO APPROACH
IN MORE OF A WEST TO EAST FASHION RATHER THAN THE THE SOUTHWEST TO
NORTHEAST TRAJECTORIES TAKEN BY THIS PAST THURSDAYS SYSTEM AND THE
ONE PASSING THROUGH TODAY. WILL DELINEATE THIS SCENARIO WITH A
RETURN TO STABLE RAIN/SNOW AND SOMEWHAT HIGHER POPS IN COMPARISON
TO THE SHOWERY DEPICTION FOR SATURDAY THROUGH MONDAY.
WEDNESDAY WILL INVOLVE A BRIEF PERIOD OF POST FRONTAL SHOWERY
CONDITIONS ASSOCIATED WITH THE EXIT OF THE EARLIER DISCUSSED
TUESDAY STORM SYSTEM...AND WITH LATEST MODELS SHOWING SOME WESTERN
US AMPLIFICATION TO MORE OF A RIDGE...BUT STILL A NOISY RIDGE AS
MODELS SHOW LOTS OF CLUTTER IN THE VORTICITY FIELD...WHICH MAY
MEAN THERE COULD BE SHORTWAVES TRAVERSING THROUGH IT...POPS LOWER
BUT STILL DEPICT SOME SNOW SHOWER COVERAGE WITH THE EXCEPTION OF
PERHAPS A SMALL AREA JUST DOWNSTREAM AND IN CLOSE PROXIMITY TO
THE CASCADE CREST.
/PELATTI
&&
.AVIATION...
FIRST WEATHER SYSTEM HAS EXITED EAST OF ALL TAF SITES FOR THE NIGHT.
MAIN PROBLEM THROUGH 12Z WILL BE PATCHY FOG HANGING OVER THE EAST
WENATCHEE AREA...WHICH WILL CONTINUE TO PLAGUE THAT SITE WITH HIGHLY
VARIABLE CONDITIONS RAPIDLY VARYING FROM VFR TO LIFR. ALL OTHER TAFS
WILL BE VFR THROUGH THAT TIME. AFT 12Z...THE NEXT SYSTEM MOVES IN
FROM THE SW. IT WILL LIKELY REDUCE THE FOG PROBLEM IN EAT...BUT IT
WILL KEEP VSBYS IN THE IFR/LIFR CATEGORY DUE TO SNOW. THIS WILL ALSO
IMPACT MWH BY 14Z OR SO HOWEVER IT STANDS A BETTER CHANCE OF TURNING
TO RAIN IMPROVING VSBYS. THE REMAINDER OF THE TAF SITES WILL ALSO
SEE PRECIP CHANCES INCREASE THROUGH THE DAY...WITH MVFR CIGS LIKELY
AT GEG AND COE. CONDITIONS WILL IMPROVE LATE IN THE PERIOD AS A COLD
FRONT PASSES WEST OVER THE CASCADES. FX
&&
.PRELIMINARY POINT TEMPS/POPS...
SPOKANE 39 35 35 27 32 22 / 90 50 30 20 30 30
COEUR DALENE 40 34 37 27 33 22 / 90 50 40 40 30 30
PULLMAN 47 36 40 31 31 25 / 90 50 30 20 30 30
LEWISTON 52 38 46 33 38 30 / 60 50 30 20 30 30
COLVILLE 37 33 35 28 31 22 / 100 80 60 30 30 30
SANDPOINT 36 33 34 25 33 21 / 100 80 60 40 40 40
KELLOGG 38 33 34 27 32 23 / 100 70 60 40 40 40
MOSES LAKE 39 33 37 25 33 20 / 90 20 20 20 20 20
WENATCHEE 34 29 32 25 32 19 / 90 60 50 20 20 20
OMAK 34 28 32 24 32 15 / 100 70 60 20 20 20
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
ID...HEAVY SNOW WARNING UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET FOR
NORTHERN PANHANDLE.
WIND ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR LEWIS AND
SOUTHERN NEZ PERCE COUNTIES.
WA...HEAVY SNOW WARNING UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET FOR
NORTHEAST MOUNTAINS.
WINTER WEATHER ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR MOSES
LAKE AREA...WATERVILLE PLATEAU...WENATCHEE AREA.
HEAVY SNOW WARNING UNTIL 4 AM PST SATURDAY ABOVE 3000 FEET FOR
OKANOGAN HIGHLANDS.
SNOW ADVISORY UNTIL 4 AM PST SATURDAY FOR EAST SLOPES NORTHERN
CASCADES.
SNOW ADVISORY UNTIL 4 PM PST THIS AFTERNOON FOR OKANOGAN VALLEY.
&&Hazardous weather outlook, Jan 3, 6:14 AM PST, 21 hours 28 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 614 AM PST THU JAN 3 2008 IDZ001>004-026-027-WAZ031>038-041>044-041415- NORTHERN PANHANDLE-COEUR DALENE AREA-IDAHO PALOUSE- CENTRAL PANHANDLE MOUNTAINS-LEWISTON AREA- LEWIS AND SOUTHERN NEZ PERCE COUNTIES-NORTHEAST BLUE MOUNTAINS- LOWER GARFIELD AND ASOTIN COUNTIES-WASHINGTON PALOUSE- MOSES LAKE AREA-UPPER COLUMBIA BASIN-SPOKANE AREA- NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS-WENATCHEE AREA- EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY-WATERVILLE PLATEAU- 614 AM PST THU JAN 3 2008 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... NORTH CENTRAL IDAHO...CENTRAL WASHINGTON...EAST CENTRAL WASHINGTON...NORTH CENTRAL WASHINGTON...NORTHEAST WASHINGTON AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT SNOW WILL TRACK ACROSS PORTIONS OF NORTHERN AND CENTRAL WASHINGTON AND THE IDAHO PANHANDLE THROUGH TONIGHT. LIGHT TO MODERATE ACCUMULATIONS ARE POSSIBLE ACROSS THE NORTHERN PANHANDLE THROUGH OKANOGAN HIGHLANDS...AND SOUTHWEST ACROSS THE WATERVILLE PLATEAU. LIGHTER ACCUMULATIONS ARE EXPECTED ELSEWHERE. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A WEAK FRONT WILL REMAIN STALLED OVER THE REGION TODAY...FOLLOWED BY A WETTER AND MILDER WEATHER SYSTEM FOR TONIGHT AND AGAIN LATER FRIDAY. SOME MODERATE SNOWS ARE POSSIBLE IN THE CASCADES. A RISK FOR MODERATE SNOWS ALSO LAYS OVER NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE...HOWEVER SNOW LEVELS WILL BE ON THE RISE HERE THROUGH FRIDAY AND REDUCE THE RISK FOR SIGNIFICANT SNOW IN THE MORE POPULATED VALLEY AREAS. A CHANCE OF SLEET OR FREEZING RAIN ALSO EXISTS AROUND THE WATERVILLE PLATEAU TO WENATCHEE AREA LATE THURSDAY TO FRIDAY MORNING.
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 4, 3:42 AM PST | Heavy Snow Warning | OTX | Ferry, Okanogan, Pend Oreille, Spokane, Stevens | 18 hr |
Nearby
Snow Advisories in Washington, 2008Every snow advisory in 2008
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.