Alert archive / Washington / Winter Storm Warnings in 2011
Winter Storm Warning 17, NWS Spokane, WA
NWS Spokane, WA issued this winter storm warning at Nov 20, 2011, 2:20 PM PST for Bonner County, Boundary County, Kootenai County, Idaho; 5 counties in Washington. It took effect at Nov 21, 2011, 6:00 AM PST. It was in force for 30 hr. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Nov 20, 2011, 2:20 PM PST (22:20 UTC)
- In effect from
- Nov 21, 2011, 6:00 AM PST
- Expired
- Nov 22, 2011, 12:00 PM PST
- In force
- 30 hr
- Issued by
- NWS Spokane, WA
Counties Bonner County, ID, Boundary County, ID, Kootenai County, ID, Ferry County, WA, Okanogan County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA
The radar
The Spokane radar (KOTX), 68 km from the middle of the area, began a volume at 22:19 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 21, 1:31 PM PST | HEAVY SNOW 4 | 3 Nw Naples, ID | SINCE THIS MORNING |
| Nov 21, 1:31 PM PST | HEAVY SNOW 7 | S Sandpoint, ID | SINCE THIS MORNING |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 10.3 hours before the alert went out and 109 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
- 584 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 231 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
466 WWUS46 KOTX 202220 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 220 PM PST SUN NOV 20 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO MONDAY THROUGH TUESDAY MORNING... .A FAST MOVING WEATHER SYSTEM ON MONDAY WILL BE IMMEDIATELY FOLLOWED BY A SECOND AND MUCH WETTER STORM MONDAY NIGHT AND TUESDAY. THIS WILL RESULT IN HEAVY SNOW ACCUMULATIONS IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. IN THE VALLEYS...3 TO 10 INCHES OF SNOW WILL ACCUMULATE IN THE NORTHERN VALLEYS BEFORE CHANGING TO RAIN TUESDAY. IDZ001-WAZ037-038-210630- /O.UPG.KOTX.WS.A.0012.111121T1400Z-111122T2000Z/ /O.NEW.KOTX.WS.W.0017.111121T1400Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...SANDPOINT...BONNERS FERRY... PRIEST RIVER...EASTPORT...SCHWEITZER MOUNTAIN ROAD...COLVILLE... CHEWELAH...NEWPORT...KETTLE FALLS...ORIN-RICE ROAD... FLOWERY TRAIL ROAD...REPUBLIC...INCHELIUM...WAUCONDA... CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD... SHERMAN PASS 220 PM PST SUN NOV 20 2011 ...WINTER STORM WARNING IN EFFECT FROM 6 AM MONDAY TO NOON PST TUESDAY... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A WINTER STORM WARNING FOR HEAVY SNOW...WHICH IS IN EFFECT FROM 6 AM MONDAY TO NOON PST TUESDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. * SNOW ACCUMULATIONS: 12 TO 18 INCHES MOUNTAINS AND 6 TO 10 INCHES VALLEYS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY INTO TUESDAY MORNING. HOWEVER BY THIS TIME VALLEY AREAS WILL BE CHANGING OVER TO RAIN BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: REPUBLIC...INCHELIUM...WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD... SHERMAN PASS...SANDPOINT...BONNERS FERRY... PRIEST RIVER... EASTPORT... SCHWEITZER MOUNTAIN ROAD... COLVILLE...CHEWELAH... NEWPORT...KETTLE FALLS... ORIN- RICE ROAD...FLOWERY TRAIL ROAD. * WINDS: VALLEY WINDS SOUTH 5 TO 10 MPH. MOUNTAIN WINDS SOUTH 15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS...ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT MONDAY AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH CONSIDERABLE DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. SNOW ACCUMULATIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ WAZ042-210630- /O.NEW.KOTX.WW.Y.0028.111121T1400Z-111122T1500Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY...BLEWETT PASS... LOUP LOUP PASS 220 PM PST SUN NOV 20 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 5 TO 9 INCHES VALLEYS AND 12 TO 20 INCHES IN THE MOUNTAINS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY INTO TUESDAY MORNING. VALLEY AREAS WILL START TO CHANGE OVER TO RAIN TUESDAY MORNING BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...BLEWETT PASS...LOUP LOUP PASS. * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH 15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS...ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT MONDAY AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WAZ043-210630- /O.NEW.KOTX.WW.Y.0028.111121T1400Z-111122T1500Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM...DISAUTEL PASS 220 PM PST SUN NOV 20 2011 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A WINTER WEATHER ADVISORY FOR SNOW...WHICH IS IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 3 TO 6 INCHES. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY BEFORE CHANGING OVER TO RAIN TUESDAY MORNING. * LOCATIONS INCLUDE: OMAK...OKANOGAN...BREWSTER...BRIDGEPORT... OROVILLE...NESPELEM...DISAUTEL PASS. * WINDS: SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
6 follow-up statements
902 WWUS46 KOTX 210533 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 933 PM PST SUN NOV 20 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO MONDAY THROUGH TUESDAY MORNING... .A FAST MOVING WEATHER SYSTEM ON MONDAY WILL BE IMMEDIATELY FOLLOWED BY A SECOND AND MUCH WETTER STORM MONDAY NIGHT AND TUESDAY. THIS WILL RESULT IN HEAVY SNOW ACCUMULATIONS IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. IN THE VALLEYS...3 TO 10 INCHES OF SNOW WILL ACCUMULATE IN THE NORTHERN VALLEYS BEFORE CHANGING TO RAIN TUESDAY. IDZ001-WAZ037-038-211400- /O.CON.KOTX.WS.W.0017.111121T1400Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...SANDPOINT...BONNERS FERRY... PRIEST RIVER...EASTPORT...SCHWEITZER MOUNTAIN ROAD...COLVILLE... CHEWELAH...NEWPORT...KETTLE FALLS...ORIN-RICE ROAD... FLOWERY TRAIL ROAD...REPUBLIC...INCHELIUM...WAUCONDA... CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD... SHERMAN PASS 933 PM PST SUN NOV 20 2011 ...WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM MONDAY TO NOON PST TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT FROM 6 AM MONDAY TO NOON PST TUESDAY. * SNOW ACCUMULATIONS: 12 TO 18 INCHES MOUNTAINS AND 6 TO10 INCHES VALLEYS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY INTO TUESDAY MORNING. HOWEVER BY THIS TIME VALLEY AREAS WILL BE CHANGING OVER TO RAIN BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: REPUBLIC...INCHELIUM...WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD... SHERMAN PASS...SANDPOINT...BONNERS FERRY... PRIEST RIVER... EASTPORT... SCHWEITZER MOUNTAIN ROAD... COLVILLE... CHEWELAH... NEWPORT...KETTLE FALLS... ORIN- RICE ROAD... FLOWERY TRAIL ROAD. * WINDS: VALLEY WINDS SOUTH 5 TO 10 MPH. MOUNTAIN WINDS SOUTH 15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT MONDAY AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH CONSIDERABLE DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. SNOW ACCUMULATIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ WAZ042-211400- /O.CON.KOTX.WW.Y.0028.111121T1400Z-111122T1500Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY...BLEWETT PASS... LOUP LOUP PASS 933 PM PST SUN NOV 20 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 5 TO 9 INCHES VALLEYS AND 12 TO 20 INCHES IN THE MOUNTAINS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY INTO TUESDAY MORNING. VALLEY AREAS WILL START TO CHANGE OVER TO RAIN TUESDAY MORNING BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...BLEWETT PASS...LOUP LOUP PASS. * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT MONDAY AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WAZ043-211400- /O.CON.KOTX.WW.Y.0028.111121T1400Z-111122T1500Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM...DISAUTEL PASS 933 PM PST SUN NOV 20 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 6 AM MONDAY TO 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 3 TO 6 INCHES. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY BEFORE CHANGING OVER TO RAIN TUESDAY MORNING. * LOCATIONS INCLUDE: OMAK...OKANOGAN...BREWSTER...BRIDGEPORT... OROVILLE...NESPELEM...DISAUTEL PASS. * WINDS: SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
227 WWUS46 KOTX 211359 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 559 AM PST MON NOV 21 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO TODAY AND TONIGHT.THROUGH TUESDAY MORNING... .A FAST MOVING WEATHER SYSTEM ON MONDAY WILL BE IMMEDIATELY FOLLOWED BY A SECOND AND MUCH WETTER STORM TONIGHT AND TUESDAY. THIS WILL RESULT IN HEAVY SNOW ACCUMULATIONS IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. IN THE VALLEYS...3 TO 10 INCHES OF SNOW WILL ACCUMULATE IN THE NORTHERN VALLEYS BEFORE CHANGING TO RAIN TUESDAY. IDZ001-WAZ037-038-212200- /O.CON.KOTX.WS.W.0017.111121T1400Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...SANDPOINT...BONNERS FERRY... PRIEST RIVER...EASTPORT...SCHWEITZER MOUNTAIN ROAD...COLVILLE... CHEWELAH...NEWPORT...KETTLE FALLS...ORIN-RICE ROAD... FLOWERY TRAIL ROAD...REPUBLIC...INCHELIUM...WAUCONDA... CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD... SHERMAN PASS 559 AM PST MON NOV 21 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TUESDAY. * SNOW ACCUMULATIONS: 12 TO 18 INCHES MOUNTAINS. 6 TO 10 INCHES CAN BE EXPECTED IN THE VALLEYS...WITH THE HEAVIEST AMOUNTS NORTH OF A LINE FROM COLVILLE TO SANDPOINT. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL INCREASE THROUGH TUESDAY...WITH THE HEAVIEST SNOW EXPECTED TONIGHT. THE VALLEYS BELOW AROUND 3500 FEET WILL BE CHANGING OVER TO RAIN TONIGHT BUT TRAVEL OVER MOUNTAIN PASSES WILL REMAIN EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: REPUBLIC...INCHELIUM...WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD... SHERMAN PASS...SANDPOINT...BONNERS FERRY... PRIEST RIVER... EASTPORT... SCHWEITZER MOUNTAIN ROAD... COLVILLE... CHEWELAH... NEWPORT...KETTLE FALLS... ORIN- RICE ROAD... FLOWERY TRAIL ROAD. * WINDS: VALLEY WINDS SOUTH 5 TO 10 MPH. MOUNTAIN WINDS SOUTH 15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH CONSIDERABLE DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. SNOW ACCUMULATIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ WAZ042-212200- /O.CON.KOTX.WW.Y.0028.111121T1400Z-111122T1500Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY...BLEWETT PASS... LOUP LOUP PASS 559 AM PST MON NOV 21 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 5 TO 9 INCHES VALLEYS AND 12 TO 20 INCHES IN THE MOUNTAINS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL INCREASE THIS MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED TONIGHT INTO TUESDAY MORNING. VALLEY AREAS WILL START TO CHANGE OVER TO RAIN TUESDAY MORNING BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...BLEWETT PASS...LOUP LOUP PASS. * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT TONIGHT AND TUESDAY AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WAZ043-212200- /O.CON.KOTX.WW.Y.0028.111121T1400Z-111122T1500Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM...DISAUTEL PASS 559 AM PST MON NOV 21 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 3 TO 6 INCHES. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DEVELOP MONDAY MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT MONDAY BEFORE CHANGING OVER TO RAIN TUESDAY MORNING. * LOCATIONS INCLUDE: OMAK...OKANOGAN...BREWSTER...BRIDGEPORT... OROVILLE...NESPELEM...DISAUTEL PASS. * WINDS: SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 30 MPH. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
260 WWUS46 KOTX 211926 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 1126 AM PST MON NOV 21 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO TODAY AND TONIGHT.THROUGH TUESDAY MORNING... .A FAST MOVING WEATHER SYSTEM WILL BE IMMEDIATELY FOLLOWED BY A SECOND AND MUCH WETTER STORM TONIGHT AND TUESDAY. THIS WILL RESULT IN HEAVY SNOW ACCUMULATIONS IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. IN THE VALLEYS...3 TO 10 INCHES OF SNOW WILL ACCUMULATE IN THE NORTHERN VALLEYS BEFORE CHANGING TO RAIN TUESDAY. IDZ001-WAZ037-038-220400- /O.CON.KOTX.WS.W.0017.000000T0000Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...SANDPOINT...BONNERS FERRY... PRIEST RIVER...EASTPORT...SCHWEITZER MOUNTAIN ROAD...COLVILLE... CHEWELAH...NEWPORT...KETTLE FALLS...ORIN-RICE ROAD... FLOWERY TRAIL ROAD...REPUBLIC...INCHELIUM...WAUCONDA... CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD... SHERMAN PASS 1126 AM PST MON NOV 21 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TUESDAY. * SNOW ACCUMULATIONS: 12 TO 18 INCHES MOUNTAINS. 6 TO 10 INCHES CAN BE EXPECTED IN THE VALLEYS...WITH THE HEAVIEST AMOUNTS NORTH OF A LINE FROM COLVILLE TO SANDPOINT. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL INCREASE THROUGH TUESDAY...WITH THE HEAVIEST SNOW EXPECTED TONIGHT. THE VALLEYS BELOW 3500 FEET WILL BE CHANGING OVER TO RAIN TONIGHT BUT TRAVEL OVER MOUNTAIN PASSES WILL REMAIN EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: REPUBLIC...INCHELIUM...WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD... SHERMAN PASS...SANDPOINT...BONNERS FERRY... PRIEST RIVER... EASTPORT... SCHWEITZER MOUNTAIN ROAD... COLVILLE... CHEWELAH... NEWPORT...KETTLE FALLS... ORIN- RICE ROAD... FLOWERY TRAIL ROAD. * WINDS: VALLEY WINDS SOUTH 5 TO 10 MPH. MOUNTAIN WINDS SOUTH 20 TO 30 MPH WITH GUSTS TO 50 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH CONSIDERABLE DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. SNOW ACCUMULATIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ WAZ042-220400- /O.CON.KOTX.WW.Y.0028.000000T0000Z-111122T1500Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY...BLEWETT PASS... LOUP LOUP PASS 1126 AM PST MON NOV 21 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 5 TO 9 INCHES VALLEYS AND 12 TO 20 INCHES IN THE MOUNTAINS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL INCREASE THIS MORNING AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED TONIGHT INTO TUESDAY MORNING. VALLEY AREAS WILL START TO CHANGE OVER TO RAIN TUESDAY MORNING BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...BLEWETT PASS...LOUP LOUP PASS. * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT TONIGHT AND TUESDAY AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WAZ043-220400- /O.CON.KOTX.WW.Y.0028.000000T0000Z-111122T1500Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM...DISAUTEL PASS 1126 AM PST MON NOV 21 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 3 TO 6 INCHES. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL DIMINISH THIS AFTERNOON BUT INCREASE TONIGHT AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT TONIGHT BEFORE CHANGING OVER TO RAIN TUESDAY MORNING. * LOCATIONS INCLUDE: OMAK...OKANOGAN...BREWSTER...BRIDGEPORT... OROVILLE...NESPELEM...DISAUTEL PASS. * WINDS: SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 35 MPH. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
319 WWUS46 KOTX 220356 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 756 PM PST MON NOV 21 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO THROUGH TUESDAY MORNING... .A FAST MOVING WEATHER SYSTEM WILL BE IMMEDIATELY FOLLOWED BY A SECOND AND MUCH WETTER STORM TONIGHT AND TUESDAY. THIS WILL RESULT IN HEAVY SNOW ACCUMULATIONS IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. IN THE VALLEYS...3 TO 10 INCHES OF SNOW WILL ACCUMULATE IN THE NORTHERN VALLEYS BEFORE CHANGING TO RAIN TUESDAY. IDZ001-WAZ037-038-221500- /O.CON.KOTX.WS.W.0017.000000T0000Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...SANDPOINT...BONNERS FERRY... PRIEST RIVER...EASTPORT...SCHWEITZER MOUNTAIN ROAD...COLVILLE... CHEWELAH...NEWPORT...KETTLE FALLS...ORIN-RICE ROAD... FLOWERY TRAIL ROAD...REPUBLIC...INCHELIUM...WAUCONDA... CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD... SHERMAN PASS 756 PM PST MON NOV 21 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TUESDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TUESDAY. * SNOW ACCUMULATIONS: IN THE VALLEYS BELOW 2500 FEET 2 TO 4 INCHES...BELOW 3000 FEET 4 TO 8 VALLEYS WITH LOCAL AMOUNTS TO 10 NEAR THE CANADIAN BORDER. 12 TO 18 INCHES MOUNTAINS. HEAVIEST AMOUNTS NORTH OF A LINE FROM COLVILLE TO SANDPOINT. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL CONTINUE THROUGH TUESDAY...WITH THE HEAVIEST SNOW EXPECTED TONIGHT. THE VALLEYS BELOW 3500 FEET WILL BE CHANGING OVER TO RAIN TONIGHT BUT TRAVEL OVER MOUNTAIN PASSES WILL REMAIN EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: REPUBLIC...INCHELIUM...WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD... SHERMAN PASS...SANDPOINT...BONNERS FERRY... PRIEST RIVER... EASTPORT... SCHWEITZER MOUNTAIN ROAD... COLVILLE... CHEWELAH... NEWPORT...KETTLE FALLS... ORIN- RICE ROAD... FLOWERY TRAIL ROAD. * WINDS: VALLEY WINDS SOUTH 5 TO 10 MPH. MOUNTAIN WINDS SOUTH 20 TO 30 MPH WITH GUSTS TO 50 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT OVERNIGHT AND TUESDAY MORNING AS VERY HEAVY SNOW FALLS ALONG WITH CONSIDERABLE DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. SNOW ACCUMULATIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ WAZ042-221500- /O.CON.KOTX.WW.Y.0028.000000T0000Z-111122T1500Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY...BLEWETT PASS... LOUP LOUP PASS 756 PM PST MON NOV 21 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 5 TO 9 INCHES VALLEYS AND 12 TO 20 INCHES IN THE MOUNTAINS. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL INCREASE TONIGHT AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED TONIGHT INTO TUESDAY MORNING. VALLEY AREAS WILL START TO CHANGE OVER TO RAIN TUESDAY MORNING BUT TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...BLEWETT PASS...LOUP LOUP PASS. * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY AND THEN BECOME SLUSHY IN THE VALLEYS BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT TONIGHT AND TUESDAY AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$ WAZ043-221500- /O.CON.KOTX.WW.Y.0028.000000T0000Z-111122T1500Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM...DISAUTEL PASS 756 PM PST MON NOV 21 2011 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY... A WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM PST TUESDAY. * SNOW ACCUMULATIONS: 2 TO 4 INCHES BELOW 1500 FEET...3 TO 6 INCHES ELSEWHERE. * ELEVATION: ALL AREAS. * TIMING: SNOW WILL INCREASE AGAIN TONIGHT AND CONTINUE INTO TUESDAY. THE HEAVIEST SNOW IS EXPECTED OVERNIGHT TONIGHT BEFORE CHANGING OVER TO RAIN TUESDAY MORNING. * LOCATIONS INCLUDE: OMAK...OKANOGAN...BREWSTER...BRIDGEPORT... OROVILLE...NESPELEM...DISAUTEL PASS. * WINDS: SOUTH WINDS 10 TO 20 MPH WITH GUSTS TO 35 MPH. * IMPACTS: ROADWAYS WILL BE SNOW COVERED ON MONDAY AND THEN BECOME SLUSHY BY TUESDAY MORNING AS TEMPERATURES WARM ABOVE FREEZING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
299 WWUS46 KOTX 221452 AAA WSWOTX URGENT - WINTER WEATHER MESSAGE...UPDATED NATIONAL WEATHER SERVICE SPOKANE WA 652 AM PST TUE NOV 22 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO THROUGH TUESDAY MORNING... .HEAVY SNOW ACCUMULATIONS WILL CONTINUE THIS MORNING IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. WAZ043-221600- /O.CAN.KOTX.WW.Y.0028.000000T0000Z-111122T1500Z/ OKANOGAN VALLEY- INCLUDING THE FOLLOWING LOCATIONS...OMAK...OKANOGAN...BREWSTER... BRIDGEPORT...OROVILLE...NESPELEM...DISAUTEL PASS 652 AM PST TUE NOV 22 2011 ...WINTER WEATHER ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN SPOKANE HAS CANCELLED THE WINTER WEATHER ADVISORY. MOST TOWNS BELOW 3000 FEET HAVE SEEN THE SNOW CHANGE TO RAIN OVERNIGHT. WIDESPREAD HEAVY SNOW ACCUMULATIONS ARE NO LONGER EXPECTED. RAIN WILL CONTINUE THE REST OF THE DAY HOWEVER. $$ IDZ001-WAZ037-038-222000- /O.CON.KOTX.WS.W.0017.000000T0000Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...EASTPORT... SCHWEITZER MOUNTAIN ROAD...ORIN-RICE ROAD...FLOWERY TRAIL ROAD... WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD...SHERMAN PASS 652 AM PST TUE NOV 22 2011 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TODAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON PST TODAY. * SNOW ACCUMULATIONS: MOST VALLEY TOWNS BELOW 3000 FEET HAVE TURNED TO RAIN OVERNIGHT...AND WILL CONTINUE TO KEEP STEADY OR SLOWLY WARMING TEMPERATURE. HEAVY SNOW ACCUMULATIONS OF NO LONGER EXPECTED THEREFORE. IN THE MOUNTAINS HEAVY SNOW WILL LAST INTO LATE MORNING BEFORE TAPER OFF TO SHOWERS. 12 TO 18 INCHES WILL BE COMMON ABOVE 3000 FEET. * ELEVATION: ABOVE 3000 FEET. * TIMING: SNOW WILL CONTINUE IN THE MOUNTAINS THIS MORNING. MOST VALLEYS HAVE CHANGED OVER TO RAIN BELOW 3000 FEET. TRAVEL OVER MOUNTAIN PASSES WILL REMAIN EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT...BOULDER CREEK ROAD... SHERMAN PASS... EASTPORT...SCHWEITZER MOUNTAIN ROAD... ORIN-RICE ROAD... FLOWERY TRAIL ROAD * WINDS: VALLEY WINDS SOUTH 15 TO 25 MPH. MOUNTAIN WINDS SOUTH 20 TO 30 MPH WITH GUSTS UP TO 60 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: VALLEY ROADWAYS WILL BE SLUSHY THIS MORNING AS TEMPERATURES HAVE WARMED ABOVE FREEZING. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT TODAY AS HEAVY SNOW FALLS ALONG WITH CONSIDERABLE DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER STORM WARNING FOR HEAVY SNOW MEANS SIGNIFICANT AMOUNTS OF SNOW ARE EXPECTED OR OCCURRING. SNOW ACCUMULATIONS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. && $$ WAZ042-222000- /O.EXT.KOTX.WW.Y.0028.000000T0000Z-111122T2000Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...LEAVENWORTH...MAZAMA... TWISP...WINTHROP...STEHEKIN...CONCONULLY...BLEWETT PASS... LOUP LOUP PASS 652 AM PST TUE NOV 22 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL NOON PST TODAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL NOON PST TODAY. * SNOW ACCUMULATIONS: 5 TO 9 INCHES VALLEYS AND 12 TO 20 INCHES IN THE MOUNTAINS. * ELEVATION: ALL ELEVATIONS. THE HEAVIEST SNOWS WILL FALL CLOSER TO THE CASCADE CREST SUCH AS MAZAMA AND STEHEKIN...WHERE LOCALIZED AMOUNTS OF 10 TO 15 INCHES WILL BE POSSIBLE. 1 * TIMING: SNOW WILL DECREASE TODAY. VALLEY AREAS WILL START TO CHANGE OVER TO RAIN OR BRIEF POCKETS OF FREEZING RAIN TODAY. TRAVEL OVER MOUNTAIN PASSES WILL BE EXTREMELY DIFFICULT. * LOCATIONS INCLUDE: LEAVENWORTH...MAZAMA...TWISP...WINTHROP... STEHEKIN...CONCONULLY...BLEWETT PASS...LOUP LOUP PASS * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT TODAY AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
535 WWUS46 KOTX 221950 WSWOTX URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE SPOKANE WA 1150 AM PST TUE NOV 22 2011 ...HEAVY SNOW FOR NORTHERN WASHINGTON AND FAR NORTH IDAHO THROUGH TUESDAY MORNING... .HEAVY SNOW ACCUMULATIONS WILL CONTINUE THIS MORNING IN THE CASCADES AND FOR THE MOUNTAINS OF NORTHERN WASHINGTON AND THE NORTHERN PANHANDLE OF IDAHO. IDZ001-WAZ037-038-222100- /O.EXP.KOTX.WS.W.0017.000000T0000Z-111122T2000Z/ NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- INCLUDING THE FOLLOWING LOCATIONS...EASTPORT... SCHWEITZER MOUNTAIN ROAD...ORIN-RICE ROAD...FLOWERY TRAIL ROAD... WAUCONDA...CHESAW ROAD...HIGHWAY 20 WAUCONDA SUMMIT... BOULDER CREEK ROAD...SHERMAN PASS 1150 AM PST TUE NOV 22 2011 ...WINTER STORM WARNING WILL EXPIRE AT NOON PST TODAY... THE WINTER STORM WARNING WILL EXPIRE AT NOON PST TODAY. TEMPERATURES HAVE WARMED IN THE VALLEYS WITH SNOW CHANGING TO RAIN. LIGHT SNOW WILL CONTINUE IN THE MOUNTAINS ABOVE 4500 FEET IN ELEVATION. $$ WAZ042-230400- /O.EXT.KOTX.WW.Y.0028.000000T0000Z-111123T1800Z/ EAST SLOPES NORTHERN CASCADES- INCLUDING THE FOLLOWING LOCATIONS...MAZAMA...TWISP...WINTHROP... CONCONULLY 1150 AM PST TUE NOV 22 2011 ...WINTER WEATHER ADVISORY NOW IN EFFECT UNTIL 10 AM PST WEDNESDAY... THE WINTER WEATHER ADVISORY IS NOW IN EFFECT UNTIL 10 AM PST WEDNESDAY. SNOW HAS CHANGED TO RAIN IN THE VALLEYS OF CHELAN COUNTY. SNOW WILL CONTINUE TO ACCUMULATE IN THE METHOW VALLEY. * SNOW ACCUMULATIONS: AN ADDITIONAL 2 TO 5 INCHES IN VALLEYS NORTH OF LAKE CHELAN. AN ADDITIONAL 5 TO 8 INCHES IN THE MOUNTAINS. * ELEVATION: ALL AREAS. * TIMING: SNOW HAS ENDED IN THE VALLEYS SOUTH OF LAKE CHELAN. SNOW WILL CONTINUE IN THE METHOW VALLEY TODAY THROUGH WEDNESDAY MORNING. * LOCATIONS INCLUDE: MAZAMA...TWISP...WINTHROP. * WINDS: VALLEY WINDS SOUTHEAST 5 TO 10 MPH. MOUNTAIN WINDS SOUTH15 TO 25 MPH WITH GUSTS TO 45 MPH ESPECIALLY ON RIDGE TOPS. * IMPACTS: ROADWAYS WILL BE SNOW COVERED TODAY. IN THE MOUNTAINS... ROADWAYS WILL REMAIN SNOW COVERED WITH TRAVEL ESPECIALLY DIFFICULT TODAY AS VERY HEAVY SNOW FALLS ALONG WITH DRIFTING AND BLOWING SNOW. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WINTER WEATHER ADVISORY FOR SNOW MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. && $$
What forecasters said that day
The local office's own words before this winter storm warning 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 winter storm warning went out at Nov 20, 1:20 PM PST, 1 hour earlier.
Area forecast discussion, Nov 20, 1:20 PM PST, 1 hour before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
120 PM PST Sun Nov 20 2011
.SYNOPSIS...
Today will be cold...but a quiet weather day. The next round of
precipitation will arrive on Monday. The arrival of warmer air
with Monday's system will bring a change from snow to rain over
the Columbia Basin into the Palouse. Moist and active weather will
continue through the Thanksgiving holiday with the mountains
receiving lots of snow.
&&
.DISCUSSION...
The forecast for this afternoon has been updated to increase cloud
cover over the majority of the Spokane forecast area. Visible
satellite imagery has shown virtually no decrease in the cloud cover
over the lowlands. As of 1PM, stratus actually appeared to be
expanding over the West Plains and over the Palouse. With only 3 or
4 hours of sun left in the day, it is unlikely that much clearing
will occur. /GKoch
&&
.AVIATION...
18z TAFS: As of 21z, a stubborn stratus deck remained over most of
the Inland Northwest. Low level moisture is obviously deeper than
the NAM suggests. With little low level mixing expected for the
remainder of the day, low clouds are expected to remain in the
Spokane, Wenatchee and Pullman areas through sunset and quite
possibly through the night. Precipitation with the next moist
frontal system is expected to arrive around 15z in the form of light
snow over most airports in the region. /GKoch
&&
.PRELIMINARY POINT TEMPS/POPS...
Spokane 28 21 36 33 46 38 / 10 0 70 90 80 70
Coeur d'Alene 27 18 37 33 43 36 / 10 10 80 80 90 90
Pullman 32 21 40 34 46 39 / 10 0 60 70 50 60
Lewiston 37 26 45 38 55 42 / 0 0 30 50 20 20
Colville 28 19 34 32 43 38 / 0 20 90 90 100 90
Sandpoint 26 18 33 32 42 37 / 10 10 100 80 100 100
Kellogg 27 18 40 32 39 36 / 10 10 80 70 90 70
Moses Lake 32 22 38 36 53 40 / 0 0 40 50 50 50
Wenatchee 30 25 35 33 46 37 / 0 10 60 50 50 60
Omak 25 19 33 29 45 35 / 0 20 80 70 60 50
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Storm Watch from Monday morning through Tuesday morning
for Northern Panhandle.
WA...Winter Storm Watch from Monday morning through Tuesday morning
for Northeast Mountains-Okanogan Highlands.
&&Hazardous weather outlook, Nov 20, 6:16 AM PST, 8 hours 4 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SPOKANE WA 616 AM PST SUN NOV 20 2011 IDZ001-WAZ037-038-211430- NORTHERN PANHANDLE-NORTHEAST MOUNTAINS-OKANOGAN HIGHLANDS- 616 AM PST SUN NOV 20 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... NORTH CENTRAL WASHINGTON AND NORTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A VERY WET AND SNOWY PATTERN WILL BEGIN MONDAY AND LAST INTO WEDNESDAY. ALL ELEVATIONS SHOULD SEE SNOW MONDAY BEFORE WARMING TEMPERATURES BEGIN TO CHANGE THE VALLEY SNOW TO RAIN MONDAY NIGHT. BY WEDNESDAY...ITS POSSIBLE THE MOUNTAINS MAY BE MEASURING SNOW AMOUNTS IN FEET. VERY GUSTY WINDS WILL BE LIKELY TUESDAY AND WEDNESDAY. WAZ041>044-211430- WENATCHEE AREA-EAST SLOPES NORTHERN CASCADES-OKANOGAN VALLEY- WATERVILLE PLATEAU- 616 AM PST SUN NOV 20 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL WASHINGTON AND NORTH CENTRAL WASHINGTON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY A VERY WET AND SNOWY PATTERN WILL BEGIN MONDAY AND LAST INTO TUESDAY NIGHT. ALL ELEVATIONS SHOULD SEE SNOW MONDAY BEFORE WARMING TEMPERATURES BEGIN TO CHANGE THE VALLEY SNOW TO RAIN TUESDAY. BY TUESDAY NIGHT...ITS POSSIBLE THE HIGHER ELEVATIONS OF THE EAST SLOPES OF THE CASCADES MAY BE MEASURING SNOW AMOUNTS IN FEET. IDZ002>004-026-027-WAZ031>036-211430- COEUR D'ALENE 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- 616 AM PST SUN NOV 20 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH IDAHO... NORTH CENTRAL IDAHO...EAST CENTRAL WASHINGTON...NORTHEAST WASHINGTON AND SOUTHEAST WASHINGTON. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY VERY GUSTY WINDS WILL BE POSSIBLE TUESDAY AND WEDNESDAY AND WILL ACCOMPANY AN EXTREMELY MOIST WEATHER PATTERN THAT MAY PRODUCE ONE TO THREE FEET OF SNOW IN THE MOUNTAINS OF NORTHEAST WASHINGTON...THE EAST SLOPES OF THE CASCADES AND NORTH IDAHO.
The office that day
Everything else NWS Spokane, WA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 20, 2:42 AM PST | Winter Storm Watch | OTX | Bonner, Boundary, Kootenai | 12 hr |
| Nov 20, 2:20 PM PST | Winter Weather Advisory | OTX | Douglas, Okanogan | 68 hr |
Nearby
Winter Storm Warnings in Washington, 2011Winter Storm Warnings in Idaho, 2011Every winter storm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.