Alert archive / Wyoming / Winter Storm Warnings in 2007
Winter Storm Warning 13, NWS Riverton, WY
NWS Riverton, WY issued this winter storm warning at Dec 29, 2007, 9:22 AM MST for 6 counties in Wyoming. It was in force for 35 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 29, 2007, 9:22 AM MST (16:22 UTC)
- Expired
- Dec 30, 2007, 8:11 PM MST
- In force
- 35 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Hot Springs County, WY, Lincoln County, WY, Park County, WY, Sublette County, WY, Teton County, WY
The radar
The Riverton/Lander radar (KRIW), 100 km from the middle of the area, began a volume at 16:26 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
Riverton, WY (KRIW), launched 12:00Z, 4.4 hours before the alert went out and 106 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
- 1699 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS45 KRIW 291622 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 922 AM MST SAT DEC 29 2007 ...WINTER STORM WARNING TODAY THROUGH SUNDAY FOR THE TETONS AND GROS VENTRE MOUNTAINS AND YELLOWSTONE NATIONAL PARK... ...WINTER STORM WATCH FOR WESTERN MOUNTAINS AND VALLEYS LATE THIS AFTERNOON THROUGH SUNDAY AFTERNOON... .SNOWFALL OF 3 TO 7 INCHES HAS ALREADY FALLEN IN THE TETON MOUNTAINS AND SOUTHERN YELLOWSTONE NATIONAL PARK. WINDS GUSTING TO 25 TO 35 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. A STRONG PACIFIC STORM WILL MOVE INTO WESTERN WYOMING TODAY BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL SPREAD EAST DURING THE AFTERNOON AND INTENSIFY IN THE EVENING. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. WYZ001-012-300000- /O.UPG.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ /O.NEW.KRIW.WS.W.0013.071229T1622Z-071231T0000Z/ YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 922 AM MST SAT DEC 29 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOWFALL OF 3 TO 7 INCHES HAS ALREADY FALLEN IN THE TETON MOUNTAINS AND SOUTHERN YELLOWSTONE NATIONAL PARK. WINDS GUSTING TO 25 TO 35 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. A STRONG PACIFIC STORM WILL CONTINUE TO INCREASE OVER WESTERN WYOMING TODAY BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL INTENSIFY THIS AFTERNOON AND WILL SPREAD EAST THROUGH THE EVENING. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ002-300000- /O.EXA.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ ABSAROKA MOUNTAINS- 922 AM MST SAT DEC 29 2007 ...WINTER STORM WATCH IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SUNDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WATCH...WHICH IS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SUNDAY AFTERNOON. A STRONG PACIFIC STORM WILL MOVE INTO WESTERN WYOMING TODAY BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL PICK UP THIS AFTERNOON AND WILL SPREAD EAST THROUGH THE EVENING. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. WIND GUSTS OVER 75 MPH ARE POSSIBLE. THE SNOW AND HIGH WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 6 INCHES IS EXPECTED IN THE VALLEYS WITH 8 TO 18 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR HAZARDOUS WINTER WEATHER IN AND CLOSE TO THE WATCH AREA. $$ WYZ013-023-024-027-300000- /O.CON.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ JACKSON HOLE-STAR VALLEY-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...JACKSON...AFTON...ALPINE...THAYNE... KEMMERER...COKEVILLE 922 AM MST SAT DEC 29 2007 ...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SUNDAY AFTERNOON... A WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SUNDAY AFTERNOON. A STRONG PACIFIC STORM WILL MOVE INTO WESTERN WYOMING TODAY BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL PICK UP THIS AFTERNOON AND WILL SPREAD EAST THROUGH THE EVENING. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR HAZARDOUS WINTER WEATHER IN AND CLOSE TO THE WATCH AREA. $$ WYZ014-015-025-300000- /O.CON.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER GREEN RIVER BASIN FOOTHILLS- INCLUDING THE CITY OF...PINEDALE 922 AM MST SAT DEC 29 2007 ...WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SUNDAY AFTERNOON... A WINTER STORM WATCH REMAINS IN EFFECT FROM 5 PM MST THIS AFTERNOON THROUGH SUNDAY AFTERNOON. A STRONG PACIFIC STORM WILL MOVE INTO WESTERN WYOMING TODAY BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL PICK UP IN THE FAR WEST AROUND 3 PM MST SATURDAY SPREADING EAST THROUGH THE EVENING. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED IN THE VALLEYS WITH 10 TO 20 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR HAZARDOUS WINTER WEATHER IN AND CLOSE TO THE WATCH AREA. $$ C.BAKER
5 follow-up statements
000 WWUS45 KRIW 292118 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 218 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING THROUGH SUNDAY FOR THE WESTERN MOUNTAINS AND VALLEYS OF WYOMING... .SNOWFALL OF 3 TO 12 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON...LINCOLN AND SUBLETTE COUNTIES...WITH WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. WHITE OUT CONDITIONS WERE REPORTED ON TOP OF RENDEZVOUS PEAK AND TETON PASS. SIGNIFICANT BLOWING AND DRIFTING SNOW WAS OBSERVED OVER SOUTH PASS. A STRONG PACIFIC STORM WILL CONTINUE TO INTENSIFY OVER WESTERN WYOMING BRINGING PERIODS OF HEAVY SNOW AND STRONG WINDS CAUSING SIGNIFICANT BLOWING AND DRIFTING SNOW. THE SNOW AND WIND WILL INTENSIFY IN THE EVENING. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY... TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. WYZ013-023-024-027-301000- /O.UPG.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ /O.EXB.KRIW.WS.W.0013.071229T2200Z-071231T0000Z/ JACKSON HOLE-STAR VALLEY-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...JACKSON...AFTON...ALPINE...THAYNE... KEMMERER...COKEVILLE 218 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOWFALL OF 3 TO 12 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON...LINCOLN AND SUBLETTE COUNTIES...WITH WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. WHITE OUT CONDITIONS WERE REPORTED ON TOP OF RENDEZVOUS PEAK AND TETON PASS. A STRONG PACIFIC STORM WILL CONTINUE TO INTENSIFY OVER WESTERN WYOMING BRINGING PERIODS OF HEAVY SNOW AND STRONG WINDS CAUSING SIGNIFICANT BLOWING AND DRIFTING SNOW. THE SNOW AND WIND WILL INTENSIFY IN THE EVENING. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY... TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ014-015-025-301000- /O.UPG.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ /O.EXB.KRIW.WS.W.0013.071229T2200Z-071231T0000Z/ WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER GREEN RIVER BASIN FOOTHILLS- INCLUDING THE CITY OF...PINEDALE 218 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. SNOWFALL OF 2 TO 5 INCHES HAS ALREADY FALLEN OVER PARTS OF THE WIND RIVER MOUNTAINS. WINDS GUSTING FROM 35 TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. SIGNIFICANT BLOWING AND DRIFTING SNOW WAS OBSERVED OVER SOUTH PASS. A STRONG PACIFIC STORM WILL CONTINUE TO INTENSIFY OVER WESTERN WYOMING BRINGING PERIODS OF HEAVY SNOW AND STRONG WINDS CAUSING SIGNIFICANT BLOWING AND DRIFTING SNOW. THE SNOW AND WIND WILL INTENSIFY IN THE EVENING. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED IN THE VALLEYS WITH 10 TO 15 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ002-301000- /O.UPG.KRIW.WS.A.0010.071230T0000Z-071231T0000Z/ /O.EXB.KRIW.WS.W.0013.071229T2200Z-071231T0000Z/ ABSAROKA MOUNTAINS- 218 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST SUNDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST SUNDAY. THE WINTER STORM WATCH IS NO LONGER IN EFFECT. A STRONG PACIFIC STORM WILL MOVE INTO THE ABSAROKA MOUNTAINS THROUGH THE EVENING BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL INTENSIFY AND SPREAD EAST THROUGH THE EVENING. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. WIND GUSTS OVER 75 MPH ARE POSSIBLE. THE SNOW AND HIGH WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY... TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 6 INCHES IS EXPECTED IN THE VALLEYS WITH 8 TO 14 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ001-012-301000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 218 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. SNOWFALL OF 3 TO 12 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON COUNTY. WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. A STRONG PACIFIC STORM WILL CONTINUE TO INTENSIFY OVER WESTERN WYOMING BRINGING PERIODS OF HEAVY SNOW AND STRONG WINDS CAUSING SIGNIFICANT BLOWING AND DRIFTING SNOW. THE SNOW AND WIND WILL INTENSIFY IN THE EVENING. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY... TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED IN THE VALLEYS WITH 10 TO 20 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ C.BAKER
000 WWUS45 KRIW 300350 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING THROUGH SUNDAY FOR THE WESTERN MOUNTAINS AND VALLEYS OF WYOMING... .SNOWFALL OF 3 TO 12 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON... LINCOLN AND SUBLETTE COUNTIES...WITH WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. WHITE OUT CONDITIONS WERE REPORTED ON TOP OF RENDEZVOUS PEAK AND TETON PASS. SIGNIFICANT BLOWING AND DRIFTING SNOW WAS OBSERVED OVER SOUTH PASS. A STRONG PACIFIC STORM WILL CONTINUE TO INTENSIFY OVER WESTERN WYOMING BRINGING PERIODS OF HEAVY SNOW AND STRONG WINDS CAUSING SIGNIFICANT BLOWING AND DRIFTING SNOW. THE SNOW WILL INTENSIFY AGAIN AFTER MIDNIGHT. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY... TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. WYZ023-024-301100- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ STAR VALLEY-SALT RIVER AND WYOMING RANGES- INCLUDING THE CITIES OF...AFTON...ALPINE...THAYNE 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. SNOWFALL BETWEEN 2 AND 4 INCHES HAS BEEN REPORTED ACROSS STAR VALLEY SO FAR...WITH 4 TO 8 INCHES OVER THE SALT RIVER AND WYOMING MOUNTAINS. STRONG WESTERLY WINDS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW...ESPECIALLY IN THE MOUNTAINS. A SLIGHT BREAK IN THE SNOW IS EXPECTED THIS EVENING...WITH PERIODS OF MAINLY LIGHT SNOW EXPECTED. HOWEVER...SNOW IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AFTER MIDNIGHT...AS A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ014-015-025-301100- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER GREEN RIVER BASIN FOOTHILLS- INCLUDING THE CITY OF...PINEDALE 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. SNOWFALL OF 2 TO 5 INCHES HAS ALREADY FALLEN OVER PARTS OF THE WIND RIVER MOUNTAINS. WINDS GUSTING FROM 35 TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. SIGNIFICANT BLOWING AND DRIFTING SNOW WAS OBSERVED OVER SOUTH PASS. A SLIGHT BREAK IN THE SNOW IS EXPECTED FOR THE REMAINDER OF THIS EVENING...WITH PERIODS OF MAINLY LIGHT SNOW EXPECTED. HOWEVER...SNOW IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AFTER 2 AM...AS A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES...INCLUDING SOUTH AND TOGWOTEE PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED IN THE UPPER GREEN RIVER BASIN FOOTHILLS...WITH 12 TO 24 INCHES POSSIBLE OVER THE WESTERN WIND RIVER MOUNTAINS. THE EASTERN WIND RIVER MOUNTAINS ARE EXPECTED TO GET BETWEEN 6 AND 14 INCHES...WITH THE HIGHEST SNOWFALL AMOUNTS EXPECTED OVER TOGWOTEE PASS...WHERE BETWEEN 12 AND 18 INCHES COULD OCCUR. SOUTH PASS SHOULD RECEIVE BETWEEN 10 AND 15 INCHES. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ001-301100- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ YELLOWSTONE NATIONAL PARK- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. SNOWFALL OF 3 TO 12 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON COUNTY. WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. A SLIGHT BREAK IN THE SNOW IS EXPECTED FOR THE REMAINDER OF THIS EVENING...WITH PERIODS OF MAINLY LIGHT SNOW EXPECTED. HOWEVER...SNOW IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AFTER MIDNIGHT...AS A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 3 TO 7 INCHES IS EXPECTED NEAR MAMMOTH...WITH 12 TO 24 INCHES POSSIBLE ACROSS SOUTHWEST YELLOWSTONE. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ002-301100- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ ABSAROKA MOUNTAINS- 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. A STRONG PACIFIC STORM WILL MOVE INTO THE ABSAROKA MOUNTAINS TONIGHT...BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL INTENSIFY AND SPREAD EAST AFTER MIDNIGHT. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. WIND GUSTS OVER 75 MPH ARE POSSIBLE. THE SNOW AND HIGH WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 4 TO 6 INCHES IS EXPECTED IN THE VALLEYS WITH 8 TO 14 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ027-301100- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...KEMMERER...COKEVILLE 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. SNOWFALL BETWEEN 2 AND 3 INCHES HAS BEEN REPORTED SO FAR ACROSS THE LOWER ELEVATIONS OF SOUTHERN LINCOLN COUNTY...INCLUDING COKEVILLE AND KEMMERER. A SLIGHT BREAK IN THE SNOW IS EXPECTED FOR THE REMAINDER OF THIS EVENING...WITH PERIODS OF MAINLY LIGHT SNOW EXPECTED. HOWEVER...SNOW IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AFTER MIDNIGHT...AS A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF MODERATE AND HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL TOTALS OF 4 TO 8 INCHES IS EXPECTED ACROSS SOUTHERN LINCOLN COUNTY...WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ012-013-301100- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- INCLUDING THE CITY OF...JACKSON 850 PM MST SAT DEC 29 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST SUNDAY. SNOWFALL OF 2 TO 4 INCHES HAS ALREADY FALLEN OVER JACKSON VALLEY...WITH 5 TO 10 INCHES ACROSS THE TETON AND GROS VENTRE MOUNTAINS. ALSO...WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. WHITE OUT CONDITIONS WERE REPORTED ON TOP OF RENDEZVOUS PEAK AND TETON PASS. A SLIGHT BREAK IN THE SNOW IS EXPECTED FOR THE REMAINDER OF THIS EVENING...WITH PERIODS OF MAINLY LIGHT SNOW EXPECTED. HOWEVER...SNOW IS EXPECTED TO INCREASE IN COVERAGE AND INTENSITY AFTER MIDNIGHT...AS A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH SUNDAY...TAPERING OFF IN THE AFTERNOON. SNOWFALL OF 5 TO 10 INCHES IS EXPECTED ACROSS JACKSON HOLE...WITH HIGHEST AMOUNTS NEAR MOOSE AND MORAN. 12 TO 24 INCHES OF SNOW IS EXPECTED ACROSS THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ TEAM RIVERTON
000 WWUS45 KRIW 301007 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING THROUGH THIS AFTERNOON FOR THE WESTERN MOUNTAINS AND VALLEYS OF WYOMING... .A STRONG PACIFIC STORM WILL CONTINUE TO BRING PERIODS OF HEAVY SNOW AND STRONG WINDS TODAY. THIS COMBINATION WILL CONTINUE TO CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THE AFTERNOON HOURS TODAY BEFORE TAPERING OFF. TOTAL SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. WYZ023-024-310000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ STAR VALLEY-SALT RIVER AND WYOMING RANGES- INCLUDING THE CITIES OF...AFTON...ALPINE...THAYNE 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. SNOWFALL BETWEEN 1 AND 4 INCHES HAS BEEN REPORTED ACROSS STAR VALLEY SO FAR...WITH 4 TO 8 INCHES OVER THE SALT RIVER AND WYOMING MOUNTAINS. STRONG WESTERLY WINDS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW...ESPECIALLY IN THE MOUNTAINS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE OVER WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THIS AFTERNOON BEFORE TAPERING OFF. TOTAL SNOWFALL OF 5 TO 10 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 24 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ014-015-025-310000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER GREEN RIVER BASIN FOOTHILLS- INCLUDING THE CITY OF...PINEDALE 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. SNOWFALL OF 4 TO 8 INCHES HAS ALREADY FALLEN OVER PARTS OF THE WIND RIVER MOUNTAINS. WINDS GUSTING FROM 35 TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. SIGNIFICANT BLOWING AND DRIFTING SNOW WAS OBSERVED OVER SOUTH PASS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES...INCLUDING SOUTH AND TOGWOTEE PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THIS AFTERNOON BEFORE TAPERING OFF. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED IN THE UPPER GREEN RIVER BASIN FOOTHILLS...WITH 12 TO 24 INCHES POSSIBLE OVER THE WESTERN WIND RIVER MOUNTAINS. THE EASTERN WIND RIVER MOUNTAINS ARE EXPECTED TO GET BETWEEN 6 AND 14 INCHES...WITH THE HIGHEST SNOWFALL AMOUNTS EXPECTED OVER TOGWOTEE PASS...WHERE BETWEEN 12 AND 18 INCHES COULD OCCUR. SOUTH PASS SHOULD RECEIVE BETWEEN 10 AND 15 INCHES. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ001-310000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ YELLOWSTONE NATIONAL PARK- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. SNOWFALL OF 3 TO 12 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON COUNTY. WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THIS AFTERNOON BEFORE TAPERING OFF. SNOWFALL OF 3 TO 7 INCHES IS EXPECTED NEAR MAMMOTH...WITH 12 TO 24 INCHES POSSIBLE ACROSS SOUTHWEST YELLOWSTONE. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ002-310000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ ABSAROKA MOUNTAINS- 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. A STRONG PACIFIC STORM WILL MOVE INTO THE ABSAROKA MOUNTAINS TONIGHT...BRINGING SNOW AND STRONG WINDS. THE SNOW AND WIND WILL INTENSIFY AND SPREAD EAST AFTER MIDNIGHT. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. WIND GUSTS OVER 75 MPH ARE POSSIBLE. THE SNOW AND HIGH WINDS ARE EXPECTED TO CONTINUE TONIGHT THROUGH SUNDAY AFTERNOON BEFORE TAPERING OFF. SNOWFALL OF 4 TO 6 INCHES IS EXPECTED IN THE VALLEYS WITH 8 TO 14 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ027-310000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...KEMMERER...COKEVILLE 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. SNOWFALL BETWEEN 2 AND 3 INCHES HAS BEEN REPORTED SO FAR ACROSS THE LOWER ELEVATIONS OF SOUTHERN LINCOLN COUNTY...INCLUDING COKEVILLE AND KEMMERER. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF MODERATE AND HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THE AFTERNOON BEFORE TAPERING OFF. SNOWFALL TOTALS OF 4 TO 8 INCHES IS EXPECTED ACROSS SOUTHERN LINCOLN COUNTY. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ012-013-310000- /O.CON.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- INCLUDING THE CITY OF...JACKSON 307 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. SNOWFALL OF 3 TO 6 INCHES HAS ALREADY FALLEN OVER JACKSON HOLE...WITH 6 TO 12 INCHES ACROSS THE TETON AND GROS VENTRE MOUNTAINS...EXCEPT 12 TO 14 INCHES AT THE UPPER PORTION OF THE JACKSON HOLE SKI AREA. ALSO...WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. WHITE OUT CONDITIONS WERE REPORTED ON TOP OF RENDEZVOUS PEAK AND TETON PASS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THE AFTERNOON HOURS BEFORE TAPERING OFF. TOTAL SNOWFALL OF 5 TO 10 INCHES IS EXPECTED ACROSS JACKSON HOLE...WITH HIGHEST AMOUNTS NEAR MOOSE AND MORAN. 12 TO 24 INCHES OF SNOW IS EXPECTED ACROSS THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ TEAM RIVERTON
000 WWUS45 KRIW 301826 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 1126 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING EXTENDED THROUGH 11 PM MST THIS EVENING FOR THE WESTERN MOUNTAINS AND VALLEYS OF WYOMING... ...BLOWING SNOW ADVISORY THROUGH 11 PM MST THIS EVENING FOR SOUTHERN WYOMING... .A STRONG PACIFIC STORM WILL CONTINUE TO BRING PERIODS OF HEAVY SNOW AND STRONG WINDS TODAY AND THIS EVENING. THIS COMBINATION WILL CONTINUE TO CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THE EVENING HOURS TODAY BEFORE TAPERING OFF. TOTAL SNOWFALL OF 6 TO 12 INCHES IS EXPECTED IN THE VALLEYS WITH 12 TO 25 INCHES POSSIBLE IN THE MOUNTAINS. WYZ002-310600- /O.CAN.KRIW.WS.W.0013.000000T0000Z-071231T0000Z/ /O.NEW.KRIW.SN.Y.0039.071230T1826Z-071231T0600Z/ ABSAROKA MOUNTAINS- 1126 AM MST SUN DEC 30 2007 ...SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. THE WINTER STORM WARNING HAS BEEN CANCELLED. SNOWFALL OF 2 TO 6 INCHES HAS ALREADY FALLEN OVER THE ABSAROKA MOUNTAINS OVER NIGHT AND EARLY THIS MORNING. A STRONG PACIFIC STORM WILL BRING SNOWFALL AND BLOWING SNOW IN THE ABSAROKA MOUNTAINS THROUGH 11 PM MST. SNOW IS EXPECTED TO BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS. WIND GUSTS OVER 60 MPH ARE POSSIBLE. THE SNOW AND HIGH WINDS ARE EXPECTED TO CONTINUE UNTIL AROUND 11 PM MST. SNOWFALL OF 3 TO 5 INCHES IS EXPECTED IN THE VALLEYS WITH 5 TO 12 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. 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. $$ WYZ023-024-310600- /O.EXT.KRIW.WS.W.0013.000000T0000Z-071231T0600Z/ STAR VALLEY-SALT RIVER AND WYOMING RANGES- INCLUDING THE CITIES OF...AFTON...ALPINE...THAYNE 1126 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOWFALL BETWEEN 4 AND 10 INCHES HAS BEEN REPORTED ACROSS STAR VALLEY SO FAR...WITH 10 TO 18 INCHES OVER THE SALT RIVER AND WYOMING MOUNTAINS. STRONG WESTERLY WINDS IS CAUSING CONSIDERABLE BLOWING AND DRIFTING OF SNOW...ESPECIALLY IN THE MOUNTAINS. THE WIND AND SNOW WILL CONTINUE TO PRODUCE AREAS OF WHITE OUT CONDITIONS ACROSS LINCOLN COUNTY. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE OVER WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH 11 PM MST THIS EVENING BEFORE TAPERING OFF. TOTAL SNOWFALL OF 7 TO 14 INCHES IS EXPECTED IN THE VALLEYS WITH 15 TO 25 INCHES POSSIBLE IN THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ014-015-025-310600- /O.EXT.KRIW.WS.W.0013.000000T0000Z-071231T0600Z/ WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- UPPER GREEN RIVER BASIN FOOTHILLS- INCLUDING THE CITY OF...PINEDALE 1126 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOWFALL OF 4 TO 8 INCHES HAS ALREADY FALLEN OVER PARTS OF THE WIND RIVER MOUNTAINS. WINDS GUSTING FROM 35 TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. SIGNIFICANT BLOWING AND DRIFTING SNOW WAS OBSERVED OVER SOUTH PASS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE TOWARD WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES... INCLUDING SOUTH AND TOGWOTEE PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH THIS AFTERNOON BEFORE TAPERING OFF. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED IN THE UPPER GREEN RIVER BASIN FOOTHILLS...WITH 12 TO 24 INCHES POSSIBLE OVER THE WESTERN WIND RIVER MOUNTAINS. THE EASTERN WIND RIVER MOUNTAINS ARE EXPECTED TO GET BETWEEN 6 AND 14 INCHES...WITH THE HIGHEST SNOWFALL AMOUNTS EXPECTED OVER TOGWOTEE PASS...WHERE BETWEEN 12 AND 18 INCHES COULD OCCUR. SOUTH PASS SHOULD RECEIVE BETWEEN 10 AND 15 INCHES. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ001-310600- /O.EXT.KRIW.WS.W.0013.000000T0000Z-071231T0600Z/ YELLOWSTONE NATIONAL PARK- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 1126 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOWFALL OF 6 TO 15 INCHES HAS ALREADY FALLEN OVER THE SOUTHERN PART OF YELLOWSTONE NATIONAL PARK AND THE MOUNTAINS OF TETON COUNTY. WINDS GUSTING TO UP TO 45 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE THROUGH WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH 11 PM MST THIS EVENING BEFORE TAPERING OFF. SNOWFALL OF 3 TO 8 INCHES IS EXPECTED NEAR MAMMOTH...WITH 15 TO 25 INCHES POSSIBLE ACROSS SOUTHWEST YELLOWSTONE. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ027-310600- /O.EXT.KRIW.WS.W.0013.000000T0000Z-071231T0600Z/ SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...KEMMERER...COKEVILLE 1126 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOWFALL BETWEEN 4 AND 8 INCHES HAS BEEN REPORTED SO FAR ACROSS THE LOWER ELEVATIONS OF SOUTHERN LINCOLN COUNTY...INCLUDING COKEVILLE AND KEMMERER. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE THROUGH WESTERN WYOMING. PERIODS OF MODERATE AND HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH 11 PM MST THIS EVENING BEFORE TAPERING OFF. SNOWFALL TOTALS OF 6 TO 12 INCHES IS EXPECTED ACROSS SOUTHERN LINCOLN COUNTY. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ012-013-310600- /O.EXT.KRIW.WS.W.0013.000000T0000Z-071231T0600Z/ TETON AND GROS VENTRE MOUNTAINS-JACKSON HOLE- INCLUDING THE CITY OF...JACKSON 1126 AM MST SUN DEC 30 2007 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 11 PM MST THIS EVENING... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOWFALL OF 3 TO 9 INCHES HAS ALREADY FALLEN OVER JACKSON HOLE... WITH 10 TO 18 INCHES ACROSS THE TETON AND GROS VENTRE MOUNTAINS. WINDS GUSTING TO UP TO 65 MPH WITH BLOWING AND DRIFTING SNOW ON THE MOUNTAIN PASSES AND PEAKS WERE CAUSING AREAS OF WHITE OUT CONDITIONS. A STRONG PACIFIC STORM SYSTEM CONTINUES TO MOVE THROUGH WESTERN WYOMING. PERIODS OF HEAVY SNOW AND STRONG WINDS WILL CAUSE SIGNIFICANT BLOWING AND DRIFTING SNOW. TRAVELERS WILL EXPERIENCE WHITE OUT CONDITIONS...ESPECIALLY OVER MOUNTAIN PASSES. THE SNOW AND STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH 11 PM MST THIS EVENING BEFORE TAPERING OFF. TOTAL SNOWFALL OF 6 TO 14 INCHES IS EXPECTED ACROSS JACKSON HOLE...WITH HIGHEST AMOUNTS NEAR MOOSE AND MORAN. 15 TO 25 INCHES OF SNOW IS EXPECTED ACROSS THE MOUNTAINS. REMEMBER...A WINTER STORM WARNING MEANS SEVERE WINTER WEATHER CONDITIONS ARE IMMINENT OR HIGHLY LIKELY. $$ WYZ019-310600- /O.NEW.KRIW.BS.Y.0002.071230T1826Z-071231T0600Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 1126 AM MST SUN DEC 30 2007 ...BLOWING SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A BLOWING SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. STRONG WEST WINDS OF 25 TO 35 MPH WILL COMBINE WITH SNOW FALL AND SNOW ON THE GROUND TO PRODUCE AREAS OF SIGNIFICANT BLOWING AND DRIFTING SNOW ACROSS THE GREEN MOUNTAINS AND THE RATTLESNAKE RANGE THROUGH 11 PM MST THIS EVENING. LOCAL WHITE OUT CONDITIONS MAY BE ENCOUNTERED BETWEEN BEAVER RIM AND MUDDY GAP ALONG HIGHWAY 287. A BLOWING SNOW ADVISORY IS NORMALLY ISSUED WHEN BLOWING AND DRIFTING WILL CAUSE CONSIDERABLY REDUCED VISIBILITIES AND HAZARDOUS TRAVEL CONDITIONS...ESPECIALLY IN OPEN AREAS. $$ WYZ028>030-310600- /O.NEW.KRIW.BS.Y.0002.071230T1826Z-071231T0600Z/ ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...ROCK SPRINGS...GREEN RIVER...WAMSUTTER 1126 AM MST SUN DEC 30 2007 ...BLOWING SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A BLOWING SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. STRONG WEST WINDS OF 25 TO 35 MPH WILL COMBINE WITH SNOW FALL AND SNOW ON THE GROUND TO PRODUCE AREAS OF SIGNIFICANT BLOWING AND DRIFTING SNOW ACROSS SWEETWATER COUNTY THROUGH 11 PM MST THIS EVENING. LOCAL WHITE OUT CONDITIONS MAY BE ENCOUNTERED BETWEEN ROCK SPRINGS AND SOUTH PASS AND ALONG INTERSTATE 80. A BLOWING SNOW ADVISORY IS NORMALLY ISSUED WHEN BLOWING AND DRIFTING WILL CAUSE CONSIDERABLY REDUCED VISIBILITIES AND HAZARDOUS TRAVEL CONDITIONS...ESPECIALLY IN OPEN AREAS. $$ WYZ026-310600- /O.NEW.KRIW.BS.Y.0002.071230T1826Z-071231T0600Z/ UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...LA BARGE...BIG PINEY...FARSON 1126 AM MST SUN DEC 30 2007 ...BLOWING SNOW ADVISORY IN EFFECT UNTIL 11 PM MST THIS EVENING... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A BLOWING SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 11 PM MST THIS EVENING. STRONG WEST WINDS OF 25 TO 35 MPH WILL COMBINE WITH SNOW FALL AND SNOW ON THE GROUND TO PRODUCE AREAS OF SIGNIFICANT BLOWING AND DRIFTING SNOW ACROSS THE LOWER ELEVATIONS OF SUBLETTE COUNTY THROUGH 11 PM MST THIS EVENING. LOCAL WHITE OUT CONDITIONS MAY BE ENCOUNTERED. A BLOWING SNOW ADVISORY IS NORMALLY ISSUED WHEN BLOWING AND DRIFTING WILL CAUSE CONSIDERABLY REDUCED VISIBILITIES AND HAZARDOUS TRAVEL CONDITIONS...ESPECIALLY IN OPEN AREAS. $$ C.BAKER
000 WWUS45 KRIW 310311 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 811 PM MST SUN DEC 30 2007 WYZ001-012>015-023>025-027-310415- /O.CAN.KRIW.WS.W.0013.000000T0000Z-071231T0600Z/ YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS- JACKSON HOLE-WIND RIVER MOUNTAINS WEST-WIND RIVER MOUNTAINS EAST- STAR VALLEY-SALT RIVER AND WYOMING RANGES- UPPER GREEN RIVER BASIN FOOTHILLS-SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL... JACKSON...AFTON...ALPINE...THAYNE...PINEDALE...KEMMERER... COKEVILLE 811 PM MST SUN DEC 30 2007 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER STORM WARNING. ALTHOUGH SCATTERED SNOW SHOWERS WILL CONTINUE TONIGHT...ADDITIONAL SNOWFALL IS EXPECTED TO BE GENERALLY LESS THAN AN INCH. PLEASE CHECK ON THE LATEST ROAD CONDITIONS BEFORE VENTURING OUT TONIGHT. $$ WYZ002-310415- /O.CAN.KRIW.SN.Y.0039.000000T0000Z-071231T0600Z/ ABSAROKA MOUNTAINS- 811 PM MST SUN DEC 30 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE SNOW ADVISORY. ALTHOUGH SCATTERED SNOW SHOWERS WILL CONTINUE TONIGHT...ADDITIONAL SNOWFALL IS EXPECTED TO BE GENERALLY LESS THAN AN INCH. PLEASE CHECK ON THE LATEST ROAD CONDITIONS BEFORE VENTURING OUT TONIGHT. $$ WYZ019-026-028>030-310415- /O.CAN.KRIW.BS.Y.0002.000000T0000Z-071231T0600Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE-UPPER GREEN RIVER BASIN- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...JEFFREY CITY...LA BARGE...BIG PINEY... FARSON...ROCK SPRINGS...GREEN RIVER...WAMSUTTER 811 PM MST SUN DEC 30 2007 ...BLOWING SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE BLOWING SNOW ADVISORY. WINDS HAVE WEAKENED FROM THE VERY STRONG WINDS EXPERIENCED THIS AFTERNOON...CREATING BLOWING SNOW WITH VISIBILITIES OF A QUARTER OF A MILE OR LESS AT TIMES. WESTERLY WINDS WILL HOWEVER CONTINUE TO BE SUSTAINED TONIGHT...BETWEEN 15 AND 25 MPH...WITH GUSTS TO 35 MPH...ACROSS SWEETWATER COUNTY...AS WELL AS THE GREEN AND RATTLESNAKE RANGES. THIS WILL STILL CREATE BLOWING AND SOME DRIFTING OF SNOW...REDUCING VISIBILITY IN A FEW SPOTS BETWEEN A MILE OR TWO. WINDS WILL BE A TAD WEAKER IN THE UPPER GREEN RIVER BASIN...WHERE VISIBILITIES SHOULD BE GOOD TONIGHT. PLEASE CHECK ON THE LATEST ROAD CONDITIONS BEFORE VENTURING OUT TONIGHT. $$
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 Riverton, WY wrote its last area forecast discussion before this winter storm warning went out at Dec 29, 3:06 AM MST, 6 hours 16 minutes earlier.
Area forecast discussion, Dec 29, 3:06 AM MST, 6 hours 16 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RIVERTON WY 306 AM MST SAT DEC 29 2007 .SHORT TERM...TODAY THROUGH MONDAY NIGHT SNOW CURRENTLY MOVING INTO WESTERN WYOMING THIS MORNING...AND ESPECIALLY NOTED OVER TETON PASS. MODELS AT 00Z THIS EVENING INDICATED A SLOWER ARRIVAL OF THE UPCOMING WINTER STORM FOR THE WESTERN MOUNTAINS AND VALLEYS...THOUGH MORE RECENT 06Z MODEL RUNS HINTING AT A STRONGER ENTRANCE DURING THE MORNING HOURS TODAY. TIMING QUESTIONS STILL VERY EVIDENT IN FORECAST THIS MORNING. AS DECIDED EARLIER IN SIMILAR THOUGHT TO SURROUNDING WFOS...HAVE DELAYED THE ONSET OF THE WINTER STORM WATCH UNTIL THE EVENING HOURS. TAPERED BACK SNOW AMOUNTS FOR TODAY. LIGHT SNOW IS ANTICIPATED DURING THE MORNING AND AFTERNOON HOURS TODAY...THOUGH WILL BE LIGHT WITH ONLY 1 TO 2 INCHES EXPECTED OVER THE HIGHER ELEVATIONS. EXPECT HEAVIER SNOW TO REALLY MOVE INTO THE AREA DURING THE EVENING AND OVERNIGHT HOURS. HAVE NOT UPGRADED THE WINTER STORM WATCH FOR NOW TO ALLOW THE NEXT SHIFT A CHANCE TO SEE THE EVOLUTION OF THE STORM TODAY BEFORE MAKING THE FINAL DECISION. ALL MODEL RUNS CONTINUE TO INDICATE THAT WINDS WILL STRENGTHEN THIS EVENING AND OVERNIGHT AS A STRONG JET MOVES OVER THE AREA. UPPER LEVEL WINDS OF 60 TO 70 MPH WILL TRY TO MIX DOWN SUNDAY MORNING AND AFTERNOON...ESPECIALLY IMPACTING THE SOUTHERN ABSAROKA MOUNTAINS...THE GENERAL WIND RIVER BASIN ESPECIALLY AROUND DUBOIS AND THE LANDER FOOTHILLS...AND THE GREEN MOUNTAINS AND RATTLESNAKE RANGE. ASSUMING THIS MIXING WILL OCCUR...CURRENTLY EXPECT WINDS OF 35 TO 40 MPH WITH GUSTS TO AROUND 55 ACROSS THESE AREAS. HAVE ISSUED A HIGH WIND WATCH EFFECTIVE FROM 9 PM MST SATURDAY UNTIL 5 PM SUNDAY. TEMPERATURES ALSO CONTINUE TO BE A CHALLENGE FOR TODAY...HAVE LOWERED THE SOUTHERN ZONES A COUPLE OF DEGREES FROM THEIR PREVIOUSLY FORECAST HIGH TEMPERATURES. ELSEWHERE...CONTINUED THE WARMING TREND UNDER INCREASED CLOUD COVER. SNOW AND WIND EXPECT TO WEAKEN DURING THE EVENING HOURS OF SUNDAY. TOTAL SNOW ACCUMULATIONS ACROSS WESTERN WYOMING WILL BE 4 TO 8 INCHES IN THE VALLEYS...WITH 10 TO 14 INCHES POSSIBLE OVER THE MOUNTAIN LOCATIONS. INCREASED WINDS WILL CONTINUE INTO MONDAY...ALONG WITH LIGHT SNOW AS TROUGH MOVES SOUTH INTO NORTHERN COLORADO. MONDAY NIGHT WILL SEE SNOW TAPERING OF FURTHER...WITH ONLY THE NORTHERN THIRD OF THE CWA SEEING LIGHT SNOW THROUGH MONDAY NIGHT. .LONG TERM...TUESDAY THROUGH SATURDAY TRANSITORY RIDGE MOVES ACROSS THE AREA TUESDAY AND WEDNESDAY WITH DRY CONDITIONS AND STRONG BASIN/VALLEY INVERSIONS WITH POSSIBLE FOG WEDNESDAY MORNING. THE FLOW THEN OPENS UP AGAIN THURSDAY WITH A MOIST AND DYNAMIC SOUTHWEST FLOW DEVELOPING THURSDAY NIGHT AND ESPECIALLY FRIDAY INTO SATURDAY. SEVERAL SHORTWAVES ARE FORECAST TO MOVE THROUGH IN THE ACTIVE FLOW PROVIDING PERIODS OF SNOW OUT WEST AND PROBABLY THE I-80 CORRIDOR. WILL CONFINE ALL THE POPS TO AREAS WEST OF THE DIVIDE FOR NOW EXCEPT FOR SOME CUTTING INTO THE GREEN MTNS AND RATTLESNAKE ZONE. PLENTY OF TIME TO FINE TUNE THIS AS THE TIME DRAWS NEARER. TEMPERATURES WARM CONSIDERABLY UNDER THE RIDGE AND AHEAD OF THIS DEVELOPING SOUTHWEST FLOW. WITH PLENTY OF SW GRADIENT...THE WIND CORRIDOR...CODY FOOTHILLS AND LOWER ELEVATIONS OF JOHNSON COUNTY WILL LIKELY MIX AND WARM INTO THE 30S AND 40S WITH CONSIDERABLY COLDER READINGS IN THE TRAPPED BASINS/VALLEYS. HOWEVER...AS THE GRADIENT INCREASES STATEWIDE FRIDAY EVEN THE BASINS AND VALLEYS MAY MIX OUT. WILL NUDGE THE TEMPERATURES BASED ON THIS POSSIBILITY AND SEE HOW THE PATTERN LOOKS AGAIN TONIGHT. SO AFTER A BRIEF RESPITE FROM OUR ACTIVE PERIOD TO BEGIN THE MEDIUM RANGE PERIOD...IT LOOKS LIKE IT WILL END ACTIVE AND CONTINUE WELL BEYOND THIS PERIOD. && .AVIATION... OCCASIONAL LIGHT SNOW WITH AREAS OF MVFR CIGS AND VSBYS WILL CONTINUE ACROSS THE WESTERN MOUNTAINS AND VCNTY KJAC/KPNA THROUGH SATURDAY MORNING. SNOW WILL INCREASE OVER THESE WESTERN AREAS SATURDAY AFTERNOON WITH WINDS INTENSIFYING SATURDAY EVENING AND CAUSING AREAS OF BLOWING SNOW AND AREAS IFR/LIFR CONDITIONS THROUGH SATURDAY NIGHT. A STRONG JET STREAK WILL CROSS THE DIVIDE SATURDAY NIGHT RESULTING IN AREAS OF SEVERE TURBULENCE AND THE POSSIBILITY OF STRONG DOWNSLOPE WINDS FROM THE SOUTHERN END OF THE ABSAROKAS DOWN THE EAST SLOPES OF THE WIND RIVER MOUNTAINS. && .FIRE WEATHER... LIGHT SNOW WILL BE FOUND ACROSS THE WESTERN MOUNTAINS AND VALLEYS TODAY...WITH SNOW INTENSIFYING DURING THE EVENING AND OVERNIGHT HOURS. TEMPERATURES WILL BE WARMER TODAY ACROSS THE AREA...AND WILL CONTINUE TO WARM OVER THE NEXT COUPLE OF DAYS. SNOW WILL BE HEAVY AT TIMES TONIGHT AND THROUGHOUT SUNDAY. ADDITIONALLY... STRONG WINDS WILL DEVELOP LATE SATURDAY AND LAST THROUGH THE DAY ON SUNDAY. THESE HIGHER WINDS WILL CREATE BLOWING SNOW ACROSS THE WEST. EXPECT THESE HIGH WINDS TO POTENTIALLY MOVE INTO CENTRAL WYOMING AS WELL...WITH THE WIND RIVER BASIN...SOUTHERN ABSAROKA MOUNTAINS...AND THE GREEN MOUNTAINS AND RATTLESNAKE RANGE SEEING WINDS OF 35 TO 40 MPH AND GUSTS TO 55 MPH DURING THE DAY ON SUNDAY. && .RIW WATCHES/WARNINGS/ADVISORIES... HIGH WIND WATCH FROM THIS EVENING THROUGH SUNDAY AFTERNOON FOR WYZ002-016>019. WINTER STORM WATCH FROM THIS AFTERNOON THROUGH SUNDAY AFTERNOON FOR WYZ001-012>015-023>025-027. && SHORT TERM...BRANHAM LONG TERM...SKRBAC AVIATION...AEM FIRE WEATHER...BRANHAM
Hazardous weather outlook, Dec 29, 5:00 AM MST, 4 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 500 AM MST SAT DEC 29 2007 WYZ001>020-022>030-301200- ABSAROKA MOUNTAINS-BIGHORN MOUNTAINS SOUTHEAST- BIGHORN MOUNTAINS WEST-CASPER MOUNTAIN-CODY FOOTHILLS- EAST SWEETWATER COUNTY-FLAMING GORGE- GREEN MOUNTAINS AND RATTLESNAKE RANGE-JACKSON HOLE-LANDER FOOTHILLS- NATRONA COUNTY LOWER ELEVATIONS-NORTH BIG HORN BASIN- NORTHEAST JOHNSON COUNTY-OWL CREEK AND BRIDGER MOUNTAINS- ROCK SPRINGS AND GREEN RIVER-SALT RIVER AND WYOMING RANGES- SOUTH LINCOLN COUNTY-SOUTHEAST BIG HORN BASIN- SOUTHEAST JOHNSON COUNTY-SOUTHWEST BIG HORN BASIN-STAR VALLEY- TETON AND GROS VENTRE MOUNTAINS-UPPER GREEN RIVER BASIN- UPPER GREEN RIVER BASIN FOOTHILLS-UPPER WIND RIVER BASIN- WIND RIVER BASIN-WIND RIVER MOUNTAINS EAST-WIND RIVER MOUNTAINS WEST- YELLOWSTONE NATIONAL PARK- 500 AM MST SAT DEC 29 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. ..WINTER STORM WATCH FOR WESTERN MOUNTAINS AND VALLEYS TONIGHT THROUGH SUNDAY AFTERNOON... ...HIGH WIND WATCH FOR PORTIONS OF CENTRAL WYOMING LATER THIS EVENING THROUGH SUNDAY... .DAY ONE...TODAY AND TONIGHT A MAJOR WINTER STORM MAY MOVE INTO THE WEST BY TONIGHT AND CONTINUE THROUGH SUNDAY. LIGHT SNOW WILL BEGIN ACROSS THE FAR WEST TODAY BUT BECOME HEAVIER TONIGHT ALONG WITH INCREASING WIND. AS THE SNOW AND WINDS INCREASE TONIGHT...TRAVEL MAY BECOME INCREASINGLY HAZARDOUS DUE TO COLD TEMPERATURES...BLOWING AND DRIFTING SNOW...LIMITED VISIBILITIES AND SLICK ROADS. USE CAUTION IF TRAVELLING THROUGH SUNDAY...ESPECIALLY OVER MOUNTAIN PASSES. VERY STRONG WEST WINDS MAY DEVELOP TONIGHT FROM THE SOUTH END OF THE ABSAROKA MOUNTAINS...SOUTH TO THE DUBOIS AREA...AND OVER TO THE LANDER FOOTHILLS...WIND RIVER BASIN AND FROM BEAVER RIM TO SWEETWATER STATION AND JEFFREY CITY. WEST WINDS OF 35 TO 40 MPH WITH GUSTS TO 60 MPH ARE POSSIBLE IN THE LOWER ELEVATION AREAS WITH WINDS OF 50 MPH GUSTING TO 75 MPH IN THE ABSAROKA MOUNTAINS. EVEN STRONGER WINDS ARE POSSIBLE...ESPECIALLY ALONG THE LANDER FOOTHILLS LATER TONIGHT. PLEASE STAY TUNED FOR THE LATEST FORECAST AND POSSIBLE HIGH WIND WARNINGS LATER TODAY. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE PACIFIC STORM WILL CONTINUE THROUGH THE DAY SUNDAY BEFORE TAPERING OFF. THE SNOW MAY BE HEAVY AT TIMES WITH STRONG WINDS CAUSING WHITE OUT CONDITIONS...ESPECIALLY OVER THE MOUNTAIN PASSES. SNOWFALL OF 4 TO 8 INCHES IS POSSIBLE IN THE VALLEYS WITH 8 TO 18 INCHES POSSIBLE IN THE MOUNTAINS. SIGNIFICANT DRIFTING IS EXPECTED. THE POTENTIAL HIGH WIND EVENT FOR PORTIONS OF CENTRAL WYOMING WILL CONTINUE DURING THE DAY SUNDAY BEFORE DECREASING SUNDAY NIGHT. ANOTHER STORM SYSTEM MAY BRING SIGNIFICANT SNOWFALL TO FAR WESTERN WYOMING THURSDAY NIGHT AND FRIDAY. STAY TUNED AS THE ACTIVE EARLY WINTER PATTERN CONTINUES. .SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS THROUGH TONIGHT ALONG WITH ANY MEASURED WIND SPEEDS. TEAM RIVERTON
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 3:10 AM MST | High Wind Watch | RIW | Fremont, Hot Springs, Natrona, Park, Sweetwater | 31 hr |
| Dec 29, 2:00 PM MST | High Wind Warning | RIW | Fremont, Natrona, Park, Sweetwater | 20 hr |
Nearby
Winter Storm Warnings in Wyoming, 2007Every winter storm warning in 2007
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.