Alert archive / Wyoming / Winter Storm Warnings in 2007
Winter Storm Warning 2, NWS Riverton, WY
NWS Riverton, WY issued this winter storm warning at Jan 11, 2007, 8:20 AM MST for 5 counties in Wyoming. It was in force for 25 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
- Jan 11, 2007, 8:20 AM MST (15:20 UTC)
- Expired
- Jan 12, 2007, 8:51 AM MST
- In force
- 25 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Hot Springs County, WY, Natrona County, WY, Sublette County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 27 km from the middle of the area, began a volume at 15:23 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, 3.3 hours before the alert went out and 29 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
- 734 m above ground
- 0-6 km bulk shear
- 93 kt
- 0-1 km storm-relative helicity
- 219 m²/s²
- 0-3 km storm-relative helicity
- 331 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 111520 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 820 AM MST THU JAN 11 2007 ...ARCTIC COLD FRONT AND POWERFUL WINTER STORM TO BRING SNOW ACROSS WEST AND CENTRAL WYOMING TODAY... .A MOIST SOUTHWEST FLOW AHEAD OF A POWERFUL STORM SYSTEM WILL SPREAD SNOW ACROSS WYOMING TODAY. A COLD ARCTIC FRONT WILL PLUNGE SOUTH ACROSS WYOMING TODAY RESULTING IN TEMPERATURES PLUNGING INTO THE SINGLE DIGITS BY FRIDAY. THUS... SNOW WILL INITIALLY FALL ON WARM ROAD SURFACES...WITH WET ROADS QUICKLY FREEZING... RESULTING IN EXTREMELY SLICK AND ICY CONDITIONS. WYZ013-111630- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070112T0000Z/ JACKSON HOLE- INCLUDING THE CITY OF...JACKSON 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELED THE SNOW ADVISORY. LIGHT SNOW WILL FALL IN JACKSON HOLE TODAY WITH SNOWFALL ACCUMULATIONS OF 2 TO 3 INCHES. $$ WYZ023-025-026-111630- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070113T0000Z/ STAR VALLEY-UPPER GREEN RIVER BASIN FOOTHILLS- UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...AFTON...ALPINE...THAYNE...PINEDALE... LA BARGE...BIG PINEY...FARSON 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELED THE SNOW ADVISORY. LIGHT SNOW WILL FALL ACROSS THE STAR VALLEY AND THE UPPER GREEN RIVER BASIN TODAY AND TONIGHT. SNOWFALL OF 2 TO 3 INCHES IS EXPECTED. $$ WYZ005-007-120200- /O.UPG.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ /O.NEW.KRIW.WS.W.0002.070111T1520Z-070112T1200Z/ SOUTHWEST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- INCLUDING THE CITY OF...THERMOPOLIS 820 AM MST THU JAN 11 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST FRIDAY. THE SNOW ADVISORY IS NO LONGER IN EFFECT. SNOW WILL SPREAD SOUTH ACROSS THE SOUTHERN BIG HORN BASIN TODAY AND CONTINUE THROUGH THIS EVENING...BEFORE TAPERING OFF EARLY FRIDAY MORNING. A TOTAL OF 5 TO 8 INCHES IS EXPECTED AROUND THERMOPOLIS...WITH 8 TO 14 INCHES IN THE OWL CREEK MOUNTAINS BY EARLY FRIDAY MORNING. AREA ROADS AND HIGHWAYS WILL LIKELY BECOME EXTREMELY SLICK AND ICY THIS MORNING AS SNOW INITIALLY FALLS ON WARM ROAD SURFACES... WITH WET ROADS QUICKLY FREEZING AS TEMPERATURES PLUNGE INTO THE SINGLE DIGITS BEHIND THE COLD FRONT. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ015>020-022-120200- /O.UPG.KRIW.SN.Y.0003.000000T0000Z-070113T0000Z/ /O.NEW.KRIW.WS.W.0002.070111T1520Z-070112T1200Z/ WIND RIVER MOUNTAINS EAST-UPPER WIND RIVER BASIN-WIND RIVER BASIN- LANDER FOOTHILLS-GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER... JEFFREY CITY...CASPER 820 AM MST THU JAN 11 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 AM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 AM MST FRIDAY. THE SNOW ADVISORY IS NO LONGER IN EFFECT. WIDESPREAD SNOW WAS OCCURRING OVER FREMONT AND NATRONA COUNTIES THIS MORNING. SNOWFALL HAS RANGED FROM 2 TO 4 INCHES WITH LOCALLY HIGHER AMOUNTS AROUND LANDER. GUSTY NORTHEAST WIND OF 15 TO 25 MPH WAS CREATING VERY LOW VISIBILITY IN OPEN AREAS...ALONG WITH BLOWING AND DRIFTING SNOW. SNOW WILL CONTINUE OVER THE AREA TODAY AND TONIGHT. TOTAL SNOWFALL BY FRIDAY MORNING WILL RANGE FROM 4 TO 8 INCHES ACROSS NATRONA AND FREMONT COUNTIES. SNOWFALL IN THE WIND RIVER MOUNTAINS... THE GREEN MOUNTAINS... RATTLESNAKE RANGE...AND CASPER MOUNTAIN AREA WILL RANGE FROM 8 TO 14 INCHES. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ014-024-120200- /O.EXT.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ WIND RIVER MOUNTAINS WEST-SALT RIVER AND WYOMING RANGES- 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY NOW IN EFFECT UNTIL 5 AM MST FRIDAY... THE SNOW ADVISORY IS NOW IN EFFECT UNTIL 5 AM MST FRIDAY. SNOW WILL SPREAD ACROSS THE AREA THIS MORNING AND CONTINUE THROUGH FRIDAY...BEFORE TAPERING OFF LATE FRIDAY EVENING. A TOTAL OF 3 TO 5 INCHES IS EXPECTED IN THE LOWER ELEVATIONS WITH 5 TO 9 INCHES ACROSS THE MOUNTAINS. AREA ROADS AND HIGHWAYS WILL LIKELY BECOME EXTREMELY SLICK AND ICY THIS MORNING AS SNOW INITIALLY FALLS ON WARM ROAD SURFACES... WITH WET ROADS QUICKLY FREEZING AS TEMPERATURES PLUNGE INTO THE SINGLE DIGITS BEHIND THE COLD FRONT. 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. $$ WYZ001-012-120000- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T0000Z/ YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. SNOW WILL BECOME WIDESPREAD ACROSS YELLOWSTONE NATIONAL PARK THIS MORNING. SNOW WILL CONTINUE THROUGH THIS AFTERNOON BEFORE TAPERING OFF THIS EVENING. STORM TOTAL SNOWFALL OF UP TO A FOOT IS EXPECTED ON THE PEAKS OF THE TETON RANGE. YELLOWSTONE NATIONAL PARK WILL RECEIVE 6 TO 10 INCHES OF NEW SNOWFALL. ROADS ACROSS TETON COUNTY WILL LIKELY BECOME EXTREMELY SLICK AND ICY. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ WYZ002>004-120200- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T0600Z/ ABSAROKA MOUNTAINS-CODY FOOTHILLS-NORTH BIG HORN BASIN- INCLUDING THE CITIES OF...CODY...MEETEETSE...POWELL...LOVELL... GREYBULL...BASIN 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL OCCUR ACROSS THE NORTHERN BIG HORN BASIN TODAY AND CONTINUE THROUGH THIS EVENING...BEFORE TAPERING OFF LATE THIS EVENING. A TOTAL OF 3 TO 5 INCHES IS EXPECTED FROM POWELL AND LOVELL SOUTH TO GREYBULL WITH 4 TO 6 INCHES ALONG THE CODY FOOTHILLS. THE ABSAROKA MOUNTAINS AND BEARTOOTH PASS AREA WILL RECEIVE 6 TO 10 INCHES OF NEW SNOWFALL THROUGH THIS EVENING. AREA ROADS AND HIGHWAYS WILL LIKELY BECOME EXTREMELY SLICK AND ICY. 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. $$ WYZ008-009-120200- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T0600Z/ BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE ACROSS THE BIG HORN MOUNTAINS TODAY INTO THIS EVENING. A TOTAL OF 6 TO 12 INCHES OF NEW SNOWFALL IS EXPECTED. WEST WINDS AT 25 TO 35 MPH WITH GUSTS TO 50 MPH WILL CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY OVER POWDER RIVER PASS AND GRANITE PASS THROUGH THIS AFTERNOON... BEFORE DIMINISHING THIS EVENING. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ WYZ010-011-120200- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T0600Z/ NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- INCLUDING THE CITIES OF...BUFFALO...KAYCEE 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE ACROSS THE AREA TODAY. A TOTAL OF 4 TO 6 INCHES IS EXPECTED ALONG INTERSTATE 25 AND 90 WITH UP TO 8 INCHES IN THE FOOTHILLS AROUND BUFFALO AND LAKE DE SMET. INTERSTATES 25 AND 90 AND AREA ROADS WILL LIKELY BECOME EXTREMELY SLICK AND ICY THIS MORNING. NORTH WINDS AT 15 TO 30 MPH WILL ALSO CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY. 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. $$ WYZ006-120200- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ SOUTHEAST BIG HORN BASIN- INCLUDING THE CITY OF...WORLAND 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. SNOW WILL SPREAD SOUTH ACROSS THE SOUTHERN BIG HORN BASIN TODAY AND CONTINUE THROUGH THIS EVENING...BEFORE TAPERING OFF EARLY FRIDAY MORNING. A TOTAL OF 3 TO 5 INCHES IS EXPECTED FROM WORLAND TO THERMOPOLIS...WITH 5 TO 9 INCHES FROM THERMOPOLIS SOUTH INTO THE OWL CREEK MOUNTAINS BY EARLY FRIDAY MORNING. AREA ROADS AND HIGHWAYS WILL LIKELY BECOME EXTREMELY SLICK AND ICY THIS MORNING AS SNOW INITIALLY FALLS ON WARM ROAD SURFACES... WITH WET ROADS QUICKLY FREEZING AS TEMPERATURES PLUNGE INTO THE SINGLE DIGITS BEHIND THE COLD FRONT. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ WYZ027>030-120200- /O.CON.KRIW.SN.Y.0003.070111T2200Z-070113T0000Z/ SOUTH LINCOLN COUNTY-ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE- EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...KEMMERER...COKEVILLE...ROCK SPRINGS... GREEN RIVER...WAMSUTTER 820 AM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 PM MST FRIDAY... A SNOW ADVISORY REMAINS IN EFFECT FROM 3 PM THIS AFTERNOON TO 5 PM MST FRIDAY. SNOW WILL SPREAD ACROSS THE AREA THIS AFTERNOON AND CONTINUE THROUGH FRIDAY...BEFORE TAPERING OFF LATE FRIDAY EVENING. A TOTAL OF 3 TO 6 INCHES IS EXPECTED ACROSS THE AREA. AREA ROADS AND HIGHWAYS WILL LIKELY BECOME EXTREMELY SLICK AND ICY THIS AFTERNOON AS SNOW INITIALLY FALLS ON WARM ROAD SURFACES... WITH WET ROADS QUICKLY FREEZING AS TEMPERATURES PLUNGE INTO THE SINGLE DIGITS BEHIND THE COLD FRONT. AREAS OF REDUCED VISIBILITIES IN BLOWING AND DRIFTING SNOW WILL ALSO BE POSSIBLE AS STRONG WINDS DEVELOP BEHIND A COLD FRONT. 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. $$
4 follow-up statements
000 WWUS45 KRIW 112132 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 232 PM MST THU JAN 11 2007 ...ARCTIC COLD FRONT AND POWERFUL WINTER STORM TO BRING SNOW ACROSS SOUTHERN AND CENTRAL WYOMING TONIGHT AND FRIDAY... .A MOIST SOUTHWEST FLOW AHEAD OF A POWERFUL STORM SYSTEM WILL SPREAD SNOW ACROSS SOUTHERN AND CENTRAL WYOMING TONIGHT AND FRIDAY. A COLD ARCTIC FRONT WILL PLUNGE TEMPERATURES BELOW ZERO TONIGHT AND FRIDAY. THE HEAVIEST SNOWFALL IS EXPECTED ACROSS SWEETWATER COUNTY AND SOUTHERN NATRONA COUNTY. THE STORM CONTINUES TO MOVE SOUTH AND EAST...THUS ADVISORIES FOR AREAS TO THE NORTH AND WEST HAVE BEEN CANCELED. WYZ015>018-120545- /O.CAN.KRIW.WS.W.0002.000000T0000Z-070112T1200Z/ /O.EXB.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ WIND RIVER MOUNTAINS EAST-UPPER WIND RIVER BASIN-WIND RIVER BASIN- LANDER FOOTHILLS- INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER 232 PM MST THU JAN 11 2007 ...WINTER STORM WARNING IS CANCELLED... ...SNOW ADVISORY IN EFFECT UNTIL 5 AM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 5 AM MST FRIDAY. THE WINTER STORM WARNING HAS BEEN CANCELED. SNOW WILL CONTINUE ACROSS THE WIND RIVER BASIN TONIGHT. ADDITONAL SNOWFALL OF 2 TO 5 INCHES IS EXPECTED BY MORNING. NORTH WINDS AT 15 TO 30 MPH WILL ALSO CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY OVER OPEN AREAS. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ WYZ005-007-120545- /O.CAN.KRIW.WS.W.0002.000000T0000Z-070112T1200Z/ /O.EXB.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ SOUTHWEST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- INCLUDING THE CITY OF...THERMOPOLIS 232 PM MST THU JAN 11 2007 ...WINTER STORM WARNING IS CANCELLED... ...SNOW ADVISORY IN EFFECT UNTIL 5 AM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A SNOW ADVISORY...WHICH IS IN EFFECT UNTIL 5 AM MST FRIDAY. THE WINTER STORM WARNING HAS BEEN CANCELED. SNOW WILL CONTINUE ACROSS HOT SPRINGS COUNTY TONIGHT. ADDITIONAL SNOWFALL OF 2 TO 5 INCHES IS EXPECTED AROUND THERMOPOLIS WITH HIGHER AMOUNTS IN THE OWL CREEK AND BRIDGER MOUNTAINS. 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. $$ WYZ001-012-112245- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070112T0000Z/ YELLOWSTONE NATIONAL PARK-TETON AND GROS VENTRE MOUNTAINS- INCLUDING THE CITIES OF...LAKE...MAMMOTH...OLD FAITHFUL 232 PM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELED THE SNOW ADVISORY. THE STORM THAT BROUGHT SNOWFALL TO WESTERN WYOMING HAS MOVED SOUTH AND EAST. THIS HAS DECREASED THE SNOW OVER WESTERN WYOMING. LIGHT SNOW WILL CONTINUE IN THE MOUNTAINS WITH LITTLE ADDITIONAL ACCUMULATION IN THE VALLEYS. $$ WYZ006-014-024-112245- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ SOUTHEAST BIG HORN BASIN-WIND RIVER MOUNTAINS WEST- SALT RIVER AND WYOMING RANGES- INCLUDING THE CITY OF...WORLAND 232 PM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELED THE SNOW ADVISORY. THE STORM THAT BROUGHT SNOWFALL TO WESTERN WYOMING HAS MOVED SOUTH AND EAST. THIS HAS DECREASED THE SNOW OVER WESTERN WYOMING. LIGHT SNOW WILL CONTINUE IN THE MOUNTAINS WITH LITTLE ADDITIONAL ACCUMULATION IN THE VALLEYS. $$ WYZ002>004-008-009-112245- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070112T0600Z/ ABSAROKA MOUNTAINS-CODY FOOTHILLS-NORTH BIG HORN BASIN- BIGHORN MOUNTAINS WEST-BIGHORN MOUNTAINS SOUTHEAST- INCLUDING THE CITIES OF...CODY...MEETEETSE...POWELL...LOVELL... GREYBULL...BASIN 232 PM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELED THE SNOW ADVISORY. THE STORM THAT BROUGHT SNOWFALL TO WESTERN AND NORTHERN WYOMING HAS MOVED SOUTH AND EAST. THIS HAS DECREASED THE SNOW OVER NORTHERN AND WESTERN WYOMING. LIGHT SNOW WILL CONTINUE IN THE MOUNTAINS WITH LITTLE ADDITIONAL ACCUMULATION IN THE VALLEYS. $$ WYZ027-112245- /O.CAN.KRIW.SN.Y.0003.070111T2200Z-070113T0000Z/ SOUTH LINCOLN COUNTY- INCLUDING THE CITIES OF...KEMMERER...COKEVILLE 232 PM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELED THE SNOW ADVISORY. THE STORM THAT BROUGHT SNOWFALL TO WESTERN WYOMING HAS MOVED SOUTH AND EAST. THIS HAS DECREASED THE SNOW OVER WESTERN WYOMING. LIGHT SNOW WILL CONTINUE IN THE MOUNTAINS WITH LITTLE ADDITIONAL ACCUMULATION IN THE VALLEYS. $$ WYZ028>030-120545- /O.UPG.KRIW.SN.Y.0003.070111T2200Z-070113T0000Z/ /O.EXB.KRIW.WS.W.0002.070111T2200Z-070113T0000Z/ ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...ROCK SPRINGS...GREEN RIVER...WAMSUTTER 232 PM MST THU JAN 11 2007 ...WINTER STORM WARNING IN EFFECT UNTIL 5 PM MST FRIDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A WINTER STORM WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST FRIDAY. THE SNOW ADVISORY IS NO LONGER IN EFFECT. SNOW WILL INCREASE ACROSS SWEETWATER COUNTY THIS EVENING ALONG WITH STRONG NORTHEAST WINDS. SIGNIFICANT BLOWING AND DRIFTING SNOW IS EXPECTED ALONG INTERSTATE 80 AND ALONG HIGHWAY 28. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED WITH LOCALLY HIGHER AMOUNTS NEAR THE MOUNTAINS. THE SNOW AND WIND IS EXPECTED TO CONTINUE FRIDAY...THEN TAPPER OFF IN THE AFTERNOON. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ019-120545- /O.EXT.KRIW.WS.W.0002.070111T2200Z-070113T0000Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 232 PM MST THU JAN 11 2007 ...WINTER STORM WARNING NOW IN EFFECT UNTIL 5 PM MST FRIDAY... THE WINTER STORM WARNING IS NOW IN EFFECT UNTIL 5 PM MST FRIDAY. WIDESPREAD SNOW WAS OCCURRING OVER SOUTHERN FREMONT AND NATRONA COUNTIES TODAY. SNOWFALL HAS RANGED FROM 3 TO 8 INCHES WITH LOCALLY HIGHER AMOUNTS NEAR THE MOUNTAINS. GUSTY NORTHEAST WINDS OF 15 TO 25 MPH WAS CREATING VERY LOW VISIBILITY IN OPEN AREAS...ALONG WITH BLOWING AND DRIFTING SNOW. SNOW WILL CONTINUE OVER THE AREA TONIGHT AND FRIDAY. TOTAL SNOWFALL BY FRIDAY AFTERNOON WILL RANGE FROM 6 TO 12 INCHES ACROSS SOUTHERN NATRONA AND FREMONT COUNTIES. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ020-022-120545- /O.CON.KRIW.WS.W.0002.000000T0000Z-070112T1200Z/ NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITY OF...CASPER 232 PM MST THU JAN 11 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. WIDESPREAD SNOW WAS OCCURRING OVER NATRONA COUNTY TODAY. SNOWFALL HAS RANGED FROM 3 TO 8 INCHES WITH LOCALLY HIGHER AMOUNTS AROUND CASPER MOUNTAIN. GUSTY NORTHEAST WIND OF 15 TO 25 MPH WAS CREATING VERY LOW VISIBILITY IN OPEN AREAS...ALONG WITH BLOWING AND DRIFTING SNOW. SNOW WILL CONTINUE OVER THE AREA TONIGHT. TOTAL SNOWFALL BY FRIDAY MORNING WILL RANGE FROM 6 TO 12 INCHES ACROSS NATRONA COUNTY. SNOWFALL OVER CASPER MOUNTAIN WILL RANGE FROM 10 TO 15 INCHES. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ010-011-120545- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T0600Z/ NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- INCLUDING THE CITIES OF...BUFFALO...KAYCEE 232 PM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 11 PM MST THIS EVENING. SNOW WILL CONTINUE ACROSS THE AREA THIS EVENING. A TOTAL OF 4 TO 6 INCHES IS EXPECTED ALONG INTERSTATE 25 AND 90 WITH UP TO 8 INCHES IN THE FOOTHILLS AROUND BUFFALO AND LAKE DE SMET. INTERSTATES 25 AND 90 AND AREA ROADS WILL LIKELY BE EXTREMELY SLICK AND ICY. NORTH WINDS AT 15 TO 30 MPH WILL ALSO CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY. 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. $$
000 WWUS45 KRIW 120403 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 903 PM MST THU JAN 11 2007 ...ARCTIC COLD FRONT AND POWERFUL WINTER STORM TO BRING SNOW ACROSS SOUTHERN AND CENTRAL WYOMING OVERNIGHT THROUGH FRIDAY... .A MOIST SOUTHWEST FLOW AHEAD OF A POWERFUL STORM SYSTEM WILL CONTINUE TO PRODUCE WIDESPREAD SNOWFALL ACROSS SOUTH AND CENTRAL WYOMING OVERNIGHT THROUGH FRIDAY. NORTH TO NORTHEAST WIND AT 15 TO 25 MPH WILL CAUSE AREAS OF BLOWING SNOW AND LIMITED VISIBILITY. THE HEAVIEST SNOWFALL IS EXPECTED ACROSS SWEETWATER COUNTY AND SOUTHERN NATRONA COUNTY. WYZ010-011-120515- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070112T0600Z/ NORTHEAST JOHNSON COUNTY-SOUTHEAST JOHNSON COUNTY- INCLUDING THE CITIES OF...BUFFALO...KAYCEE 903 PM MST THU JAN 11 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE SNOW ADVISORY. OCCASIONAL LIGHT SNOW OR FLURRIES WILL INTRUDE INTO SOUTHEAST JOHNSON COUNTY OVERNIGHT WITH AN INCH OR LESS OF ADDITIONAL ACCUMULATION. $$ WYZ020-022-121015- /O.CON.KRIW.WS.W.0002.000000T0000Z-070112T1200Z/ NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITY OF...CASPER 903 PM MST THU JAN 11 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. SNOWFALL AROUND THE CASPER AREA HAS RANGED FROM 6 TO 12 INCHES TODAY. LIGHT AND OCCASIONALLY MODERATE SNOWFALL WILL CONTINUE OVERNIGHT WITH 2 TO 4 INCHES OF ADDITIONAL SNOWFALL EXPECTED OVERNIGHT. STORM TOTAL SNOWFALL BY EARLY FRIDAY MORNING WILL RANGE FROM 8 TO 16 INCHES. ADDITIONALLY...NORTHEAST WIND AT 15 TO 25 MPH WILL CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ019-028>030-121015- /O.CON.KRIW.WS.W.0002.000000T0000Z-070113T0000Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...JEFFREY CITY...ROCK SPRINGS... GREEN RIVER...WAMSUTTER 903 PM MST THU JAN 11 2007 ...WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY... A WINTER STORM WARNING REMAINS IN EFFECT UNTIL 5 PM MST FRIDAY. LIGHT TO MODERATE SNOW WILL CONTINUE ACROSS SWEETWATER COUNTY OVERNIGHT ALONG WITH STRONG NORTHEAST WINDS. SIGNIFICANT BLOWING AND DRIFTING SNOW WITH LIMITED VISIBILITY WILL BE ENCOUNTERED ALONG SECTIONS OF INTERSTATE 80 AND ALSO OVER THE SOUTH PASS AND BEAVER RIM AREAS. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED WITH LOCALLY HIGHER AMOUNTS NEAR THE MOUNTAINS SOUTH OF INTERSTATE 80. THE SNOW AND WIND IS EXPECTED TO CONTINUE FRIDAY...THEN TAPPER OFF IN THE AFTERNOON. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ WYZ005-007-121015- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ SOUTHWEST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- INCLUDING THE CITY OF...THERMOPOLIS 903 PM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. LIGHT SNOW WILL CONTINUE ACROSS HOT SPRINGS COUNTY OVERNIGHT. ADDITIONAL SNOWFALL OF 1 TO 3 INCHES IS EXPECTED AROUND THERMOPOLIS WITH HIGHER AMOUNTS IN THE OWL CREEK AND BRIDGER MOUNTAINS. NORTH WIND AT 10 TO 20 MPH WILL CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY NEAR AND THROUGH THE WIND RIVER CANYON. 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. $$ WYZ015>018-121015- /O.CON.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ WIND RIVER MOUNTAINS EAST-UPPER WIND RIVER BASIN-WIND RIVER BASIN- LANDER FOOTHILLS- INCLUDING THE CITIES OF...DUBOIS...RIVERTON...SHOSHONI...LANDER 903 PM MST THU JAN 11 2007 ...SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY... A SNOW ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST FRIDAY. SNOW WILL CONTINUE ACROSS THE WIND RIVER BASIN TONIGHT. ADDITIONAL SNOWFALL OF 1 TO 3 INCHES IS EXPECTED BY MORNING...WITH LOCALLY HIGHER AMOUNTS ALONG HIGHWAYS 135 AND 136 FROM SAND DRAW TO GAS HILLS. NORTH WINDS AT 10 TO 20 MPH WILL ALSO CAUSE AREAS OF BLOWING AND DRIFTING SNOW AND LIMITED VISIBILITY OVER OPEN AREAS. A SNOW ADVISORY MEANS THAT PERIODS OF SNOW WILL CAUSE PRIMARILY TRAVEL DIFFICULTIES. BE PREPARED FOR SNOW COVERED ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE DRIVING. $$ AEM
000 WWUS45 KRIW 120944 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 244 AM MST FRI JAN 12 2007 ...ARCTIC COLD FRONT AND POWERFUL WINTER STORM TO BRING SNOW ACROSS SOUTHERN AND CENTRAL WYOMING THROUGH TODAY... .A MOIST SOUTHWEST FLOW AHEAD OF A POWERFUL STORM SYSTEM WILL CONTINUE TO PRODUCE WIDESPREAD SNOWFALL ACROSS SOUTH AND CENTRAL WYOMING OVERNIGHT THROUGH FRIDAY. NORTH TO NORTHEAST WIND AT 15 TO 25 MPH WILL CAUSE AREAS OF BLOWING SNOW AND LIMITED VISIBILITY. THE HEAVIEST SNOWFALL IS EXPECTED ACROSS SWEETWATER COUNTY AND SOUTHERN NATRONA COUNTY. WYZ020-022-121045- /O.CAN.KRIW.WS.W.0002.000000T0000Z-070112T1200Z/ NATRONA COUNTY LOWER ELEVATIONS-CASPER MOUNTAIN- INCLUDING THE CITY OF...CASPER 244 AM MST FRI JAN 12 2007 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER STORM WARNING. HEAVY SNOWFALLS HAVE TAPERED OFF THIS MORNING TO BELOW WARNING CRITERIA. LINGERING SNOW SHOWERS WILL STILL BE FOUND THIS MORNING...THOUGH ONLY LIGHT ACCUMULATIONS WILL ACCOMPANY THE REMAINDER OF THIS SYSTEM. TRAVELERS ARE STILL URGED TO USE EXTRA CAUTION REACHING THEIR DESTINATIONS THIS MORNING...AS PREVIOUSLY FALLEN SNOW WILL CAUSE SLICK ROADWAYS. $$ WYZ005-007-015>018-121045- /O.CAN.KRIW.SN.Y.0003.000000T0000Z-070112T1200Z/ SOUTHWEST BIG HORN BASIN-OWL CREEK AND BRIDGER MOUNTAINS- WIND RIVER MOUNTAINS EAST-UPPER WIND RIVER BASIN-WIND RIVER BASIN- LANDER FOOTHILLS- INCLUDING THE CITIES OF...THERMOPOLIS...DUBOIS...RIVERTON... SHOSHONI...LANDER 244 AM MST FRI JAN 12 2007 ...SNOW ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE SNOW ADVISORY. SNOWFALL HAS DECREASED IN INTENSITY THIS MORNING...WITH ONLY LIGHT ACCUMULATIONS EXPECTED THROUGH THIS MORNING. ROADWAYS WILL STILL BE SLICK IN SPOTS FROM PREVIOUSLY FALLEN SNOW...TRAVELERS WILL WANT TO USE ADDED CAUTION THIS MORNING. $$ WYZ019-028>030-121800- /O.CON.KRIW.WS.W.0002.000000T0000Z-070113T0000Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...JEFFREY CITY...ROCK SPRINGS... GREEN RIVER...WAMSUTTER 244 AM MST FRI JAN 12 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. LIGHT TO MODERATE SNOW WILL CONTINUE ACROSS SWEETWATER COUNTY OVERNIGHT ALONG WITH STRONG NORTHEAST WINDS. SIGNIFICANT BLOWING AND DRIFTING SNOW WITH LIMITED VISIBILITY WILL BE ENCOUNTERED ALONG SECTIONS OF INTERSTATE 80 AND ALSO OVER THE SOUTH PASS AND BEAVER RIM AREAS. SNOWFALL OF 4 TO 8 INCHES IS EXPECTED WITH LOCALLY HIGHER AMOUNTS NEAR THE MOUNTAINS SOUTH OF INTERSTATE 80. THE SNOW AND WIND IS EXPECTED TO CONTINUE FRIDAY...THEN TAPPER OFF IN THE AFTERNOON. A WINTER STORM WARNING MEANS SIGNIFICANT AMOUNTS OF SNOW... SLEET...AND ICE ARE EXPECTED OR OCCURRING. STRONG WINDS ARE ALSO POSSIBLE. THIS WILL MAKE TRAVEL VERY HAZARDOUS OR IMPOSSIBLE. $$ BRANHAM
000 WWUS45 KRIW 121551 WSWRIW URGENT - WINTER WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 851 AM MST FRI JAN 12 2007 ...THE WINTER STORM WARNING FOR SWEETWATER COUNTY AND THE GREEN MOUNTAINS HAS BEEN CANCELLED... .THE WINTER STORM WARNING FOR SWEETWATER COUNTY AND THE GREEN MOUNTAINS HAS BEEN CANCELLED. LIGHT SNOW CONTINUES TO FALL ACROSS SWEETWATER COUNTY...SOUTHERN FREMONT COUNTY AND SOUTHERN NATRONA COUNTY. SNOWFALL ACCUMULATIONS HAVE BEEN LIGHT SINCE THE AIR HAS BECOME VERY COLD. MOST AREAS HAVE RECEIVED LESS THAN AN INCH OF SNOW SINCE EARLY MORNING. LIGHT SNOW WILL CONTINUE TODAY AND INTO TONIGHT WITH ACCUMULATIONS OF 1 TO 2 INCHES. WYZ019-028>030-121700- /O.CAN.KRIW.WS.W.0002.000000T0000Z-070113T0000Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- ROCK SPRINGS AND GREEN RIVER-FLAMING GORGE-EAST SWEETWATER COUNTY- INCLUDING THE CITIES OF...JEFFREY CITY...ROCK SPRINGS... GREEN RIVER...WAMSUTTER 851 AM MST FRI JAN 12 2007 ...WINTER STORM WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE WINTER STORM WARNING. THE WINTER STORM WARNING FOR SWEETWATER COUNTY AND THE GREEN MOUNTAINS HAS BEEN CANCELLED. LIGHT SNOW CONTINUES TO FALL ACROSS SWEETWATER COUNTY...SOUTHERN FREMONT COUNTY AND SOUTHERN NATRONA COUNTY. SNOWFALL ACCUMULATIONS HAVE BEEN LIGHT SINCE THE AIR HAS BECOME VERY COLD. MOST AREAS HAVE RECEIVED LESS THAN AN INCH OF SNOW SINCE EARLY MORNING. LIGHT SNOW WILL CONTINUE TODAY AND INTO TONIGHT WITH ACCUMULATIONS OF 1 TO 2 INCHES. $$
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 Jan 11, 6:51 AM MST, 1 hour 29 minutes earlier.
Area forecast discussion, Jan 11, 6:51 AM MST, 1 hour 29 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE RIVERTON WY 651 AM MST THU JAN 11 2007 .UPDATE...DUE TO SNOWFALL REPORTS AND AREA OF MODERATE SNOW ACROSS FREMONT AND NATRONA COUNTIES...HAVE STARTED THE SNOW ADVISORY FOR THESE AREAS NOW INSTEAD OF NOONTIME. ALL OTHER HIGHLITES ARE THE SAME FOR NOW. .SHORT TERM...TODAY THROUGH SATURDAY NIGHT COLD FRONT PUSHING THROUGH THE STATE THIS MORNING WITH SNOW OVER THE NORTHERN PART OF OUR FORECAST AREA. MODELS CONTINUE TO HAVE A HARD TIME WITH THIS MAJOR WEATHER SYSTEM. NEWEST RUN DROPS THE UPPER LOW FURTHER TO THE WEST AND SOUTH AND SLOWED THE FRONT DOWN A BIT FURTHER. LOOKING AT QPF AMOUNTS WITH THIS NEW RUN HAVE DECIDED TO GO AHEAD AND JUST ISSUE SNOW ADVISORIES OVER THE AREA AS THE FRONT HELPS TO PRODUCE LIGHT SNOW OVER THE AREA. WARM ROADS OVER THE AREA WILL LEAD TO VERY SLICK ROADS AS THE COLD AIR WITH THE FRONT AND SNOW BEHIND IT COMBINE. LOCAL HIGHER AMOUNTS COULD STILL OCCUR AS FRONT STALLS ACROSS THE SOUTHERN ZONES. FOR NOW THINK IT IS BEST TO GO WITH THE ADVISORIES WITH THE MAIN THREAT BEING VERY SLICK ROADS AND BLOWING AND DRIFTING SNOW. SINCE THE FRONT IS A LITTLE SLOWER WENT AHEAD AND KEPT TEMPERATURES A LITTLE HIGHER OVER THE SOUTH TODAY. ONCE FRONT MOVES THROUGH WE WILL GET VERY COLD WITH TEMPERATURES WELL BELOW ZERO FOR MOST LOCATIONS FRIDAY MORNING WITH HIGHS ONLY IN THE SINGLE DIGITS. WINDS WILL PICK UP OVER THE SOUTHERN ZONES AFTER THE FRONT MOVES THROUGH SO WILL HAVE TO WATCH THIS AREA FOR LOW VISIBILITIES IN BLOWING AND DRIFTING SNOW. CURRENT MODEL RUNS SHOW THE UPPER LOW TO START TO KICK OUT SATURDAY WHICH WILL DECREASE CHANCES OF SNOW OVER THE WESTERN ZONES. WE WILL SEE HOW THE MODELS DO ON THE NEXT RUN TO GET A BETTER IDEAL ON ITS EXACT TRACK. .LONG TERM...SUNDAY THROUGH THRUSDAY IT NOW APPEARS THAT THE UPPER TROUGH WILL LIFT INTO EASTERN COLORADO SUNDAY AND OUT INTO THE PLAINS SUNDAY NIGHT. HAVE KEPT LOW PRECIP CHANCE OVER THE AREA AS UNCERTAINTY ABOUNDS WITH THIS TROUGH. MONDAY NOW LOOKS DRY AND COLD. THEN UPPER RIDGE AXIS CONTINUES TO MOVE INTO THE WESTERN U.S. TUE INTO TUESDAY NIGHT. THUS DRY WEATHER EXPECTED. A POSSIBLE SHORTWAVE PASSES THROUGH THE NORTHERN ROCKIES WED. WILL HAVE TO WATCH THIS SYSTEM FOR MORE IMPACT TO OUR AREA AS IT MAY END UP DIGGING MORE THAN GFS MODEL THINKS. FOR NOW KEPT WED MAINLY DRY WITH POSSIBLE FLURRIES IN THE NORTH MOUNTAINS. DRY FOR NEXT THURSDAY. TEMPS WILL BE THE BIGGER ISSUE IN EXTENDED. COLD SUNDAY AND MONDAY THEN BEGIN MODERATION OF HIGHS TUE THROUGH THURS. HAVE KEPT SNOW COVERED BASINS IN THE INVERSION TUE THROUGH THU WITH SLIGHT WARMING. IN MIXED AREAS AND HIGH COUNTRY TEMPS WILL MODERATE QUICKER. KEPT HIGHS WELL BELOW GFSX GUIDANCE NUMBERS FOR NOW. && .RIW WATCHES/WARNINGS/ADVISORIES... SNOW ADVISORY IN EFFECT THROUGH 5 PM THIS EVENING FOR WYOMING ZONES..1..12..13. SNOW ADVISORY IN EFFECT THROUGH 11 PM TONIGHT FOR WYOMING ZONES..2>4..8>11. SNOW ADVISORY IN EFFECT 5 AM THIS MORNING THROUGH 5 AM FRIDAY FOR WYOMING ZONES..5>7. SNOW ADVISORY IN EFFECT 5 AM THIS MORNING THROUGH 5 PM FRIDAY FOR WYOMING ZONES..14..15..23>26. SNOW ADVISORY IN EFFECT TODAY THROUGH 5 PM FRIDAY FOR WYOMING ZONES..16>20..22. SNOW ADVISORY IN EFFECT 3 PM THIS AFTERNOON THROUGH 5 PM FRIDAY FOR WYOMING ZONES..27>30. && SHORT TERM...DR LONG TERM...RIW
Hazardous weather outlook, Jan 11, 6:56 AM MST, 1 hour 24 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RIVERTON WY 656 AM MST THU JAN 11 2007 WYZ001>020-022>030-121300- 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- 656 AM MST THU JAN 11 2007 ...SNOW ADVISORY FOR THE NORTHERN PART OF THE STATE TODAY... ...SNOW ADVISORY FOR CENTRAL WYOMING TODAY THROUGH FRIDAY... ...SNOW ADVISORY FOR SOUTHERN WYOMING THIS AFTERNOON THROUGH FRIDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN AND CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT A STRONG ARCTIC COLD FRONT WILL MOVE ACROSS CENTRAL AND SOUTHERN WYOMING TODAY. PERIODS OF SNOW WILL DEVELOP ACROSS CENTRAL WYOMING LATE THIS MORNING AND THEN SPREAD ACROSS SOUTHERN WYOMING THIS AFTERNOON. SNOWFALL AMOUNTS OF 3 TO 6 INCHES ACROSS THE LOWER ELEVATIONS WITH 6 TO 12 INCHES OVER THE MOUNTAINS WILL BE COMMON BEFORE THIS WEATHER SYSTEM MOVES OUT OF THE AREA. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY COLD ARCTIC AIRMASS WILL CONTINUE TO PUSH SOUTH ACROSS THE STATE FRIDAY SPREADING SNOW ACROSS MOST OF CENTRAL AND SOUTHERN WYOMING. EXPECT TOTAL SNOWFALL ACCUMULATIONS OF 3 TO 6 INCHES IN THE LOWER ELEVATIONS AND 6 TO 12 INCHES IN THE HIGHER TERRAIN. STRONG NORTHEAST WINDS WILL DEVELOP BEHIND THIS COLD FRONT... ESPECIALLY OVER SOUTH PASS...THE RED DESERT...THE INTERSTATE 80 CORRIDOR AND ACROSS THE SOUTHWEST CORNER OF WYOMING. THESE STRONG NORTHEAST WINDS COMBINED WITH SNOWFALL MAY MAKE TRAVEL TREACHEROUS FRIDAY. WELL BELOW AVERAGE TEMPERATURES WILL OCCUR FRIDAY THROUGH THE WEEKEND AS THE ARCTIC AIR BECOMES ENTRENCHED OVER THE REGION. OVERNIGHT LOWS WILL LIKELY PLUMMET WELL BELOW ZERO IN MANY LOCALES SATURDAY AND SUNDAY MORNINGS. EVEN NEXT MONDAY LOOKS TO BE QUITE COLD NOW. OVERNIGHT LOWS SATURDAY AND SUNDAY MORNING WILL LIKELY RANGE FROM -10 TO -20 BELOW ZERO IN THE EAST AND MOUNTAIN LOCATIONS WITH -25 TO -35 BELOW ZERO ACROSS THE FAR WEST VALLEYS AND BASINS. ANYONE WITH OUTDOOR PLANS TODAY INTO THE COMING WEEKEND SHOULD BE PREPARED FOR HARSH WINTER WEATHER CONDITIONS. SPOTTER INFORMATION STATEMENT... SPOTTERS ARE ENCOURAGED TO REPORT SNOWFALL AMOUNTS TODAY THROUGH FRIDAY. THANK YOU. TRIW
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.