Alert archive / Wyoming / High Wind Warnings in 2011
High Wind Warning 28, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Nov 30, 2011, 2:20 PM MST for 6 counties in Wyoming. It took effect at Nov 30, 2011, 6:00 PM MST. It was in force for 15 hr. 20 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 30, 2011, 2:20 PM MST (21:20 UTC)
- In effect from
- Nov 30, 2011, 6:00 PM MST
- Expired
- Dec 1, 2011, 9:02 AM MST
- In force
- 15 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Hot Springs County, WY, Lincoln County, WY, Natrona County, WY, Sublette County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 50 km from the middle of the area, began a volume at 21:25 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 30, 8:14 PM MST | SNOW 1 | 16 Ne Dubois, WY | CASTLE CREEK SNOTEL |
| Nov 30, 8:14 PM MST | SNOW 1 | 40 W Thermopolis, WY | OWL CREEK SNOTEL |
| Nov 30, 8:18 PM MST | SNOW 2 | 21 Sw Barnum, WY | GRAVE SPRING SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 1 | 7 Nw Atlantic City, WY | SOUTH PASS SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 2 | 18 W Lander, WY | HOBBS PARK SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 2 | 6 Wsw Dubois, WY | LITTLE WARM SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 3 | 12 Sw Lander, WY | TOWNSEND CREEK SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 3 | 26 Nw Lander, WY | ST. LAWRENCE ALT SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 3 | 8 S Casper, WY | CASPER MOUNTAIN SNOTEL |
| Nov 30, 8:19 PM MST | SNOW 5 | 14 W Crowheart, WY | COLD SPRINGS SNOTEL |
| Nov 30, 8:20 PM MST | SNOW 1 | 22 Sse Casper, WY | RENO HILL SNOTEL |
| Nov 30, 8:21 PM MST | SNOW 0.5 | 14 Sse Thermopolis, WY | |
| Nov 30, 8:21 PM MST | SNOW 1.5 | Star Valley Ranch, WY | |
| Nov 30, 8:24 PM MST | SNOW 1.5 | Fort Washakie, WY | |
| Nov 30, 8:24 PM MST | SNOW 2 | Thermopolis, WY | |
| Nov 30, 8:25 PM MST | SNOW 1.5 | 1 S Lander, WY | LANDER AIRPORT |
| Nov 30, 8:25 PM MST | SNOW 2.8 | Hudson, WY | |
| Nov 30, 8:26 PM MST | SNOW 3.5 | 10 S Lander, WY | RED CANYON |
| Nov 30, 8:26 PM MST | SNOW 3.8 | 5 Wsw Lander, WY | |
| Nov 30, 8:27 PM MST | SNOW 1 | Casper, WY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Riverton, WY (KRIW), launched 12:00Z, 9.3 hours before the alert went out and 54 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
- 2014 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -60 m²/s²
- 0-3 km storm-relative helicity
- 122 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
719 WWUS75 KRIW 302120 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 220 PM MST WED NOV 30 2011 ...STRONG TO POTENTIALLY DAMAGING DOWNSLOPE WINDS EXPECTED TONIGHT THROUGH THURSDAY MORNING... .A STRONG CANADIAN COLD FRONT PUSHING SOUTH ACROSS THE AREA TONIGHT WILL COMBINE WITH STRONG WINDS AT MOUNTAIN TOP LEVEL TO PRODUCE STRONG TO POTENTIALLY DAMAGING WIND ALONG AND SOUTH OF THE OWL CREEK MOUNTAINS AND ALONG AND SOUTHWEST OF THE WIND RIVER MOUNTAINS. A FEW AREAS THAT WILL LIKELY EXPERIENCE THESE HIGH WINDS INCLUDE PAVILLION...BOYSEN RESEVOIR...SHOSHONI...PINEDALE...BIG SANDY AND AROUND FARSON. WYZ007-017-010700- /O.UPG.KRIW.HW.A.0021.111201T0100Z-111201T1200Z/ /O.NEW.KRIW.HW.W.0028.111201T0100Z-111201T1200Z/ OWL CREEK AND BRIDGER MOUNTAINS-WIND RIVER BASIN- INCLUDING THE CITIES OF...RIVERTON...SHOSHONI 220 PM MST WED NOV 30 2011 ...HIGH WIND WARNING IN EFFECT FROM 6 PM THIS EVENING TO 5 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 6 PM THIS EVENING TO 5 AM MST THURSDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * SUMMARY AND TIMING...STRONG NORTH WINDS WILL DEVELOP AFTER 6 PM THIS EVENING IN AND JUST SOUTH OF THE OWL CREEK MOUNTAINS AND PEAK AROUND MIDNIGHT INTO THE EARLY MORNING HOURS BEFORE GRADUALLY DIMINISHING. THE STRONGEST WINDS WILL LIKELY STAY NORTH OF RIVERTON BUT GUSTS OVER 50 MPH ARE STILL POSSIBLE IN THE CENTRAL PART OF THE WIND RIVER BASIN. * WIND...NORTH WIND 35 TO 45 MPH WITH GUSTS OF 60 TO 70 MPH. LOCALLY HIGHER GUSTS ARE POSSIBLE ALONG THE SOUTH SLOPE OF THE OWL CREEK MOUNTAINS...ESPECIALLY NEAR THE MOUTH OF ANY CANYONS. * IMPACTS...ANYONE WITH INTERESTS ON BOYSEN RESERVOIR SHOULD TAKE SHELTER ONSHORE AS THIS STRONG COLD FRONT BLASTS SOUTH ACROSS THE AREA THROUGH TONIGHT. RESIDENTS IN AND NEAR THE OWL CREEKS...INCLUDING PAVILLION AND SHOSHONI SHOULD SECURE LOOSE OUTDOOR ITEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ WYZ025-026-010700- /O.UPG.KRIW.HW.A.0021.111201T0300Z-111201T1800Z/ /O.NEW.KRIW.HW.W.0028.111201T0300Z-111201T1800Z/ UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...PINEDALE...LA BARGE...BIG PINEY... FARSON 220 PM MST WED NOV 30 2011 ...HIGH WIND WARNING IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO 11 AM MST THURSDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * SUMMARY AND TIMING...STRONG DOWNSLOPE WINDS WILL DEVELOP AFTER 8 PM THIS EVENING AND CONTINUING THROUGH THURSDAY MORNING. THE STRONGEST WINDS WILL LIKELY OCCUR FROM AROUND MIDNIGHT INTO THE EARLY MORNING HOURS. * WIND...NORTHEAST WIND 40 TO 50 MPH WITH GUSTS OF 60 TO 65 MPH. LOCALLY STRONGER GUSTS ARE EXPECTED DOWNWIND OF ANY CANYON OPENINGS. * IMPACTS...THESE STRONG WINDS WILL LIKELY IMPACT AREAS ALONG AND EAST OF HIGHWAY 191 FROM FARSON AND EDEN TO PINEDALE...AND HIGHWAY 28 EAST OF FARSON. DANGEROUS CROSSWIND WILL BE LIKELY ALONG THESE ROUTES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ SKRBAC
3 follow-up statements
086 WWUS75 KRIW 010253 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 753 PM MST WED NOV 30 2011 ...STRONG TO POTENTIALLY DAMAGING DOWNSLOPE WINDS EXPECTED TONIGHT THROUGH THURSDAY MORNING... .A STRONG CANADIAN COLD FRONT PUSHING SOUTH ACROSS THE AREA TONIGHT WILL COMBINE WITH STRONG WINDS AT MOUNTAIN TOP LEVEL TO PRODUCE STRONG TO POTENTIALLY DAMAGING WIND ALONG AND SOUTH OF THE OWL CREEK MOUNTAINS AND ALONG AND SOUTHWEST OF THE WIND RIVER MOUNTAINS. A FEW AREAS THAT WILL LIKELY EXPERIENCE THESE HIGH WINDS INCLUDE PAVILLION...BOYSEN RESEVOIR...SHOSHONI...PINEDALE... BIG SANDY AND AROUND FARSON. WYZ025-026-011100- /O.CON.KRIW.HW.W.0028.111201T0300Z-111201T1800Z/ UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...PINEDALE...LA BARGE...BIG PINEY... FARSON 753 PM MST WED NOV 30 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 AM MST THURSDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 AM MST THURSDAY. * SUMMARY AND TIMING...DOWNSLOPE NORTHEAST WIND WILL INCREASE LATE THIS EVENING. THE STRONGEST WINDS WILL LIKELY OCCUR FROM AROUND MIDNIGHT INTO THE EARLY MORNING HOURS. * WIND...NORTHEAST WIND 40 TO 50 MPH WITH GUSTS OF 60 TO 65 MPH. LOCALLY STRONGER GUSTS ARE EXPECTED DOWNWIND OF ANY CANYON OPENINGS. * IMPACTS...THESE STRONG WINDS WILL LIKELY IMPACT AREAS ALONG AND EAST OF HIGHWAY 191 FROM FARSON AND EDEN TO PINEDALE...AND HIGHWAY 28 EAST OF FARSON. DANGEROUS CROSSWIND WILL BE LIKELY ALONG THESE ROUTES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ WYZ007-017-011100- /O.CON.KRIW.HW.W.0028.000000T0000Z-111201T1200Z/ OWL CREEK AND BRIDGER MOUNTAINS-WIND RIVER BASIN- INCLUDING THE CITIES OF...RIVERTON...SHOSHONI 753 PM MST WED NOV 30 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 AM MST THURSDAY. * SUMMARY AND TIMING...AFTER A BRIEF LULL...A SECOND SURGE OF STRONG NORTHERLY WINDS WILL PUSH THROUGH THE WIND RIVER CANYON INTO THE NORTHERN WIND RIVER BASIN BETWEEN 9 PM AND 10 PM. THE STRONGEST WINDS ARE EXPECTED BETWEEN 11 PM AND 2 AM WITH WINDS GRADUALLY SUBSIDING EARLY THURSDAY MORNING. * WIND...NORTH WIND 35 TO 45 MPH WITH GUSTS OF 60 TO 70 MPH. LOCALLY HIGHER GUSTS ARE POSSIBLE ALONG THE SOUTH SLOPE OF THE OWL CREEK MOUNTAINS...ESPECIALLY NEAR THE MOUTH OF ANY CANYONS. * IMPACTS...ANYONE WITH INTERESTS ON BOYSEN RESERVOIR SHOULD TAKE SHELTER ONSHORE AS THIS STRONG COLD FRONT BLASTS SOUTH ACROSS THE AREA THROUGH TONIGHT. RESIDENTS IN AND NEAR THE OWL CREEKS...INCLUDING PAVILLION AND SHOSHONI SHOULD SECURE LOOSE OUTDOOR ITEMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ AEM
337 WWUS75 KRIW 010951 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 251 AM MST THU DEC 1 2011 ...STRONG TO POTENTIALLY DAMAGING DOWNSLOPE WINDS EXPECTED THROUGH THIS MORNING... .A STRONG CANADIAN COLD FRONT PUSHING SOUTH ACROSS THE AREA WILL COMBINE WITH STRONG WINDS AT MOUNTAIN TOP LEVEL TO PRODUCE STRONG TO POTENTIALLY DAMAGING WIND ALONG THE SOUTHWEST SLOPES OF THE WIND RIVER MOUNTAINS. A FEW AREAS THAT WILL LIKELY EXPERIENCE THESE HIGH WINDS INCLUDE PINEDALE...BIG SANDY AND AROUND FARSON. WYZ007-017-011100- /O.CAN.KRIW.HW.W.0028.000000T0000Z-111201T1200Z/ OWL CREEK AND BRIDGER MOUNTAINS-WIND RIVER BASIN- INCLUDING THE CITIES OF...RIVERTON...SHOSHONI 251 AM MST THU DEC 1 2011 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE HIGH WIND WARNING. WIND SPEEDS HAVE DECREASED EARLY THIS MORNING AND THE THREAT FOR WIDESPREAD HIGH WINDS HAS ENDED. A NORTH WIND OF 15 TO 25 MPH WITH GUSTS AROUND 30 MPH MAY STILL OCCUR AROUND BOYSEN RESERVOIR AND OVER NORTHERN FREMONT COUNTY. WIND SPEEDS IN THE ADJACENT MOUNTAINS WILL RANGE FROM 20 TO 35 MPH THROUGH THE MORNING HOURS. $$ WYZ025-026-011800- /O.CON.KRIW.HW.W.0028.000000T0000Z-111201T1800Z/ UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...PINEDALE...LA BARGE...BIG PINEY... FARSON 251 AM MST THU DEC 1 2011 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING. * SUMMARY AND TIMING...DOWNSLOPE NORTHEAST WIND WILL OCCUR AT TIMES THIS MORNING. THE STRONG WIND GUSTS WILL VARY AT TIMES WITH LULLS IN STRONG WIND SPEEDS. * WIND...NORTHEAST WIND 40 TO 50 MPH WITH GUSTS OF 60 TO 65 MPH. LOCALLY STRONGER GUSTS ARE EXPECTED DOWNWIND OF ANY CANYON OPENINGS. * IMPACTS...THESE STRONG WINDS WILL LIKELY IMPACT AREAS ALONG AND EAST OF HIGHWAY 191 FROM FARSON AND EDEN TO PINEDALE...AND HIGHWAY 28 EAST OF FARSON. DANGEROUS CROSSWIND WILL BE LIKELY ALONG THESE ROUTES. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ AR
969 WWUS75 KRIW 011602 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 902 AM MST THU DEC 1 2011 WYZ025-026-011715- /O.CAN.KRIW.HW.W.0028.000000T0000Z-111201T1800Z/ UPPER GREEN RIVER BASIN FOOTHILLS-UPPER GREEN RIVER BASIN- INCLUDING THE CITIES OF...PINEDALE...LA BARGE...BIG PINEY... FARSON 902 AM MST THU DEC 1 2011 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE HIGH WIND WARNING. HIGH WINDS ARE NO LONGER EXPECTED ACROSS THE AREA. THEREFORE...THE HIGH WIND WARNING HAS BEEN CANCELLED. $$ SKRBAC
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 9:19 PM MST | High Wind Watch | RIW | Fremont, Hot Springs, Lincoln, Natrona, Sublette, Sweetwater | 17 hr |
| Nov 30, 3:00 AM MST | Winter Weather Advisory | RIW | Big Horn, Fremont, Johnson, Natrona, Park, Washakie | 29 hr |
| Nov 30, 2:53 PM MST | Blizzard Warning | RIW | Fremont, Sublette | 20 hr |
| Nov 30, 2:53 PM MST | Winter Storm Warning | RIW | Fremont, Natrona, Sweetwater | 20 hr |
Nearby
High Wind Warnings in Wyoming, 2011Every high wind 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.