Alert archive / Wyoming / High Wind Warnings in 2012
High Wind Warning 30, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Nov 21, 2012, 1:40 AM MST for Fremont County, Natrona County, Sweetwater County, Wyoming. It took effect at Nov 21, 2012, 8:00 AM MST. It was in force for 26 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
- Nov 21, 2012, 1:40 AM MST (08:40 UTC)
- In effect from
- Nov 21, 2012, 8:00 AM MST
- Expired
- Nov 22, 2012, 10:00 AM MST
- In force
- 26 hr
- Issued by
- NWS Riverton, WY
Counties Fremont County, WY, Natrona County, WY, Sweetwater County, WY
The radar
The Riverton/Lander radar (KRIW), 65 km from the middle of the area, began a volume at 08:44 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 00:00Z, 8.7 hours before the alert went out and 62 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
- 1951 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 146 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
775 WWUS75 KRIW 210840 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 140 AM MST WED NOV 21 2012 ...VERY STRONG WINDS EXPECTED ACROSS PARTS OF CENTRAL WYOMING TODAY AND TONIGHT... .A STRONG SOUTHWEST FLOW AHEAD OF AN APPROACHING COLD FRONT WILL BEGIN TO PRODUCE HIGH WINDS ACROSS NATRONA COUNTY AND THE GREEN MOUNTAINS AND RATTLESNAKE RANGES TODAY AND TONIGHT. AS THE COLD FRONT BLASTS SOUTHEAST THROUGH THE DUBOIS TO CROWHEART AREA THIS EVENING...HIGH WINDS MAY DEVELOP IN THIS AREA AND CONTINUE OVERNIGHT. WYZ019-212230- /O.UPG.KRIW.HW.A.0028.121121T1500Z-121122T0600Z/ /O.NEW.KRIW.HW.W.0030.121121T1500Z-121122T0900Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 140 AM MST WED NOV 21 2012 ...HIGH WIND WARNING IN EFFECT FROM 8 AM THIS MORNING TO 2 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 8 AM THIS MORNING TO 2 AM MST THURSDAY. THE HIGH WIND WATCH HAS BEEN UPGRADED. * SUMMARY AND TIMING...WINDS ARE EXPECTED TO INCREASE THROUGH THE MORNING AND WILL BEGIN TO GUST IN EXCESS OF 60 MPH BY NOON. THE POTENTIAL FOR HIGH WINDS WILL CONTINUE THROUGH THE EVENING WHEN A STRONG COLD FRONT MOVES EAST ACROSS THE AREA. OUTSIDE OF THE VALID WARNING TIME...SOUTHWEST WINDS WILL CONTINUE BLOW 20 TO 30 MPH WITH GUSTS OVER 40 MPH THROUGH EARLY THURSDAY MORNING. * WIND...SOUTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN BEAVER RIM...JEFFREY CITY AND MUDDY GAP SHOULD BE ALERT FOR THESE VERY STRONG AND SOMETIMES ERRATIC SOUTHWEST WINDS TODAY THROUGH EARLY THANKSGIVING MORNING. && 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. && $$ WYZ020-212230- /O.NEW.KRIW.HW.W.0030.121121T1500Z-121122T0900Z/ NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITY OF...CASPER 140 AM MST WED NOV 21 2012 ...HIGH WIND WARNING IN EFFECT FROM 8 AM THIS MORNING TO 2 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 8 AM THIS MORNING TO 2 AM MST THURSDAY. * SUMMARY AND TIMING...WINDS ARE EXPECTED TO INCREASE THROUGH THE MORNING AND WILL BEGIN TO GUST IN EXCESS OF 60 MPH BY NOON. THE POTENTIAL FOR HIGH WINDS WILL CONTINUE THROUGH THE EVENING WHEN A STRONG COLD FRONT MOVES EAST ACROSS THE AREA. OUTSIDE OF THE VALID WARNING TIME...SOUTHWEST WINDS WILL CONTINUE BLOW 20 TO 30 MPH WITH GUSTS OVER 40 MPH THROUGH EARLY THURSDAY MORNING. * WIND...SOUTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN HILAND AND CASPER...ALONG INTERSTATE 25...AND STATE HIGHWAY 220 BETWEEN MUDDY GAP AND CASPER SHOULD BE ALERT FOR THESE VERY STRONG AND SOMETIMES ERRATIC SOUTHWEST WINDS TODAY THROUGH THANKSGIVING MORNING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ WYZ016-212230- /O.CON.KRIW.HW.A.0028.121122T0300Z-121122T1500Z/ UPPER WIND RIVER BASIN- INCLUDING THE CITY OF...DUBOIS 140 AM MST WED NOV 21 2012 ...HIGH WIND WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING... A HIGH WIND WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH THURSDAY MORNING. * SUMMARY AND TIMING...A STRONG COLD FRONT WILL PUSH SOUTHEAST ACROSS THE AREA THIS EVENING WITH THE THREAT OF VERY STRONG NORTHWEST WINDS DEVELOPING AND CONTINUING UNTIL AROUND SUNRISE THURSDAY. * WIND...NORTHWEST 30 TO 40 MPH WITH GUSTS TO 60 MPH POSSIBLE. * IMPACTS...TRAVELERS BETWEEN CROWHEART AND DUBOIS SHOULD BE PREPARED FOR POTENTIALLY VERY STRONG AND ERRATIC WINDS TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A HIGH WIND WATCH MEANS CONDITIONS ARE FAVORABLE FOR A HAZARDOUS HIGH WIND EVENT IN AND CLOSE TO THE WATCH AREA. 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. && $$
4 follow-up statements
999 WWUS75 KRIW 212131 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 231 PM MST WED NOV 21 2012 ...VERY STRONG WINDS EXPECTED ACROSS PARTS OF CENTRAL WYOMING THROUGH TONIGHT AND INTO THURSDAY MORNING... .A STRONG SOUTHWEST FLOW AHEAD OF AN APPROACHING COLD FRONT WILL CONTINUE TO PRODUCE HIGH WINDS ACROSS NATRONA COUNTY AND THE GREEN MOUNTAINS AND RATTLESNAKE RANGES THROUGH MUCH OF TONIGHT. AS THE COLD FRONT BLASTS SOUTHEAST THROUGH THE DUBOIS TO CROWHEART AREA LATER THIS EVENING...HIGH WINDS WILL DEVELOP AND CONTINUE INTO THURSDAY MORNING. WYZ016-220915- /O.EXB.KRIW.HW.W.0030.121122T0500Z-121122T1700Z/ UPPER WIND RIVER BASIN- INCLUDING THE CITY OF...DUBOIS 231 PM MST WED NOV 21 2012 ...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM MST THURSDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM MST THURSDAY. * SUMMARY AND TIMING...A STRONG COLD FRONT WILL BLAST SOUTHEAST ACROSS THE AREA AFTER 11 PM PRODUCING AREAS OF HIGH WINDS. THESE VERY STRONG WINDS WILL LIKELY CONTINUE INTO THURSDAY MORNING BEFORE DECREASING BELOW HIGH WIND CRITERIA. * WIND...NORTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN CROWHEART AND DUBOIS SHOULD BE PREPARED FOR VERY STRONG AND ERRATIC WINDS TONIGHT AND THURSDAY MORNING. SECURE ALL LOOSE OUTDOOR ITEMS BEFORE THE STRONGEST WINDS ARRIVE LATER THIS EVENING. A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ WYZ019-020-220900- /O.CON.KRIW.HW.W.0030.000000T0000Z-121122T0900Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITIES OF...JEFFREY CITY...CASPER 231 PM MST WED NOV 21 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM MST THURSDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM MST THURSDAY. * SUMMARY AND TIMING...VERY STRONG SOUTHWEST WINDS WILL CONTINUE THROUGH THE EVENING WHEN A STRONG COLD FRONT MOVES EAST ACROSS THE AREA. * WIND...SOUTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN BEAVER RIM...JEFFREY CITY AND MUDDY GAP SHOULD BE ALERT FOR THESE VERY STRONG AND SOMETIMES ERRATIC SOUTHWEST WINDS THROUGH EARLY THANKSGIVING MORNING. 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. && $$
110 WWUS75 KRIW 220209 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 709 PM MST WED NOV 21 2012 ...VERY STRONG WINDS EXPECTED ACROSS PARTS OF CENTRAL WYOMING TONIGHT AND INTO THURSDAY MORNING... .A STRONG SOUTHWEST FLOW AHEAD OF AN APPROACHING COLD FRONT WILL CONTINUE TO PRODUCE HIGH WINDS ACROSS THE GREEN MOUNTAINS AND RATTLESNAKE RANGES THROUGH MUCH OF TONIGHT. AS THE COLD FRONT BLASTS SOUTHEAST THROUGH THE DUBOIS TO CROWHEART AREA LATER THIS EVENING...HIGH WINDS WILL DEVELOP AND CONTINUE INTO THURSDAY MORNING. WYZ020-220315- /O.CAN.KRIW.HW.W.0030.000000T0000Z-121122T0900Z/ NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITY OF...CASPER 709 PM MST WED NOV 21 2012 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE HIGH WIND WARNING. WINDS HAVE WEAKENED...AND ARE EXPECTED TO REMAIN BELOW HIGH WIND CRITERIA FOR THE REST OF THE NIGHT. HOWEVER...WINDY SOUTHWEST TO WEST WINDS WILL CONTINUE THIS EVENING...ESPECIALLY WEST OF CASPER. THE PEAK WIND AT THE CASPER AIRPORT WAS 53 MPH AT 1033 AM THIS MORNING. $$ WYZ019-220900- /O.CON.KRIW.HW.W.0030.000000T0000Z-121122T0900Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 709 PM MST WED NOV 21 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM MST THURSDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 2 AM MST THURSDAY. * SUMMARY AND TIMING...VERY STRONG SOUTHWEST WINDS WILL CONTINUE THROUGH THE EVENING WHEN A STRONG COLD FRONT MOVES EAST ACROSS THE AREA. * WIND...SOUTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN BEAVER RIM...JEFFREY CITY AND MUDDY GAP SHOULD BE ALERT FOR THESE VERY STRONG AND SOMETIMES ERRATIC SOUTHWEST WINDS THROUGH EARLY THANKSGIVING MORNING. 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. && $$ WYZ016-221015- /O.CON.KRIW.HW.W.0030.121122T0500Z-121122T1700Z/ UPPER WIND RIVER BASIN- INCLUDING THE CITY OF...DUBOIS 709 PM MST WED NOV 21 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THURSDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THURSDAY. * SUMMARY AND TIMING...A STRONG COLD FRONT WILL BLAST SOUTHEAST ACROSS THE AREA AFTER 11 PM PRODUCING AREAS OF HIGH WINDS. THESE VERY STRONG WINDS WILL LIKELY CONTINUE INTO THURSDAY MORNING BEFORE DECREASING BELOW HIGH WIND CRITERIA. * WIND...NORTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN CROWHEART AND DUBOIS SHOULD BE PREPARED FOR VERY STRONG AND ERRATIC WINDS TONIGHT AND THURSDAY MORNING. SECURE ALL LOOSE OUTDOOR ITEMS BEFORE THE STRONGEST WINDS ARRIVE LATER THIS EVENING. A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ 21
093 WWUS75 KRIW 220851 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 151 AM MST THU NOV 22 2012 ...VERY STRONG WINDS EXPECTED ACROSS PARTS OF CENTRAL WYOMING TONIGHT AND INTO THURSDAY MORNING... .IN THE GREEN MOUNTAINS AND RATTLESNAKE RANGE...WIND SPEEDS WILL REMAIN BELOW WARNING CRITERIA FOR THE REST OF THE MORNING AS THE COLD FRONT PASSES AND WIND DIRECTIONS BECOME LESS FAVORABLE FOR HIGH WIND ACROSS SOUTHEASTERN FREMONT COUNTY. HOWEVER AS THE COLD FRONT BLASTS SOUTHEAST THROUGH THE DUBOIS TO CROWHEART AREA THIS MORNING...THE WIND DIRECTION WILL BECOME MORE FAVORABLE HIGH WINDS TO DEVELOP. THE HIGH WIND THREAT WILL CONTINUE IN THE DUBOIS AREA THROUGH MID MORNING. WYZ019-221000- /O.EXP.KRIW.HW.W.0030.000000T0000Z-121122T0900Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 151 AM MST THU NOV 22 2012 ...HIGH WIND WARNING WILL EXPIRE AT 2 AM MST EARLY THIS MORNING... THE HIGH WIND WARNING WILL EXPIRE AT 2 AM MST EARLY THIS MORNING. $$ WYZ016-221700- /O.CON.KRIW.HW.W.0030.000000T0000Z-121122T1700Z/ UPPER WIND RIVER BASIN- INCLUDING THE CITY OF...DUBOIS 151 AM MST THU NOV 22 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THIS MORNING... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 10 AM MST THIS MORNING. * SUMMARY AND TIMING...A STRONG COLD FRONT WILL CONTINUE TO MOVE EAST THROUGH THE AREA PRODUCING AREAS OF HIGH WINDS THIS MORNING. THESE VERY STRONG WINDS WILL LIKELY CONTINUE THROUGH MID MORNING. * WIND...NORTHWEST 30 TO 40 MPH WITH GUSTS AROUND 60 MPH. * IMPACTS...TRAVELERS BETWEEN CROWHEART AND DUBOIS SHOULD BE PREPARED FOR VERY STRONG AND ERRATIC WINDS THIS MORNING. A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$
859 WWUS75 KRIW 221655 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 955 AM MST THU NOV 22 2012 WYZ016-221800- /O.EXP.KRIW.HW.W.0030.000000T0000Z-121122T1700Z/ UPPER WIND RIVER BASIN- INCLUDING THE CITY OF...DUBOIS 955 AM MST THU NOV 22 2012 ...HIGH WIND WARNING WILL EXPIRE AT 10 AM MST THIS MORNING... THE HIGH WIND WARNING WILL EXPIRE AT 10 AM MST THIS MORNING. STRONG NORTHWEST WINDS WILL CONTINUE TODAY BUT HIGH WINDS ARE NO LONGER EXPECTED. NORTHWEST WINDS UP TO 50 MPH WERE REPORTED THIS MORNING AND GUSTY NORTHWEST WINDS OF 25 TO 40 MPH ARE STILL EXPECTED MUCH OF TODAY. $$ TEAM RIVERTON
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 1:42 AM MST | Winter Weather Advisory | RIW | Fremont, Lincoln, Park, Sublette, Teton | 24 hr |
Nearby
High Wind Warnings in Wyoming, 2012Every high wind warning in 2012
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.