Alert archive / Wyoming / High Wind Warnings in 2012
High Wind Warning 6, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Jan 20, 2012, 7:39 PM MST for Fremont County, Natrona County, Sweetwater County, Wyoming. It took effect at Jan 21, 2012, 2:00 AM MST. It was in force for 16 hr. 14 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
- Jan 20, 2012, 7:39 PM MST (02:39 UTC)
- In effect from
- Jan 21, 2012, 2:00 AM MST
- Expired
- Jan 21, 2012, 6:21 PM MST
- In force
- 16 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 02:42 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 |
|---|---|---|---|
| Jan 21, 4:10 AM MST | NON-TSTM WND GST 72 | 5 E Ervay, WY | MEASURED AT THE FALES ROCK RAWS IN SOUTHWEST NATRONA COUNTY. |
| Jan 21, 6:47 AM MST | NON-TSTM WND GST 63 | 2 Nw Casper, WY | SEVERAL WIND GUSTS AROUND 60 MPH WERE RECORDED AT THE CASPER AIRPORT SATURDAY. |
| Jan 21, 9:36 AM MST | HIGH SUST WINDS 48 | Hiland, WY | MEASURED BY WYDOT SENSOR AT HILAND IN WESTERN NATRONA COUNTY. GUSTS TO 57 MPH. |
| Jan 21, 12:14 PM MST | SNOW 0.4 | 1 W Rock Springs, WY | |
| Jan 21, 12:14 PM MST | SNOW 0.6 | 1 E Rock Springs, WY | |
| Jan 21, 3:18 PM MST | SNOW 1 | 11 N Dubois, WY | BURROUGHS CREEK SNOTEL |
| Jan 21, 3:20 PM MST | SNOW 2 | 21 Sw Barnum, WY | GRAVE SPRING SNOTEL |
| Jan 21, 3:23 PM MST | SNOW 1 | 14 W Crowheart, WY | COLD SPRINGS SNOTEL |
| Jan 21, 3:23 PM MST | SNOW 1 | 6 Wsw Dubois, WY | LITTLE WARM SNOTEL |
| Jan 21, 3:23 PM MST | SNOW 5 | 18 W Lander, WY | HOBBS PARK SNOTEL |
| Jan 21, 3:23 PM MST | HEAVY SNOW 8 | 19 Ssw Lander, WY | DEER PARK SNOTEL |
| Jan 21, 3:23 PM MST | HEAVY SNOW 10 | 7 Nw Atlantic City, WY | SOUTH PASS SNOTEL |
| Jan 21, 3:24 PM MST | SNOW 1 | 8 S Casper, WY | CASPER MOUNTAIN SNOTEL |
| Jan 21, 3:24 PM MST | SNOW 2 | 26 Nw Lander, WY | ST. LAWRENCE ALT SNOTEL |
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 00:00Z, 2.7 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
- 1760 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 127 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
149 WWUS75 KRIW 210239 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 739 PM MST FRI JAN 20 2012 ...HIGH WINDS RETURN TO PORTIONS OF CENTRAL WYOMING LATE TONIGHT INTO SATURDAY... .STRONG WINDS ALOFT COMBINED WITH A TIGHTENING SURFACE PRESSURE GRADIENT WILL PRODUCE VERY STRONG WINDS ACROSS SOUTHEAST FREMONT COUNTY AND MUCH OF NATRONA COUNTY BEGINNING LATE TONIGHT...AND LASTING THROUGH THE DAY ON SATURDAY. HIGH WINDS MIGHT ALSO DEVELOP ALONG THE LANDER FOOTHILLS SATURDAY MORNING. WYZ019-211200- /O.UPG.KRIW.HW.A.0004.120121T1200Z-120122T0000Z/ /O.NEW.KRIW.HW.W.0006.120121T0900Z-120122T0000Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 739 PM MST FRI JAN 20 2012 ...HIGH WIND WARNING IN EFFECT FROM 2 AM TO 5 PM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 2 AM TO 5 PM MST SATURDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * SUMMARY AND TIMING...VERY STRONG WINDS WILL DEVELOP AFTER MIDNIGHT...AND CONTINUE THROUGH THE DAY ON SATURDAY...BEFORE WEAKENING LATE SATURDAY AFTERNOON. * WIND...SOUTHWEST WINDS AROUND 40 MPH WITH GUSTS TO 65 MPH ARE EXPECTED. * IMPACTS...LIGHT WEIGHT AND HIGH PROFILE VEHICLES MAY HAVE DIFFICULTY TRAVELING ALONG HIGHWAY 287 FROM BEAVER RIM TO JEFFREY CITY AND MUDDY GAP...AND ALSO ALONG HIGHWAY 220 FROM INDEPENDENCE ROCK TO ALCOVA. 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. && $$ WYZ020-211200- /O.UPG.KRIW.HW.A.0004.120121T1200Z-120122T0000Z/ /O.NEW.KRIW.HW.W.0006.120121T0900Z-120122T0000Z/ NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITY OF...CASPER 739 PM MST FRI JAN 20 2012 ...HIGH WIND WARNING IN EFFECT FROM 2 AM TO 5 PM MST SATURDAY... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 2 AM TO 5 PM MST SATURDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT. * SUMMARY AND TIMING...SOUTHWEST WINDS WILL INCREASE RAPIDLY LATE TONIGHT...WITH VERY STRONG WINDS EXPECTED MUCH OF THE DAY ON SATURDAY...BEFORE WEAKENING LATE SATURDAY AFTERNOON. * WIND...SOUTHWEST WIND OF 30 TO 45 MPH WILL BE COMMON...WITH GUSTS TO 65 MPH. FAVORED LOCATIONS FOR THE STRONGEST WINDS WILL BE ALONG WYOMING BOULEVARD ON THE SOUTH SIDE OF CASPER...AND NEAR THE COMMUNITY OF HILAND. * IMPACTS...STRONG AND SUDDEN WIND GUSTS WILL CREATE HAZARDOUS DRIVING CONDITIONS. THIS INCLUDES HIGHWAY 20...26 FROM HILAND TO CASPER...HIGHWAY 220 FROM CASPER TO ALCOVA...AND ON WYOMING BOULEVARD AROUND CASPER...ESPECIALLY BETWEEN MILEPOSTS 11 AND 13. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ WYZ018-211200- /O.NEW.KRIW.HW.A.0005.120121T1200Z-120121T2100Z/ LANDER FOOTHILLS- INCLUDING THE CITY OF...LANDER 739 PM MST FRI JAN 20 2012 ...HIGH WIND WATCH IN EFFECT FROM 5 AM MST SATURDAY THROUGH SATURDAY AFTERNOON... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS ISSUED A HIGH WIND WATCH...WHICH IS IN EFFECT FROM 5 AM MST SATURDAY THROUGH SATURDAY AFTERNOON. * SUMMARY AND TIMING...STRONG WINDS MAY DEVELOP ACROSS THE LANDER FOOTHILLS SATURDAY MORNING AND LAST THROUGH EARLY SATURDAY AFTERNOON. * WIND...SOUTHWEST 30 TO 40 MPH...WITH GUSTS UP TO 65 MPH. * IMPACTS...TRAVEL ALONG HIGHWAY 287 BETWEEN LANDER AND FORT WASHAKIE MAY BECOME HAZARDOUS DUE TO THE VERY STRONG AND ERRATIC CROSS WINDS. 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. && $$ 21
3 follow-up statements
053 WWUS75 KRIW 211151 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 451 AM MST SAT JAN 21 2012 ...HIGH WINDS ACROSS PORTIONS OF CENTRAL WYOMING TODAY... .STRONG WINDS ALOFT COMBINED WITH A TIGHTENING SURFACE PRESSURE GRADIENT WILL PRODUCE VERY STRONG WINDS ACROSS SOUTHEAST FREMONT COUNTY AND MUCH OF NATRONA COUNTY TODAY. WYZ018-211300- /O.CAN.KRIW.HW.A.0005.120121T1200Z-120121T2100Z/ LANDER FOOTHILLS- INCLUDING THE CITY OF...LANDER 451 AM MST SAT JAN 21 2012 ...HIGH WIND WATCH IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE HIGH WIND WATCH. HIGH WINDS ARE NO LONGER EXPECTED ALONG THE LANDER FOOTHILLS. OCCASIONAL SOUTHWEST WIND AT 25 TO 35 MPH WITH GUSTS NEAR 50 MPH MAY OCCUR THROUGH THE MORNING...ESPECIALLY ALONG THE RIDGE TOPS WEST OF LANDER. $$ WYZ019-220000- /O.CON.KRIW.HW.W.0006.000000T0000Z-120122T0000Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 451 AM MST SAT JAN 21 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * SUMMARY AND TIMING...VERY STRONG WINDS WILL CONTINUE TO BECOME MORE WIDESPREAD THIS MORNING. * WIND...SOUTHWEST WINDS AROUND 40 MPH WITH GUSTS TO 65 MPH ARE EXPECTED. A WIND GUST OF 72 MPH WAS RECORDED AT A REMOTE SENSING SITE IN THE RATTLESNAKE RANGE...ELEVATION 6380 FEET...AT 4 AM. * IMPACTS...LIGHT WEIGHT AND HIGH PROFILE VEHICLES MAY HAVE DIFFICULTY TRAVELING ALONG HIGHWAY 287 FROM BEAVER RIM TO JEFFREY CITY AND MUDDY GAP...AND ALSO ALONG HIGHWAY 220 FROM INDEPENDENCE ROCK TO ALCOVA. HIGHWAY 287 FROM EAST OF JEFFREY CITY TO THE SPLIT ROCK AREA WILL BE ESPECIALLY SUSCEPTIBLE TO STRONG CROSSWIND GUSTS OVER 70 MPH. 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. && $$ WYZ020-220000- /O.CON.KRIW.HW.W.0006.000000T0000Z-120122T0000Z/ NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITY OF...CASPER 451 AM MST SAT JAN 21 2012 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * SUMMARY AND TIMING...STRONG SOUTHWEST WINDS ALOFT WILL PUSH DOWN TO THE SURFACE EARLY THIS MORNING. THESE STRONG WINDS ARE EXPECTED TO CONTINUE THROUGH MUCH OF THE DAY...BEFORE WEAKENING LATE THIS AFTERNOON. * WIND...SOUTHWEST WIND OF 30 TO 45 MPH WILL BE COMMON...WITH GUSTS TO 65 MPH. FAVORED LOCATIONS FOR THE STRONGEST WINDS WILL BE ALONG WYOMING BOULEVARD ON THE SOUTH SIDE OF CASPER... AND NEAR THE COMMUNITY OF HILAND. * IMPACTS...STRONG AND SUDDEN WIND GUSTS WILL CREATE HAZARDOUS DRIVING CONDITIONS. THIS INCLUDES HIGHWAY 20...26 FROM HILAND TO CASPER...HIGHWAY 220 FROM CASPER TO ALCOVA...AND ON WYOMING BOULEVARD AROUND CASPER...ESPECIALLY BETWEEN MILEPOSTS 11 AND 13. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ AEM
451 WWUS75 KRIW 212150 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 250 PM MST SAT JAN 21 2012 ...HIGH WINDS ACROSS PORTIONS OF CENTRAL WYOMING UNTIL 7 PM MST... .STRONG WINDS ALOFT COMBINED WITH A TIGHTENING SURFACE PRESSURE GRADIENT WILL PRODUCE VERY STRONG WINDS ACROSS SOUTHERN FREMONT COUNTY AND MUCH OF NATRONA COUNTY UNTIL 7 PM MST THIS EVENING. WYZ019-220200- /O.EXT.KRIW.HW.W.0006.000000T0000Z-120122T0200Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- INCLUDING THE CITY OF...JEFFREY CITY 250 PM MST SAT JAN 21 2012 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 7 PM MST THIS EVENING... * SUMMARY AND TIMING...VERY STRONG WINDS WILL CONTINUE UNTIL AROUND 7 PM MST. * WIND...SOUTHWEST WINDS AROUND 40 MPH WITH GUSTS TO 65 MPH ARE EXPECTED. * IMPACTS...LIGHT WEIGHT AND HIGH PROFILE VEHICLES MAY HAVE DIFFICULTY TRAVELING ALONG HIGHWAY 287 FROM BEAVER RIM TO JEFFREY CITY AND MUDDY GAP...AND ALSO ALONG HIGHWAY 220 FROM INDEPENDENCE ROCK TO ALCOVA. HIGHWAY 287 FROM EAST OF JEFFREY CITY TO THE SPLIT ROCK AREA WILL BE ESPECIALLY SUSCEPTIBLE TO STRONG CROSSWIND GUSTS OVER 70 MPH. 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. && $$ WYZ020-220200- /O.EXT.KRIW.HW.W.0006.000000T0000Z-120122T0200Z/ NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITY OF...CASPER 250 PM MST SAT JAN 21 2012 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 7 PM MST THIS EVENING... * SUMMARY AND TIMING...VERY STRONG WINDS WILL CONTINUE UNTIL AROUND 7 PM MST. * WIND...SOUTHWEST WIND OF 40 TO 45 MPH WILL BE COMMON...WITH GUSTS TO 65 MPH. FAVORED LOCATIONS FOR THE STRONGEST WINDS WILL BE ALONG WYOMING BOULEVARD ON THE SOUTH SIDE OF CASPER... AND NEAR THE COMMUNITY OF HILAND. * IMPACTS...STRONG AND SUDDEN WIND GUSTS WILL CREATE HAZARDOUS DRIVING CONDITIONS. THIS INCLUDES HIGHWAY 20...26 FROM HILAND TO CASPER...HIGHWAY 220 FROM CASPER TO ALCOVA...AND ON WYOMING BOULEVARD AROUND CASPER...ESPECIALLY BETWEEN MILEPOSTS 11 AND 13. PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. THE LATEST ROAD CONDITIONS PROVIDED BY THE WYOMING DEPARTMENT OF TRANSPORTATION ARE AVAILABLE BY CALLING 5-1-1 OR ON THE INTERNET AT WYOROAD.INFO. && $$ C.BAKER
964 WWUS75 KRIW 220121 NPWRIW URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE RIVERTON WY 621 PM MST SAT JAN 21 2012 WYZ019-020-220230- /O.CAN.KRIW.HW.W.0006.000000T0000Z-120122T0200Z/ GREEN MOUNTAINS AND RATTLESNAKE RANGE- NATRONA COUNTY LOWER ELEVATIONS- INCLUDING THE CITIES OF...JEFFREY CITY...CASPER 621 PM MST SAT JAN 21 2012 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN RIVERTON HAS CANCELLED THE HIGH WIND WARNING. THE STRONG WINDS HAVE WEAKENED AND WINDS ARE NO LONGER EXPECTED TO REACH HIGH WIND CRITERIA. $$ 21
The office that day
Everything else NWS Riverton, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 20, 7:39 PM MST | High Wind Watch | RIW | Fremont | 9 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.