Alert archive / Wyoming / High Wind Warnings in 2025
High Wind Warning 8, NWS Riverton, WY
NWS Riverton, WY issued this high wind warning at Mar 15, 2025, 1:17 PM MDT for 9 counties in Wyoming. It took effect at Mar 16, 2025, 6:00 AM MDT. It was in force for 30 hr. 56 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
- Mar 15, 2025, 1:17 PM MDT (19:17 UTC)
- In effect from
- Mar 16, 2025, 6:00 AM MDT
- Expired
- Mar 17, 2025, 12:00 PM MDT
- In force
- 30 hr
- Issued by
- NWS Riverton, WY
Counties Big Horn County, WY, Fremont County, WY, Hot Springs County, WY, Johnson County, WY, Natrona County, WY, Park County, WY, Sublette County, WY, Sweetwater County, WY, Washakie County, WY
The radar
The Riverton/Lander radar (KRIW), 47 km from the middle of the area, began a volume at 19:20 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 |
|---|---|---|---|
| Mar 16, 2:00 PM MDT | NON-TSTM WND GST 54 | 8 Wnw Bar Nunn, WY | Mesonet station FW7361 Casper. |
| Mar 16, 2:10 PM MDT | NON-TSTM WND GST 50 | 11 Sw Mills, WY | Mesonet station PC250 North Platte. |
| Mar 16, 2:10 PM MDT | NON-TSTM WND GST 54 | 4 Nw Calpet, WY | Mesonet station PC398 Hogsback. |
| Mar 16, 2:22 PM MDT | NON-TSTM WND GST 68 | 6 Nw Mills, WY | ASOS station KCPR Casper Airport. |
| Mar 16, 2:30 PM MDT | NON-TSTM WND GST 63 | 13 Se Evansville, WY | Mesonet station PC459 Muddy Creek. |
| Mar 16, 2:36 PM MDT | NON-TSTM WND GST 53 | 10 Ene Wamsutter, WY | Mesonet station KCTD Wamsutter 10.5 E (WYDOT). |
| Mar 16, 2:42 PM MDT | NON-TSTM WND GST 53 | 1 S Bar Nunn, WY | Mesonet station FW2904 Bar Nunn. |
| Mar 16, 2:56 PM MDT | NON-TSTM WND GST 67 | 2 Sse Casper, WY | Mesonet station WY47 Casper 2.1 SW (WYDOT). |
| Mar 16, 3:00 PM MDT | NON-TSTM WND GST 68 | 6 Se Casper, WY | Mesonet station PC392 Claude Creek. |
| Mar 16, 3:10 PM MDT | NON-TSTM WND GST 55 | 17 Ssw Midwest, WY | Mesonet station PC576 Horse Ranch Creek. |
| Mar 16, 3:10 PM MDT | NON-TSTM WND GST 74 | 3 Ne Lander, WY | Mesonet station PC259 Wyopo. |
| Mar 16, 3:12 PM MDT | NON-TSTM WND GST 55 | 3 S Worland, WY | ASOS station KWRL Worland Airport. |
| Mar 16, 3:16 PM MDT | NON-TSTM WND GST 67 | 14 N Bar Nunn, WY | Mesonet station KTMH Bar Nunn 13.6 N (WYDOT). |
| Mar 16, 3:42 PM MDT | NON-TSTM WND GST 61 | 10 Wsw Grass Creek, WY | Mesonet station GCRW4 Meeteetse 10 S. |
| Mar 16, 3:50 PM MDT | NON-TSTM WND GST 57 | 12 E Worland, WY | Mesonet station PC457 Hidden Dome. |
| Mar 16, 3:56 PM MDT | NON-TSTM WND GST 51 | 20 Ne Opal, WY | Mesonet station KSHC Shute Creek. |
| Mar 16, 3:56 PM MDT | NON-TSTM WND GST 67 | 6 Wnw Sweetwater Statio, WY | Mesonet station KBVR Beaver Rim (WYDOT). |
| Mar 16, 4:06 PM MDT | NON-TSTM WND GST 53 | 8 N Meeteetse, WY | Mesonet station KMTR Meeteetse 8 N (WYDOT). |
| Mar 16, 4:08 PM MDT | NON-TSTM WND GST 55 | 3 Ene Granger, WY | Mesonet station UP186 Granger 3 NE. |
| Mar 16, 4:10 PM MDT | NON-TSTM WND GST 75 | 5 E Ervay, WY | Mesonet station RSNW4 Hiland 16 S. |
| Mar 16, 4:16 PM MDT | NON-TSTM WND GST 58 | 6 W Alcova, WY | Mesonet station KPAT Alcova 7 W (WYDOT). |
| Mar 16, 4:26 PM MDT | NON-TSTM WND GST 107 | 10 Ne Atlantic City, WY | Mesonet station KREC Red Canyon - South Pass. |
| Mar 16, 4:35 PM MDT | NON-TSTM WND GST 52 | 8 Se Reliance, WY | ASOS station KRKS Rock Springs Airport. |
| Mar 16, 5:24 PM MDT | NON-TSTM WND GST 54 | 1 Sw Evansville, WY | Mesonet station GW4455 EVANSVILLE. |
| Mar 16, 5:30 PM MDT | NON-TSTM WND GST 54 | 7 S Casper, WY | Mesonet station PC390 Whitcomb Road. |
| Mar 16, 5:38 PM MDT | NON-TSTM WND GST 50 | 5 Se Reliance, WY | Mesonet station WY10 Reliance 5.2 SE (WYDOT). |
| Mar 16, 5:38 PM MDT | NON-TSTM WND GST 62 | 2 Ne Mills, WY | Mesonet station WY50 Mills 2 NE (WYDOT). |
| Mar 16, 5:46 PM MDT | NON-TSTM WND GST 55 | 4 Nnw Hudson, WY | Mesonet station SHPW4 Hudson 3 NNW. |
| Mar 16, 5:48 PM MDT | NON-TSTM WND GST 65 | Natrona, WY | Mesonet station WY45 Natrona (WYDOT). |
| Mar 16, 5:50 PM MDT | NON-TSTM WND GST 52 | 7 S Casper, WY | Mesonet station PC391 Stag Run. |
| Mar 16, 5:50 PM MDT | NON-TSTM WND GST 68 | 7 N Bairoil, WY | Mesonet station CAMW4 Muddy Gap 7 SW. |
| Mar 16, 5:52 PM MDT | NON-TSTM WND GST 56 | 8 S Casper, WY | Mesonet station CMRW4 Casper 8 S. |
| Mar 16, 7:20 PM MDT | NON-TSTM WND GST 83 | 3 Sw Lander, WY | Mesonet station PC454 Moss Rock. |
| Mar 16, 7:37 PM MDT | NON-TSTM WND GST 75 | 1 Ssw Lander, WY | ASOS station KLND Lander Airport. |
| Mar 16, 7:50 PM MDT | NON-TSTM WND GST 58 | 3 Wnw Lander, WY | Mesonet station PC453 Baldwin Creek. |
| Mar 16, 9:05 PM MDT | NON-TSTM WND GST 60 | 8 Wnw Lander, WY | Mesonet station EW0138 Lander 7 NW. |
| Mar 16, 9:55 PM MDT | NON-TSTM WND GST 59 | 13 S Thermopolis, WY | AWOS station KTBX Boysen Peak. |
| Mar 16, 11:01 PM MDT | NON-TSTM WND GST 68 | 12 W Fort Washakie, WY | Mesonet station WRVW4 Fort Washakie 10 W. |
| Mar 16, 11:30 PM MDT | NON-TSTM WND GST 60 | 1 Nnw Buffalo, WY | Mesonet station GW1458 BUFFALO. |
| Mar 16, 11:40 PM MDT | NON-TSTM WND GST 55 | 15 Nne Mayoworth, WY | Mesonet station PC578 Purdy East. |
| Mar 17, 12:30 AM MDT | NON-TSTM WND GST 66 | 24 Ese Buffalo, WY | Mesonet station WY3 Ucross 28 SE (WYDOT). |
| Mar 17, 1:00 AM MDT | NON-TSTM WND GST 56 | 2 Ssw Buffalo, WY | Mesonet station PC460 Buffalo South. |
| Mar 17, 1:10 AM MDT | NON-TSTM WND GST 53 | 11 W Wapiti, WY | Mesonet station PC260 Fork. |
| Mar 17, 1:15 AM MDT | NON-TSTM WND GST 55 | 7 Ne Buffalo, WY | Mesonet station DW9955 Buffalo. |
| Mar 17, 1:40 AM MDT | NON-TSTM WND GST 52 | 31 Ese Buffalo, WY | Mesonet station KDHS Echeta 20 SW (WYDOT). |
| Mar 17, 1:50 AM MDT | NON-TSTM WND GST 59 | 12 W Daniel, WY | Mesonet station PC452 Cottonwood Merna. |
| Mar 17, 1:59 AM MDT | NON-TSTM WND GST 59 | 3 Nnw Buffalo, WY | ASOS station KBYG Buffalo Airport. |
| Mar 17, 2:20 AM MDT | NON-TSTM WND GST 52 | 11 Se Wapiti, WY | Mesonet station PC462 Irma Lake. |
| Mar 17, 2:47 AM MDT | NON-TSTM WND GST 71 | 14 Wsw Buffalo, WY | Mesonet station SPKW4 Buffalo 18 NW. |
| Mar 17, 2:50 AM MDT | NON-TSTM WND GST 55 | 13 Wnw Midwest, WY | Mesonet station PC549 Tisdale Mountain. |
| Mar 17, 2:50 AM MDT | NON-TSTM WND GST 83 | 8 E Sunlight Basin, WY | Mesonet station KCHJ Sunlight Basin 8 E (WYDOT). |
| Mar 17, 3:00 AM MDT | NON-TSTM WND GST 58 | 1 Wnw Clark, WY | Mesonet station DW7095 Clark. |
| Mar 17, 3:10 AM MDT | NON-TSTM WND GST 72 | 8 E Sunlight Basin, WY | Mesonet station PC396 Dead Indian Ridge. |
| Mar 17, 3:46 AM MDT | NON-TSTM WND GST 54 | 7 Ssw Barnum, WY | Mesonet station PCRW4 Barnum 7 SW. |
| Mar 17, 7:32 AM MDT | NON-TSTM WND GST 71 | 4 Se Evansville, WY | Mesonet station WY61 I25 - Hat Six. |
| Mar 17, 11:42 AM MDT | NON-TSTM WND GST 60 | 2 Se Hiland, WY | Mesonet station KHLD Hiland 2.4 SE (WYDOT). |
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, 7.3 hours before the alert went out and 44 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
- 1982 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
289 WWUS75 KRIW 151917 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 117 PM MDT Sat Mar 15 2025 WYZ002-003-161300- /O.UPG.KRIW.HW.A.0007.250316T1200Z-250317T1200Z/ /O.NEW.KRIW.HW.W.0008.250316T1200Z-250317T1200Z/ Absaroka Mountains-Cody Foothills- Including the cities of Cody, Meeteetse, and Clark 117 PM MDT Sat Mar 15 2025 ...HIGH WIND WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 80 mph expected. * WHERE...Absaroka Mountains and Cody Foothills. * WHEN...From 6 AM Sunday to 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Motorists should be aware of sudden and strong crosswinds, especially near Chief Joseph. $$ WYZ008-009-161300- /O.UPG.KRIW.HW.A.0007.250316T1200Z-250317T0600Z/ /O.NEW.KRIW.HW.W.0008.250316T1200Z-250317T1200Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 117 PM MDT Sat Mar 15 2025 ...HIGH WIND WARNING IN EFFECT FROM 6 AM SUNDAY TO 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 80 mph expected. * WHERE...Bighorn Mountains. * WHEN...From 6 AM Sunday to 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ014-015-161300- /O.UPG.KRIW.HW.A.0007.250316T1200Z-250317T0600Z/ /O.NEW.KRIW.HW.W.0008.250316T1200Z-250317T0600Z/ Wind River Mountains West-Wind River Mountains East- 117 PM MDT Sat Mar 15 2025 ...HIGH WIND WARNING IN EFFECT FROM 6 AM SUNDAY TO MIDNIGHT MDT SUNDAY NIGHT... * WHAT...Southwest winds 35 to 45 mph with gusts up to 80 mph expected. * WHERE...Wind River Mountains. * WHEN...From 6 AM Sunday to midnight MDT Sunday Night. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ019-020-161300- /O.UPG.KRIW.HW.A.0007.250316T1200Z-250317T1800Z/ /O.NEW.KRIW.HW.W.0008.250316T1200Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 117 PM MDT Sat Mar 15 2025 ...HIGH WIND WARNING IN EFFECT FROM 6 AM SUNDAY TO NOON MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph expected. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...From 6 AM Sunday to noon MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles, especially along the Casper Outer Loop. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Straub
6 follow-up statements
106 WWUS75 KRIW 160738 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 138 AM MDT Sun Mar 16 2025 WYZ002-003-162200- /O.CON.KRIW.HW.W.0008.250316T1200Z-250317T1200Z/ Absaroka Mountains-Cody Foothills- Including the cities of Meeteetse, Cody, and Clark 138 AM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 80 mph expected. * WHERE...Absaroka Mountains and Cody Foothills. * WHEN...From 6 AM this morning to 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Motorists should be aware of sudden and strong crosswinds, especially near Chief Joseph. $$ WYZ008-009-162200- /O.CON.KRIW.HW.W.0008.250316T1200Z-250317T1200Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 138 AM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 80 mph expected. * WHERE...Bighorn Mountains. * WHEN...From 6 AM this morning to 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ014-015-162200- /O.CON.KRIW.HW.W.0008.250316T1200Z-250317T0600Z/ Wind River Mountains West-Wind River Mountains East- 138 AM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO MIDNIGHT MDT TONIGHT... * WHAT...Southwest winds 35 to 45 mph with gusts up to 80 mph expected. * WHERE...Wind River Mountains. * WHEN...From 6 AM this morning to midnight MDT tonight. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ019-020-162200- /O.CON.KRIW.HW.W.0008.250316T1200Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Jeffrey City and Casper 138 AM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT FROM 6 AM THIS MORNING TO NOON MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph expected. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...From 6 AM this morning to noon MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles, and along Outer Drive in Casper. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann
835 WWUS75 KRIW 170200 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 800 PM MDT Sun Mar 16 2025 WYZ018-170900- /O.EXB.KRIW.HW.W.0008.000000T0000Z-250317T0900Z/ Lander Foothills- Including the cities of Lander 800 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING IN EFFECT UNTIL 3 AM MDT MONDAY... * WHAT...Southwest winds 25 to 35 mph with gusts up to 65 mph expected. * WHERE...Lander Foothills. * WHEN...Until 3 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Unsecured objects may become displaced due to strong gusts of wind. $$ WYZ002-003-170900- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Absaroka Mountains-Cody Foothills- Including the cities of Cody, Meeteetse, and Clark 800 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 80 mph expected. * WHERE...Absaroka Mountains and Cody Foothills. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Motorists should be aware of sudden and strong crosswinds, especially near Chief Joseph. $$ WYZ008-009-170900- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 800 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 80 mph expected. * WHERE...Bighorn Mountains. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ014-015-170600- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T0600Z/ Wind River Mountains West-Wind River Mountains East- 800 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... * WHAT...Southwest winds 30 to 40 mph with gusts up to 80 mph. * WHERE...Wind River Mountains. * WHEN...Until midnight MDT tonight. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ019-020-170900- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Casper and Jeffrey City 800 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph expected. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...Until noon MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles, and along Outer Drive in Casper. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Dziewaltowski
802 WWUS75 KRIW 170544 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1144 PM MDT Sun Mar 16 2025 WYZ014-015-171200- /O.EXT.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Wind River Mountains West-Wind River Mountains East- 1144 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph. * WHERE...Wind River Mountains, especially the east slopes and South Pass/Red Canyon. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Use caution if you must drive. $$ WYZ002-003-171200- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Absaroka Mountains-Cody Foothills- Including the cities of Meeteetse, Cody, and Clark 1144 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 75 mph. * WHERE...Absaroka Mountains and Cody Foothills. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Motorists should be aware of sudden and strong crosswinds, especially near Chief Joseph. $$ WYZ008-009-171200- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 1144 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 75 mph. * WHERE...Bighorn Mountains. * WHEN...Until 6 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ018-170900- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T0900Z/ Lander Foothills- Including the cities of Lander 1144 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 3 AM MDT MONDAY... * WHAT...Southwest winds 30 to 40 mph with gusts up to 65 mph. * WHERE...Lander Foothills. * WHEN...Until 3 AM MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Unsecured objects may become displaced due to strong gusts of wind. $$ WYZ019-020-171200- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Casper and Jeffrey City 1144 PM MDT Sun Mar 16 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT MONDAY... * WHAT...Southwest winds 25 to 35 mph with gusts up to 60 mph. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...Until noon MDT Monday. * IMPACTS...Travel could be difficult, especially for high profile vehicles, and along Outer Drive in Casper. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . TL
154 WWUS75 KRIW 170849 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 249 AM MDT Mon Mar 17 2025 WYZ018-171000- /O.EXP.KRIW.HW.W.0008.000000T0000Z-250317T0900Z/ Lander Foothills- Including the cities of Lander 249 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING WILL EXPIRE AT 3 AM MDT EARLY THIS MORNING... The strongest winds have subsided, but gusts 30 to 40 mph will continue into Monday afternoon. $$ WYZ002-003-171200- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Absaroka Mountains-Cody Foothills- Including the cities of Clark, Meeteetse, and Cody 249 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING... * WHAT...Southwest winds 35 to 45 mph with gusts up to 80 mph expected. * WHERE...Absaroka Mountains and Cody Foothills. * WHEN...Until 6 AM MDT early this morning. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Motorists should be aware of sudden and strong crosswinds, especially near Chief Joseph. $$ WYZ008-009-171200- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Bighorn Mountains West-Bighorn Mountains Southeast- 249 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING... * WHAT...Southwest winds 30 to 40 mph with gusts up to 80 mph expected. * WHERE...Bighorn Mountains. * WHEN...Until 6 AM MDT early this morning. * IMPACTS...Travel could be difficult, especially for high profile vehicles. $$ WYZ014-015-171200- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Wind River Mountains West-Wind River Mountains East- 249 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL 6 AM MDT EARLY THIS MORNING... * WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph. * WHERE...Wind River Mountains, especially the east slopes and South Pass/Red Canyon. * WHEN...Until 6 AM MDT early this morning. * IMPACTS...Travel could be difficult, especially for high profile vehicles. Use caution if you must drive. $$ WYZ019-020-171800- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Casper and Jeffrey City 249 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 75 mph expected. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...Until noon MDT today. * IMPACTS...Travel could be difficult, especially for high profile vehicles, and along Outer Drive in Casper. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Wittmann
392 WWUS75 KRIW 171136 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 536 AM MDT Mon Mar 17 2025 WYZ002-003-008-009-014-015-171245- /O.EXP.KRIW.HW.W.0008.000000T0000Z-250317T1200Z/ Absaroka Mountains-Cody Foothills-Bighorn Mountains West-Bighorn Mountains Southeast-Wind River Mountains West-Wind River Mountains East- Including the cities of Meeteetse, Cody, and Clark 536 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING... Winds continue to decrease across the area this morning, with gusts of 40 to 50 mph expected for a couple of hours. These winds will continue to decrease to gusts of 30 to 40 mph. Thus, the High Wind Warning will be allowed to expire. $$ WYZ019-020-171800- /O.CON.KRIW.HW.W.0008.000000T0000Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Casper and Jeffrey City 536 AM MDT Mon Mar 17 2025 ...HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON MDT TODAY... * WHAT...Southwest winds 35 to 45 mph with gusts up to 60 mph expected. * WHERE...Green Mountains and Rattlesnake Range and Natrona County Lower Elevations. * WHEN...Until noon MDT today. * IMPACTS...Travel could be difficult, especially for high profile vehicles, and along Outer Drive in Casper. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . LTL
782 WWUS75 KRIW 171814 NPWRIW URGENT - WEATHER MESSAGE National Weather Service Riverton WY 1214 PM MDT Mon Mar 17 2025 WYZ019-020-171915- /O.EXP.KRIW.HW.W.0008.000000T0000Z-250317T1800Z/ Green Mountains and Rattlesnake Range-Natrona County Lower Elevations- Including the cities of Casper and Jeffrey City 1214 PM MDT Mon Mar 17 2025 ...HIGH WIND WARNING HAS EXPIRED... While gusty winds will continue across central Wyoming this afternoon, winds are no longer expected to reach warning criteria. Thus the warning is allowed to expire at this time. $$ For more information from the National Weather Service, visit https://weather.gov/riw/ . Straub
What forecasters said that day
The local office's own words before this high wind 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 high wind warning went out at Mar 15, 11:24 AM MDT, 1 hour 53 minutes earlier. Its key messages:
- Light to moderate snow continues across the western mountains this weekend.
- A high wind event will ramp up for much of central Wyoming Sunday morning and continue into the day Monday.
- Chances are increasing for impactful winter storm across much of the area from Monday afternoon through Tuesday night.
Area forecast discussion, Mar 15, 11:24 AM MDT, 1 hour 53 minutes before
Area Forecast Discussion National Weather Service Riverton WY 1124 AM MDT Sat Mar 15 2025 .KEY MESSAGES... - Light to moderate snow continues across the western mountains this weekend. - A high wind event will ramp up for much of central Wyoming Sunday morning and continue into the day Monday. - Chances are increasing for impactful winter storm across much of the area from Monday afternoon through Tuesday night. && .DISCUSSION... Issued at 223 AM MDT Sat Mar 15 2025 Things have been active the past couple of days, and will continue to be active for the next several. As you know, this is March. And March weather tends to be very volatile for many areas, as this is the battle of the seasons with warmer air making more inroads and winter wanting to hang on for a while longer. And, although we will have mainly winter weather to deal with over the next several days, there may be a bit of warm weather impact to deal with. Warning: This discussion will be rather long with the amount of things going on. And, to compare it, we will relate this to something many people my age (I'm old) drove when we were younger, a stick shift, or manual transmission when relating to impacts. Today may be the slowest of the four days, so the car will be in first gear today, getting shifted into second at times. We still have some activity. The main culprit today will be a shortwave approaching from the west. Radar does show some snow showers across Idaho as I write this around 1:30 am and these will continue across the west through the day before tapering off somewhat after sunset as we lose the heating of the day. As for amounts, the NBM ensemble only gives at most a 1 out of 2 chance of 6 inches or more through 6 am Sunday and this would largely be in areas where impacts would be limited, like southwestern Yellowstone or in places where they want more snow, like the Ski Resorts, so no highlights will be issued. The HREF is a bit more bullish bit again, the highest totals would be in places with few impacts or that want the snow. Plus, this is March and people are used to this by now. Now on to the warmer weather concern. Since, we are heading into March, the sun is stronger and we can get some surface instability. Approximately the western half of our area has negative lifted indices and there is even up to 250 J/Kg of CAPE across the west. So, we have added some thunder to the forecast, closely following the Storm Prediction Center general outlook (they are the experts after all). Just about any area East of the Divide could see a shower, but pinpointing them is nearly impossible. So, we have gone with around 1 in 6 chance everywhere. Most places East of the Divide will stay dry most of the time though. With the low wet bulb zero temperatures, we could even see some graupel, snow pellets that look like small hail and form in convective clouds. The showers East of the Divide should end after sunset as we lose the heating of the day. Things get more active tomorrow, so we will press the clutch and shift up to third gear for this day. Another shortwave will be approaching the area from the west. The thing that will be ramping this up will be an 120 knot jet streak moving across our border with Montana. And this will do two things. First, in the west, the added jet dynamics and increased moisture will bring higher snowfall rates to northwestern Wyoming starting Sunday morning and continuing through the day before tapering off again in the evening. Guidance is a little more bullish on this system, giving a greater than 3 in 5 chance of over 6 inches of snow across the Tetons, much of Yellowstone Park and the western Absarokas. We may need some advisories here but we will hold off for now and let the day crew make the final decision. There should be another lull Sunday night after this. However, the main impact would be East of the Divide with the jet. We may be redlining the engine in third here, so we will shift up to fourth gear for impacts. Much of central Wyoming with be in the favored right front quadrant of the jet, enhancing downward forcing. The big thing I'm looking at though are the 700 millibar winds, which are very impressive, maxing out at 75 knots on Sunday evening. All areas will be breezy to windy though, as probabilistic guidance has almost all of our area in a near 100 percent chance to see wind gusts over 30 mph by later Sunday afternoon. Most of the areas in the High Wind Watch still have a greater than 1 in 2 chance of wind gusts past 60 mph as well. This could be a notable wind event, with some wind gusts to hurricane force at times in the wind prone areas like Wyoming Boulevard south of Casper, especially Sunday night when the strongest wind would occur. The southwest flow will keep things dry though, and also warm temperatures back to above normal levels. Wind should decrease somewhat Monday, but remain rather strong. Then we head toward Monday night and into Tuesday. And this is where we shift the engine into fifth gear or even overdrive as far as more widespread impacts are concerned. It is looking increasingly likely that we will see an impactful snowstorm across much of the area. A trough will move across the area, helping to induce lee cyclogenesis in Colorado. This will also turn flow north to northeasterly, enhancing upslope flow across much of the area, especially the favored areas like Buffalo, Thermopolis, Lander and Casper. At the same time, the area will be under the left front quadrant of an 120 knot jet, enhancing lift. Probabilistic guidance is rather impressed with this as well, showing a 1 in 2 chance or greater of 6 inches of snow or more across this area. This storm is still four days out though, and details and timing can change a bit. However, confidence is rising of a storm that could bring at least moderate impacts to travel around central Wyoming before it ends Tuesday night or Wednesday morning. Unsettled weather will continue after this as well, as another system may move into western Wyoming for Thursday or Friday. So, things are rather active right now, not unusual for the month of March. && .AVIATION /18Z TAFS THROUGH 18Z SUNDAY/... Issued at 1124 AM MDT Sat Mar 15 2025 West of the Divide...KBPI/KJAC/KPNA/KRKS Terminals An elongated axis of vorticity stretching across western Wyoming late Saturday morning has allowed for continued IFR/MVFR snow at KJAC. There should be slow improvement at KJAC by 21Z-23Z/Saturday as a ridge approaches from the west. Gusty southwest wind 12-25kts develops at KJAC during this timeframe, and instability favors convective snow showers until the sun sets around 01Z-02Z/Sunday. Other convective showers could produce brief IFR/MVFR at the remaining terminals from mid- afternoon until sunset Saturday. Gusty westerly surface wind persists at KRKS overnight, while other terminals see wind decrease by 03Z/Sunday. All terminals then move to VFR before warm air advection snow brings persistent snow to KJAC and KPNA beginning 09Z-12Z/Sunday. Mountain tops obscured. East of the Divide...KCOD/KCPR/KLND/KRIW/KWRL Terminals All terminals to be VFR through the forecast period. The exception will be the development of convective rain/snow showers by mid- afternoon Saturday, leaving a 3-4-hour period where all terminals but KCPR could see a brief MVFR shower. Otherwise, the main hazard will be gusty westerly surface wind through sunset Saturday, and then again by late Sunday morning. Gusty westerly wind persists overnight at KCPR and KCOD, with the latter seeing a period of LLWS given proximity to the Absaroka Foothills. Wind speeds rapidly increase to 25-40kts at KCPR between 14Z-18Z/Sunday. Gusty basin winds may not surface until around 18Z/Sunday, but all terminals will see at least 20-30kt wind by early Sunday afternoon. Mountain tops occasionally obscured along the Continental Divide. Please see the Aviation Weather Center and/or CWSU ZDV and ZLC for the latest information on smoke, icing, and turbulence forecasts. && .RIW WATCHES/WARNINGS/ADVISORIES... High Wind Watch from Sunday morning through late Sunday night for WYZ002-003. High Wind Watch from Sunday morning through Sunday evening for WYZ008-009-014-015. High Wind Watch from Sunday morning through Monday morning for WYZ019-020. && DISCUSSION...Hattings AVIATION...CNJ
Hazardous weather outlook, Mar 15, 2:33 AM MDT, 10 hours 44 minutes before
Hazardous Weather Outlook National Weather Service Riverton WY 233 AM MDT Sat Mar 15 2025 WYZ001>020-022>030-161300- Yellowstone National Park-Absaroka Mountains-Cody Foothills- North Bighorn Basin-Southwest Bighorn Basin-Southeast Bighorn Basin- Owl Creek and Bridger Mountains-Bighorn Mountains West- Bighorn Mountains Southeast-Northeast Johnson County- Southeast Johnson County-Teton and Gros Ventre Mountains- Jackson Hole-Wind River Mountains West-Wind River Mountains East- Upper Wind River Basin-Wind River Basin-Lander Foothills- Green Mountains and Rattlesnake Range- Natrona County Lower Elevations-Casper Mountain-Star Valley- Salt River and Wyoming Ranges-Upper Green River Basin Foothills- Upper Green River Basin-South Lincoln County- Rock Springs and Green River-Flaming Gorge-East Sweetwater County- 233 AM MDT Sat Mar 15 2025 ...HIGH WIND WATCH IN EFFECT FOR MUCH OF CENTRAL WYOMING FROM SUNDAY THROUGH MONDAY MORNING... This Hazardous Weather Outlook is for Western and Central Wyoming. .DAY ONE...Today and tonight. Light to possibly moderate snow for the western mountains. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Sunday through Monday morning...Strong to high wind possible for much of central Wyoming. Please see High Wind Watches and forecasts for details. Sunday...Moderate snow likely for the northwestern mountains. Monday afternoon through Tuesday night...An impactful winter storm is looking more likely across much of the area. Details of snow amounts and placement of heaviest snow remain somewhat uncertain. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.
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High Wind Warnings in Wyoming, 2025Every high wind warning in 2025
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.