Alert archive / Nebraska / Red Flag Warnings in 2026
Red Flag Warning 7, NWS Cheyenne, WY
NWS Cheyenne, WY issued this red flag warning at Mar 11, 2026, 1:09 PM MDT for 8 counties in Nebraska; 5 counties in Wyoming. It took effect at Mar 12, 2026, 11:00 AM MDT. It was in force for 57 hr. 60 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 11, 2026, 1:09 PM MDT (19:09 UTC)
- In effect from
- Mar 12, 2026, 11:00 AM MDT
- Expired
- Mar 14, 2026, 8:00 PM MDT
- In force
- 57 hr
- Issued by
- NWS Cheyenne, WY
Counties Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY
The radar
The Cheyenne radar (KCYS), 123 km from the middle of the area, began a volume at 19:07 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 12, 11:01 AM MDT | NON-TSTM WND GST 90 | 1 Nw Cheyenne, WY | ASOS station KCYS Cheyenne Airport - Cys. |
| Mar 12, 11:03 AM MDT | NON-TSTM WND GST 62 | 2 Ssw Sidney, NE | ASOS station KSNY Sidney Airport. |
| Mar 12, 11:05 AM MDT | NON-TSTM WND GST 71 | 6 Se South Greeley High, WY | Mesonet station FW0074 Cheyenne. |
| Mar 12, 11:06 AM MDT | NON-TSTM WND GST 75 | 8 S Chugwater, WY | Mesonet station WY40 7.5 S Chugwater (WYDOT). |
| Mar 12, 11:07 AM MDT | NON-TSTM WND GST 64 | 7 Sse Buford, WY | Mesonet station UR622 Harrm3. |
| Mar 12, 11:08 AM MDT | NON-TSTM WND GST 90 | 9 Se Buford, WY | Mesonet station UP204 Lynchw. |
| Mar 12, 11:15 AM MDT | NON-TSTM WND GST 61 | Terrytown, NE | Mesonet station GW2986 Scottsbluff. |
| Mar 12, 11:16 AM MDT | NON-TSTM WND GST 72 | 5 E Buford, WY | Mesonet station WY29 4.8 E Buford (WYDOT). |
| Mar 12, 11:16 AM MDT | NON-TSTM WND GST 78 | Gun Barrel, WY | Mesonet station KGUN Gun Barrel (WYDOT). |
| Mar 12, 11:19 AM MDT | NON-TSTM WND GST 96 | 11 Wsw Warren Af Base, WY | Mesonet station UP226 10.5 NW Natural Fort (UPR). |
| Mar 12, 11:20 AM MDT | NON-TSTM WND GST 61 | 2 Nne Esterbrook, WY | Mesonet station PC248 Esterbrook. |
| Mar 12, 11:20 AM MDT | NON-TSTM WND GST 66 | 6 E Buford, WY | Mesonet station UR474 Granws. |
| Mar 12, 11:20 AM MDT | NON-TSTM WND GST 83 | 7 Wsw South Greeley Hig, WY | Mesonet station UP229 7.6 N Natural Fort (UPR). |
| Mar 12, 11:21 AM MDT | NON-TSTM WND GST 61 | 6 S Albin, WY | Mesonet station UR343 6.0 S Albin (UPR). |
| Mar 12, 11:22 AM MDT | NON-TSTM WND GST 83 | 1 Sse Bordeaux, WY | Mesonet station KBRX 1.4 S Bordeaux (WYDOT). |
| Mar 12, 11:25 AM MDT | NON-TSTM WND GST 58 | 3 Ene Keeline, WY | Mesonet station UR362 3.2 E Keeline (UPR). |
| Mar 12, 11:26 AM MDT | NON-TSTM WND GST 58 | 2 Ene Yoder, WY | Mesonet station UR348 1.5 E Yoder (UPR). |
| Mar 12, 11:30 AM MDT | NON-TSTM WND GST 65 | 12 Sw Glenrock, WY | Mesonet station PC382 Banner Draw. |
| Mar 12, 11:31 AM MDT | NON-TSTM WND GST 62 | 4 E Scottsbluff, NE | ASOS station KBFF Scottsbluff Airport - Bff. |
| Mar 12, 11:32 AM MDT | NON-TSTM WND GST 63 | 8 W Lodgepole, NE | Mesonet station UP252 8.1 W Lodgepole (UPR). |
| Mar 12, 11:32 AM MDT | NON-TSTM WND GST 66 | 9 Sse Gun Barrel, WY | AWOS station K1AW Alpha. |
| Mar 12, 11:32 AM MDT | NON-TSTM WND GST 85 | 12 Wsw Warren Af Base, WY | Mesonet station WY38 11.8 S Federal (WYDOT). |
| Mar 12, 11:34 AM MDT | NON-TSTM WND GST 64 | 2 W Gering, NE | Mesonet station SBFN1 2 W Gering - Scotts Bluff. |
| Mar 12, 11:34 AM MDT | NON-TSTM WND GST 79 | 5 E Cheyenne, WY | Mesonet station CW2749 Cheyenne. |
| Mar 12, 11:35 AM MDT | NON-TSTM WND GST 81 | 2 S South Greeley High, WY | Mesonet station EW6745 Cheyenne. |
| Mar 12, 11:36 AM MDT | NON-TSTM WND GST 58 | 6 Nne Buford, WY | Mesonet station WY49 6.1 NE Buford (WYDOT). |
| Mar 12, 11:36 AM MDT | NON-TSTM WND GST 82 | 7 Wsw Warren Af Base, WY | Mesonet station WY39 6.7 W Warren Af Base (WYDOT). |
| Mar 12, 11:37 AM MDT | NON-TSTM WND GST 62 | 1 E Hillsdale, WY | Mesonet station UP015 5.7 W Burns (UPR). |
| Mar 12, 11:38 AM MDT | NON-TSTM WND GST 59 | 2 W Burns, WY | Mesonet station FW7016 Longmont. |
| Mar 12, 11:39 AM MDT | NON-TSTM WND GST 65 | 4 Nnw Warren Af Base, WY | Mesonet station GW6833 CHEYENNE. |
| Mar 12, 11:39 AM MDT | NON-TSTM WND GST 75 | 5 Wsw Douglas, WY | Mesonet station DW7426 Douglas. |
| Mar 12, 11:40 AM MDT | NON-TSTM WND GST 57 | 5 Ne Brownson, NE | Mesonet station NB058 Sidney 2NW. |
| Mar 12, 11:42 AM MDT | NON-TSTM WND GST 59 | 3 N Douglas, WY | ASOS station KDGW Douglas Airport - Dgw. |
| Mar 12, 11:45 AM MDT | NON-TSTM WND GST 59 | 6 S Douglas, WY | Mesonet station EW6313 Douglas. |
| Mar 12, 11:45 AM MDT | NON-TSTM WND GST 60 | 3 Wnw Brownson, NE | Mesonet station UP286 2.9 NW Brownson (UPR). |
| Mar 12, 11:45 AM MDT | NON-TSTM WND GST 66 | Terrytown, NE | Mesonet station GW2986 Scottsbluff. |
| Mar 12, 11:46 AM MDT | NON-TSTM WND GST 57 | 8 Nnw Glendo, WY | Mesonet station WY56 I25 Us26 Us87 - Platte Converse. |
| Mar 12, 11:46 AM MDT | NON-TSTM WND GST 66 | 7 Sw Federal, WY | Mesonet station WY48 7.4 SW Federal (WYDOT). |
| Mar 12, 11:46 AM MDT | NON-TSTM WND GST 87 | 6 Sw South Greeley High, WY | Mesonet station KWYH 6.5 N Natural Fort (WYDOT). |
| Mar 12, 11:47 AM MDT | NON-TSTM WND GST 68 | 2 E Torrington, WY | ASOS station KTOR Torrington Airport - Tor. |
| Mar 12, 11:51 AM MDT | NON-TSTM WND GST 92 | 1 Nw Cheyenne, WY | ASOS station KCYS Cheyenne Airport - Cys. |
| Mar 12, 11:52 AM MDT | NON-TSTM WND GST 65 | 8 S Sibley Peak, WY | Mesonet station WY1 8.4 S Sibley Peak (WYDOT). |
| Mar 12, 12:00 PM MDT | NON-TSTM WND GST 56 | 3 Nnw Warren Af Base, WY | Mesonet station HPGRS Hpgrs. |
| Mar 12, 12:02 PM MDT | NON-TSTM WND GST 58 | 1 S Glenrock, WY | Mesonet station KDRC I-25 Glenrock (DOT). |
| Mar 12, 12:05 PM MDT | NON-TSTM WND GST 60 | 3 Wnw Brownson, NE | Mesonet station UP286 2.9 NW Brownson (UPR). |
| Mar 12, 12:06 PM MDT | NON-TSTM WND GST 58 | 8 Nnw Glendo, WY | Mesonet station WY56 I25 Us26 Us87 - Platte Converse. |
| Mar 12, 12:09 PM MDT | NON-TSTM WND GST 60 | 1 Ese Guernsey, WY | AWOS station KGUR Guernsey. |
| Mar 12, 12:13 PM MDT | NON-TSTM WND GST 56 | 2 Ene Yoder, WY | Mesonet station UR348 1.5 E Yoder (UPR). |
| Mar 12, 12:15 PM MDT | NON-TSTM WND GST 57 | 6 S Douglas, WY | Mesonet station EW6313 Douglas. |
| Mar 12, 12:15 PM MDT | NON-TSTM WND GST 58 | 2 Nne Harrisburg, NE | Mesonet station NB092 Harrisburg 1N. |
| Mar 12, 12:15 PM MDT | NON-TSTM WND GST 58 | 5 Ne Brownson, NE | Mesonet station NB058 Sidney 2NW. |
| Mar 12, 12:15 PM MDT | NON-TSTM WND GST 60 | 2 Ene Wheatland, WY | AWOS station KEAN 1 ENE Wheatland. |
| Mar 12, 12:16 PM MDT | NON-TSTM WND GST 62 | 6 S Albin, WY | Mesonet station UR343 6.0 S Albin (UPR). |
| Mar 12, 12:16 PM MDT | NON-TSTM WND GST 62 | 7 Wnw Lorenzo, NE | Mesonet station FW8225 Sidney. |
| Mar 12, 12:17 PM MDT | NON-TSTM WND GST 61 | 1 E Dix, NE | Mesonet station UP261 0.9 E Dix (UPR). |
| Mar 12, 12:17 PM MDT | NON-TSTM WND GST 62 | 5 Sse La Grange, WY | Mesonet station UR342 5.3 SE La Grange (UPR). |
| Mar 12, 12:18 PM MDT | NON-TSTM WND GST 68 | 2 W Burns, WY | Mesonet station FW7016 Longmont. |
| Mar 12, 12:19 PM MDT | NON-TSTM WND GST 61 | 3 N Douglas, WY | ASOS station KDGW Douglas Airport - Dgw. |
| Mar 12, 12:20 PM MDT | NON-TSTM WND GST 59 | 4 Nnw Warren Af Base, WY | Mesonet station GW6833 CHEYENNE. |
| Mar 12, 12:20 PM MDT | NON-TSTM WND GST 65 | 2 Nne Esterbrook, WY | Mesonet station PC248 Esterbrook. |
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, 7.2 hours before the alert went out and 383 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
- 1621 m above ground
- 0-6 km bulk shear
- 101 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 183 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
546 WWUS85 KCYS 111909 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 109 PM MDT Wed Mar 11 2026 NEZ434>437-121200- /O.NEW.KCYS.FW.W.0007.260312T1700Z-260313T0300Z/ Pine Ridge/Nebraska National Forest- Box Butte/South Sioux/Niobrara River- Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- 109 PM MDT Wed Mar 11 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM MDT THURSDAY FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 434, 435, 436, AND 437... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 11 AM to 9 PM MDT Thursday. * AFFECTED AREA...Fire weather zones 434 through 437. * WIND...West winds 30 to 50 mph, with gusts up 75 mph. * HUMIDITY...Between 17 and 22 percent. * HIGHEST THREAT...is located along the I-80 corridor. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
8 follow-up statements
908 WWUS85 KCYS 121739 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 1139 AM MDT Thu Mar 12 2026 WYZ430>433-130300- /O.EXB.KCYS.FW.W.0007.000000T0000Z-260315T0000Z/ Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 1139 AM MDT Thu Mar 12 2026 ...RED FLAG WARNING IN EFFECT UNTIL 6 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 430, 431, 432, AND 433... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect until 6 PM MDT Saturday. * AFFECTED AREA...Fire weather zones 430 through 433. * WIND...West winds 30 to 50 mph, with gusts up to 90 mph on Thursday; West winds 25 to 45 mph and gusts up to 70 mph Friday and Saturday. * HUMIDITY...Between 15 and 22 percent. Overnight recoveries as low as 39 precent. * HIGHEST THREAT...is located along the I-80 corridor. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ WYZ417-418-130300- /O.EXA.KCYS.FW.W.0007.000000T0000Z-260313T0300Z/ Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- Middle North Platte River Basin/Niobrara and Converse High Plains- 1139 AM MDT Thu Mar 12 2026 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 417 AND 418... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect until 9 PM MDT this evening. * AFFECTED AREA...Fire weather zones 417 and 418. * WIND...West winds 30 to 50 mph, with gusts up 80 mph. * HUMIDITY...Between 17 and 22 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NEZ436-437-130300- /O.EXT.KCYS.FW.W.0007.000000T0000Z-260315T0000Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- 1139 AM MDT Thu Mar 12 2026 ...RED FLAG WARNING NOW IN EFFECT UNTIL 6 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 436 AND 437... * AFFECTED AREA...Fire weather zones 436 and 437. * WIND...West winds 30 to 50 mph, with gusts up 75 mph. * HUMIDITY...Between 15 and 22 percent. * HIGHEST THREAT...is located along the I-80 corridor. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NEZ434-435-130300- /O.CON.KCYS.FW.W.0007.000000T0000Z-260313T0300Z/ Pine Ridge/Nebraska National Forest- Box Butte/South Sioux/Niobrara River- 1139 AM MDT Thu Mar 12 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 434 AND 435... * AFFECTED AREA...Fire weather zones 434 and 435. * WIND...West winds 30 to 50 mph, with gusts up 75 mph. * HUMIDITY...Between 17 and 22 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
230 WWUS85 KCYS 130233 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 833 PM MDT Thu Mar 12 2026 NEZ434-435-WYZ417-418-130345- /O.EXP.KCYS.FW.W.0007.000000T0000Z-260313T0300Z/ Pine Ridge/Nebraska National Forest- Box Butte/South Sioux/Niobrara River- Niobrara/Lower Elevations of Converse/Thunder Basin National Grassland- Middle North Platte River Basin/Niobrara and Converse High Plains- 833 PM MDT Thu Mar 12 2026 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 434 AND 435... Relative humidities have steadily increased this evening even as winds remain elevated. Winds are expected to diminish through midnight tonight. Therefore, the Red Flag Warning will be allowed to expire on time. $$ NEZ436-437-WYZ430>433-131345- /O.CON.KCYS.FW.W.0007.000000T0000Z-260315T0000Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 833 PM MDT Thu Mar 12 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 436 AND 437... * AFFECTED AREA...Fire weather zones 436 and 437. * WIND...West winds 30 to 50 mph, with gusts up 75 mph. * HUMIDITY...Between 15 and 22 percent. * NIGHTTIME RECOVERIES...Between 30 to 45 percent. Some locations near Interstate 25 may be as low as 20 percent early Saturday morning. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
580 WWUS85 KCYS 130654 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 1254 AM MDT Fri Mar 13 2026 NEZ436-437-WYZ430>433-140000- /O.CON.KCYS.FW.W.0007.000000T0000Z-260315T0000Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 1254 AM MDT Fri Mar 13 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 6 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RH FOR FIRE WEATHER ZONES 430, 431, 432, 433, 436 AND 437... * AFFECTED AREA...Fire weather zones 430, 431, 432, 433, 436, and 437. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 15 and 22 percent. * NIGHTTIME RECOVERIES...Between 30 to 45 percent. Some locations near Interstate 25 may be as low as 20 percent early Saturday morning. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
772 WWUS85 KCYS 132013 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 213 PM MDT Fri Mar 13 2026 NEZ435-WYZ418-140415- /O.EXB.KCYS.FW.W.0007.260314T1600Z-260315T0200Z/ Box Butte/South Sioux/Niobrara River- Middle North Platte River Basin/Niobrara and Converse High Plains- 213 PM MDT Fri Mar 13 2026 ...RED FLAG WARNING IN EFFECT FROM 10 AM TO 8 PM MDT SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 418 AND 435... The National Weather Service in Cheyenne has issued a Red Flag Warning, which is in effect from 10 AM to 8 PM MDT Saturday. * AFFECTED AREA...Fire weather zones 418 and 435. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 13 and 18 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NEZ436-437-WYZ430>433-140415- /O.EXT.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 213 PM MDT Fri Mar 13 2026 ...RED FLAG WARNING NOW IN EFFECT UNTIL 8 PM MDT SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 430, 431, 432, 433, 436, AND 437... * AFFECTED AREA...Fire weather zones 430, 431, 432, 433, 436, and437. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 15 and 22 percent. * NIGHTTIME RECOVERIES...Between 30 to 45 percent. Some locations near Interstate 25 may be as low as 20 percent early Saturday morning. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
725 WWUS85 KCYS 132210 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 410 PM MDT Fri Mar 13 2026 NEZ436-437-WYZ430>433-141200- /O.CON.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 410 PM MDT Fri Mar 13 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 430, 431, 432, 433, 436, AND 437... * AFFECTED AREA...Fire weather zones 430, 431, 432, 433, 436, and 437. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 15 and 22 percent. * NIGHTTIME RECOVERIES...Between 30 to 45 percent. Some locations near Interstate 25 may be as low as 20 percent early Saturday morning. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NEZ435-WYZ418-141200- /O.CON.KCYS.FW.W.0007.260314T1600Z-260315T0200Z/ Box Butte/South Sioux/Niobrara River- Middle North Platte River Basin/Niobrara and Converse High Plains- 410 PM MDT Fri Mar 13 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM MDT SATURDAY FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 418 AND 435... * AFFECTED AREA...Fire weather zones 418 and 435. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 13 and 18 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
592 WWUS85 KCYS 140745 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 145 AM MDT Sat Mar 14 2026 NEZ436-437-WYZ430>433-150000- /O.CON.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 145 AM MDT Sat Mar 14 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 430, 431, 432, 433, 436, AND 437... * AFFECTED AREA...Fire weather zones 430, 431, 432, 433, 436, and 437. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 13 and 18 percent. * NIGHTTIME RECOVERIES...Between 30 to 45 percent. Some locations near Interstate 25 may be as low as 20 percent early Saturday morning. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NEZ435-WYZ418-150000- /O.CON.KCYS.FW.W.0007.260314T1600Z-260315T0200Z/ Box Butte/South Sioux/Niobrara River- Middle North Platte River Basin/Niobrara and Converse High Plains- 145 AM MDT Sat Mar 14 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 418 AND 435... * AFFECTED AREA...Fire weather zones 418 and 435. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 13 and 18 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
865 WWUS85 KCYS 141956 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 156 PM MDT Sat Mar 14 2026 NEZ436-437-WYZ430>433-150200- /O.CON.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 156 PM MDT Sat Mar 14 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 430, 431, 432, 433, 436, AND 437... * AFFECTED AREA...Fire weather zones 430, 431, 432, 433, 436, and 437. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 13 and 18 percent. * NIGHTTIME RECOVERIES...Between 30 to 45 percent. Some locations near Interstate 25 may be as low as 20 percent early Saturday morning. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NEZ435-WYZ418-150200- /O.CON.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Box Butte/South Sioux/Niobrara River- Middle North Platte River Basin/Niobrara and Converse High Plains- 156 PM MDT Sat Mar 14 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 418 AND 435... * AFFECTED AREA...Fire weather zones 418 and 435. * WIND...West winds 30 to 45 mph, with gusts up 70 mph. * HUMIDITY...Between 13 and 18 percent. * IMPACTS...any fires that develop will likely spread rapidly. Outdoor burning is not recommended. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
232 WWUS85 KCYS 150136 RFWCYS URGENT - FIRE WEATHER MESSAGE National Weather Service Cheyenne WY 736 PM MDT Sat Mar 14 2026 NEZ436-437-WYZ430>433-150245- /O.EXP.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Lower North Platte River Basin/Scottsbluff National Monument- Lodgepole Creek/Southern Nebraska Panhandle- Laramie Foothills and High Plains-Laramie East High Plains- Bordeaux/Chugwater/Wheatland-Goshen/Middle- Lower North Platte River Basin- 736 PM MDT Sat Mar 14 2026 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... Although very windy conditions will continue tonight and Sunday, relative humidities will increase sharply being a surface cold front this evening and for the rest of tonight. Snow accumulations are expected as well. Therefore, the Red Flag Warning is allowed to expire on time this evening. $$ NEZ435-WYZ418-150245- /O.EXP.KCYS.FW.W.0007.000000T0000Z-260315T0200Z/ Box Butte/South Sioux/Niobrara River- Middle North Platte River Basin/Niobrara and Converse High Plains- 736 PM MDT Sat Mar 14 2026 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR FIRE WEATHER ZONES 418 AND 435... Although very windy conditions will continue tonight and Sunday, relative humidities will increase sharply being a surface cold front this evening and for the rest of tonight. Snow accumulations are expected as well. Therefore, the Red Flag Warning is allowed to expire on time this evening. $$
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this red flag warning went out at Mar 11, 11:48 AM MDT, 1 hour 21 minutes earlier. Its key messages:
- A widespread, locally damaging wind event is still on track for Thursday. Widespread gusts of 60 to 80 mph are possible, with potential for localized gusts up to 100 mph in the wind prone areas across southeast Wyoming.
- Very strong winds are expected to continue through at least Saturday ahead of the next chance for precipitation Saturday into Sunday.
Area forecast discussion, Mar 11, 11:48 AM MDT, 1 hour 21 minutes before
Area Forecast Discussion...CORRECTED
National Weather Service Cheyenne WY
1148 AM MDT Wed Mar 11 2026
.KEY MESSAGES...
- A widespread, locally damaging wind event is still on track
for Thursday. Widespread gusts of 60 to 80 mph are possible,
with potential for localized gusts up to 100 mph in the wind
prone areas across southeast Wyoming.
- Very strong winds are expected to continue through at least
Saturday ahead of the next chance for precipitation Saturday
into Sunday.
&&
.SHORT TERM /THROUGH SATURDAY NIGHT/...
Issued at 337 AM MDT Wed Mar 11 2026
Some lingering snow showers will be possible this morning as the
upper-level trough makes its way eastward into the center of the
country. An additional dusting of snow will be possible, but
accumulations are not likely. Behind the trough, temperatures will
be much cooler compared to the last few days. 700 mb temperatures
will be around -10C, leading to high temperatures in the 30s and 40s
despite clearing skies during the afternoon. Snow cover will also
contribute to the cooler high temperatures. The rest of the daytime
will be relatively uneventful aside from some breezy conditions.
Heading into Wednesday night, the 250 mb jet will move into the CWA,
with winds increasing and high winds likely beginning overnight for
much of southeast Wyoming.
Thursday will mark the start of a prolonged high wind event, with
the strongest winds also expected during the day. High Wind Watches
are in place for most of the CWA, with the exception of the Sierra
Madre and Snowy Ranges as well as southwest Carbon County.
Confidence is high in this being a widespread and impactful high
wind event, so upgrades to the High Wind Watches are extremely
likely. The powerful upper-level jet in the vicinity of the CWA will
contribute to the strong winds, but a strong MSLP gradient will also
add to the intensity. One of the most impressive parameters
continues to be the CAG to CPR height gradients. Both the 850 and
700 mb height gradients will max out over 100 meters Thursday
morning, which is some of the highest values seen in recent memory.
Values like these will lead to an unprecedented high wind event.
Unsurprisingly, these hefty gradients will lead to
exceptionally strong winds aloft. The GFS has consistently shown
700 mb winds over 80 kts for the last few days, with the most
recent 00Z run of the GFS showing 90 kt winds over the South
Laramie Range. Remarkably strong subsidence will also be present
over the typical wind prones that also extend into the
Interstate 25 corridor. Combined with a textbook mountain wave
signature, these winds should have no problem making it down to
the surface. Strongest wind gusts are expected in the wind prone
areas of southeast Wyoming. 80 to 90 MPH gusts are likely in
the Arlington, Bordeaux, Coleman, and South Laramie Range and
foothills areas. Cannot rule out occasional gusts to 100 MPH in
these areas as well as the North Laramie Range. Outside of the
wind prones, 80 MPH wind gusts will be possible in much of
southeast Wyoming. Wind gusts in excess of 70 MPH will also be
likely in the Nebraska panhandle. Winds will ease Thursday
evening as a cold front moves across the area. Winds will turn
out of the north, effectively shutting off high winds in far
eastern Wyoming and the Nebraska panhandle. Areas along the
Interstate 25 corridor and westward will not be as lucky as the
front gets caught along the Laramie Range. High winds will
likely continue in these areas, but will be weaker than winds
during the day Thursday.
High winds will continue into Friday and Saturday for the southeast
Wyoming wind prones and adjacent areas. Gradients will stay steep
through Saturday with winds aloft consistently staying above 65 kts.
Subsidence also remains strong, helping these winds get down to the
surface. High Wind Watches for these areas remain in place through
Saturday evening. Winds will eventually weaken once a strong cold
front moves across the area.
&&
.LONG TERM /SUNDAY THROUGH TUESDAY/...
Issued at 202 PM MDT Tue Mar 10 2026
The past several runs of guidance have trended upward with the
chances for precipitation from Saturday night through Sunday.
The potent Pacific jet stream will carry a weak trough/vort max
into the PACNW coast on Friday into Saturday, which will quickly
traverse the Rockies and deepen as it heads toward the high
plains. Ensemble forecast guidance has come into better
agreement with regard to a strong cold front surging southward
with this system late on Saturday into Sunday, which will affect
the entire northern Rockies/High Plains region. As this front
dives southward and the aforementioned trough moves in from the
northwest, forecast soundings show increasing saturation in the
boundary layer on Saturday night with somewhat favorable upslope
northerly and possibly northeasterly flow for most of the
Laramie and Snowy ranges as well as the eastern high plains.
Total QPF averages from the GEFS particularly have increased,
whereas ECMWF ensemble guidance averages remain a bit lower.
Still, there is increasing confidence that a light snow event
may affect much of the area on Saturday night through Sunday in
a very cold, post-frontal airmass. Advisory-level accumulations
may be in the works for both the higher terrain and possibly
areas along and east of I-25. Very high confidence exists in
below-average temperatures for Sunday, possibly lasting into
early next week before temperatures rebound.
&&
.AVIATION /18Z TAFS THROUGH 18Z THURSDAY/...
Issued at 1111 AM MDT Wed Mar 11 2026
Minimal aviation concerns today, with VFR conditions prevailing
across all terminals. Wind gusts of over 30 kts will be
possible in southeast Wyoming and west Nebraska. Sustained winds
generally at 10 to 15 kts out of the west-southwest except for
at Rawlins where sustained winds of 25 kts are possible. Winds
drop off in the evening, however a near surface inversion will
impart wind shear at all terminals starting around 06-09Z. Some
low-level shear vectors of 50-65 kts out of the west are
possible. At the end of the forecast period surface winds
greatly increase at all terminals.
&&
.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Warning from midnight tonight to midnight MDT
Saturday night for WYZ101-103>107-109-113-115>118.
High Wind Warning from 6 AM Thursday to midnight MDT Thursday
night for WYZ102-108-119.
High Wind Warning from 6 PM this evening to midnight MDT
Saturday night for WYZ110.
NE...High Wind Warning from 9 AM to 9 PM MDT Thursday for NEZ002-
003-019>021-054-055-095-096.
&&
SHORT TERM...SF
LONG TERM...MAC
AVIATION...CG/RVHazardous weather outlook, Mar 11, 3:43 AM MDT, 9 hours 26 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 343 AM MDT Wed Mar 11 2026 NEZ002-003-019>021-054-055-095-096-WYZ101>119-120945- Dawes County-Box Butte County-Scotts Bluff County-Banner County- Morrill County-Kimball County-Cheyenne County- Northern Sioux County-Southern Sioux County- Converse County Lower Elevations-Niobrara County- North Laramie Range-Ferris/Seminoe/Shirley Mountains- Shirley Basin-Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County-East Laramie County- 343 AM MDT Wed Mar 11 2026 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TODAY AND TONIGHT - Winds will increase throughout the day today, with high winds starting overnight. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY - A widespread, locally damaging wind event is still on track for Thursday. Widespread gusts of 60 to 80 mph are possible, with potential for localized gusts up to 100 mph in the wind prone areas across southeast Wyoming. - Very strong winds are expected to continue through at least Saturday ahead of the next chance for precipitation Saturday into Sunday. .Spotter information statement... Spotter activation will not be needed.
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 10:39 AM MDT | High Wind Warning | CYS | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 4 days |
| Mar 10, 7:17 PM MDT | Winter Weather Advisory | CYS | Albany, Carbon, Laramie | 12 hr |
Nearby
Red Flag Warnings in Nebraska, 2026Red Flag Warnings in Wyoming, 2026Every red flag warning in 2026
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.