Severe

Significant threat to life or property

South Dakota Red Flag Warning | Effective 04/21/2026 23:17

* AFFECTED AREA...In South Dakota, Dewey, Potter, Faulk, Spink,<br /> Stanley, Sully, Hughes, Hyde, Hand, Jones, Lyman and Buffalo. * WINDS...South 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 15 percent. * IMPACTS...Any fires that ignite will spread rapidly and become<br /> difficult to control or suppress.<br /> A Red Flag Warning means that critical fire weather conditions<br /> are either occurring now, or will shortly. A combination of<br /> strong winds, low relative humidity, and warm temperatures can<br />

Minnesota, South Dakota Red Flag Warning | Effective 04/21/2026 23:17

* AFFECTED AREA...In Minnesota, Big Stone. In South Dakota,<br /> Clark, Codington, Grant, Hamlin and Deuel. * WINDS...South 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 22 percent. * IMPACTS...Any fires that ignite will spread rapidly and become<br /> difficult to control or suppress.<br /> A Red Flag Warning means that critical fire weather conditions<br /> are either occurring now, or will shortly. A combination of<br /> strong winds, low relative humidity, and warm temperatures can<br /> contribute to extreme fire behavior.

Colorado Red Flag Warning | Effective 04/21/2026 23:20

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO<br /> MIDNIGHT MDT TONIGHT FOR FIRE WEATHER ZONE 220... * THIS IS A PARTICULARLY DANGEROUS SITUATION * AFFECTED AREA...Fire Weather Zone 220. * TIMING...From 10 AM this morning to midnight MDT tonight. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 8 percent. * IMPACTS...Extreme fire danger is expected. Fires will<br /> uncontrollably spread and be very destructive.<br /> This is a Particularly Dangerous Situation that poses a<br />

Colorado Red Flag Warning | Effective 04/21/2026 23:20

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO<br /> MIDNIGHT MDT TONIGHT FOR FIRE WEATHER ZONES 221, 222, 224, 225,<br /> 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, AND 237...<br /> ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM MDT THURSDAY FOR<br /> FOR FIRE WEATHER ZONES 221, 222, 224, 225, 226, 227, 228, 229,<br /> 230, 231, 232, 233, 234, 235, 236, AND 237... The National Weather Service in Pueblo has issued a Red Flag<br /> Warning for gusty winds and low relative humidity, which is in<br />

Colorado Red Flag Warning | Effective 04/21/2026 23:20

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO<br /> MIDNIGHT MDT TONIGHT FOR FIRE WEATHER ZONES 221, 222, 224, 225,<br /> 226, 227, 228, 229, 230, 231, 232, 233, 234, 235, 236, AND 237...<br /> ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 9 PM MDT THURSDAY FOR<br /> FOR FIRE WEATHER ZONES 221, 222, 224, 225, 226, 227, 228, 229,<br /> 230, 231, 232, 233, 234, 235, 236, AND 237... The National Weather Service in Pueblo has issued a Red Flag<br /> Warning for gusty winds and low relative humidity, which is in<br />

Oklahoma, Texas Fire Weather Watch | Effective 04/21/2026 22:51

* WINDS...West 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 7 percent. * TEMPERATURES...In the mid 80s. * IMPACTS...Any fires that develop will have the potential to<br /> spread rapidly. Outdoor burning is not recommended. * SEVERITY... FUELS (ERC)...70th-89th percentile...4 (out of 5). WEATHER...Critical...3 (out of 5). FIRE ENVIRONMENT...7 (out of 10).<br /> A Fire Weather Watch means that the potential for critical fire<br /> weather conditions exists. Listen for later forecasts and<br /> possible red flag warnings.

Oklahoma, Texas Fire Weather Watch | Effective 04/21/2026 22:51

* WINDS...Today. Southwest 15 to 25 mph with gusts up to 35 mph.<br /> Thursday. West southwest winds 20 to 30 mph with gusts up to 40<br /> mph. * RELATIVE HUMIDITY...Today. As low as 7 percent. Thursday. As low<br /> as 5 percent. * TEMPERATURES...Today. In the upper 80s. Thursday in the mid 80s<br /> to lower 90s. * IMPACTS...Any fires that develop will have the potential to<br /> spread rapidly. Outdoor burning is not recommended. * SEVERITY... FUELS (ERC)...70th-89th percentile...4 (out of 5). WEATHER...Near Critical...2 (out of 5).

Oklahoma, Texas Red Flag Warning | Effective 04/21/2026 22:51

* WINDS...Today. Southwest 15 to 25 mph with gusts up to 35 mph.<br /> Thursday. West southwest winds 20 to 30 mph with gusts up to 40<br /> mph. * RELATIVE HUMIDITY...Today. As low as 7 percent. Thursday. As low<br /> as 5 percent. * TEMPERATURES...Today. In the upper 80s. Thursday in the mid 80s<br /> to lower 90s. * IMPACTS...Any fires that develop will have the potential to<br /> spread rapidly. Outdoor burning is not recommended. * SEVERITY... FUELS (ERC)...70th-89th percentile...4 (out of 5). WEATHER...Near Critical...2 (out of 5).

Colorado, Wyoming Red Flag Warning | Effective 04/21/2026 22:53

* AFFECTED AREA...Fire Weather Zone 215. * TIMING...From 10 AM Wednesday to midnight MDT Wednesday night. * WINDS...West 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...5 to 8 percent. * IMPACTS...Conditions will be favorable for rapid fire spread.<br /> Avoid outdoor burning and any activity that may produce a<br /> spark and start a wildfire.<br /> A Red Flag Warning means that critical fire weather conditions<br /> are either occurring now....or will shortly. A combination of<br />

Colorado Fire Weather Watch | Effective 04/21/2026 22:53

* AFFECTED AREA...Fire Weather Zones 214, 216, 238, 239, 240,<br /> 241, 242, 243, 244, 245, 246, 247, 248, 249, 250 and 251. * TIMING...For the Red Flag Warning, from 10 AM Wednesday to<br /> midnight MDT Wednesday night. For the Fire Weather Watch, from<br /> Thursday morning through Thursday evening. * WINDS...For the Red Flag Warning, west 20 to 30 mph with gusts<br /> up to 45 mph. For the Fire Weather Watch, northwest winds<br /> gusting up to 50 mph. * RELATIVE HUMIDITY...For the Red Flag Warning, 5 to 8 percent.<br />
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