Alert archive / North Dakota / Red Flag Warnings in 2021
Red Flag Warning 22, NWS Bismarck, ND
NWS Bismarck, ND issued this red flag warning at Aug 10, 2021, 3:02 AM MDT for 10 counties in North Dakota. It took effect at Aug 10, 2021, 12:00 PM MDT. It was in force for 8 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
- Aug 10, 2021, 3:02 AM MDT (09:02 UTC)
- In effect from
- Aug 10, 2021, 12:00 PM MDT
- Expired
- Aug 10, 2021, 7:59 PM MDT
- In force
- 8 hr
- Issued by
- NWS Bismarck, ND
Counties Adams County, ND, Billings County, ND, Bowman County, ND, Emmons County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Sioux County, ND, Slope County, ND, Stark County, ND
The radar
The Bismarck radar (KBIS), 136 km from the middle of the area, began a volume at 09:03 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
Bismarck Municip, ND (KBIS), launched 00:00Z, 9.0 hours before the alert went out and 140 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
- 296 J/kg
- Mixed-layer CIN
- -462 J/kg
- Mixed-layer LCL
- 1238 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
450 WWUS83 KBIS 100902 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 402 AM CDT Tue Aug 10 2021 ...RED FLAG WARNING FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EVENING... .Critical fire weather conditions are expected in southwest and far south central North Dakota this afternoon and evening. Expect relative humidity values to drop to around 15 to 20 percent, with westerly winds sustained around 20 to 25 mph and gusting up to 40 mph. A cold front will reach the area in the evening and shift winds to northwesterly. Any fires that ignite could spread rapidly and may become difficult to control or suppress. NDZ040-041-043-044-102115- /O.UPG.KBIS.FW.A.0013.210810T1800Z-210811T0400Z/ /O.NEW.KBIS.FW.W.0022.210810T1800Z-210811T0400Z/ Slope-Hettinger-Bowman-Adams- 302 AM MDT Tue Aug 10 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 10 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon today to 10 PM MDT this evening. The Fire Weather Watch is no longer in effect. * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ NDZ042-045-046-102115- /O.NEW.KBIS.FW.W.0022.210810T1800Z-210811T0400Z/ Grant-Sioux-Emmons- 402 AM CDT Tue Aug 10 2021 /302 AM MDT Tue Aug 10 2021/ ...RED FLAG WARNING IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 11 PM CDT /10 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 1 PM CDT /noon MDT/ this afternoon to 11 PM CDT /10 PM MDT/ this evening. * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ MJ
5 follow-up statements
677 WWUS83 KBIS 101112 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 612 AM CDT Tue Aug 10 2021 ...RED FLAG WARNING FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EVENING... .Critical fire weather conditions are expected in southwest and far south central North Dakota this afternoon and evening. Expect relative humidity values to drop to around 15 to 20 percent, with westerly winds sustained around 20 to 25 mph and gusting up to 40 mph. A cold front will reach the area in the evening and shift winds to northwesterly. Any fires that ignite could spread rapidly and may become difficult to control or suppress. NDZ040>046-102315- /O.CON.KBIS.FW.W.0022.210810T1800Z-210811T0400Z/ Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons- 612 AM CDT Tue Aug 10 2021 /512 AM MDT Tue Aug 10 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 11 PM CDT /10 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA... * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ MJ
955 WWUS83 KBIS 101725 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 1225 PM CDT Tue Aug 10 2021 ...RED FLAG WARNING FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EVENING... .Critical fire weather conditions are expected in southwest and far south central North Dakota this afternoon and evening. Expect relative humidity values to drop to around 15 to 20 percent, with westerly winds sustained around 20 to 25 mph and gusting up to 40 mph. A cold front will reach the area in the evening and shift winds to northwesterly. Any fires that ignite could spread rapidly and may become difficult to control or suppress. NDZ040>046-110400- /O.CON.KBIS.FW.W.0022.210810T1800Z-210811T0400Z/ Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons- 1225 PM CDT Tue Aug 10 2021 /1125 AM MDT Tue Aug 10 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM CDT /10 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA... * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ EDWARDS
089 WWUS83 KBIS 101852 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 152 PM CDT Tue Aug 10 2021 ...RED FLAG WARNING FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EVENING... .Critical fire weather conditions are expected in southwest and far south central North Dakota this afternoon and evening. Expect relative humidity values to drop to around 15 to 20 percent, with westerly winds sustained around 20 to 25 mph and gusting up to 40 mph. A cold front will reach the area in the evening and shift winds to northwesterly. Any fires that ignite could spread rapidly and may become difficult to control or suppress. NDZ031>033-110400- /O.EXA.KBIS.FW.W.0022.000000T0000Z-210811T0400Z/ Golden Valley-Billings-Stark- 1252 PM MDT Tue Aug 10 2021 ...RED FLAG WARNING IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 10 PM MDT this evening. * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ NDZ040>046-110400- /O.CON.KBIS.FW.W.0022.000000T0000Z-210811T0400Z/ Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons- 152 PM CDT Tue Aug 10 2021 /1252 PM MDT Tue Aug 10 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM CDT /10 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL... * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ EDWARDS
535 WWUS83 KBIS 102324 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 624 PM CDT Tue Aug 10 2021 ...RED FLAG WARNING FOR SOUTHWEST AND FAR SOUTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EVENING... .Critical fire weather conditions are expected to continue southwest and far south central North Dakota this afternoon and evening. Expect relative humidity values to drop to around 15 to 20 percent, with westerly winds sustained around 20 to 25 mph and gusting up to 40 mph. A cold front will reach the area in the evening and shift winds to northwesterly. Any fires that ignite could spread rapidly and may become difficult to control or suppress. NDZ031>033-040>046-110400- /O.CON.KBIS.FW.W.0022.000000T0000Z-210811T0400Z/ Golden Valley-Billings-Stark-Slope-Hettinger-Grant-Bowman-Adams- Sioux-Emmons- 624 PM CDT Tue Aug 10 2021 /524 PM MDT Tue Aug 10 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM CDT /10 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL... * WINDS...West 20 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 15 to 20 percent. * AFFECTED AREA...Southwest and far south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ ZH
014 WWUS83 KBIS 110159 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 859 PM CDT Tue Aug 10 2021 ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL... .Winds continue to diminish this evening and humidity values also continue to recover. Therefore the Red Flag Warning has been cancelled. NDZ031>033-040>046-110300- /O.CAN.KBIS.FW.W.0022.000000T0000Z-210811T0400Z/ Golden Valley-Billings-Stark-Slope-Hettinger-Grant-Bowman-Adams- Sioux-Emmons- 859 PM CDT Tue Aug 10 2021 /759 PM MDT Tue Aug 10 2021/ ...RED FLAG WARNING IS CANCELLED FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTHWEST AND FAR SOUTH CENTRAL... The National Weather Service in Bismarck has cancelled the Red Flag Warning. Winds continue to diminish this evening and humidity values also continue to recover. Therefore the Red Flag Warning has been cancelled. $$ ZH
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 6:27 PM MDT | Severe Thunderstorm Warning | BIS | Foster | 48 min |
| Aug 9, 6:35 PM MDT | Special Weather Statement | BIS | LaMoure | 25 min |
| Aug 9, 6:51 PM MDT | Severe Thunderstorm Warning | BIS | LaMoure, Stutsman | 24 min |
| Aug 9, 7:14 PM MDT | Severe Thunderstorm Warning | BIS | Foster | 31 min |
Nearby
Red Flag Warnings in North Dakota, 2021Every red flag warning in 2021
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.