Alert archive / North Dakota / Red Flag Warnings in 2021
Red Flag Warning 3, NWS Bismarck, ND
NWS Bismarck, ND issued this red flag warning at Mar 21, 2021, 3:09 AM MDT for 21 counties in North Dakota. It took effect at Mar 21, 2021, 12:00 PM MDT. It was in force for 7 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
- Mar 21, 2021, 3:09 AM MDT (09:09 UTC)
- In effect from
- Mar 21, 2021, 12:00 PM MDT
- Expired
- Mar 21, 2021, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Bismarck, ND
All 21 counties
Adams County, ND, Bottineau County, ND, Burke County, ND, Burleigh County, ND, Divide County, ND, Dunn County, ND, Emmons County, ND, Grant County, ND, Hettinger County, ND, McHenry County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Sioux County, ND, Stark County, ND, Ward County, ND, Williams County, ND
The radar
The Bismarck radar (KBIS), 115 km from the middle of the area, began a volume at 09:10 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, 9.2 hours before the alert went out and 119 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
- 2361 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
714 WWUS83 KBIS 210909 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 409 AM CDT Sun Mar 21 2021 ...RED FLAG WARNING FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected across northwest and north central North Dakota this afternoon through early evening. Northwest winds will reach sustained speeds around 25 mph during this afternoon as a very dry air mass begins to move into northwest North Dakota. The drier air will reach north central parts of the state by late afternoon. Relative humidity is forecast to rapidly fall to around 20 percent by mid afternoon in the northwest, and late afternoon in the north central. NDZ001>004-009>012-017>019-021-212115- /O.NEW.KBIS.FW.W.0003.210321T1800Z-210322T0100Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-McLean- 409 AM CDT Sun Mar 21 2021 /309 AM MDT Sun Mar 21 2021/ ...RED FLAG WARNING IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHWEST AND NORTH 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 8 PM CDT /7 PM MDT/ this evening. * WINDS...Northwest around 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 18 percent. * AFFECTED AREA...Northwest and north 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. && $$ Hollan
5 follow-up statements
650 WWUS83 KBIS 211432 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 932 AM CDT Sun Mar 21 2021 ...RED FLAG WARNING FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected across northwest and north central North Dakota this afternoon through early evening. Northwest winds will reach sustained speeds around 25 mph during this afternoon as a very dry air mass begins to move into northwest North Dakota. The drier air will reach north central parts of the state by late afternoon. Relative humidity is forecast to rapidly fall to around 20 percent by mid afternoon in the northwest, and late afternoon in the north central. NDZ001>004-009>012-017>019-021-220100- /O.CON.KBIS.FW.W.0003.210321T1800Z-210322T0100Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-McLean- 932 AM CDT Sun Mar 21 2021 /832 AM MDT Sun Mar 21 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA... * WINDS...Northwest around 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 18 percent. * AFFECTED AREA...Northwest and north central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ ZH
770 WWUS83 KBIS 211758 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 1258 PM CDT Sun Mar 21 2021 ...RED FLAG WARNING FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected across northwest and north central North Dakota this afternoon through early evening. Northwest winds will reach sustained speeds around 25 mph during this afternoon as a very dry air mass begins to move into northwest North Dakota. The drier air will reach north central parts of the state by late afternoon. Relative humidity is forecast to rapidly fall to around 20 percent by mid afternoon in the northwest, and late afternoon in the north central. NDZ001>004-009>012-017>019-021-220100- /O.CON.KBIS.FW.W.0003.210321T1800Z-210322T0100Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-McLean- 1258 PM CDT Sun Mar 21 2021 /1158 AM MDT Sun Mar 21 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA... * WINDS...Northwest around 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 18 percent. * AFFECTED AREA...Northwest and north 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. && $$ ZH
270 WWUS83 KBIS 211924 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 224 PM CDT Sun Mar 21 2021 ...RED FLAG WARNING FOR NORTHWEST AND MUCH OF CENTRAL NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected across northwest and much of central North Dakota this afternoon through early evening. Northwest winds will reach sustained speeds up to 30 mph during this afternoon as a very dry air mass begins to move into northwest North Dakota. Relative humidity is forecast will dip as low as 18 percent. NDZ020-033-034-041-042-220100- /O.EXA.KBIS.FW.W.0003.000000T0000Z-210322T0100Z/ Oliver-Stark-Morton-Hettinger-Grant- 224 PM CDT Sun Mar 21 2021 /124 PM MDT Sun Mar 21 2021/ ...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF SOUTHWESTERN AND SOUTH CENTRAL NORTH DAKOTA... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 8 PM CDT /7 PM MDT/ this evening. * WINDS...Northwest around 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 18 percent. * AFFECTED AREA...Portions of southwestern and south central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ NDZ001>004-009>012-017>019-021-220100- /O.CON.KBIS.FW.W.0003.000000T0000Z-210322T0100Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-McLean- 224 PM CDT Sun Mar 21 2021 /124 PM MDT Sun Mar 21 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR NORTHWEST AND NORTH CENTRAL NORTH DAKOTA... * WINDS...Northwest around 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 18 percent. * AFFECTED AREA...Northwest and north 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. && $$ ZH
170 WWUS83 KBIS 212145 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 445 PM CDT Sun Mar 21 2021 ...RED FLAG WARNING FOR NORTHWEST...CENTRAL...AND NOW SOUTH CENTRAL NORTH DAKOTA THROUGH THE EARLY EVENING... .Critical fire weather conditions are occurring across northwest, central, and south central North Dakota this afternoon and will continue into the early evening hours. Northwest winds of 20 to 25 mph with gusts 30 to 35 mph will be found this afternoon and evening as a very dry air mass moves across North Dakota. Relative humidity is forecast will dip as low as 15 to 20 percent. NDZ035-044>046-220100- /O.EXA.KBIS.FW.W.0003.000000T0000Z-210322T0100Z/ Burleigh-Adams-Sioux-Emmons- 445 PM CDT Sun Mar 21 2021 /345 PM MDT Sun Mar 21 2021/ ...RED FLAG WARNING IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH CENTRAL NORTH DAKOTA... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect until 8 PM CDT /7 PM MDT/ this evening. * WINDS...Northwest 15 to 25 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 17 percent. * AFFECTED AREA...Red Flag Warning has now been expanded to include south central North Dakota, while remaining across northwestern and central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ NDZ001>004-009>012-017>021-033-034-041-042-220100- /O.CON.KBIS.FW.W.0003.000000T0000Z-210322T0100Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-Oliver-McLean-Stark-Morton-Hettinger-Grant- 445 PM CDT Sun Mar 21 2021 /345 PM MDT Sun Mar 21 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHWESTERN AND CENTRAL NORTH DAKOTA... * WINDS...Northwest 15 to 25 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 19 percent. * AFFECTED AREA...Portions of northwestern and 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. && $$
610 WWUS83 KBIS 220051 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 751 PM CDT Sun Mar 21 2021 NDZ001>004-009>012-017>021-033>035-041-042-044>046-220200- /O.EXP.KBIS.FW.W.0003.000000T0000Z-210322T0100Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-Oliver-McLean-Stark-Morton-Burleigh- Hettinger-Grant-Adams-Sioux-Emmons- 751 PM CDT Sun Mar 21 2021 /651 PM MDT Sun Mar 21 2021/ ...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PORTIONS OF NORTHWESTERN CENTRAL AND SOUTHWESTERN NORTH DAKOTA... Although breezy winds and lower relative humidity may remain through the evening, critical fire danger is no longer expected. Given recent dry conditions, all should still be mindful of any errant sparks that could cause a wildfire, and follow any local or state burn bans. $$
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.