Alert archive / North Dakota / Red Flag Warnings in 2021
Red Flag Warning 28, NWS Bismarck, ND
NWS Bismarck, ND issued this red flag warning at Sep 17, 2021, 1:59 AM MDT for 11 counties in North Dakota. It took effect at Sep 17, 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
- Sep 17, 2021, 1:59 AM MDT (07:59 UTC)
- In effect from
- Sep 17, 2021, 12:00 PM MDT
- Expired
- Sep 17, 2021, 7:00 PM MDT
- In force
- 7 hr
- Issued by
- NWS Bismarck, ND
Counties Adams County, ND, Billings County, ND, Bowman County, ND, Divide County, ND, Dunn County, ND, Golden Valley County, ND, Hettinger County, ND, McKenzie County, ND, Slope County, ND, Stark County, ND, Williams County, ND
The radar
The Bismarck radar (KBIS), 186 km from the middle of the area, began a volume at 07:59 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, 8.0 hours before the alert went out and 191 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
- 1870 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
984 WWUS83 KBIS 170759 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 259 AM CDT Fri Sep 17 2021 ...RED FLAG WARNING FOR MUCH OF WESTERN NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected this afternoon and early evening over much of western North Dakota. Winds will become southerly, increasing to around 20 mph with gusts to 30 mph. Relative humidity values will drop to as low as 17 percent. Any fires that ignite will spread rapidly in dry fuels and become difficult to control or suppress. NDZ001-009-017-018-031>033-040-041-043-044-172000- /O.NEW.KBIS.FW.W.0028.210917T1800Z-210918T0100Z/ Divide-Williams-McKenzie-Dunn-Golden Valley-Billings-Stark-Slope- Hettinger-Bowman-Adams- 259 AM CDT Fri Sep 17 2021 /159 AM MDT Fri Sep 17 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 MUCH OF WESTERN 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...South around 20 mph with gusts to 30 mph. * RELATIVE HUMIDITY...As low as 17 percent. * AFFECTED AREA...Much of western 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. && $$
3 follow-up statements
496 WWUS83 KBIS 171402 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 902 AM CDT Fri Sep 17 2021 ...RED FLAG WARNING FOR MUCH OF WESTERN NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected this afternoon and early evening over much of western North Dakota. Winds will become southerly, increasing to around 20 mph with gusts to 30 mph. Relative humidity values will drop to as low as 17 percent. Any fires that ignite will spread rapidly in dry fuels and become difficult to control or suppress. NDZ001-009-017-018-031>033-040-041-043-044-180100- /O.CON.KBIS.FW.W.0028.210917T1800Z-210918T0100Z/ Divide-Williams-McKenzie-Dunn-Golden Valley-Billings-Stark-Slope- Hettinger-Bowman-Adams- 902 AM CDT Fri Sep 17 2021 /802 AM MDT Fri Sep 17 2021/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM CDT /NOON MDT/ THIS AFTERNOON TO 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF WESTERN NORTH DAKOTA... * WINDS...South around 20 mph with gusts up to 30 mph. * RELATIVE HUMIDITY...As low as 17 percent. * AFFECTED AREA...Much of western North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$ Hollan
564 WWUS83 KBIS 171927 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 227 PM CDT Fri Sep 17 2021 ...RED FLAG WARNING FOR MUCH OF WESTERN NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... ...FIRE WEATHER WATCH FOR MUCH OF WESTERN NORTH DAKOTA SATURDAY AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected this afternoon and early evening over much of western North Dakota. Southerly winds will increase to around 20 mph, with gusts to 30 mph. Relative humidity values will drop as low as 15 percent. Any fires that ignite will spread rapidly in dry fuels and become difficult to control or suppress. Critical fire weather conditions will be possible once again for the same areas Saturday afternoon and early evening. South- southwesterly winds could reach sustained speeds around 15 to 20 mph, with gusts as high as 35 mph. More concerning will be extremely low humidity values around 10 percent, with single digit percentages not out of the question. NDZ001-009-017-018-031>033-040-041-043-044-180730- /O.NEW.KBIS.FW.A.0017.210918T1700Z-210919T0100Z/ /O.CON.KBIS.FW.W.0028.000000T0000Z-210918T0100Z/ Divide-Williams-McKenzie-Dunn-Golden Valley-Billings-Stark-Slope- Hettinger-Bowman-Adams- 227 PM CDT Fri Sep 17 2021 /127 PM MDT Fri Sep 17 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF WESTERN NORTH DAKOTA... ...FIRE WEATHER WATCH IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF WESTERN NORTH DAKOTA... The National Weather Service in Bismarck has issued a Fire Weather Watch for wind and low relative humidity, which is in effect from Saturday afternoon through Saturday evening. * WINDS...For today, south winds around 20 mph with gusts up to 30 mph. For Saturday, south-southwest winds 15 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...For today, as low as 15 percent. For Saturday, as low as 9 percent. * AFFECTED AREA...Much of western 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
312 WWUS83 KBIS 180054 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 754 PM CDT Fri Sep 17 2021 ...RED FLAG WARNING FOR MUCH OF WESTERN NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... ...FIRE WEATHER WATCH FOR MUCH OF WESTERN NORTH DAKOTA SATURDAY AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected this afternoon and early evening over much of western North Dakota. Southerly winds will increase to around 20 mph, with gusts to 30 mph. Relative humidity values will drop as low as 15 percent. Any fires that ignite will spread rapidly in dry fuels and become difficult to control or suppress. Critical fire weather conditions will be possible once again for the same areas Saturday afternoon and early evening. South- southwesterly winds could reach sustained speeds around 15 to 20 mph, with gusts as high as 35 mph. More concerning will be extremely low humidity values around 10 percent, with single digit percentages not out of the question. NDZ001-009-017-018-031>033-040-041-043-044-181300- /O.EXP.KBIS.FW.W.0028.000000T0000Z-210918T0100Z/ /O.CON.KBIS.FW.A.0017.210918T1700Z-210919T0100Z/ Divide-Williams-McKenzie-Dunn-Golden Valley-Billings-Stark-Slope- Hettinger-Bowman-Adams- 754 PM CDT Fri Sep 17 2021 /654 PM MDT Fri Sep 17 2021/ ...FIRE WEATHER WATCH REMAINS IN EFFECT FROM SATURDAY AFTERNOON THROUGH SATURDAY EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF WESTERN NORTH DAKOTA... ...RED FLAG WARNING WILL EXPIRE AT 8 PM CDT /7 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR MUCH OF WESTERN NORTH DAKOTA... * WINDS...South 10 to 20 mph with gusts up to 35 mph. * RELATIVE HUMIDITY...As low as 10 percent. * AFFECTED AREA...Much of western North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Fire Weather Watch means that critical fire weather conditions are forecast to occur. Listen for later forecasts and possible Red Flag Warnings. && $$ Telken
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 1:27 PM MDT | Fire Weather Watch | BIS | Adams, Billings, Bowman, Divide, Dunn, Golden Valley and 5 more | 6 hr |
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.