Alert archive / North Dakota / Red Flag Warnings in 2021
Red Flag Warning 27, NWS Bismarck, ND
NWS Bismarck, ND issued this red flag warning at Sep 15, 2021, 2:14 AM MDT for 11 counties in North Dakota. It took effect at Sep 15, 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 15, 2021, 2:14 AM MDT (08:14 UTC)
- In effect from
- Sep 15, 2021, 12:00 PM MDT
- Expired
- Sep 15, 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 08:16 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, 8.2 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
- 4 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 2546 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
524 WWUS83 KBIS 150814 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 314 AM CDT Wed Sep 15 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 westerly, increasing to around 20 to 25 mph, with gusts to 35 mph. Over northwest North Dakota, winds will start shifting northwest by early evening. Relative humidity values will drop to as low as 15 percent. Any fires that ignite will spread rapidly in dry fuels and become difficult to control or suppress. NDZ001-009-017-018-031>033-040-041-043-044-152015- /O.UPG.KBIS.FW.A.0016.210915T1800Z-210916T0100Z/ /O.NEW.KBIS.FW.W.0027.210915T1800Z-210916T0100Z/ Divide-Williams-McKenzie-Dunn-Golden Valley-Billings-Stark-Slope- Hettinger-Bowman-Adams- 314 AM CDT Wed Sep 15 2021 /214 AM MDT Wed Sep 15 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. The Fire Weather Watch is no longer in effect. * WINDS...Westerly 20 to 25 mph with gusts to 35 mph. Winds will start shifting northwest by early evening over northwest North Dakota. * RELATIVE HUMIDITY...As low as 15 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. && $$
1 follow-up statement
094 WWUS83 KBIS 151853 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND Issued by National Weather Service Grand Forks ND 153 PM CDT Wed Sep 15 2021 ...RED FLAG WARNING FOR MUCH OF WESTERN NORTH DAKOTA THIS AFTERNOON AND EARLY EVENING... .Critical fire weather conditions are expected this afternoon and early evening over much of western North Dakota. Winds will become westerly, increasing to around 20 to 25 mph, with gusts to 35 mph. Over northwest North Dakota, winds will start shifting northwest by early evening. Relative humidity values will drop to as low as 15 percent. Any fires that ignite will spread rapidly in dry fuels and become difficult to control or suppress. NDZ001-009-017-018-031>033-040-041-043-044-160100- /O.CON.KBIS.FW.W.0027.000000T0000Z-210916T0100Z/ Divide-Williams-McKenzie-Dunn-Golden Valley-Billings-Stark-Slope- Hettinger-Bowman-Adams- 153 PM CDT Wed Sep 15 2021 /1253 PM MDT Wed Sep 15 2021/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM CDT /7 PM MDT/ THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITY FOR MUCH OF WESTERN NORTH DAKOTA... * WINDS...Westerly 20 to 25 mph with gusts to 35 mph. Winds will start shifting northwest by early evening over northwest North Dakota. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Much of western North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... Burn bans may be in effect. Contact local authorities for details. && $$
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.