Alert archive / North Dakota / Red Flag Warnings in 2026
Red Flag Warning 7, NWS Bismarck, ND
NWS Bismarck, ND issued this red flag warning at May 10, 2026, 11:51 PM MDT for 36 counties in North Dakota. It took effect at May 11, 2026, 10:00 AM MDT. It was in force for 11 hr. 6 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 10, 2026, 11:51 PM MDT (05:51 UTC)
- In effect from
- May 11, 2026, 10:00 AM MDT
- Expired
- May 11, 2026, 9:00 PM MDT
- In force
- 11 hr
- Issued by
- NWS Bismarck, ND
All 36 counties
Adams County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burke County, ND, Burleigh County, ND, Dickey County, ND, Divide County, ND, Dunn County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McKenzie County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Ward County, ND, Wells County, ND, Williams County, ND
The radar
The Bismarck radar (KBIS), 71 km from the middle of the area, began a volume at 05:55 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 11, 1:40 PM MDT | NON-TSTM WND GST 52 | 10 Nw Williston, ND | AWOS station KXWA Williston Airport. |
| May 11, 2:35 PM MDT | NON-TSTM WND GST 56 | 2 Ese Tioga, ND | AWOS station KD60 Tioga. |
| May 11, 5:06 PM MDT | NON-TSTM WND GST 52 | 5 S Dickinson, ND | ASOS station KDIK Dickinson Airport. |
| May 11, 6:55 PM MDT | NON-TSTM WND GST 53 | 1 Ssw Stanley, ND | AWOS station K08D Stanley. |
| May 11, 6:55 PM MDT | NON-TSTM WND GST 54 | 3 W Palermo, ND | AWOS station K1IN 3 W Palermo. |
| May 11, 7:05 PM MDT | NON-TSTM WND GST 59 | 3 W Palermo, ND | AWOS station K1IN 3 W Palermo. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 5.9 hours before the alert went out and 347 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
- 2505 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
338 WWUS83 KBIS 110551 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 1251 AM CDT Mon May 11 2026 ...RED FLAG WARNING TODAY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... .Critical fire weather conditions are expected today across western and most of central North Dakota, including the James River Valley. Southerly winds of 25 to 35 mph with gusts up to 45 mph will shift to the northwest in the afternoon and evening, initially in western and then central North Dakota. Relative humidity values will drop to as low as 15 percent. There is a low chance for isolated showers and thunderstorms in the afternoon and early evening over parts of western and central North Dakota, which could cause stronger erratic wind gusts. Any fires that ignite could spread rapidly and become difficult to control. Critical fire weather conditions are likely again Tuesday, especially across central North Dakota. NDZ001>004-009>012-017>022-031>036-040>048-050-051-111800- /O.UPG.KBIS.FW.A.0004.260511T1600Z-260512T0300Z/ /O.NEW.KBIS.FW.W.0007.260511T1600Z-260512T0300Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Golden Valley- Billings-Stark-Morton-Burleigh-Kidder-Slope-Hettinger-Grant- Bowman-Adams-Sioux-Emmons-Logan-La Moure-McIntosh-Dickey- 1251 AM CDT Mon May 11 2026 /1151 PM MDT Sun May 10 2026/ ...RED FLAG WARNING IN EFFECT FROM 11 AM CDT /10 AM MDT/ THIS MORNING TO 10 PM CDT /9 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN AND MOST OF 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 11 AM CDT /10 AM MDT/ this morning to 10 PM CDT /9 PM MDT/ this evening. The Fire Weather Watch is no longer in effect. * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Western and most of central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NDZ013-023-025-037-111800- /O.NEW.KBIS.FW.W.0007.260511T1600Z-260512T0300Z/ Pierce-Wells-Foster-Stutsman- 1251 AM CDT Mon May 11 2026 ...RED FLAG WARNING IN EFFECT FROM 11 AM THIS MORNING TO 10 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR PIERCE, WELLS, FOSTER, AND STUTSMAN COUNTIES... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM this morning to 10 PM CDT this evening. * WINDS...South 25 to 35 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 25 percent. * AFFECTED AREA...Pierce, Wells, Foster, and Stutsman counties. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ Telken
6 follow-up statements
905 WWUS83 KBIS 111051 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 551 AM CDT Mon May 11 2026 ...RED FLAG WARNING TODAY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... .Critical fire weather conditions are expected today across western and most of central North Dakota, including the James River Valley. Southerly winds of 25 to 35 mph with gusts up to 45 mph will shift to the northwest in the afternoon and evening, initially in western and then central North Dakota. Relative humidity values will drop to as low as 15 percent. There is a low chance for isolated showers and thunderstorms in the afternoon and early evening over parts of western and central North Dakota, which could cause stronger erratic wind gusts. Any fires that ignite will spread rapidly and become difficult to control. Critical fire weather conditions are likely again Tuesday, especially across central North Dakota. NDZ001>004-009>013-017>023-025-031>037-040>048-050-051-120300- /O.CON.KBIS.FW.W.0007.260511T1600Z-260512T0300Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells-Foster- Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-Stutsman- Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-La Moure- McIntosh-Dickey- 551 AM CDT Mon May 11 2026 /451 AM MDT Mon May 11 2026/ ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM CDT /10 AM MDT/ THIS MORNING TO 10 PM CDT /9 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Western and most of central North Dakota, including the James River Valley. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ Telken
776 WWUS83 KBIS 111442 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 942 AM CDT Mon May 11 2026 ...RED FLAG WARNING TODAY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... .Critical fire weather conditions are expected today across western and most of central North Dakota, including the James River Valley. Southerly winds of 25 to 35 mph with gusts up to 45 mph will shift to the northwest in the afternoon and evening, initially in western and then central North Dakota. Relative humidity values will drop to as low as 15 percent. There is a low chance for isolated showers and thunderstorms in the afternoon and early evening over parts of western and central North Dakota, which could cause stronger erratic wind gusts. Any fires that ignite will spread rapidly and become difficult to control. Critical fire weather conditions are likely again Tuesday, especially across central North Dakota. NDZ001>004-009>013-017>023-025-031>037-040>048-050-051-120300- /O.CON.KBIS.FW.W.0007.260511T1600Z-260512T0300Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells-Foster- Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-Stutsman- Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-La Moure- McIntosh-Dickey- 942 AM CDT Mon May 11 2026 /842 AM MDT Mon May 11 2026/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT /9 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph in the late morning and early afternoon, turning northwesterly through the afternoon and evening as a cold front moves across the region. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Western and most of central North Dakota, including the James River Valley. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ ADAM
929 WWUS83 KBIS 111559 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 1059 AM CDT Mon May 11 2026 ...RED FLAG WARNING TODAY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... .Critical fire weather conditions are expected today across western and central North Dakota, including the James River Valley. Southerly winds of 25 to 35 mph with gusts up to 45 mph will shift to the northwest in the afternoon and evening, initially in western and then central North Dakota. Relative humidity values will drop to as low as 15 percent. There is a low chance for isolated showers and thunderstorms in the afternoon and early evening over parts of western and central North Dakota, which could cause stronger erratic wind gusts. Any fires that ignite will spread rapidly and become difficult to control. Critical fire weather conditions are likely again Tuesday, especially across central North Dakota. NDZ005-120300- /O.EXA.KBIS.FW.W.0007.260511T1600Z-260512T0300Z/ Rolette- 1059 AM CDT Mon May 11 2026 ...RED FLAG WARNING IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR ROLETTE COUNTY... 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 CDT this evening. * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph in the late morning and early afternoon, turning northwesterly through the afternoon and evening as a cold front moves across the region. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...North central North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NDZ001>004-009>013-017>023-025-031>037-040>048-050-051-120300- /O.CON.KBIS.FW.W.0007.260511T1600Z-260512T0300Z/ Divide-Burke-Renville-Bottineau-Williams-Mountrail-Ward-McHenry- Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells-Foster- Golden Valley-Billings-Stark-Morton-Burleigh-Kidder-Stutsman- Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan-La Moure- McIntosh-Dickey- 1059 AM CDT Mon May 11 2026 /959 AM MDT Mon May 11 2026/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT /9 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN AND MOST OF CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph in the late morning and early afternoon, turning northwesterly through the afternoon and evening as a cold front moves across the region. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Western and most of central North Dakota, including the James River Valley. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
261 WWUS83 KBIS 111632 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 1132 AM CDT Mon May 11 2026 ...RED FLAG WARNING TODAY FOR WESTERN AND CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... .Critical fire weather conditions are expected today across western and central North Dakota, including the James River Valley. Southerly winds of 25 to 35 mph with gusts up to 45 mph will shift to the northwest in the afternoon and evening, initially in western and then central North Dakota. Relative humidity values will drop to as low as 15 percent. There is a low chance for isolated showers and thunderstorms in the afternoon and early evening over parts of western and central North Dakota, which could cause stronger erratic wind gusts. Any fires that ignite will spread rapidly and become difficult to control. Critical fire weather conditions are likely again Tuesday, especially across central North Dakota. NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-120300- /O.CON.KBIS.FW.W.0007.000000T0000Z-260512T0300Z/ Divide-Burke-Renville-Bottineau-Rolette-Williams-Mountrail-Ward- McHenry-Pierce-McKenzie-Dunn-Mercer-Oliver-McLean-Sheridan-Wells- Foster-Golden Valley-Billings-Stark-Morton-Burleigh-Kidder- Stutsman-Slope-Hettinger-Grant-Bowman-Adams-Sioux-Emmons-Logan- La Moure-McIntosh-Dickey- 1132 AM CDT Mon May 11 2026 /1032 AM MDT Mon May 11 2026/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT /9 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN AND CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY... * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph in the late morning and early afternoon, turning northwesterly through the afternoon and evening as a cold front moves across the region. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Western and central North Dakota, including the James River Valley. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
591 WWUS83 KBIS 111901 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 201 PM CDT Mon May 11 2026 ...RED FLAG WARNING TODAY FOR WESTERN AND CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY, AND AGAIN ON TUESDAY FOR CENTRAL NORTH DAKOTA INCLUDING THE JAMES RIVER VALLEY... .Critical fire weather conditions will continue today through this evening across western and central North Dakota, including the James River Valley. Southerly winds of 25 to 35 mph with gusts up to 45 mph will shift to the northwest in the afternoon and evening, initially in western and then central North Dakota. Relative humidity values will drop to as low as 15 percent. There is a low chance for isolated showers and thunderstorms in the afternoon and early evening over parts of western and central North Dakota, which could cause stronger erratic wind gusts. Any fires that ignite will spread rapidly and become difficult to control. Critical fire weather conditions are expected again on Tuesday over central North Dakota including the James River Valley. Northwest winds will increase to 20 to 35 mph with gusts to 45 mph, while relative humidity values drop as low as 20 percent. Again, any fires that ignite will spread rapidly and become difficult to control. NDZ003>005-011>013-021>023-025-035>037-046>048-050-051-120600- /O.NEW.KBIS.FW.W.0008.260512T1600Z-260513T0200Z/ /O.CON.KBIS.FW.W.0007.000000T0000Z-260512T0300Z/ Renville-Bottineau-Rolette-Ward-McHenry-Pierce-McLean-Sheridan- Wells-Foster-Burleigh-Kidder-Stutsman-Emmons-Logan-La Moure- McIntosh-Dickey- 201 PM CDT Mon May 11 2026 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY OVER CENTRAL NORTH DAKOTA, INCLUDING THE JAMES RIVER VALLEY, WITH A RED FLAG WARNING AGAIN IN EFFECT AGAIN TUESDAY AND TUESDAY EVENING.... The National Weather Service in Bismarck has issued a Red Flag Warning for wind and low relative humidity, which is in effect from 11 AM to 9 PM CDT Tuesday. The Red Flag Warning for today through this evening also remains in effect until 10 PM CDT this evening. * WINDS...For today, southwest 25 to 35 mph with gusts to 45 mph in the early afternoon, turning northwesterly through the afternoon and evening as a cold front moves across the region. On Tuesday winds will be northwest 20 to 35 mph with gusts to 45 mph. * RELATIVE HUMIDITY...As low as 15 percent today, and as low as 20 percent on Tuesday. * AFFECTED AREA...Central North Dakota, including the James River Valley. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NDZ001-002-009-010-017>020-031>034-040>045-120300- /O.CON.KBIS.FW.W.0007.000000T0000Z-260512T0300Z/ Divide-Burke-Williams-Mountrail-McKenzie-Dunn-Mercer-Oliver- Golden Valley-Billings-Stark-Morton-Slope-Hettinger-Grant-Bowman- Adams-Sioux- 201 PM CDT Mon May 11 2026 /101 PM MDT Mon May 11 2026/ ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM CDT /9 PM MDT/ THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN NORTH DAKOTA... * WINDS...Southwest 25 to 35 mph with gusts up to 45 mph, turning northwesterly through the afternoon and evening as a cold front moves across the region. * RELATIVE HUMIDITY...As low as 15 percent. * AFFECTED AREA...Western North Dakota. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$
084 WWUS83 KBIS 120309 RFWBIS URGENT - FIRE WEATHER MESSAGE National Weather Service Bismarck ND 1009 PM CDT Mon May 11 2026 ...RED FLAG WARNING ON TUESDAY FOR MUCH OF CENTRAL NORTH DAKOTA INCLUDING THE JAMES RIVER VALLEY... .The Red Flag Warning for this evening has been allowed to expire as humidity values begin increasing with sunset. However, a Red Flag Warning remains in effect on Tuesday for much of central North Dakota and the James River Valley. Critical fire weather conditions are expected Tuesday in central North Dakota and the James River Valley due to northwest winds of 20 to 35 mph with gusts to 45 mph, and relative humidity values as low as 20 percent. Any fires that ignite will spread rapidly and become difficult to control. NDZ003>005-011>013-021>023-025-035>037-046>048-050-051-121515- /O.EXP.KBIS.FW.W.0007.000000T0000Z-260512T0300Z/ /O.CON.KBIS.FW.W.0008.260512T1600Z-260513T0200Z/ Renville-Bottineau-Rolette-Ward-McHenry-Pierce-McLean-Sheridan- Wells-Foster-Burleigh-Kidder-Stutsman-Emmons-Logan-La Moure- McIntosh-Dickey- 1009 PM CDT Mon May 11 2026 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM TO 9 PM CDT TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR CENTRAL NORTH DAKOTA AND THE JAMES RIVER VALLEY... * WINDS...On Tuesday winds will be northwest 20 to 35 mph with gusts to 45 mph. * RELATIVE HUMIDITY...As low as 20 percent on Tuesday. * AFFECTED AREA...Central North Dakota, including the James River Valley. * IMPACTS...Any fires that ignite will spread rapidly and become difficult to control or suppress. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are expected. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. && $$ NDZ001-002-009-010-017>020-031>034-040>045-120415- /O.EXP.KBIS.FW.W.0007.000000T0000Z-260512T0300Z/ Divide-Burke-Williams-Mountrail-McKenzie-Dunn-Mercer-Oliver- Golden Valley-Billings-Stark-Morton-Slope-Hettinger-Grant-Bowman- Adams-Sioux- 1009 PM CDT Mon May 11 2026 /909 PM MDT Mon May 11 2026/ ...RED FLAG WARNING HAS EXPIRED FOR WIND AND LOW RELATIVE HUMIDITY FOR WESTERN AND CENTRAL NORTH DAKOTA... Humidity values will gradually increase overnight, and winds will decrease in most areas. $$ CJS
What forecasters said that day
The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Bismarck, ND wrote its last area forecast discussion before this red flag warning went out at May 10, 8:36 PM MDT, 3 hours 15 minutes earlier. Its key messages:
- Areas of frost late tonight and early Monday morning over much of the James River Valley region.
- Critical fire weather conditions likely on Monday across western through most of central ND.
- Windy conditions and low humidity values through the rest of the upcoming week may lead to daily critical fire weather conditions.
Area forecast discussion, May 10, 8:36 PM MDT, 3 hours 15 minutes before
Area Forecast Discussion National Weather Service Bismarck ND 936 PM CDT Sun May 10 2026 .KEY MESSAGES... - Areas of frost late tonight and early Monday morning over much of the James River Valley region. - Critical fire weather conditions likely on Monday across western through most of central ND. - Windy conditions and low humidity values through the rest of the upcoming week may lead to daily critical fire weather conditions. && .UPDATE... Issued at 930 PM CDT Sun May 10 2026 Quiet weather persists at the time of this mid evening update. High based clouds have expanded across much of western and central North Dakota at this time. Have blended in latest satellite and model trends in the sky grids through the early overnight period. Otherwise, the forecast remains on track. UPDATE Issued at 615 PM CDT Sun May 10 2026 Quiet weather is found across western and central North Dakota at the time of this early evening update. Have blended in the latest satellite data into the cloud grids to capture the higher coverage of cumulus in the southwest, and the slightly faster evolution of the upper level clouds moving in out of Montana than previously forecast. Overall, the forecast remains in good shape. && .DISCUSSION... Issued at 244 PM CDT Sun May 10 2026 Current surface analysis places high pressure over southern Manitoba and northwest Minnesota into North Dakota, with trough noted to the lee of the Canadian and Northern Rockies. Upper level analysis places trough off the west coast with ridge over the Great Basin into the Northern Rockies. Over our area, quiet weather continues with light winds. The story for the week will be mostly dry and frequently windy conditions. The biggest overall weather impacts will be in regard to fire weather. Those are discussed in the fire weather section below. For tonight, a short-wave upper level trough will push up the back side of the aforementioned ridge overnight. In response, aforementioned surface trough closes off over over southeast Alberta and moves easterly over south central Saskatchewan. Light winds over our area will become southerly and breezy through the night from west to east as this low moves east. Over our far eastern area, winds will be slow to increase giving time for temperatures to drop into the lower to mid 30s. Therefore a Frost Advisory has been issued for Foster, Stutsman, LaMoure, and Dickey Counties. On Monday, surface low will push through the far southern prairie provinces as the aforementioned short wave busts through the ridge into the northern plains. Southerly winds will be on the increase, becoming quite gusty especially over central North Dakota. As we get towards mid day, a cold front will enter the west, with winds switching towards the northwest and increasing. The front will move east through the afternoon, entering central North Dakota by late afternoon/early evening. Dry air will be over our area, especially behind the front, but ahead of the front over parts of central North Dakota, dewpoints will be a bit higher. Guidance continues to suggest a mainly north to south orientated ribbon of instability developing and sliding east. Although this may only be CAPE values of ~200-500 J/kg, quite high forecast deep layer shear (50-60 kts effective bulk) is noted, thus the potential for strong winds. With high- res models starting to pick up on this combined with the approaching upper wave/cold front, will continue to paint in low shower/storm chances over much of northwest/central North Dakota in the afternoon and evening. Gusty winds continue overnight, especially over central North Dakota. Gusty winds continue behind the front on Tuesday. Although the airmass moving in is quite mild in temperature, good mixing of stronger winds aloft will keep conditions quite windy, especially over central North Dakota. Surface high passes over Tuesday night with southerly winds developing for Wednesday as the next lee trough deepens and closes off to the east of the Rockies, again coinciding with dry conditions enhancing the fire threat. As we get later in the week uncertainty remains as clusters continue to show a split in solutions. With that said, the general pattern looks to be somewhat unsettled thus the forecast will keep low precipitation chances in each day. && .AVIATION /00Z TAFS THROUGH 00Z MONDAY/... Issued at 930 PM CDT Sun May 10 2026 VFR ceilings and visibility is expected at all terminals throughout the 00Z TAF period. Isolated showers or thunderstorms are possible over portions of north central North Dakota into the James River Valley Monday afternoon, though confidence in this impacting any given TAF site is low. Variable winds will organize out of the south this evening and will continue to strengthen overnight, becoming strong Monday morning and afternoon. Winds will generally turn to the west northwest through the late afternoon and the end of the TAF period as a cold front moves across the forecast area. && .FIRE WEATHER... Issued at 439 AM CDT Sun May 10 2026 A Fire Weather Watch remains in effect for most of western through central North Dakota Monday. Breezy southerly winds will begin to develop tonight as low pressure encroaches from southwestern Canada. Winds will then increase through Monday morning and early afternoon for the eastern half of the state as the low passes through. Associated trailing cold frontal boundary will then shift winds to a northwesterly direction over western parts of the state in the afternoon, followed by eastern parts of the state in the evening. This frontal boundary will produce further windy conditions over western, and especially northwestern, North Dakota. In regard to dewpoints, aforementioned southerly winds will bring brief higher dewpoints, and therefore, somewhat higher relative humidity values. There is still some question as to the timing and exact location of the transition between the higher and lower values. Still, strong winds of 25 to 35 mph with gusts up to 45 mph, combined with dry conditions, will likely produce critical fire weather conditions for most of western through central ND Monday.What could further complicate matters is that there is a low chance of showers and a few thunderstorms over northwest and central North Dakota Monday afternoon and evening. Further enhanced and erratic winds are possible with any showers or thunderstorms that develop. Winds will diminish Monday night over most areas west of Highway 83, though remain breezy along and east. Very windy conditions out of the northwest with gusts up to 50 mph are then expected Tuesday afternoon for the eastern half of the state. Weaker winds to as low as 15 to 20 mph near the ND/MT border are forecast further west. Similar to Monday, minimum relative humidity will drop in western North Dakota, though remain a bit higher in the east. Combined, these dry and windy conditions will likely result in further critical fire weather conditions for much of the state. Winds will rapidly diminish Tuesday evening with the combination of encroaching high pressure and a loss of diurnal heating. Wednesday through the end of the week will see continued mostly dry conditions. Minimum relative humidity across western through central ND will remain low with the lowest values consistently west of Highway 83. Periodically windy conditions are also expected, though confidence in just how strong the winds become decreases towards the tail end of the week with significant differences in the cluster analysis Thursday. Low chances for a few showers and thunderstorms also enter the picture at the end of the week. With all this, additional days of critical fire weather conditions for at least parts of the area are possible to finish out the latter half of the week. && .BIS WATCHES/WARNINGS/ADVISORIES... Fire Weather Watch from Monday morning through Monday evening for NDZ001>004-009>012-017>022-031>036-040>048-050-051. Frost Advisory from 1 AM to 9 AM CDT Monday for NDZ025-037-048- 051. && UPDATE...Adam DISCUSSION...JJS AVIATION...Adam FIRE WEATHER...JJS
Hazardous weather outlook, May 10, 8:37 PM MDT, 3 hours 14 minutes before
Hazardous Weather Outlook National Weather Service Bismarck ND 937 PM CDT Sun May 10 2026 NDZ001>004-009-010-012-017>020-022-031>033-035-036-040>044-046- 047-050-055>062-120245- Divide-Burke-Renville-Bottineau-Williams-Mountrail-McHenry- McKenzie-Dunn-Mercer-Oliver-Sheridan-Golden Valley-Billings-Stark- Burleigh-Kidder-Slope-Hettinger-Grant-Bowman-Adams-Emmons-Logan- McIntosh-Northwest Ward-Central and Southern Ward/Minot Area- Western McLean-Eastern McLean-Western Morton-Eastern Morton- Western Sioux-Eastern Sioux- 937 PM CDT Sun May 10 2026 /837 PM MDT Sun May 10 2026/ This Hazardous Weather Outlook is for portions of north central North Dakota, northwest North Dakota, south central North Dakota, southeast North Dakota, and southwest North Dakota. .DAY ONE...Tonight The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday through Saturday A Fire Weather Watch is in effect Monday into Monday evening. See weather.gov/bis for details. Several days of critical fire weather conditions are possible this week. .SPOTTER INFORMATION STATEMENT... Spotters are asked to provide reports to the NWS using standard procedures, including through our social media accounts. NDZ005-013-023-120245- Rolette-Pierce-Wells- 937 PM CDT Sun May 10 2026 This Hazardous Weather Outlook is for portions of north central North Dakota and south central North Dakota. .DAY ONE...Tonight The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Monday through Saturday Several days of near critical to critical fire weather conditions are possible this week. .SPOTTER INFORMATION STATEMENT... Spotters are asked to provide reports to the NWS using standard procedures, including through our social media accounts. NDZ025-037-120245- Foster-Stutsman- 937 PM CDT Sun May 10 2026 This Hazardous Weather Outlook is for portions of southeast North Dakota. .DAY ONE...Tonight A Frost Advisory is in effect late tonight. See weather.gov/bis for details. .DAYS TWO THROUGH SEVEN...Monday through Saturday A Frost Advisory is in effect early Monday morning. See weather.gov/bis for details. Several days of near critical to critical fire weather conditions are possible this week. .SPOTTER INFORMATION STATEMENT... Spotters are asked to provide reports to the NWS using standard procedures, including through our social media accounts. NDZ048-051-120245- La Moure-Dickey- 937 PM CDT Sun May 10 2026 This Hazardous Weather Outlook is for portions of southeast North Dakota. .DAY ONE...Tonight A Frost Advisory is in effect late tonight. See weather.gov/bis for details. .DAYS TWO THROUGH SEVEN...Monday through Saturday A Frost Advisory is in effect early Monday morning. A Fire Weather Watch is in effect Monday into Monday evening. See weather.gov/bis for details. Several days of critical fire weather conditions are possible this week. .SPOTTER INFORMATION STATEMENT... Spotters are asked to provide reports to the NWS using standard procedures, including through our social media accounts.
The office that day
Everything else NWS Bismarck, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 11, 11:34 AM MDT | Wind Advisory | BIS | Burleigh, Dickey, Emmons, Foster, Kidder, LaMoure and 8 more | 30 hr |
| May 11, 1:01 PM MDT | Red Flag Warning | BIS | Bottineau, Burleigh, Dickey, Emmons, Foster, Kidder and 12 more | 31 hr |
| May 11, 5:02 PM MDT | Special Weather Statement | BIS | Pierce | 28 min |
Nearby
Red Flag Warnings in North Dakota, 2026Every red flag warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.