Alert archive / Montana / Red Flag Warnings in 2021

Red Flag Warning 5, NWS Billings, MT

June 14, 202114 counties in Montana; Sheridan County, Wyoming

NWS Billings, MT issued this red flag warning at Jun 14, 2021, 9:26 AM MDT for 14 counties in Montana; Sheridan County, Wyoming. It took effect at Jun 15, 2021, 10:00 AM MDT. It was in force for 19 hr. 5 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: Jun 14, 2021, 9:26 AM MDT (15:26 UTC)
In effect from: Jun 15, 2021, 10:00 AM MDT
Expired: Jun 16, 2021, 4:30 AM MDT
In force: 19 hr
Issued by: NWS Billings, MT

Counties Big Horn County, MT, Carbon County, MT, Gallatin County, MT, Golden Valley County, MT, Madison County, MT, Musselshell County, MT, Park County, MT, Powder River County, MT, Rosebud County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Wheatland County, MT, Yellowstone County, MT, Sheridan County, WY

The radar

The Billings radar (KBLX), 17 km from the middle of the area, began a volume at 15:26 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
Jun 15, 1:00 PM MDT	NON-TSTM WND GST 49	6 Wsw Big Sky, MT	MESONET STATION YCTIM 6.3 W BIG SKY (AVALANCHE).
Jun 15, 1:57 PM MDT	NON-TSTM WND GST 52	4 Nne Mcallister, MT	MESONET STATION MTNOR NORRIS HILL (MT DOT).
Jun 15, 2:35 PM MDT	NON-TSTM WND GST 49	5 Nne Cameron, MT	AWOS STATION KEKS ENNIS BIG SKY AWOS.
Jun 15, 4:15 PM MDT	NON-TSTM WND GST 51	1 Wnw West Yellowstone, MT	AWOS STATION KWYS W YELLOWSTONE AWOS.
Jun 15, 6:04 PM MDT	NON-TSTM WND GST 57	7 Ssw Big Sky, MT	MESONET STATION YLWM8 YELLOW MULE RAWS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 3.4 hours before the alert went out and 235 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 13 J/kg
Mixed-layer CIN: -695 J/kg
Mixed-layer LCL: 2646 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

642 
WWUS85 KBYZ 141526
RFWBYZ

URGENT - FIRE WEATHER MESSAGE
National Weather Service Billings MT
926 AM MDT Mon Jun 14 2021

MTZ123-124-151530-
/O.NEW.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Gallatin National Forest-Wheatland County/Sweet Grass County-
926 AM MDT Mon Jun 14 2021

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 10 PM MDT TUESDAY...

The National Weather Service in Billings has issued a Red Flag
Warning...which is in effect from 10 AM to 10 PM MDT Tuesday.

* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
  will create erratic fire behavior. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...123...124.

* COUNTIES AFFECTED: 
   In Central MT...Wheatland.
   In South Central MT...Park...Sweet Grass.
   In Southwest MT...Gallatin.

* WIND: Southwest 20 to 30 mph with gusts up to 45 mph.

* HUMIDITY: As low as 9 percent.

* TEMPERATURES: In the 90s to near 100 degrees.

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.

&&

$$

MTZ125>131-151530-
/O.NEW.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Stillwater County-Beartooth Ranger District Custer National Forest-
Golden Valley County/Musselshell county-Yellowstone County-
Crow Indian Reservation/Bighorn Canyon Rec Area-
Northern Rosebud/Northern Treasure Counties-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-
926 AM MDT Mon Jun 14 2021

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 10 PM MDT TUESDAY...

The National Weather Service in Billings has issued a Red Flag
Warning...which is in effect from 10 AM to 10 PM MDT Tuesday.

* IMPACTS: Low humidities, hot temperatures, and gusty winds will
  create erratic fire behavior. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...125...126...127...128...129.
   In Southeast MT Fire Zones...130...131.

* COUNTIES AFFECTED: 
   In Central MT...Golden Valley...Musselshell.
   In South Central MT...Big Horn...Carbon...Park...Stillwater
                         Sweet Grass...Yellowstone.
   In Southeast MT...Powder River...Rosebud...Treasure.

* WIND: Southwest 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 7 percent.

* TEMPERATURES: In the upper 90s to lower 100s.

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.

&&

$$


http://weather.gov/Billings

5 follow-up statements

296 
WWUS85 KBYZ 142103
RFWBYZ

URGENT - FIRE WEATHER MESSAGE
National Weather Service Billings MT
303 PM MDT Mon Jun 14 2021

MTZ123-124-152115-
/O.CON.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Gallatin National Forest-Wheatland County/Sweet Grass County-
303 PM MDT Mon Jun 14 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM MDT
TUESDAY...

* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
  will create erratic fire behavior. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...123...124.

* COUNTIES AFFECTED: 
   In Central MT...Wheatland.
   In South Central MT...Park...Sweet Grass.
   In Southwest MT...Gallatin.

* WIND: Southwest 20 to 30 mph with gusts up to 45 mph.

* HUMIDITY: As low as 9 percent.

* TEMPERATURES: In the 90s to near 100 degrees.

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.

&&

$$

MTZ125>131-152115-
/O.CON.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Stillwater County-Beartooth Ranger District Custer National Forest-
Golden Valley County/Musselshell county-Yellowstone County-
Crow Indian Reservation/Bighorn Canyon Rec Area-
Northern Rosebud/Northern Treasure Counties-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-
303 PM MDT Mon Jun 14 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM MDT
TUESDAY...

* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
  will create erratic fire behavior. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...125...126...127...128...129.
   In Southeast MT Fire Zones...130...131.

* COUNTIES AFFECTED: 
   In Central MT...Golden Valley...Musselshell.
   In South Central MT...Big Horn...Carbon...Park...Stillwater
                         Sweet Grass...Yellowstone.
   In Southeast MT...Powder River...Rosebud...Treasure.

* WIND: Southwest 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 7 percent.

* TEMPERATURES: 96 to 109 degrees.

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.

&&

$$


http://weather.gov/Billings

006 
WWUS85 KBYZ 151005
RFWBYZ

URGENT - FIRE WEATHER MESSAGE
National Weather Service Billings MT
405 AM MDT Tue Jun 15 2021

WYZ274-160400-
/O.EXA.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Sheridan County-
405 AM MDT Tue Jun 15 2021

...RED FLAG WARNING IN EFFECT FROM 10 AM THIS MORNING TO 10 PM MDT
THIS EVENING...

The National Weather Service in Billings has issued a Red Flag
Warning...which is in effect from 10 AM this morning to 10 PM MDT
this evening.

* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
  will create erratic fire behavior.

* AFFECTED AREA: 
   In North Central WY Fire Zone...274.

* COUNTIES AFFECTED: 
   In North Central WY...Sheridan.

* WIND: Southwest 10 to 20 mph with gusts up to 30 mph.

* HUMIDITY: As low as 5 percent.

* TEMPERATURES: Around 105 degrees.

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.

&&

$$

MTZ123-124-160400-
/O.CON.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Gallatin National Forest-Wheatland County/Sweet Grass County-
405 AM MDT Tue Jun 15 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 PM MDT THIS EVENING...

* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
  will create erratic fire behavior. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...123...124.

* COUNTIES AFFECTED: 
   In Central MT...Wheatland.
   In South Central MT...Park...Sweet Grass.
   In Southwest MT...Gallatin.

* WIND: Southwest 20 to 30 mph with gusts up to 45 mph.

* HUMIDITY: As low as 7 percent.

* TEMPERATURES: In the 90s to around 100 degrees.

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.

&&

$$

MTZ125>131-160400-
/O.CON.KBYZ.FW.W.0005.210615T1600Z-210616T0400Z/
Stillwater County-Beartooth Ranger District Custer National Forest-
Golden Valley County/Musselshell county-Yellowstone County-
Crow Indian Reservation/Bighorn Canyon Rec Area-
Northern Rosebud/Northern Treasure Counties-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-
405 AM MDT Tue Jun 15 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 PM MDT THIS EVENING...

* IMPACTS: Low humidities, hot temperatures, and strong gusty winds
  will create erratic fire behavior. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...125...126...127...128...129.
   In Southeast MT Fire Zones...130...131.

* COUNTIES AFFECTED: 
   In Central MT...Golden Valley...Musselshell.
   In South Central MT...Big Horn...Carbon...Park...Stillwater
                         Sweet Grass...Yellowstone.
   In Southeast MT...Powder River...Rosebud...Treasure.

* WIND: Southwest 15 to 25 mph with gusts up to 35 mph.

* HUMIDITY: As low as 5 percent.

* TEMPERATURES: 104 to 109 degrees.

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.

&&

$$


http://weather.gov/Billings

785 
WWUS85 KBYZ 152059
RFWBYZ

URGENT - FIRE WEATHER MESSAGE
National Weather Service Billings MT
259 PM MDT Tue Jun 15 2021

MTZ123-124-160400-
/O.CON.KBYZ.FW.W.0005.000000T0000Z-210616T0400Z/
Gallatin National Forest-Wheatland County/Sweet Grass County-
259 PM MDT Tue Jun 15 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING...

* IMPACTS: Low humidities, hot temperatures, and strong gusty 
  winds will create erratic fire behavior and new fire starts. 

* AFFECTED AREA: 
   In South Central MT Fire Zones...123...124.

* COUNTIES AFFECTED: 
   In Central MT...Wheatland.
   In South Central MT...Park...Sweet Grass.
   In Southwest MT...Gallatin.

* WIND: Southwest 20 to 30 mph with gusts up to 50 mph.

* HUMIDITY: As low as 7 percent.

* TEMPERATURES: In the 90s to around 100 degrees.

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.

&&

$$

MTZ125>131-WYZ274-160400-
/O.CON.KBYZ.FW.W.0005.000000T0000Z-210616T0400Z/
Stillwater County-Beartooth Ranger District Custer National Forest-
Golden Valley County/Musselshell county-Yellowstone County-
Crow Indian Reservation/Bighorn Canyon Rec Area-
Northern Rosebud/Northern Treasure Counties-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-Sheridan County-
259 PM MDT Tue Jun 15 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING...

* IMPACTS: Low humidities, hot temperatures, and strong gusty 
  winds will create erratic fire behavior and new fire starts. 

* AFFECTED AREA: 
   In North Central WY Fire Zone...274.
   In South Central MT Fire Zones...125...126...127...128...129.
   In Southeast MT Fire Zones...130...131.

* COUNTIES AFFECTED: 
   In Central MT...Golden Valley...Musselshell.
   In North Central WY...Sheridan.
   In South Central MT...Big Horn...Carbon...Park...Stillwater
                         Sweet Grass...Yellowstone.
   In Southeast MT...Powder River...Rosebud...Treasure.

* WIND: Southwest 15 to 25 mph with gusts up to 40 mph.

* HUMIDITY: As low as 5 percent.

* TEMPERATURES: 104 to 109 degrees.

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.

&&

$$


http://weather.gov/Billings

842 
WWUS85 KBYZ 160401
RFWBYZ

URGENT - FIRE WEATHER MESSAGE
National Weather Service Billings MT
1001 PM MDT Tue Jun 15 2021

MTZ123-124-161200-
/O.EXT.KBYZ.FW.W.0005.000000T0000Z-210616T1200Z/
Gallatin National Forest-Wheatland County/Sweet Grass County-
1001 PM MDT Tue Jun 15 2021

...RED FLAG WARNING NOW IN EFFECT UNTIL 6 AM MDT WEDNESDAY...

* IMPACTS: Low humidities, gusty winds, and wind shift with a cold
  front will create erratic fire behavior.
 
* AFFECTED AREA: 
   In South Central MT Fire Zones...123...124.

* COUNTIES AFFECTED: 
   In Central MT...Wheatland.
   In South Central MT...Park...Sweet Grass.
   In Southwest MT...Gallatin.

* WIND: West 10 to 20 mph with gusts up to 30 mph. Beocming
  northwest to north overnight. 

* HUMIDITY: under 15 percent for many locations, jumping up behind
  frontal passage. 

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.

&&

$$

MTZ125>131-WYZ274-161200-
/O.EXT.KBYZ.FW.W.0005.000000T0000Z-210616T1200Z/
Stillwater County-Beartooth Ranger District Custer National Forest-
Golden Valley County/Musselshell county-Yellowstone County-
Crow Indian Reservation/Bighorn Canyon Rec Area-
Northern Rosebud/Northern Treasure Counties-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-Sheridan County-
1001 PM MDT Tue Jun 15 2021

...RED FLAG WARNING NOW IN EFFECT UNTIL 6 AM MDT WEDNESDAY...

* IMPACTS: Low humidities, strong gusty winds, and wind shift 
  with a cold front will create erratic fire behavior and new 
  fire starts. 

* AFFECTED AREA: 
   In North Central WY Fire Zone...274.
   In South Central MT Fire Zones...125...126...127...128...129.
   In Southeast MT Fire Zones...130...131.

* COUNTIES AFFECTED: 
   In Central MT...Golden Valley...Musselshell.
   In North Central WY...Sheridan.
   In South Central MT...Big Horn...Carbon...Park...Stillwater
                         Sweet Grass...Yellowstone.
   In Southeast MT...Powder River...Rosebud...Treasure.

* WIND: West 10 to 20 mph with gusts up to 30 mph.

* HUMIDITY: As low as 15 percent.

* TEMPERATURES: In the lower 70s.

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.

&&

$$


http://weather.gov/Billings

698 
WWUS85 KBYZ 161030
RFWBYZ

URGENT - FIRE WEATHER MESSAGE
National Weather Service Billings MT
430 AM MDT Wed Jun 16 2021

MTZ123>131-WYZ274-161130-
/O.CAN.KBYZ.FW.W.0005.000000T0000Z-210616T1200Z/
Gallatin National Forest-Wheatland County/Sweet Grass County-
Stillwater County-Beartooth Ranger District Custer National Forest-
Golden Valley County/Musselshell county-Yellowstone County-
Crow Indian Reservation/Bighorn Canyon Rec Area-
Northern Rosebud/Northern Treasure Counties-
Northern Cheyenne Indian Reservation/Ashland Ranger District
Custer Natl Forest-Sheridan County-
430 AM MDT Wed Jun 16 2021

...RED FLAG WARNING IS CANCELLED...

The National Weather Service in Billings has cancelled the Red
Flag Warning.

Humidities are rising quickly behind an overnight cold frontal
passage. Expect much cooler but still dry conditions today, with
breezy north winds in the morning.

$$


http://weather.gov/Billings

Nearby

Red Flag Warnings in Montana, 2021 Red Flag Warnings in Wyoming, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.