Alert archive / Montana / Red Flag Warnings in 2021

Red Flag Warning 5, NWS Great Falls, MT

June 30, 20215 counties in Montana

NWS Great Falls, MT issued this red flag warning at Jun 30, 2021, 3:06 AM MDT for 5 counties in Montana. It took effect at Jul 1, 2021, 9:00 AM MDT. It was in force for 36 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: Jun 30, 2021, 3:06 AM MDT (09:06 UTC)
In effect from: Jul 1, 2021, 9:00 AM MDT
Expired: Jul 2, 2021, 9:00 PM MDT
In force: 36 hr
Issued by: NWS Great Falls, MT

Counties Blaine County, MT, Chouteau County, MT, Fergus County, MT, Hill County, MT, Phillips County, MT

The radar

The Great Falls radar (KTFX), 169 km from the middle of the area, began a volume at 09:08 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

Great_falls, MT (KTFX), launched 00:00Z, 9.1 hours before the alert went out and 118 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3409 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: -22 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

239 
WWUS85 KTFX 300906
RFWTFX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Great Falls MT
306 AM MDT Wed Jun 30 2021

MTZ113-302300-
/O.UPG.KTFX.FW.A.0004.210701T1500Z-210702T0300Z/
/O.NEW.KTFX.FW.W.0005.210701T1500Z-210702T0600Z/
Hill and Blaine Counties-
306 AM MDT Wed Jun 30 2021

...RED FLAG WARNING IN EFFECT FROM 9 AM THURSDAY TO MIDNIGHT MDT
THURSDAY NIGHT FOR HOT TEMPERATURES, GUSTY WINDS, AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONE 113...

The National Weather Service in Great Falls has issued a Red Flag
Warning for hot temperatures, gusty winds, and low relative
humidity, which is in effect from 9 AM Thursday to midnight MDT
Thursday night. The Fire Weather Watch has been replaced by this
warning.

* AFFECTED AREA...Hill and Blaine Counties.

* TEMPERATURES...Highs of 95 to 100.

* WINDS...Southeast 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 13 percent.

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.

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/greatfalls

5 follow-up statements

422 
WWUS85 KTFX 302019
RFWTFX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Great Falls MT
219 PM MDT Wed Jun 30 2021

MTZ115-011130-
/O.EXB.KTFX.FW.W.0005.210701T1500Z-210703T0300Z/
Chouteau and Fergus Counties-
219 PM MDT Wed Jun 30 2021

...RED FLAG WARNING IN EFFECT FROM 9 AM THURSDAY TO 9 PM MDT
FRIDAY FOR HOT TEMPERATURES, GUSTY WINDS, AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONE 115...

The National Weather Service in Great Falls has issued a Red Flag
Warning for hot temperatures, gusty winds, and low relative
humidity, which is in effect from 9 AM Thursday to 9 PM MDT
Friday.

* AFFECTED AREA...Chouteau and Fergus Counties.

* TEMPERATURES...Highs of 95 to 100.

* WINDS...South 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 15 percent.

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.

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

MTZ113-011130-
/O.EXT.KTFX.FW.W.0005.210701T1500Z-210703T0300Z/
Hill and Blaine Counties-
219 PM MDT Wed Jun 30 2021

...RED FLAG WARNING NOW IN EFFECT FROM 9 AM THURSDAY TO 9 PM MDT
FRIDAY FOR HOT TEMPERATURES, GUSTY WINDS, AND LOW RELATIVE
HUMIDITY FOR FIRE WEATHER ZONE 113...

* AFFECTED AREA...Hill and Blaine Counties.

* TEMPERATURES...Highs of 95 to 100.

* WINDS...Southeast 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 13 percent.

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.

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/greatfalls

610 
WWUS85 KTFX 010924
RFWTFX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Great Falls MT
324 AM MDT Thu Jul 1 2021

MTZ113-115-012300-
/O.CON.KTFX.FW.W.0005.210701T1500Z-210703T0300Z/
Hill and Blaine Counties-Chouteau and Fergus Counties-
324 AM MDT Thu Jul 1 2021

...RED FLAG WARNING REMAINS IN EFFECT FROM 9 AM THIS MORNING TO
9 PM MDT FRIDAY FOR HOT TEMPERATURES, GUSTY WINDS, AND LOW
RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 113 and 115...

* AFFECTED AREA...Hill and Blaine Counties and Chouteau and 
  Fergus Counties.

* TEMPERATURES...Highs of 95 to 100.

* WINDS...South 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

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.

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/greatfalls

217 
WWUS85 KTFX 020931
RFWTFX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Great Falls MT
331 AM MDT Fri Jul 2 2021

MTZ113-115-030045-
/O.CON.KTFX.FW.W.0005.000000T0000Z-210703T0300Z/
Hill and Blaine Counties-Chouteau and Fergus Counties-
331 AM MDT Fri Jul 2 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR HOT TEMPERATURES, GUSTY WINDS, AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONE 113 AND 115...

* AFFECTED AREA...Hill and Blaine Counties and Chouteau and 
  Fergus Counties.

* TEMPERATURES...Highs of 95 to 100.

* WINDS...South 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

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.

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/greatfalls

920 
WWUS85 KTFX 021858
RFWTFX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Great Falls MT
1258 PM MDT Fri Jul 2 2021

MTZ113-115-030300-
/O.CON.KTFX.FW.W.0005.000000T0000Z-210703T0300Z/
Hill and Blaine Counties-Chouteau and Fergus Counties-
1258 PM MDT Fri Jul 2 2021

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING
FOR HOT TEMPERATURES, GUSTY WINDS, AND LOW RELATIVE HUMIDITY FOR
FIRE WEATHER ZONE 113 AND 115...

* AFFECTED AREA...Hill and Blaine Counties and Chouteau and 
  Fergus Counties.

* TEMPERATURES...In the upper 90s.

* WINDS...South 10 to 20 mph, with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 12 percent.

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.

Please advise the appropriate officials or fire crews in these
areas of this Red Flag Warning.

&&

$$

http://www.weather.gov/greatfalls

792 
WWUS85 KTFX 030247
RFWTFX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Great Falls MT
847 PM MDT Fri Jul 2 2021

MTZ113-115-030400-
/O.EXP.KTFX.FW.W.0005.000000T0000Z-210703T0300Z/
Hill and Blaine Counties-Chouteau and Fergus Counties-
847 PM MDT Fri Jul 2 2021

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR HOT
TEMPERATURES, GUSTY WINDS, AND LOW RELATIVE HUMIDITY FOR FIRE 
WEATHER ZONES 113 AND 115...

Hot and dry conditions will remain through the weekend, but with
winds falling below critical fire weather criteria. However, the
hot and dry conditions will still provide for highly elevated fire
weather conditions, especially from late morning through early
evening. Please use caution and do your part to help prevent 
wildfires. 

$$

http://www.weather.gov/greatfalls

Nearby

Red Flag Warnings in Montana, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.