Alert archive / Montana / Red Flag Warnings in 2021
Red Flag Warning 17, NWS Great Falls, MT
NWS Great Falls, MT issued this red flag warning at Sep 16, 2021, 2:18 PM MDT for 18 counties in Montana. It took effect at Sep 17, 2021, 11:00 AM MDT. It was in force for 34 hr. 60 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
- Sep 16, 2021, 2:18 PM MDT (20:18 UTC)
- In effect from
- Sep 17, 2021, 11:00 AM MDT
- Expired
- Sep 18, 2021, 9:00 PM MDT
- In force
- 34 hr
- Issued by
- NWS Great Falls, MT
Counties Blaine County, MT, Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Fergus County, MT, Gallatin County, MT, Glacier County, MT, Hill County, MT, Jefferson County, MT, Judith Basin County, MT, Lewis and Clark County, MT, Liberty County, MT, Meagher County, MT, Phillips County, MT, Pondera County, MT, Powell County, MT, Teton County, MT, Toole County, MT
The radar
The Great Falls radar (KTFX), 24 km from the middle of the area, began a volume at 20:20 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 |
|---|---|---|---|
| Sep 18, 3:30 AM MDT | NON-TSTM WND GST 41 | 6 Se Dutton, MT | MESONET STATION DAHMT DAHLMAN. |
| Sep 18, 5:52 AM MDT | NON-TSTM WND GST 42 | 7 Ese Hilger, MT | MESONET STATION JPKM8 JUDITH PEAK RAWS. |
| Sep 18, 9:55 AM MDT | NON-TSTM WND GST 44 | 1 Sw Three Forks, MT | AWOS STATION K9S5 THREE FORKS APT. |
| Sep 18, 10:00 AM MDT | NON-TSTM WND GST 53 | 1 Ene East Glacier Park, MT | MESONET STATION MTBRN TWO MEDICINE BRIDGE (MT DOT). |
| Sep 18, 10:04 AM MDT | NON-TSTM WND GST 47 | 7 Ssw Big Sky, MT | MESONET STATION YLWM8 YELLOW MULE RAWS. |
| Sep 18, 10:23 AM MDT | NON-TSTM WND GST 48 | 1 Ene East Glacier Park, MT | MESONET STATION MTBRN TWO MEDICINE BRIDGE (MT DOT). |
| Sep 18, 11:06 AM MDT | NON-TSTM WND GST 44 | 6 Nnw Sunburst, MT | MESONET STATION MTSWT SWEETGRASS (MT DOT). |
| Sep 18, 11:21 AM MDT | NON-TSTM WND GST 51 | 8 Se East Glacier Park, MT | MESONET STATION DCRM8 DEEP CREEK RAWS. |
| Sep 18, 11:30 AM MDT | NON-TSTM WND GST 41 | 15 Wnw Wolf Creek, MT | MESONET STATION MTROG ROGERS PASS (MT DOT). |
| Sep 18, 11:30 AM MDT | NON-TSTM WND GST 44 | Sunburst, MT | MESONET STATION MTSUN SUNBURST (MT DOT). |
| Sep 18, 11:37 AM MDT | NON-TSTM WND GST 45 | 1 Ene East Glacier Park, MT | MESONET STATION MTBRN TWO MEDICINE BRIDGE (MT DOT). |
| Sep 18, 11:46 AM MDT | NON-TSTM WND GST 48 | 2 Se Browning, MT | MESONET STATION MTBWG BROWNING (MT DOT). |
| Sep 18, 11:50 AM MDT | NON-TSTM WND GST 40 | 3 Nne Monarch, MT | MESONET STATION MTMON MONARCH CANYON (MT DOT). |
| Sep 18, 11:58 AM MDT | NON-TSTM WND GST 47 | 8 Nne Augusta, MT | AWOS STATION K1FM FOXTROT. |
| Sep 18, 12:00 PM MDT | NON-TSTM WND GST 41 | 5 Se Browning, MT | MESONET STATION SHBM BROWNING. |
| Sep 18, 12:07 PM MDT | NON-TSTM WND GST 43 | 14 Sw Simms, MT | AWOS STATION K1GM GOLF. |
| Sep 18, 12:11 PM MDT | NON-TSTM WND GST 52 | Macdonald Pass, MT | CORRECTS PREVIOUS NON-TSTM WND GST REPORT FROM MTMDP. MACDONALD PASS US-12 MP 27.9, MT. MTMDP (MT DOT) MEASURED 37G52 MPH AT 12:11 AND 12:15 PM MDT. |
| Sep 18, 12:11 PM MDT | NON-TSTM WND GST 52 | Mtmdp, MT | MACDONALD PASS US-12 MP 27.9, MT. MTMDP (MT DOT) ELEV: 6325 FT.; LAT/LON: 46.56148/-112.30931 WINDS OF 37G52 MPH OBSERVED AT 12:11 AND 12:15 PM MDT. |
| Sep 18, 12:11 PM MDT | NON-TSTM WND GST 52 | Mtmdp, MT | MACDONALD PASS US-12 MP 27.9, MT. MTMDP (MT DOT) MEASURED 37G52 MPH AT 12:11 AND 12:15 PM MDT. |
| Sep 18, 12:15 PM MDT | NON-TSTM WND GST 52 | Macdonald Pass, MT | MACDONALD PASS HWY 12 SENSOR. |
| Sep 18, 12:15 PM MDT | NON-TSTM WND GST 42 | 18 W Hogeland, MT | MESONET STATION MTM37 19.9 N ZURICH (MT-MESO). |
| Sep 18, 12:21 PM MDT | NON-TSTM WND GST 48 | 19 Ne Winston, MT | MESONET STATION TT378 PRAWS 11. |
| Sep 18, 12:28 PM MDT | NON-TSTM WND GST 45 | 6 E Marysville, MT | |
| Sep 18, 12:31 PM MDT | NON-TSTM WND GST 41 | 20 N Rudyard, MT | MESONET STATION EW1937 GOLDSTONE. |
| Sep 18, 12:35 PM MDT | NON-TSTM WND GST 46 | 1 Wnw West Yellowstone, MT | AWOS STATION KWYS W YELLOWSTONE AWOS. |
| Sep 18, 12:41 PM MDT | NON-TSTM WND GST 48 | 13 S Marysville, MT | MESONET STATION MTMDP MACDONALD PASS (MT DOT). |
| Sep 18, 12:49 PM MDT | NON-TSTM WND GST 52 | 4 W Havre, MT | ASOS STATION KHVR HAVRE AIRPORT. |
| Sep 18, 12:50 PM MDT | NON-TSTM WND GST 40 | 2 E Inverness, MT | MESONET STATION MTINV INVERNESS (MT DOT). |
| Sep 18, 12:53 PM MDT | NON-TSTM WND GST 40 | 3 Sw Lewistown, MT | ASOS STATION KLWT LEWISTOWN AIRPORT. |
| Sep 18, 12:54 PM MDT | NON-TSTM WND GST 44 | 8 W Townsend, MT | MESONET STATION EKHM8 ELKHORN RAWS - 8 W TOWNSEND. |
| Sep 18, 12:54 PM MDT | NON-TSTM WND GST 52 | 3 Sw Cut Bank, MT | ASOS STATION KCTB CUT BANK AIRPORT. |
| Sep 18, 12:55 PM MDT | NON-TSTM WND GST 41 | 1 Nne Choteau, MT | MESONET STATION KCII CHOTEAU (GTFWFO). |
| Sep 18, 1:00 PM MDT | NON-TSTM WND GST 41 | 3 Sw Amsterdam, MT | MESONET STATION MTM07 3.2 SW AMSTERDAM (MT-MESO). |
| Sep 18, 1:15 PM MDT | NON-TSTM WND GST 40 | 14 Nnw Joplin, MT | MESONET STATION DW4821 CHESTER. |
| Sep 18, 1:15 PM MDT | NON-TSTM WND GST 46 | Joplin, MT | MESONET STATION GW0416 JOPLIN. |
| Sep 18, 1:35 PM MDT | NON-TSTM WND GST 47 | 1 Wnw West Yellowstone, MT | AWOS STATION KWYS W YELLOWSTONE AWOS. |
| Sep 18, 1:37 PM MDT | NON-TSTM WND GST 43 | 1 Ene East Glacier Park, MT | MESONET STATION MTBRN TWO MEDICINE BRIDGE (MT DOT). |
| Sep 18, 1:45 PM MDT | NON-TSTM WND GST 41 | 2 Nw Windham, MT | AWOS STATION K1CM CHARLIE. |
| Sep 18, 1:48 PM MDT | NON-TSTM WND GST 44 | 2 Se Browning, MT | MESONET STATION MTBWG BROWNING (MT DOT). |
| Sep 18, 1:52 PM MDT | NON-TSTM WND GST 43 | 7 Ese Hilger, MT | MESONET STATION JPKM8 JUDITH PEAK RAWS. |
| Sep 18, 1:55 PM MDT | NON-TSTM WND GST 44 | 1 Sw Three Forks, MT | AWOS STATION K9S5 THREE FORKS APT. |
| Sep 18, 1:56 PM MDT | NON-TSTM WND GST 41 | 13 S Marysville, MT | MESONET STATION MTMDP MACDONALD PASS (MT DOT). |
| Sep 18, 2:00 PM MDT | NON-TSTM WND GST 42 | 6 Nne Augusta, MT | MESONET STATION MCBMT 5.5 NE AUGUSTA (MCSCN). |
| Sep 18, 2:00 PM MDT | NON-TSTM WND GST 44 | 5 Ese Pendroy, MT | MESONET STATION RICMT 4.9 E PENDROY (MCSCN). |
| Sep 18, 2:00 PM MDT | NON-TSTM WND GST 46 | 14 Nnw Joplin, MT | MESONET STATION DW4821 CHESTER. |
| Sep 18, 2:01 PM MDT | NON-TSTM WND GST 48 | 8 Nne Augusta, MT | AWOS STATION K1FM FOXTROT. |
| Sep 18, 2:07 PM MDT | NON-TSTM WND GST 46 | Belgrade, MT | ASOS STATION KBZN BOZEMAN YELLOWSTONE AIRPORT. |
| Sep 18, 2:15 PM MDT | NON-TSTM WND GST 41 | 20 N Rudyard, MT | MESONET STATION EW1937 GOLDSTONE. |
| Sep 18, 2:22 PM MDT | NON-TSTM WND GST 40 | 11 Sw Basin, MT | MESONET STATION MTELK ELK PARK (MT DOT). |
| Sep 18, 2:27 PM MDT | NON-TSTM WND GST 41 | 3 Sw Lewistown, MT | ASOS STATION KLWT LEWISTOWN AIRPORT. |
| Sep 18, 2:31 PM MDT | NON-TSTM WND GST 43 | 16 Nne Rudyard, MT | MESONET STATION FW1664 HINGHAM. |
| Sep 18, 2:34 PM MDT | NON-TSTM WND GST 43 | 2 E Helena, MT | ASOS STATION KHLN HELENA AIRPORT. |
| Sep 18, 2:35 PM MDT | NON-TSTM WND GST 45 | 2 E Inverness, MT | MESONET STATION MTINV INVERNESS (MT DOT). |
| Sep 18, 2:38 PM MDT | NON-TSTM WND GST 51 | 4 W Havre, MT | ASOS STATION KHVR HAVRE AIRPORT. |
| Sep 18, 2:45 PM MDT | NON-TSTM WND GST 40 | 14 W Bynum, MT | MESONET STATION DELMT DELLWO (MCSCN). |
| Sep 18, 2:46 PM MDT | NON-TSTM WND GST 44 | 10 Wsw Stockett, MT | MESONET STATION FW1843 GREAT FALLS. |
| Sep 18, 2:51 PM MDT | NON-TSTM WND GST 57 | 19 Ne Winston, MT | MESONET STATION TT378 PRAWS 11. |
| Sep 18, 2:53 PM MDT | NON-TSTM WND GST 46 | 12 Nne Checkerboard, MT | MESONET STATION SFJM8 S. FORK JUDITH RAWS -12 NE CHECKERBOARD. |
| Sep 18, 2:54 PM MDT | NON-TSTM WND GST 56 | 8 W Townsend, MT | MESONET STATION EKHM8 ELKHORN RAWS - 8 W TOWNSEND. |
| Sep 18, 3:00 PM MDT | NON-TSTM WND GST 40 | 3 Ene Benchland, MT | MESONET STATION MTM47 2.6 E BENCHLAND (MT-MESO). |
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, 8.3 hours before the alert went out and 37 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
- 1222 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- -125 m²/s²
- 0-3 km storm-relative helicity
- 96 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
618 WWUS85 KTFX 162018 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 218 PM MDT Thu Sep 16 2021 MTZ115-117-118-171130- /O.NEW.KTFX.FW.W.0017.210917T1700Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 218 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM FRIDAY TO 9 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115, 117, AND 118... The National Weather Service in Great Falls has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 11 AM Friday to 9 PM MDT Saturday. * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 11 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. 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. && $$ MTZ112>114-116-171130- /O.NEW.KTFX.FW.W.0017.210917T1700Z-210918T0200Z/ Eastern Glacier/Toole/Central/Eastern Pondera/Liberty- Hill and Blaine Counties- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front- Lincoln Ranger District of the Helena National Forest- 218 PM MDT Thu Sep 16 2021 ...RED FLAG WARNING IN EFFECT FROM 11 AM TO 8 PM MDT FRIDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 112, 113, 114, AND 116... The National Weather Service in Great Falls has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 11 AM to 8 PM MDT Friday. * AFFECTED AREA...Eastern Glacier/Toole/Central/Eastern Pondera/Liberty, Hill and Blaine Counties, Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front and Lincoln Ranger District of the Helena National Forest. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/greatfalls
7 follow-up statements
477 WWUS85 KTFX 170904 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 304 AM MDT Fri Sep 17 2021 MTZ115-117-118-180200- /O.CON.KTFX.FW.W.0017.210917T1700Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 304 AM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 9 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115, 117, AND 118... * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. 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. && $$ MTZ112>114-116-180200- /O.CON.KTFX.FW.W.0017.210917T1700Z-210918T0200Z/ Eastern Glacier/Toole/Central/Eastern Pondera/Liberty- Hill and Blaine Counties- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front- Lincoln Ranger District of the Helena National Forest- 304 AM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 112, 113, 114, AND 116... * AFFECTED AREA...Eastern Glacier/Toole/Central/Eastern Pondera/Liberty, Hill and Blaine Counties, Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front and Lincoln Ranger District of the Helena National Forest. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/greatfalls
290 WWUS85 KTFX 172047 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 247 PM MDT Fri Sep 17 2021 MTZ115-117-118-181100- /O.CON.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 247 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115, 117, AND 118... * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. 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. && $$ MTZ112>114-116-180200- /O.CON.KTFX.FW.W.0017.000000T0000Z-210918T0200Z/ Eastern Glacier/Toole/Central/Eastern Pondera/Liberty- Hill and Blaine Counties- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front- Lincoln Ranger District of the Helena National Forest- 247 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 112, 113, 114, AND 116... * AFFECTED AREA...Eastern Glacier/Toole/Central/Eastern Pondera/Liberty, Hill and Blaine Counties, Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front and Lincoln Ranger District of the Helena National Forest. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/greatfalls
047 WWUS85 KTFX 180154 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 754 PM MDT Fri Sep 17 2021 MTZ112>114-116-180300- /O.EXP.KTFX.FW.W.0017.000000T0000Z-210918T0200Z/ Eastern Glacier/Toole/Central/Eastern Pondera/Liberty- Hill and Blaine Counties- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front- Lincoln Ranger District of the Helena National Forest- 754 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 112, 113, 114, AND 116... Temperatures are cooling, and relative humidity is rising. Although gusty winds linger across the Cut Bank area, generally, winds are decreasing across these fire weather zones. For these reasons, this Red Flag Warning will be allowed to expire at 8pm MDT. $$ MTZ115-117-118-180300- /O.CON.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 754 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115, 117, AND 118... * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/greatfalls
213 WWUS85 KTFX 180157 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 757 PM MDT Fri Sep 17 2021 MTZ115-117-118-181200- /O.CON.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 757 PM MDT Fri Sep 17 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT SATURDAY FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115, 117, AND 118... * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph with gusts up to 60 mph. * RELATIVE HUMIDITY...As low as 12 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. 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. && $$ http://www.weather.gov/greatfalls
443 WWUS85 KTFX 180928 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 328 AM MDT Sat Sep 18 2021 MTZ115-117-118-190300- /O.CON.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 328 AM MDT Sat Sep 18 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 115, 117, AND 118... * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph, with gusts up to 50 mph. * RELATIVE HUMIDITY...Around 10 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/greatfalls
931 WWUS85 KTFX 181558 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 958 AM MDT Sat Sep 18 2021 MTZ113-114-190300- /O.EXA.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Hill and Blaine Counties- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front- 958 AM MDT Sat Sep 18 2021 ...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 113 AND 114... The National Weather Service in Great Falls has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect until 9 PM MDT this evening. * AFFECTED AREA...Hill and Blaine Counties and Lewis and Clark National Forest Rocky Mountain District-Rocky Mountain Front. * WINDS...Southwest 25 to 35 mph, with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. 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. && $$ MTZ115-117-118-190300- /O.CON.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 958 AM MDT Sat Sep 18 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY. FOR FIRE WEATHER ZONES 115, 117, AND 118... * AFFECTED AREA...Chouteau and Fergus Counties, Central and Eastern Lewis and Clark National Forest Areas and Helena and Townsend Ranger Districts of the Helena National Forest. * WINDS...Southwest 25 to 35 mph, with gusts up to 50 mph. * RELATIVE HUMIDITY...As low as 9 percent. * IMPACTS...Any new or existing fires may be able to grow and spread rapidly in the dry and windy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A Red Flag Warning means that critical fire weather conditions are either occurring now, or will shortly. A combination of strong winds, low relative humidity, and warm temperatures can contribute to extreme fire behavior. Please advise the appropriate officials or fire crews in these areas of this Red Flag Warning. && $$ http://www.weather.gov/greatfalls
281 WWUS85 KTFX 190252 RFWTFX URGENT - FIRE WEATHER MESSAGE National Weather Service Great Falls MT 852 PM MDT Sat Sep 18 2021 MTZ113>115-117-118-190400- /O.EXP.KTFX.FW.W.0017.000000T0000Z-210919T0300Z/ Hill and Blaine Counties- Lewis and Clark National Forest Rocky Mountain District- Rocky Mountain Front-Chouteau and Fergus Counties- Central and Eastern Lewis and Clark National Forest Areas- Helena and Townsend Ranger Districts of the Helena National Forest- 852 PM MDT Sat Sep 18 2021 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY. FOR FIRE WEATHER ZONES 113, 114, 115, 117, AND 118... With temperatures falling, Relative Humidity (RH) values rising and winds decreasing, areas of coincident low RH values and sufficiently gusty winds are expected to be small enough and brief enough to warrant the expiration of the Red Flag Warning at 9 PM MDT. $$ http://www.weather.gov/greatfalls
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 16, 1:53 PM MDT | High Wind Watch | TFX | 36 hr |
Nearby
Red Flag Warnings in Montana, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.