Severe Thunderstorm Warning 51, NWS Great Falls, MT

Issued

Jul 21, 2021, 8:54 PM MDT (02:54 UTC)

Expired

Jul 21, 2021, 9:30 PM MDT

In force

36 min

Issued by

NWS Great Falls, MT

Area

Storm-based polygon

Hail

1.0 in

Wind

60.0 mph

Counties Lewis and Clark County, MT, Teton County, MT

The Great Falls radar (KTFX), 92 km from the middle of the area, began a volume at 02:58 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.

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

593 
WUUS55 KTFX 220254
SVRTFX
MTC049-099-220330-
/O.NEW.KTFX.SV.W.0051.210722T0254Z-210722T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Great Falls MT
854 PM MDT Wed Jul 21 2021

The National Weather Service in Great Falls has issued a

* Severe Thunderstorm Warning for...
  Northwestern Lewis and Clark County in west central Montana...
  Western Teton County in north central Montana...

* Until 930 PM MDT.

* At 854 PM MDT, a severe thunderstorm was located 15 miles northwest
  of Augusta, or 26 miles southwest of Choteau, moving northeast at
  40 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* Locations impacted include...
  Pishkun Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4751 11261 4760 11284 4800 11255 4786 11221
TIME...MOT...LOC 0254Z 211DEG 33KT 4763 11267 

HAIL...1.00IN
WIND...60MPH
 
$$

Ludwig/Coulston

385 
WWUS55 KTFX 220316
SVSTFX

Severe Weather Statement
National Weather Service Great Falls MT
916 PM MDT Wed Jul 21 2021

MTC049-099-220330-
/O.CON.KTFX.SV.W.0051.000000T0000Z-210722T0330Z/
Lewis and Clark MT-Teton MT-
916 PM MDT Wed Jul 21 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM MDT
FOR NORTHERN LEWIS AND CLARK AND WESTERN TETON COUNTIES...

At 916 PM MDT, a severe thunderstorm was located 15 miles west of
Choteau, moving northeast at 40 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Trained weather spotters.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Pishkun Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4763 11253 4772 11274 4800 11255 4786 11221
TIME...MOT...LOC 0316Z 211DEG 33KT 4780 11251 

HAIL...1.00IN
WIND...60MPH
 
$$

Ludwig

719 
WWUS55 KTFX 220327
SVSTFX

Severe Weather Statement
National Weather Service Great Falls MT
927 PM MDT Wed Jul 21 2021

MTC049-099-220337-
/O.EXP.KTFX.SV.W.0051.000000T0000Z-210722T0330Z/
Lewis and Clark MT-Teton MT-
927 PM MDT Wed Jul 21 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LEWIS AND CLARK AND
WESTERN TETON COUNTIES WILL EXPIRE AT 930 PM MDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.

LAT...LON 4763 11253 4772 11274 4800 11255 4786 11221
TIME...MOT...LOC 0327Z 211DEG 33KT 4780 11252 

$$

Ludwig

Severe Thunderstorm Warnings in Montana, 2021Every severe thunderstorm warning in 2021

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.