Severe Thunderstorm Warning 4, NWS Great Falls, MT

Issued

Jun 9, 2021, 6:18 PM MDT (00:18 UTC)

Expired

Jun 9, 2021, 7:00 PM MDT

In force

42 min

Issued by

NWS Great Falls, MT

Area

Storm-based polygon

Hail

1.0 in

Wind

60.0 mph

County Blaine County, MT

The Great Falls radar (KTFX), 180 km from the middle of the area, began a volume at 00:18 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.

993 
WUUS55 KTFX 100018
SVRTFX
MTC005-100100-
/O.NEW.KTFX.SV.W.0004.210610T0018Z-210610T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Great Falls MT
618 PM MDT Wed Jun 9 2021

The National Weather Service in Great Falls has issued a

* Severe Thunderstorm Warning for...
  Southwestern Blaine County in north central Montana...

* Until 700 PM MDT.

* At 618 PM MDT, a severe thunderstorm was located 20 miles north of
  Winifred, or 33 miles west of Zortman, moving east at 35 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.

* This severe thunderstorm will remain over mainly rural areas of
  southwestern Blaine County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4792 10889 4775 10890 4781 10899 4779 10903
      4779 10911 4778 10913 4780 10927 4777 10928
      4776 10934 4799 10943 4824 10881 4793 10868
TIME...MOT...LOC 0018Z 264DEG 30KT 4785 10924 

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

PN

204 
WWUS55 KTFX 100037
SVSTFX

Severe Weather Statement
National Weather Service Great Falls MT
637 PM MDT Wed Jun 9 2021

MTC005-100100-
/O.CON.KTFX.SV.W.0004.000000T0000Z-210610T0100Z/
Blaine MT-
637 PM MDT Wed Jun 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR SOUTHWESTERN BLAINE COUNTY...

At 636 PM MDT, a severe thunderstorm was located 18 miles southwest
of Hays, or 22 miles west of Zortman, moving east at 35 mph.

HAZARD...Golf ball size hail and 70 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect 
         considerable tree damage. Wind damage is also likely to 
         mobile homes, roofs, and outbuildings.

This severe thunderstorm will remain over mainly rural areas of
southwestern Blaine County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4792 10889 4775 10890 4781 10899 4779 10903
      4779 10911 4778 10913 4780 10927 4777 10928
      4776 10934 4799 10943 4824 10881 4793 10868
TIME...MOT...LOC 0036Z 264DEG 30KT 4787 10901 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...70MPH
 
$$

PN

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.