Special Weather Statement, NWS Great Falls, MT

Issued

Aug 4, 2021, 8:52 PM MDT (02:52 UTC)

Expired

Aug 4, 2021, 9:30 PM MDT

In force

38 min

Issued by

NWS Great Falls, MT

Hail

0.75 in

Wind

40

County Fergus County, MT

The Billings radar (KBLX), 164 km from the middle of the area, began a volume at 02:56 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.

566 
WWUS85 KTFX 050252
SPSTFX

Special Weather Statement
National Weather Service Great Falls MT
852 PM MDT Wed Aug 4 2021
 
MTZ051-050330-
Fergus MT-
852 PM MDT Wed Aug 4 2021

...A strong thunderstorm will impact portions of east central Fergus
County through 930 PM MDT...

At 851 PM MDT, Doppler radar was tracking a strong thunderstorm 10
miles northwest of Roy, or 28 miles northeast of Lewistown, moving
east at 35 mph.

HAZARD...Winds in excess of 40 mph and penny size hail. Heavy rain 
         is also likely.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
Roy, Fergus and Valentine. 

This includes Highway 191 between mile markers 26 and 42, and between
mile markers 58 and 74.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4731 10842 4731 10859 4727 10860 4727 10871
      4719 10872 4735 10927 4752 10919 4738 10838
TIME...MOT...LOC 0251Z 289DEG 32KT 4742 10913 

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH

$$

SC

Special Weather Statements in Montana, 2021Every special weather statement 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.