Severe Thunderstorm Warning 148, NWS Great Falls, MT

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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
838 AM MDT SAT AUG 13 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0813 PM     TSTM WND GST     15 N HAVRE              48.76N 109.68W
08/12/2022  M58 MPH          HILL               MT   MESONET

            SITE KMTHAVRE9.

&&

HART

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GREAT FALLS MT
840 AM MDT SAT AUG 13 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0813 PM     TSTM WND GST     15 N HAVRE              48.76N 109.68W
08/12/2022  M58 MPH          HILL               MT   MESONET

            CORRECTED FOR SITE ID. SITE KMTHAVRE60.

&&

HART

Special Weather Statement
National Weather Service Great Falls MT
1007 AM MDT Sat Aug 13 2022

MTZ014-052-131645-
Jefferson MT-Central and Southern Lewis and Clark MT-
1007 AM MDT Sat Aug 13 2022

...A strong thunderstorm will impact portions of southeastern Lewis
and Clark and northern Jefferson Counties through 1045 AM MDT...

At 1005 AM MDT, trained weather spotters reported a strong
thunderstorm 11 miles southeast of Deer Lodge, moving northeast at 40
mph.

HAZARD...Half inch hail.

SOURCE...Trained weather spotters.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
Helena, Boulder, East Helena, Montana City, Basin, Wickes, Rimini,
Alhambra, Corbin, Spring Meadow Lake State Park, Elkhorn State Park,
Clancy and Jefferson City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4627 11255 4633 11254 4635 11249 4633 11246
      4639 11240 4641 11232 4660 11230 4669 11194
      4658 11176 4657 11179 4630 11179 4616 11252
      4619 11252 4618 11257 4624 11260
TIME...MOT...LOC 1605Z 245DEG 34KT 4632 11256

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

PN

Special Weather Statement
National Weather Service Great Falls MT
1046 AM MDT Sat Aug 13 2022

MTZ014-052-053-131730-
Broadwater MT-Jefferson MT-Central and Southern Lewis and Clark MT-
1046 AM MDT Sat Aug 13 2022

...A strong thunderstorm will impact portions of southeastern Lewis
and Clark, northwestern Broadwater and northeastern Jefferson
Counties through 1130 AM MDT...

At 1045 AM MDT, Doppler radar was tracking a strong thunderstorm 9
miles southwest of Montana City, or 10 miles south of Helena, moving
northeast at 40 mph.

HAZARD...Winds in excess of 30 mph and half inch hail.

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...
Helena, East Helena, Montana City, York, Rimini, Alhambra, Spring
Meadow Lake State Park, Clancy and Goose Bay.

This includes the following highways...
 Interstate 15 between mile markers 179 and 198.
 Highway 12 between mile markers 31 and 62.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4637 11222 4661 11228 4676 11169 4653 11154
TIME...MOT...LOC 1645Z 247DEG 36KT 4646 11209

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...30 MPH

PN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1131 AM MDT SAT AUG 13 2022

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1116 AM     HAIL             3 NE EAST HELENA        46.61N 111.87W
08/13/2022  E0.25 INCH       LEWIS AND CLARK    MT   TRAINED SPOTTER

            HEAVY RAIN AND SMALL HAIL WITH THUNDERSTORM.

&&

Special Weather Statement
National Weather Service Great Falls MT
1233 PM MDT Sat Aug 13 2022

MTZ012-013-050-051-054-131900-
Chouteau MT-Cascade MT-Fergus MT-Judith Basin MT-Meagher MT-
1233 PM MDT Sat Aug 13 2022

...Strong thunderstorms will impact portions of northeastern Meagher,
Judith Basin, western Fergus, south central Chouteau and southeastern
Cascade Counties through 100 PM MDT...

At 1232 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 15 miles south of Belt to 11 miles northeast of
White Sulphur Springs. Movement was northeast at 45 mph.

HAZARD...Winds in excess of 40 mph and half inch hail.

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...
Stanford, Geraldine, Geyser, Neihart, Raynesford, Windham, Monarch,
Sluice Boxes State Park, Ackley Lake State Park, Sapphire Village,
Utica, Checkerboard and Benchland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

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

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 4675 10996 4674 11003 4675 11005 4671 11015
      4671 11027 4659 11028 4655 11075 4719 11105
      4763 11026 4670 10981
TIME...MOT...LOC 1832Z 235DEG 38KT 4716 11095 4666 11071

MAX HAIL SIZE...0.50 IN
MAX WIND GUST...40 MPH

PN