Alert archive / Montana / Special Weather Statements in 2018

Special Weather Statement, NWS Great Falls, MT

August 5, 2018Fergus County, Montana

NWS Great Falls, MT issued this special weather statement at Aug 5, 2018, 8:18 PM MDT for Fergus County, Montana. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 5, 2018, 8:18 PM MDT (02:18 UTC)
Expired
Aug 5, 2018, 8:45 PM MDT
In force
27 min
Issued by
NWS Great Falls, MT

County Fergus County, MT

The radar

The Great Falls radar (KTFX), 182 km from the middle of the area, began a volume at 02:20 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.

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before this special weather statement went out at Aug 5, 5:30 PM MDT, 2 hours 48 minutes earlier.

Area forecast discussion, Aug 5, 5:30 PM MDT, 2 hours 48 minutes before
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In the hours before

Local storm report, Aug 5, 4:38 PM MDT, 3 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
438 PM MDT SUN AUG 5 2018

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

0407 PM     HAIL             2 N CLANCY              46.50N 111.98W
08/05/2018  M0.75 INCH       JEFFERSON          MT   PUBLIC

            CORRECTS PREVIOUS HAIL REPORT FROM 2 N
            CLANCY. LOTS OF DIME SIZED HAIL FELL 2 MILES
            NORTH OF CLANCY (DW9972) STRIPPED LEAVES OFF
            OF TREES AND 0.12 INCHES OF PRECIP SO FAR.
            ALSO RECEIVED A TWEET WITH IMAGE OF
            ACCUMULATING HAIL.

&&

MM
Special weather statement, Aug 5, 4:43 PM MDT, 3 hours 35 minutes before
Special Weather Statement
National Weather Service Great Falls MT
443 PM MDT SUN AUG 5 2018

MTZ012-014-053-054-052315-
Broadwater-Cascade-Central and Southern Lewis and Clark-Meagher-
443 PM MDT SUN AUG 5 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EASTERN LEWIS AND
CLARK...NORTHWESTERN BROADWATER...NORTHWESTERN MEAGHER AND SOUTH
CENTRAL CASCADE COUNTIES...

At 442 PM MDT, radar indicated strong thunderstorms were located
along a line extending from 17 miles south of Cascade to near
Townsend. Movement was northeast at 20 mph.

Brief heavy rain, winds in excess of 40 mph, and pea size hail are
possible with these storms.

Locations impacted include...
Townsend, Silos, Winston, Radersburg and Goose Bay.

These storms 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.

If you are on or near Canyon Ferry Lake, get out of the water and
move indoors or inside a vehicle. Remember, lightning can strike out
to 10 miles from the parent thunderstorm. If you can hear thunder,
you are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.

LAT...LON 4731 11141 4636 11132 4614 11164 4702 11172
TIME...MOT...LOC 2242Z 216DEG 19KT 4702 11166 4628 11159

Coulston
Special weather statement, Aug 5, 5:07 PM MDT, 3 hours 11 minutes before
Special Weather Statement
National Weather Service Great Falls MT
507 PM MDT SUN AUG 5 2018

MTZ055-052330-
Gallatin-
507 PM MDT SUN AUG 5 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN GALLATIN COUNTY...

At 507 PM MDT, a strong thunderstorm was located near Belgrade, or 7
miles northwest of Bozeman, moving east at 10 mph.

Brief heavy rain, winds in excess of 40 mph, and pea size hail are
possible with this storm.

Locations impacted include...
Bozeman, Belgrade, Four Corners and Bozeman Hot Springs.

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.

LAT...LON 4567 11132 4583 11122 4579 11089 4554 11104
TIME...MOT...LOC 2307Z 292DEG 7KT 4573 11118

Coulston
Local storm report, Aug 5, 5:46 PM MDT, 2 hours 32 minutes before
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Local storm report, Aug 5, 5:49 PM MDT, 2 hours 29 minutes before
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Local storm report, Aug 5, 5:57 PM MDT, 2 hours 21 minutes before
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Nearby

Special Weather Statements in Montana, 2018Every special weather statement in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.