Alert archive / Montana / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 28, NWS Glasgow, MT

July 20, 2017Richland County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jul 20, 2017, 2:14 PM MDT for Richland County, Montana. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 20, 2017, 2:14 PM MDT (20:14 UTC)
Expired
Jul 20, 2017, 2:33 PM MDT
In force
19 min
Issued by
NWS Glasgow, MT
Area
Storm-based polygon
Hail
1.25 in
Wind
50.0 mph

County Richland County, MT

The radar

The Glasgow radar (KGGW), 160 km from the middle of the area, began a volume at 20:17 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.

What forecasters said that day

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

NWS Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 20, 10:13 AM MDT, 4 hours 1 minute earlier.

Area forecast discussion, Jul 20, 10:13 AM MDT, 4 hours 1 minute before
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Hazardous weather outlook, Jul 20, 3:21 AM MDT, 10 hours 53 minutes before
Hazardous Weather Outlook
National Weather Service Glasgow MT
321 AM MDT Thu Jul 20 2017

MTZ016>027-059>062-210930-
Central and Southeast Phillips-Central and Southern Valley-
Daniels-Sheridan-Western Roosevelt-Petroleum-Garfield-McCone-
Richland-Dawson-Prairie-Wibaux-Northern Phillips-
Southwest Phillips-Northern Valley-Eastern Roosevelt-
321 AM MDT Thu Jul 20 2017

This Hazardous Weather Outlook is for portions of northeast
Montana.

.DAY ONE...Today and Tonight

A Red Flag Warning for low relative humidity and gusty wind is in
effect for this afternoon and evening for southwest portions of
Northeast Montana.

There is the possibility of strong thunderstorms for eastern areas
of Northeast Montana this afternoon and evening. A few storms may
become severe with damaging winds and large hail.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Critical Fire Weather conditions are possible for all zones
Friday due to low relative humidity and strong northwest wind.
The winds may also produce hazardous boating conditions on Fort
Peck Lake Friday afternoon.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

In the hours before

Special weather statement, Jul 20, 8:35 AM MDT, 5 hours 39 minutes before
Special Weather Statement
National Weather Service Glasgow MT
835 AM MDT THU JUL 20 2017

MTZ016-017-059-061-201530-
Central and Southeast Phillips MT-Northern Valley MT-
Northern Phillips MT-Central and Southern Valley MT-
835 AM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL PHILLIPS AND
NORTHWESTERN VALLEY COUNTIES UNTIL 930 AM MDT...

At 835 AM MDT, Doppler radar was tracking a strong thunderstorm near
Saco, or 21 miles east of Malta, moving northeast at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Saco and Hinsdale.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4828 10741 4843 10760 4882 10690 4851 10655
TIME...MOT...LOC 1435Z 235DEG 27KT 4840 10741

HICKFORD
Special weather statement, Jul 20, 11:49 AM MDT, 2 hours 25 minutes before
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Special weather statement, Jul 20, 1:47 PM MDT, 27 minutes before
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Special weather statement, Jul 20, 2:08 PM MDT, 6 minutes before
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The office that day

Everything else NWS Glasgow, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 20, 3:18 AM MDTRed Flag WarningGGWGarfield, McCone, Petroleum, Phillips, Valley42 hr
Jul 20, 8:35 AM MDTSpecial Weather StatementGGWValley55 min
Jul 20, 11:49 AM MDTSpecial Weather StatementGGWRoosevelt, Sheridan56 min
Jul 20, 1:47 PM MDTSpecial Weather StatementGGWDaniels43 min
Jul 20, 2:08 PM MDTSpecial Weather StatementGGWSheridan52 min
Jul 20, 2:39 PM MDTRed Flag WarningGGWDaniels, Dawson, Garfield, McCone, Petroleum, Phillips and 6 more54 hr
Jul 20, 2:40 PM MDTLake Wind AdvisoryGGWGarfield, McCone, Petroleum, Phillips, Valley13 hr

Nearby

Severe Thunderstorm Warnings in Montana, 2017Every severe thunderstorm warning in 2017

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.