Alert archive / Montana / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 67, NWS Glasgow, MT

July 20, 2013McCone County, Roosevelt County, Valley County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jul 20, 2013, 4:57 PM MDT for McCone County, Roosevelt County, Valley County, Montana. It was in force for 63 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, 2013, 4:57 PM MDT (22:57 UTC)
Expired
Jul 20, 2013, 6:00 PM MDT
In force
63 min
Issued by
NWS Glasgow, MT
Area
Storm-based polygon

Counties McCone County, MT, Roosevelt County, MT, Valley County, MT

The radar

The Glasgow radar (KGGW), 60 km from the middle of the area, began a volume at 23:01 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, 4:22 PM MDT, 35 minutes earlier.

Area forecast discussion, Jul 20, 4:22 PM MDT, 35 minutes before
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Hazardous weather outlook, Jul 20, 4:49 PM MDT, 8 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
449 PM MDT SAT JUL 20 2013

MTZ016>027-059>062-211100-
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-
449 PM MDT SAT JUL 20 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT...
MOSTLY NEAR THE CANADIAN AND NORTH DAKOTA BORDERS. STRONGER STORMS
WILL LIKELY HAVE SOME BRIEF HEAVY RAIN...SMALL HAIL...GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A COLD FRONT MOVING THROUGH THE REGION ON SUNDAY WILL GENERATE
GUSTY NORTHWEST WIND. THEREFORE A LAKE WIND ADVISORY IS IN EFFECT
FOR FORT PECK LAKE FROM NOON UNTIL 9 PM SUNDAY.

.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, 3:15 PM MDT, 1 hour 42 minutes before
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Special weather statement, Jul 20, 3:54 PM MDT, 1 hour 3 minutes before
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Special weather statement, Jul 20, 4:33 PM MDT, 24 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 7:55 PM MDTSpecial Weather StatementGGWSheridan50 min
Jul 19, 8:20 PM MDTSpecial Weather StatementGGWSheridan40 min
Jul 19, 8:54 PM MDTSpecial Weather StatementGGWSheridan66 min
Jul 19, 9:54 PM MDTSpecial Weather StatementGGWSheridan51 min
Jul 20, 2:34 PM MDTLake Wind AdvisoryGGWGarfield, McCone, Petroleum, Phillips, Valley30 hr
Jul 20, 3:15 PM MDTSpecial Weather StatementGGWDaniels60 min
Jul 20, 3:36 PM MDTSevere Thunderstorm WarningGGWDaniels54 min
Jul 20, 3:54 PM MDTSpecial Weather StatementGGWValley66 min
Jul 20, 4:02 PM MDTSevere Thunderstorm WarningGGWValley58 min
Jul 20, 4:33 PM MDTSpecial Weather StatementGGWDaniels57 min
Jul 20, 5:31 PM MDTSpecial Weather StatementGGWRoosevelt59 min
Jul 20, 5:58 PM MDTSevere Thunderstorm WarningGGWDawson, McCone, Richland, Roosevelt62 min

Nearby

Severe Thunderstorm Warnings in Montana, 2013Every severe thunderstorm warning in 2013

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.