Alert archive / Montana / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 64, NWS Glasgow, MT

June 19, 2016Roosevelt County, Sheridan County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 19, 2016, 12:03 AM MDT for Roosevelt County, Sheridan County, Montana. It was in force for 42 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
Jun 19, 2016, 12:03 AM MDT (06:03 UTC)
Expired
Jun 19, 2016, 12:45 AM MDT
In force
42 min
Issued by
NWS Glasgow, MT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Roosevelt County, MT, Sheridan County, MT

The radar

The Glasgow radar (KGGW), 142 km from the middle of the area, began a volume at 06:05 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 nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.1 hours before the alert went out and 140 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Glasgow Intl Airport, MT at 00:00Z on 2016-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1274 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Glasgow Intl Airport, MT at 00:00Z on 2016-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1274 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
1928 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.1
Supercell composite
10.7

Open this sounding in Storm Lab

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 Jun 18, 11:46 PM MDT, 17 minutes earlier.

Area forecast discussion, Jun 18, 11:46 PM MDT, 17 minutes before
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Hazardous weather outlook, Jun 18, 3:37 AM MDT, 20 hours 26 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
337 AM MDT SAT JUN 18 2016

MTZ016>024-059>062-190945-
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
DANIELS-SHERIDAN-WESTERN ROOSEVELT-PETROLEUM-GARFIELD-MCCONE-
RICHLAND-NORTHERN PHILLIPS-SOUTHWEST PHILLIPS-NORTHERN VALLEY-
EASTERN ROOSEVELT-
337 AM MDT SAT JUN 18 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS WILL DEVELOP IN THE LATE AFTERNOON OR EARLY EVENING
ACROSS THE AREA IN AREAS ALONG AND NORTH OF THE MISSOURI RIVER.
THE STORMS WILL CONTINUE FOR MOST OF TONIGHT. SOME SEVERE STORMS
WITH LARGE HAIL AND DAMAGING WINDS ARE LIKELY. LOCALLY HEAVY RAIN
IS ALSO POSSIBLE. THE BEST CHANCES FOR THUNDERSTORMS WILL BE ALONG
THE CANADIAN BORDER.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER TODAY AND
TONIGHT IS LOW.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A COLD FRONT WILL MOVE THROUGH NORTHEAST MONTANA LATE TONIGHT.
STRONG WEST WINDS OF 20 TO 30 MPH WITH GUSTS UP TO 45 MPH WILL
DEVELOP ACROSS THE AREA SUNDAY MORNING AND CONTINUE THROUGH SUNDAY
EVENING BEFORE DIMINISHING. A LAKE WIND ADVISORY IS LIKELY FOR
FORT PECK LAKE.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MTZ025>027-190945-
DAWSON-PRAIRIE-WIBAUX-
337 AM MDT SAT JUN 18 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A COLD FRONT WILL MOVE THROUGH NORTHEAST MONTANA LATE TONIGHT.
STRONG WEST WINDS OF 20 TO 30 MPH WITH GUSTS UP TO 45 MPH WILL
DEVELOP ACROSS THE AREA SUNDAY MORNING AND CONTINUE THROUGH SUNDAY
EVENING BEFORE DIMINISHING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jun 18, 10:35 PM MDT, 1 hour 28 minutes before
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Special weather statement, Jun 18, 10:52 PM MDT, 1 hour 11 minutes before
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Local storm report, Jun 18, 10:55 PM MDT, 1 hour 8 minutes before
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Local storm report, Jun 18, 10:58 PM MDT, 1 hour 5 minutes before
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Local storm report, Jun 18, 11:07 PM MDT, 56 minutes before
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Special weather statement, Jun 18, 11:25 PM MDT, 38 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 6:33 PM MDTSevere Thunderstorm WarningGGWPhillips57 min
Jun 18, 6:56 PM MDTSpecial Weather StatementGGW64 min
Jun 18, 7:01 PM MDTSpecial Weather StatementGGWPetroleum59 min
Jun 18, 7:22 PM MDTSevere Thunderstorm WarningGGWPhillips, Valley53 min
Jun 18, 7:38 PM MDTAreal Flood AdvisoryGGWPhillips, Valley3 hr
Jun 18, 7:49 PM MDTSpecial Weather StatementGGWPhillips56 min
Jun 18, 8:11 PM MDTSevere Thunderstorm WarningGGWDaniels, Roosevelt, Valley64 min
Jun 18, 8:18 PM MDTSpecial Weather StatementGGWGarfield57 min
Jun 18, 8:21 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley54 min
Jun 18, 8:45 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Prairie60 min
Jun 18, 9:02 PM MDTSevere Thunderstorm WarningGGWDaniels, Dawson, McCone, Richland, Roosevelt, Sheridan and 1 more58 min
Jun 18, 9:45 PM MDTSevere Thunderstorm WarningGGWDawson, McCone, Prairie60 min
Jun 18, 9:54 PM MDTSevere Thunderstorm WarningGGWDaniels, Richland, Roosevelt, Sheridan66 min
Jun 18, 10:52 PM MDTSpecial Weather StatementGGWMcCone53 min
Jun 18, 11:25 PM MDTSpecial Weather StatementGGWMcCone65 min
Jun 19, 12:52 AM MDTSpecial Weather StatementGGWRichland38 min

Nearby

Severe Thunderstorm Warnings in Montana, 2016Every severe thunderstorm warning in 2016

Sources

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.