Alert archive / Montana / Special Weather Statements in 2016

Special Weather Statement, NWS Glasgow, MT

June 11, 2016Garfield County, Montana

NWS Glasgow, MT issued this special weather statement at Jun 11, 2016, 7:21 PM MDT for Garfield County, Montana. It was in force for 54 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: Jun 11, 2016, 7:21 PM MDT (01:21 UTC)
Expired: Jun 11, 2016, 8:15 PM MDT
In force: 54 min
Issued by: NWS Glasgow, MT

County Garfield County, MT

The radar

The Glasgow radar (KGGW), 132 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 134 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 727 J/kg
Mixed-layer CIN: -201 J/kg
Mixed-layer LCL: 1190 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 287 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

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 Glasgow, MT wrote its last area forecast discussion before this special weather statement went out at Jun 11, 3:05 PM MDT, 4 hours 16 minutes earlier.

Area forecast discussion, Jun 11, 3:05 PM MDT, 4 hours 16 minutes before

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Hazardous weather outlook, Jun 11, 3:25 AM MDT, 15 hours 56 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
325 AM MDT SAT JUN 11 2016

MTZ016>027-059>062-120900-
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-
325 AM MDT SAT JUN 11 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT ACROSS
NORTHEAST MONTANA. SOME STORMS WILL BECOME SEVERE WITH LARGE HAIL
AND DAMAGING WINDS. LOCALLY HEAVY RAINFALL IS LIKELY IN SOME
AREAS.

A LAKE WIND ADVISORY IS IN EFFECT FOR THE EAST HALF OF FORT PECK
THROUGH 4 PM THIS AFTERNOON FOR EAST WINDS 15 TO 25 MPH WITH GUSTS
TO 35 MPH.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.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 11, 3:46 PM MDT, 3 hours 35 minutes before

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Local storm report, Jun 11, 5:36 PM MDT, 1 hour 45 minutes before

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Local storm report, Jun 11, 5:38 PM MDT, 1 hour 43 minutes before

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Special weather statement, Jun 11, 6:55 PM MDT, 26 minutes before

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Special weather statement, Jun 11, 7:12 PM MDT, 9 minutes before

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Special weather statement, Jun 11, 7:21 PM MDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 6:22 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Prairie	53 min
Jun 11, 6:55 PM MDT	Special Weather Statement	GGW	Dawson, Wibaux	65 min
Jun 11, 7:12 PM MDT	Special Weather Statement	GGW	McCone, Prairie	63 min
Jun 11, 8:20 PM MDT	Special Weather Statement	GGW	Daniels, Roosevelt	55 min
Jun 11, 8:25 PM MDT	Special Weather Statement	GGW	Garfield	65 min
Jun 11, 9:28 PM MDT	Areal Flood Advisory	GGW	Daniels, Dawson, Garfield, McCone, Richland, Roosevelt and 2 more	3 hr

Nearby

Special Weather Statements in Montana, 2016 Every special weather statement 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.