Alert archive / Montana / High Wind Watches in 2011

High Wind Watch 7, NWS Glasgow, MT

December 27, 2011Petroleum County, Phillips County, Montana

NWS Glasgow, MT issued this high wind watch at Dec 27, 2011, 3:31 PM MST for Petroleum County, Phillips County, Montana. It took effect at Dec 28, 2011, 7:00 AM MST. It was in force for .

The area

The counties it named.

The facts

Issued
Dec 27, 2011, 3:31 PM MST (22:31 UTC)
In effect from
Dec 28, 2011, 7:00 AM MST
Expired
Dec 28, 2011, 3:38 AM MST
In force
Issued by
NWS Glasgow, MT

Counties Petroleum County, MT, Phillips County, MT

The radar

The Glasgow radar (KGGW), 123 km from the middle of the area, began a volume at 22:34 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 12:00Z, 10.5 hours before the alert went out and 125 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 12:00Z on 2011-12-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2011-12-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 313 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1221 m above ground
0-6 km bulk shear
60 kt
0-1 km storm-relative helicity
313 m²/s²
0-3 km storm-relative helicity
390 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this high wind watch 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 high wind watch went out at Dec 27, 9:36 AM MST, 5 hours 55 minutes earlier.

Area forecast discussion, Dec 27, 9:36 AM MST, 5 hours 55 minutes before
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Hazardous weather outlook, Dec 27, 3:30 PM MST, 1 minute before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
330 PM MST TUE DEC 27 2011

MTZ016>020-022>027-059-061-062-282230-
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
DANIELS-SHERIDAN-WESTERN ROOSEVELT-GARFIELD-MCCONE-RICHLAND-
DAWSON-PRAIRIE-WIBAUX-NORTHERN PHILLIPS-NORTHERN VALLEY-
EASTERN ROOSEVELT-
330 PM MST TUE DEC 27 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A CHANCE OF LIGHT FREEZING RAIN WEDNESDAY MORNING...ESPECIALLY
IN THE LOWER ELEVATIONS. PERSONS GOING OUTSIDE OR PLANNING DRIVING
SHOULD BEWARE OF THE POSSIBILITY OF VERY SLIPPERY CONDITIONS ON
ANY PAVEMENT.

IT WILL BE WINDY FOR MOST OF THE AREA WEDNESDAY AFTERNOON. SOME
LOCATIONS MAY HAVE SPEEDS OF WEST 25 TO 35 MPH...WITH GUSTS TO AS
HIGHS 50 MPH.

EXPECT THURSDAY TO BE WINDY AS WELL...BUT LESS THAN WEDNESDAY.
THERE IS ANOTHER POTENTIAL FOR A MAJOR WINDSTORM AGAIN SATURDAY
.SPOTTER INFORMATION STATEMENT...

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

MTZ021-060-282230-
PETROLEUM-SOUTHWEST PHILLIPS-
330 PM MST TUE DEC 27 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A HIGH WIND WATCH FROM 7 AM THROUGH 6 PM WEDNESDAY. WEST
WINDS 40 TO 50 MPH...WITH GUSTS AS HIGH AS 70 MPH ARE POSSIBLE.

EXPECT THURSDAY TO BE WINDY AS WELL...BUT LESS THAN WEDNESDAY.
THERE IS POTENTIAL FOR ANOTHER WINDSTOR SATURDAY.

.SPOTTER INFORMATION STATEMENT...

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

Nearby

High Wind Watches in Montana, 2011Every high wind watch in 2011

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.