Alert archive / Montana / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 89, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jun 30, 2007, 8:19 AM MDT for Sheridan County, Montana. It was in force for 26 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 30, 2007, 8:19 AM MDT (14:19 UTC)
- Expired
- Jun 30, 2007, 8:45 AM MDT
- In force
- 26 min
- Issued by
- NWS Glasgow, MT
- Area
- Counties, with a storm outline in the text
County Sheridan County, MT
The radar
The Glasgow radar (KGGW), 166 km from the middle of the area, began a volume at 14:22 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
Great_falls, MT (KTFX), launched 12:00Z, 2.3 hours before the alert went out and 474 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1747 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 30, 3:43 AM MDT, 4 hours 36 minutes earlier.
Area forecast discussion, Jun 30, 3:43 AM MDT, 4 hours 36 minutes before
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</html>Hazardous weather outlook, Jun 29, 2:22 PM MDT, 17 hours 57 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 222 PM MDT FRI JUN 29 2007 MTZ017-022-023-301200- CENTRAL AND SOUTHERN VALLEY-GARFIELD-MCCONE- 222 PM MDT FRI JUN 29 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT A LAKE WIND ADVISORY IS IN EFFECT UNTIL 4 AM SATURDAY MORNING FOR FORT PECK LAKE. AN EAST WIND OF 20 TO 30 MPH THIS EVENING WILL SHIFT INTO THE NORTHWEST AND DIMINISH TO 10 TO 20 MPH LATE TONIGHT. STRONG AND ERRATIC WIND GUSTS ARE POSSIBLE IN OR NEAR ANY THUNDERSTORMS TONIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ016-021-059>061-301200- CENTRAL AND SOUTHEAST PHILLIPS-PETROLEUM-NORTHERN PHILLIPS- SOUTHWEST PHILLIPS-NORTHERN VALLEY- 222 PM MDT FRI JUN 29 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT THERE IS THE RISK OF SEVERE THUNDERSTORMS THIS EVENING. THE PRIMARY THREAT WILL BE LARGE HAIL...BUT DAMAGING WIND GUSTS ARE ALSO POSSIBLE. THE THREAT OF SEVERE WEATHER WILL COME TO AN END LATE TONIGHT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY NO HAZARDOUS WEATHER IS ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. BOGEL
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 11:14 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 61 min |
| Jun 30, 12:10 AM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 27 min |
| Jun 30, 12:41 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 49 min |
| Jun 30, 1:42 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 63 min |
| Jun 30, 2:28 AM MDT | Severe Thunderstorm Warning | GGW | Phillips | 47 min |
| Jun 30, 2:55 AM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 16 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2007Every severe thunderstorm warning in 2007
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.