Alert archive / Montana / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 71, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Aug 9, 2003, 11:53 AM MDT for Valley County, Montana. It was in force for 52 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
- Aug 9, 2003, 11:53 AM MDT (17:53 UTC)
- Expired
- Aug 9, 2003, 12:45 PM MDT
- In force
- 52 min
- Issued by
- NWS Glasgow, MT
- Area
- Counties, with a storm outline in the text
County Valley County, MT
The radar
The Glasgow radar (KGGW), 18 km from the middle of the area, began a volume at 17:54 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, 5.9 hours before the alert went out and 17 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
- 1013 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 1493 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -37 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.3
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 Aug 9, 9:55 AM MDT, 1 hour 58 minutes earlier.
Area forecast discussion, Aug 9, 9:55 AM MDT, 1 hour 58 minutes before
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</html>Hazardous weather outlook, Aug 9, 6:06 AM MDT, 5 hours 47 minutes before
MTZ016>027-059>062-101200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GLASGOW MT 606 AM MDT SAT AUG 9 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MONTANA .DAY ONE... THUNDERSTORMS WILL MOVE ACROSS NORTHEAST MONTANA EARLY THIS MORNING. THEN ANOTHER ROUND OF THUNDERSTORMS ARE POSSIBLE ACROSS NORTHEAST MONTANA FROM LATE THIS AFTERNOON INTO THE EVENING. SOME OF THESE THUNDERSTORMS MAY BE SEVERE WITH STRONG WIND GUSTS. .DAYS TWO THROUGH SEVEN... 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
Special weather statement, Aug 9, 6:27 AM MDT, 5 hours 26 minutes before
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</html>Local storm report, Aug 9, 7:47 AM MDT, 4 hours 6 minutes before
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</html>The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 9:16 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 59 min |
| Aug 9, 10:42 AM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 63 min |
| Aug 9, 2:05 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 55 min |
| Aug 9, 3:00 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 60 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2003Every severe thunderstorm warning in 2003
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.