Alert archive / Montana / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 21, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jun 15, 2011, 10:56 PM MDT for Dawson County, Prairie County, Montana. It was in force for 64 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 15, 2011, 10:56 PM MDT (04:56 UTC)
- Expired
- Jun 16, 2011, 12:00 AM MDT
- In force
- 64 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
Counties Dawson County, MT, Prairie County, MT
The radar
The Glasgow radar (KGGW), 202 km from the middle of the area, began a volume at 04:56 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, 4.9 hours before the alert went out and 202 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
- 2763 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
355
WUUS55 KGGW 160456
SVRGGW
MTC021-079-160600-
/O.NEW.KGGW.SV.W.0021.110616T0456Z-110616T0600Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
1056 PM MDT WED JUN 15 2011
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN PRAIRIE COUNTY IN NORTHEAST MONTANA...
SOUTHERN DAWSON COUNTY IN NORTHEAST MONTANA...
* UNTIL MIDNIGHT MDT.
* AT 1051 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THIS STORM WAS LOCATED 11 MILES SOUTH OF TERRY...AND
MOVING NORTHEAST AT 40 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
TERRY...FALLON AND LINDSAY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DAMAGING WINDS UP TO 63 MPH WERE REPORTED IN MILES CITY WITH THIS
STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY
FROM WINDOWS!
&&
LAT...LON 4657 10525 4656 10545 4659 10546 4660 10550
4665 10550 4666 10559 4684 10562 4723 10517
4709 10476 4686 10460 4666 10460 4665 10472
4661 10474 4661 10485 4656 10487 4654 10525
TIME...MOT...LOC 0455Z 244DEG 34KT 4667 10535
$$
PROTON
WEATHER.GOV/GLASGOW2 follow-up statements
248
WWUS55 KGGW 160527
SVSGGW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1127 PM MDT WED JUN 15 2011
MTC021-079-160600-
/O.CON.KGGW.SV.W.0021.000000T0000Z-110616T0600Z/
DAWSON-PRAIRIE-
1127 PM MDT WED JUN 15 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT
FOR EASTERN PRAIRIE AND SOUTHERN DAWSON COUNTIES...
AT 1121 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES SOUTHEAST OF
FALLON...OR 14 MILES EAST OF TERRY...AND MOVING NORTHEAST AT 40 MPH.
LOCATIONS IN THE WARNING INCLUDE...
MARSH...LINDSAY AND HOYT
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DAMAGING WINDS UP TO 63 MPH WERE REPORTED IN MILES CITY WITH THIS
STORM. THIS IS A DANGEROUS STORM...SEEK SAFE SHELTER AND STAY AWAY
FROM WINDOWS!
&&
LAT...LON 4657 10525 4656 10545 4659 10546 4660 10550
4665 10550 4666 10559 4684 10562 4723 10517
4709 10476 4686 10460 4666 10460 4665 10472
4661 10474 4661 10485 4656 10487 4654 10525
TIME...MOT...LOC 0526Z 244DEG 34KT 4680 10497
$$
PROTON
WEATHER.GOV/GLASGOW152
WWUS55 KGGW 160552
SVSGGW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1152 PM MDT WED JUN 15 2011
MTC021-079-160602-
/O.EXP.KGGW.SV.W.0021.000000T0000Z-110616T0600Z/
DAWSON-PRAIRIE-
1152 PM MDT WED JUN 15 2011
...THE SEVERE THUNDERSTORM WARNING FOR EASTERN PRAIRIE AND SOUTHERN
DAWSON COUNTIES WILL EXPIRE AT MIDNIGHT MDT...
AT 1147 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 7 MILES SOUTHEAST OF HOYT...OR ABOUT 15 MILES SOUTH OF
GLENDIVE...MOVING TO THE NORTHEAST AT 40 MPH. THE THUNDERSTORM HAS
WEAKENED AND WAS NO LONGER CONSIDERED SEVERE SO THE WARNING WAS
ALLOWED TO EXPIRE.
LAT...LON 4657 10525 4656 10545 4659 10546 4660 10550
4665 10550 4666 10559 4684 10562 4723 10517
4709 10476 4686 10460 4666 10460 4665 10472
4661 10474 4661 10485 4656 10487 4654 10525
TIME...MOT...LOC 0552Z 244DEG 34KT 4691 10465
$$
PROTON
WEATHER.GOV/GLASGOWThe office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 10:21 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 39 min |
| Jun 15, 11:45 PM MDT | Special Weather Statement | GGW | Wibaux | 60 min |
| Jun 16, 3:37 AM MDT | Flash Flood Watch | GGW | Daniels, Dawson, Garfield, McCone, Prairie, Richland and 4 more | 40 hr |
Nearby
Severe Thunderstorm Warnings in Montana, 2011Every severe thunderstorm warning 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.