Alert archive / Montana / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 21, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jun 23, 2012, 9:47 AM MDT for Dawson County, Wibaux County, Montana. It was in force for 58 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 23, 2012, 9:47 AM MDT (15:47 UTC)
- Expired
- Jun 23, 2012, 10:45 AM MDT
- In force
- 58 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
Counties Dawson County, MT, Wibaux County, MT
The radar
The Glasgow radar (KGGW), 212 km from the middle of the area, began a volume at 15:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 23, 10:26 AM MDT | HAIL 1 | 9 E Glendive, MT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 3.8 hours before the alert went out and 211 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
- 1482 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
845 WUUS55 KGGW 231547 SVRGGW MTC021-109-231645- /O.NEW.KGGW.SV.W.0021.120623T1547Z-120623T1645Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GLASGOW MT 947 AM MDT SAT JUN 23 2012 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL WIBAUX COUNTY IN NORTHEAST MONTANA... EASTERN DAWSON COUNTY IN NORTHEAST MONTANA... * UNTIL 1045 AM MDT. * AT 939 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 7 MILES EAST OF GLENDIVE...AND MOVING EAST AT 10 MPH. * LOCATIONS IN THE WARNING INCLUDE... WIBAUX PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4684 10413 4704 10474 4722 10474 4727 10421 TIME...MOT...LOC 1547Z 276DEG 10KT 4712 10452 $$ GILCHRIST WEATHER.GOV/GLASGOW
1 follow-up statement
509 WWUS55 KGGW 231620 SVSGGW SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GLASGOW MT 1020 AM MDT SAT JUN 23 2012 MTC021-109-231645- /O.CON.KGGW.SV.W.0021.000000T0000Z-120623T1645Z/ DAWSON-WIBAUX- 1020 AM MDT SAT JUN 23 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 AM MDT FOR CENTRAL WIBAUX AND EASTERN DAWSON COUNTIES... AT 1011 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 9 MILES NORTH OF HODGES...OR 14 MILES EAST OF GLENDIVE...AND MOVING EAST AT 10 MPH. LOCATIONS IN THE WARNING INCLUDE... HODGES AND WIBAUX PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4702 10463 4718 10463 4727 10421 4684 10413 TIME...MOT...LOC 1620Z 276DEG 10KT 4711 10439 $$ GILCHRIST WEATHER.GOV/GLASGOW
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 9:23 AM MDT | Special Weather Statement | GGW | Dawson | 67 min |
| Jun 23, 10:39 AM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 51 min |
| Jun 23, 11:25 AM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 35 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2012Every severe thunderstorm warning in 2012
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.