Alert archive / Montana / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 41, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jun 7, 2018, 6:19 PM MDT for Prairie County, Montana. It was in force for 56 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 7, 2018, 6:19 PM MDT (00:19 UTC)
- Expired
- Jun 7, 2018, 7:15 PM MDT
- In force
- 56 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Prairie County, MT
The radar
The Glasgow radar (KGGW), 176 km from the middle of the area, began a volume at 00:19 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 7, 6:09 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 0.3 hours before the alert went out and 177 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
- 1368 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1662 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- -0.1
- Supercell composite
- -1.4
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 7, 12:59 PM MDT, 5 hours 20 minutes earlier.
Area forecast discussion, Jun 7, 12:59 PM MDT, 5 hours 20 minutes before
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Special weather statement, Jun 7, 1:28 PM MDT, 4 hours 51 minutes before
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</html>Special weather statement, Jun 7, 5:12 PM MDT, 1 hour 7 minutes before
Special Weather Statement National Weather Service Glasgow MT 512 PM MDT THU JUN 7 2018 MTZ017-061-080000- Northern Valley MT-Central and Southern Valley MT- 512 PM MDT THU JUN 7 2018 ...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL VALLEY COUNTY UNTIL 600 PM MDT... At 511 PM MDT, Doppler radar was tracking a strong thunderstorm 11 miles south of Hinsdale, or 22 miles west of Glasgow, moving northeast at 25 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Hinsdale, Tampico and Vandalia. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4817 10710 4827 10727 4863 10704 4839 10655 TIME...MOT...LOC 2311Z 218DEG 21KT 4824 10713 GAH
Special weather statement, Jun 7, 5:57 PM MDT, 22 minutes before
Special Weather Statement National Weather Service Glasgow MT 557 PM MDT THU JUN 7 2018 MTZ017-061-080045- Northern Valley MT-Central and Southern Valley MT- 557 PM MDT THU JUN 7 2018 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN VALLEY COUNTY UNTIL 645 PM MDT... At 556 PM MDT, Doppler radar was tracking a strong thunderstorm 10 miles northeast of Hinsdale, or 28 miles northwest of Glasgow, moving north at 30 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Thoeny. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && LAT...LON 4846 10690 4853 10712 4893 10700 4883 10642 TIME...MOT...LOC 2356Z 192DEG 25KT 4853 10699 GAH
Special weather statement, Jun 7, 6:11 PM MDT, 8 minutes before
Special Weather Statement
National Weather Service Glasgow MT
611 PM MDT THU JUN 7 2018
MTZ026-080100-
Prairie MT-
611 PM MDT THU JUN 7 2018
...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL PRAIRIE COUNTY
UNTIL 700 PM MDT...
At 611 PM MDT, Doppler radar was tracking a strong thunderstorm 15
miles southwest of Terry, moving northwest at 5 mph.
Nickel size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Terry, Zero, Mccloud and Calypso.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
A severe thunderstorm watch remains in effect until 100 AM MDT for
northeastern Montana.
LAT...LON 4660 10545 4660 10549 4666 10549 4666 10558
4674 10558 4675 10562 4683 10562 4683 10572
4700 10560 4669 10500 4657 10539 4657 10545
TIME...MOT...LOC 0011Z 151DEG 5KT 4662 10553
GAHSpecial weather statement, Jun 7, 6:15 PM MDT, 4 minutes before
Special Weather Statement National Weather Service Glasgow MT 615 PM MDT THU JUN 7 2018 MTZ017-018-061-080115- Northern Valley MT-Daniels MT-Central and Southern Valley MT- 615 PM MDT THU JUN 7 2018 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN DANIELS AND CENTRAL VALLEY COUNTIES UNTIL 715 PM MDT... At 615 PM MDT, Doppler radar was tracking a strong thunderstorm near Tampico, or 9 miles north of Glasgow, moving northeast at 25 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... St. Marie, Baylor and Larslan. PRECAUTIONARY/PREPAREDNESS ACTIONS... This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A severe thunderstorm watch remains in effect until 100 AM MDT for northeastern Montana. LAT...LON 4821 10667 4834 10685 4882 10641 4850 10589 TIME...MOT...LOC 0015Z 226DEG 22KT 4834 10668 GAH
Local storm report, Jun 7, 6:18 PM MDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
618 PM MDT THU JUN 7 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM HAIL 5 S TAMPICO 48.23N 106.84W
06/07/2018 M0.88 INCH VALLEY MT TRAINED SPOTTER
&&
BCBThe office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 7, 6:11 PM MDT | Special Weather Statement | GGW | Prairie | 49 min |
| Jun 7, 6:15 PM MDT | Special Weather Statement | GGW | Valley | 60 min |
| Jun 7, 6:42 PM MDT | Special Weather Statement | GGW | Dawson, Prairie | 63 min |
| Jun 7, 7:07 PM MDT | Special Weather Statement | GGW | Daniels | 53 min |
| Jun 7, 7:12 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland | 63 min |
| Jun 7, 7:34 PM MDT | Areal Flood Advisory | GGW | Dawson, McCone, Prairie | 2 hr |
| Jun 7, 7:48 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland, Roosevelt | 27 min |
| Jun 7, 7:50 PM MDT | Flash Flood Warning | GGW | Dawson, McCone, Prairie | 3 hr |
| Jun 7, 7:57 PM MDT | Special Weather Statement | GGW | Daniels | 63 min |
| Jun 7, 8:05 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Prairie, Richland | 43 min |
| Jun 7, 8:08 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, McCone, Richland, Roosevelt | 67 min |
| Jun 7, 8:30 PM MDT | Special Weather Statement | GGW | Sheridan | 60 min |
| Jun 7, 8:37 PM MDT | Flash Flood Warning | GGW | Dawson, McCone, Richland, Roosevelt | 3 hr |
| Jun 7, 8:43 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Sheridan | 62 min |
| Jun 7, 8:47 PM MDT | Special Weather Statement | GGW | Dawson, Prairie, Richland, Wibaux | 43 min |
| Jun 7, 8:57 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Richland, Roosevelt | 36 min |
| Jun 7, 9:03 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Richland, Roosevelt, Sheridan | 46 min |
| Jun 7, 9:28 PM MDT | Special Weather Statement | GGW | Roosevelt, Sheridan | 62 min |
| Jun 7, 9:32 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Sheridan | 35 min |
| Jun 7, 9:38 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 40 min |
| Jun 7, 10:10 PM MDT | Areal Flood Advisory | GGW | Daniels, Sheridan | 3 hr |
| Jun 8, 4:06 PM MDT | Special Weather Statement | GGW | Garfield | 54 min |
| Jun 8, 5:25 PM MDT | Special Weather Statement | GGW | McCone | 50 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2018Every severe thunderstorm warning in 2018
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.