Alert archive / Montana / Tornado Warnings in 2010
Tornado Warning 21, NWS Glasgow, MT
NWS Glasgow, MT issued this tornado warning at Aug 11, 2010, 7:01 PM MDT for Daniels County, Montana. It was in force for 29 min. 3 reports 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
- Aug 11, 2010, 7:01 PM MDT (01:01 UTC)
- Expired
- Aug 11, 2010, 7:30 PM MDT
- In force
- 29 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
County Daniels County, MT
The radar
The Glasgow radar (KGGW), 127 km from the middle of the area, began a volume at 01:01 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 |
|---|---|---|---|
| Aug 11, 7:28 PM MDT | FUNNEL CLOUD | 1 S Whitetail, MT | NO ROTATION...CLOUDS DROPPING DOWN AND RECEDING BACK INTO THUNDERSTORM. |
| Aug 11, 7:28 PM MDT | FUNNEL CLOUD | Sse Whitetail, MT | NO ROTATION...CLOUDS DROPPING DOWN AND RECEDING BACK INTO THUNDERSTORM. |
| Aug 11, 7:30 PM MDT | HAIL 1.75 | 9 Ne Scobey, MT | HAIL GOLF BALL SIZED.SEVEN TENTHS OF AN INCH OF RAIN IN HALF AN HOUR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 11, 4:50 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.0 hours before the alert went out and 124 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
- 1592 J/kg
- Mixed-layer CIN
- -33 J/kg
- Mixed-layer LCL
- 2371 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- 119 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
As transmitted, in the capitals the NWS used until 2016.
380 WFUS55 KGGW 120101 TORGGW MTC019-120130- /O.NEW.KGGW.TO.W.0021.100812T0101Z-100812T0130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GLASGOW MT 701 PM MDT WED AUG 11 2010 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN DANIELS COUNTY IN NORTHEAST MONTANA... * UNTIL 730 PM MDT. * AT 656 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES SOUTHWEST OF PORT OF SCOBEY...OR 9 MILES NORTH OF SCOBEY...MOVING EAST AT 25 MPH. * LOCATIONS IN THE WARNING INCLUDE... PORT OF SCOBEY...WHITETAIL AND PORT OF WHITETAIL PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOLF BALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT THURSDAY MORNING FOR NORTHEAST MONTANA. && LAT...LON 4881 10505 4882 10551 4900 10558 4901 10506 TIME...MOT...LOC 0100Z 263DEG 20KT 4892 10545 $$ RSMITH WEATHER.GOV/GLASGOW
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 6:33 PM MDT | Tornado Warning | GGW | Daniels | 27 min |
| Aug 11, 6:41 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Valley | 64 min |
| Aug 11, 6:50 PM MDT | Special Weather Statement | GGW | Richland | 55 min |
| Aug 11, 7:24 PM MDT | Tornado Warning | GGW | Daniels, Sheridan | 36 min |
| Aug 11, 7:28 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 30 min |
| Aug 11, 7:36 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 54 min |
| Aug 11, 7:52 PM MDT | Tornado Warning | GGW | Daniels | 23 min |
| Aug 11, 7:56 PM MDT | Tornado Warning | GGW | Daniels, Sheridan | 34 min |
| Aug 11, 8:21 PM MDT | Severe Thunderstorm Warning | GGW | Daniels | 54 min |
| Aug 11, 8:26 PM MDT | Tornado Warning | GGW | Sheridan | 34 min |
| Aug 11, 8:43 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 62 min |
| Aug 11, 8:59 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 50 min |
| Aug 11, 9:05 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 55 min |
| Aug 11, 9:20 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Sheridan | 19 min |
| Aug 11, 9:30 PM MDT | Severe Thunderstorm Warning | GGW | Garfield, Valley | 60 min |
| Aug 11, 10:16 PM MDT | Severe Thunderstorm Warning | GGW | McCone, Valley | 59 min |
| Aug 12, 2:56 PM MDT | Lake Wind Advisory | GGW | Garfield, McCone, Petroleum, Phillips, Valley | 30 hr |
| Aug 12, 5:22 PM MDT | Special Weather Statement | GGW | Dawson | 23 min |
Nearby
Tornado Warnings in Montana, 2010Every tornado warning in 2010Tornadoes in 2010
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.