Alert archive / Montana / Tornado Warnings in 2011
Tornado Warning 2, NWS Glasgow, MT
NWS Glasgow, MT issued this tornado warning at Jun 29, 2011, 7:14 PM MDT for Valley County, Montana. It was in force for 44 min. 13 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
- Jun 29, 2011, 7:14 PM MDT (01:14 UTC)
- Expired
- Jun 29, 2011, 7:58 PM MDT
- In force
- 44 min
- Issued by
- NWS Glasgow, MT
- Area
- Storm-based polygon
County Valley County, MT
The radar
The Glasgow radar (KGGW), 35 km from the middle of the area, began a volume at 01:15 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 29, 7:15 PM MDT | TORNADO | 24 Wsw Glasgow, MT | BRIEF TOUCHDOWN...DUST AND DEBRIS VISIBLE ON THE GROUND...NO VISIBLE OR KNOWN DAMAGE |
| Jun 29, 7:40 PM MDT | HAIL 1.75 | 1 Ssw Glasgow, MT | GOLF BALL SIZE HAIL. SMALL TREE LIMBS DOWN EST 50-60 MPH WINDS. |
| Jun 29, 7:40 PM MDT | HAIL 1.75 | Glasgow, MT | 1.75 INCH HAIL REPORTED WITH 65 MPH WINDS. |
| Jun 29, 7:40 PM MDT | HAIL 2 | Ne Glasgow, MT | 2 INCH HAIL REPORTED BY A TRAINED SPOTTER. |
| Jun 29, 7:42 PM MDT | HAIL 1 | Glasgow, MT | MOSTLY DIME SIZED HAIL. SOME QUARTER SIZE HAIL. |
| Jun 29, 7:42 PM MDT | HAIL 1.5 | Glasgow, MT | ESTIMATED 1 1/2 INCH HAIL. |
| Jun 29, 7:42 PM MDT | HAIL 2 | 6 W Glasgow, MT | ESTIMATED 2 INCH HAIL. |
| Jun 29, 7:45 PM MDT | HAIL 2 | Glasgow, MT | MEASURED 2 INCH HAIL. |
| Jun 29, 7:48 PM MDT | HAIL 2 | Glasgow, MT | MEASURED 2 1/4 INCH HAIL AT THE OFFICE. |
| Jun 29, 7:53 PM MDT | HAIL 1.75 | Glasgow, MT | ESTIMATED 1 3/4 INCH HAIL AND 65 MPH WIND. |
| Jun 29, 7:58 PM MDT | TSTM WND GST 0 | Glasgow, MT | GUST OF 47 MPH AT GLASGOW ASOS. |
| Jun 29, 8:00 PM MDT | TSTM WND GST 54 | Glasgow, MT | GLASGOW ASOS REPORTED A GUST OF 54 MPH |
| Jun 29, 8:05 PM MDT | HAIL 1 | 3 W Vandalia, MT | QUARTER SIZE HAIL REPORTED |
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 |
|---|---|---|---|
| Jun 29, 3:46 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 29, 7:03 PM MDT | Tornado Watch | SPC | 4 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.2 hours before the alert went out and 37 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
- 2773 J/kg
- Mixed-layer CIN
- -109 J/kg
- Mixed-layer LCL
- 2014 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.3
The text
As transmitted, in the capitals the NWS used until 2016.
144
WFUS55 KGGW 300114
TORGGW
MTC105-300215-
/O.NEW.KGGW.TO.W.0002.110630T0114Z-110630T0215Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
714 PM MDT WED JUN 29 2011
THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL VALLEY COUNTY IN NORTHEAST MONTANA...
* UNTIL 815 PM MDT.
* AT 710 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO 26
MILES SOUTHWEST OF TAMPICO...OR 28 MILES SOUTHWEST OF GLASGOW...
MOVING NORTHEAST AT 45 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
TAMPICO AND GLASGOW
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT WEDNESDAY EVENING
FOR NORTHEAST MONTANA.
&&
LAT...LON 4839 10695 4809 10636 4794 10720 4806 10741
4807 10740 4816 10740
TIME...MOT...LOC 0114Z 246DEG 37KT 4805 10714
$$
SCHNETZLER
WEATHER.GOV/GLASGOW2 follow-up statements
408
WWUS55 KGGW 300139
SVSGGW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
739 PM MDT WED JUN 29 2011
MTC105-300215-
/O.CON.KGGW.TO.W.0002.000000T0000Z-110630T0215Z/
VALLEY-
739 PM MDT WED JUN 29 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM MDT FOR CENTRAL
VALLEY COUNTY...
AT 734 PM MDT...WEATHER SPOTTERS REPORTED A TORNADO. THIS TORNADO
WAS LOCATED 8 MILES EAST OF THE BENTONITE PLANT...OR 11 MILES
SOUTHWEST OF GLASGOW...AND MOVING NORTHEAST AT 45 MPH.
LOCATIONS IN THE WARNING INCLUDE...
TAMPICO...GLASGOW AND WHATLEY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.
IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT WEDNESDAY EVENING
FOR NORTHEAST MONTANA.
&&
LAT...LON 4802 10684 4816 10707 4828 10717 4839 10695
4809 10636
TIME...MOT...LOC 0139Z 246DEG 37KT 4815 10679
$$
SCHNETZLER
WEATHER.GOV/GLASGOW907
WWUS55 KGGW 300158
SVSGGW
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
758 PM MDT WED JUN 29 2011
MTC105-300205-
/O.CAN.KGGW.TO.W.0002.000000T0000Z-110630T0215Z/
VALLEY-
758 PM MDT WED JUN 29 2011
...THE TORNADO WARNING FOR CENTRAL VALLEY COUNTY IS CANCELLED...
AT 753 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE TORNADO WARNING HAS WEAKENED AND
WAS DOWN-GRADED TO A SEVERE THUNDERSTORM WARNING. THUNDERSTORMS WILL
CONTINUE TO PRODUCE POSSIBLE GOLF BALL SIZED HAIL AND 70 MPH WINDS.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT WEDNESDAY EVENING
FOR NORTHEAST MONTANA. A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN
EFFECT UNTIL 900 PM MDT WEDNESDAY EVENING FOR NORTHEAST MONTANA.
LAT...LON 4802 10684 4816 10707 4828 10717 4839 10695
4809 10636
TIME...MOT...LOC 0155Z 246DEG 37KT 4821 10656
$$
SCHNETZLER
WEATHER.GOV/GLASGOWThe office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 6:00 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 60 min |
| Jun 29, 6:16 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 59 min |
| Jun 29, 6:32 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 58 min |
| Jun 29, 6:46 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 59 min |
| Jun 29, 6:54 PM MDT | Tornado Warning | GGW | Phillips, Valley | 36 min |
| Jun 29, 7:06 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 39 min |
| Jun 29, 7:14 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 35 min |
| Jun 29, 7:23 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 67 min |
| Jun 29, 7:43 PM MDT | Severe Thunderstorm Warning | GGW | Phillips, Valley | 53 min |
| Jun 29, 8:09 PM MDT | Special Weather Statement | GGW | McCone | 51 min |
| Jun 29, 8:11 PM MDT | Tornado Warning | GGW | Daniels, Valley | 23 min |
| Jun 29, 8:23 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Valley | 52 min |
| Jun 29, 9:01 PM MDT | Special Weather Statement | GGW | McCone | 59 min |
| Jun 29, 9:07 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Roosevelt, Sheridan | 53 min |
| Jun 29, 9:22 PM MDT | Tornado Warning | GGW | Daniels, Roosevelt, Sheridan | 40 min |
| Jun 29, 9:52 PM MDT | Special Weather Statement | GGW | 53 min | |
| Jun 29, 9:56 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 49 min |
| Jun 29, 9:57 PM MDT | Special Weather Statement | GGW | Dawson, Richland, Roosevelt | 63 min |
Nearby
Tornado Warnings in Montana, 2011Every tornado warning in 2011Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.