Alert archive / Montana / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 3, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jun 2, 2012, 5:50 PM MDT for Blaine County, Chouteau County, Fergus County, Montana. It was in force for 70 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 2, 2012, 5:50 PM MDT (23:50 UTC)
- Expired
- Jun 2, 2012, 7:00 PM MDT
- In force
- 70 min
- Issued by
- NWS Great Falls, MT
- Area
- Storm-based polygon
Counties Blaine County, MT, Chouteau County, MT, Fergus County, MT
The radar
The Glasgow radar (KGGW), 171 km from the middle of the area, began a volume at 23:50 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 2, 2:10 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 11.8 hours before the alert went out and 141 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
- 1977 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 28 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
285
WUUS55 KTFX 022350
SVRTFX
MTC005-015-027-030100-
/O.NEW.KTFX.SV.W.0003.120602T2350Z-120603T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
550 PM MDT SAT JUN 2 2012
THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
FERGUS COUNTY IN CENTRAL MONTANA...
THIS INCLUDES THE CITY OF LEWISTOWN...
SOUTHERN BLAINE COUNTY IN NORTH CENTRAL MONTANA...
EAST CENTRAL CHOUTEAU COUNTY IN NORTH CENTRAL MONTANA...
* UNTIL 700 PM MDT
* AT 547 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 18 MILES
NORTHWEST OF WINIFRED TO 6 MILES EAST OF LEWISTOWN...MOVING EAST AT
35 MPH.
* LOCATIONS IN THE WARNING INCLUDE HAYS...LEWISTOWN...ROY AND
WINIFRED.
HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH ARE LIKELY WITH
THESE STORMS.
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.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR SOUTHWEST MONTANA.
&&
LAT...LON 4727 10870 4710 10873 4683 10963 4787 10981
4808 10857 4798 10851 4798 10860 4791 10866
4791 10887 4774 10888 4765 10877 4763 10867
4762 10845 4758 10836 4759 10830 4732 10830
TIME...MOT...LOC 2350Z 270DEG 29KT 4774 10963 4704 10928
$$3 follow-up statements
162
WWUS55 KTFX 030022
SVSTFX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
622 PM MDT SAT JUN 2 2012
MTC015-030031-
/O.CAN.KTFX.SV.W.0003.000000T0000Z-120603T0100Z/
CHOUTEAU MT-
622 PM MDT SAT JUN 2 2012
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL CHOUTEAU COUNTY
IS CANCELLED...
THE SEVERE THUNDERSTORM HAS EXITED CHOUTEAU COUNTY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR SOUTHWEST MONTANA.
LAT...LON 4727 10870 4710 10873 4702 10901 4789 10951
4808 10857 4798 10851 4798 10860 4791 10866
4791 10887 4774 10888 4765 10877 4763 10867
4762 10845 4758 10836 4759 10830 4732 10830
TIME...MOT...LOC 0021Z 270DEG 29KT 4774 10926 4704 10891
$$
MTC005-027-030100-
/O.CON.KTFX.SV.W.0003.000000T0000Z-120603T0100Z/
BLAINE MT-FERGUS MT-
622 PM MDT SAT JUN 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR NORTHEASTERN FERGUS AND SOUTHERN BLAINE COUNTIES...
AT 620 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 30 MILES NORTH OF FERGUS TO
20 MILES SOUTH OF ROY...MOVING EAST AT 35 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HAYS.
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.
&&
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR SOUTHWEST MONTANA.
LAT...LON 4727 10870 4710 10873 4702 10901 4789 10951
4808 10857 4798 10851 4798 10860 4791 10866
4791 10887 4774 10888 4765 10877 4763 10867
4762 10845 4758 10836 4759 10830 4732 10830
TIME...MOT...LOC 0021Z 270DEG 29KT 4774 10926 4704 10891
$$402
WWUS55 KTFX 030036
SVSTFX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
636 PM MDT SAT JUN 2 2012
MTC005-027-030100-
/O.CON.KTFX.SV.W.0003.000000T0000Z-120603T0100Z/
BLAINE MT-FERGUS MT-
636 PM MDT SAT JUN 2 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR NORTHEASTERN FERGUS AND SOUTH CENTRAL BLAINE COUNTIES...
AT 635 PM...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE OF
PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 25 MILES WEST
OF HAYS TO 28 MILES NORTHWEST OF WINNETT...MOVING EAST AT 35 MPH.
THE LINE OF SEVERE THUNDERSTORMS WILL OTHERWISE REMAIN OVER MAINLY
RURAL AREAS OF THE INDICATED COUNTIES.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR SOUTHWEST MONTANA.
LAT...LON 4727 10871 4710 10875 4709 10876 4790 10932
4808 10857 4798 10851 4798 10860 4791 10866
4791 10887 4774 10888 4765 10877 4763 10867
4762 10845 4758 10836 4759 10830 4732 10830
TIME...MOT...LOC 0035Z 270DEG 29KT 4790 10914 4729 10875
$$721
WWUS55 KTFX 030059
SVSTFX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREAT FALLS MT
659 PM MDT SAT JUN 2 2012
MTC005-027-030109-
/O.EXP.KTFX.SV.W.0003.000000T0000Z-120603T0100Z/
BLAINE MT-FERGUS MT-
659 PM MDT SAT JUN 2 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FERGUS AND SOUTH
CENTRAL BLAINE COUNTIES WILL EXPIRE AT 700 PM MDT...
RADAR INDICATED THAT HEAVY RAIN...SMALL HAIL...AND GUSTY WINDS WERE
STILL POSSIBLE FROM THE THUNDERSTORM.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
SATURDAY EVENING FOR SOUTHWEST MONTANA.
LAT...LON 4727 10871 4710 10875 4709 10876 4790 10932
4808 10857 4798 10851 4798 10860 4791 10866
4791 10887 4774 10888 4765 10877 4763 10867
4762 10845 4758 10836 4759 10830 4732 10830
TIME...MOT...LOC 0059Z 270DEG 29KT 4790 10885 4729 10847
$$
BRUSDAThe office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 12:05 PM MDT | Special Weather Statement | TFX | Beaverhead | 55 min |
| Jun 2, 12:45 PM MDT | Special Weather Statement | TFX | Beaverhead | 60 min |
| Jun 2, 1:38 PM MDT | Special Weather Statement | TFX | Madison | 67 min |
| Jun 2, 2:23 PM MDT | Special Weather Statement | TFX | Lewis and Clark | 22 min |
| Jun 2, 2:56 PM MDT | Special Weather Statement | TFX | Cascade | 49 min |
| Jun 2, 4:28 PM MDT | Special Weather Statement | TFX | Fergus | 47 min |
| Jun 2, 4:35 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 22 min |
| Jun 2, 4:49 PM MDT | Special Weather Statement | TFX | Gallatin | 41 min |
| Jun 2, 4:55 PM MDT | Special Weather Statement | TFX | Judith Basin | 65 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.