Alert archive / Montana / Tornado Warnings in 2005
Tornado Warning 3, NWS Great Falls, MT
NWS Great Falls, MT issued this tornado warning at Jun 20, 2005, 7:59 PM MDT for Blaine County, Montana. It was in force for 37 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
- Jun 20, 2005, 7:59 PM MDT (01:59 UTC)
- Expired
- Jun 20, 2005, 8:36 PM MDT
- In force
- 37 min
- Issued by
- NWS Great Falls, MT
- Area
- Counties, with a storm outline in the text
County Blaine County, MT
The radar
The Glasgow radar (KGGW), 159 km from the middle of the area, began a volume at 02:03 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 20, 8:01 PM MDT | HAIL 0.88 | 7 W Black Coulee Reserv, MT | |
| Jun 20, 8:10 PM MDT | FUNNEL CLOUD | Black Coulee Reservoir, MT | FUNNEL CLOUD LOCATED 200-300 FEET ABOVE GROUND. PENNY SIZE HAIL DID OCCUR WITH THIS STORM...AT THIS LOCATION. |
| Jun 20, 8:10 PM MDT | FUNNEL CLOUD | Black Coulee Reservoir, MT | FUNNEL LOCATED 200-300 FEET ABOVE GROUND...WITH PENNY SIZE HAIL. |
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 20, 4:00 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 2.0 hours before the alert went out and 160 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
- 317 J/kg
- Mixed-layer CIN
- -89 J/kg
- Mixed-layer LCL
- 2366 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KTFX 210200 TORTFX MTC005-210245- /O.NEW.KTFX.TO.W.0003.050621T0159Z-050621T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 759 PM MDT MON JUN 20 2005 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN BLAINE COUNTY IN NORTH CENTRAL MONTANA * UNTIL 845 PM MDT * AT 757 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES WEST OF BLACK COULEE RESERVOIR. THIS DANGEROUS STORM IS MOVING EAST AT 20 MPH. * THE MOST DANGEROUS PORTION OF THE STORM WILL BE... NEAR BLACK COULEE RESERVOIR BY 805 PM. IT WILL CROSS HIGHWAY 241 BY 815 PM IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND VERY HEAVY RAIN. HEAVY RAINS MAY QUICKLY FLOOD LOW LYING AREAS SUCH AS CREEKS... DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS AUTOMOBILES CAN QUICKLY STALL. A TORNADO MAY FORM AT ANYTIME. TAKE COVER NOW. ABANDON MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE TO A BASEMENT OR STORM SHELTER. OTHERWISE...MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS. LAT...LON 4900 10881 4852 10877 4845 10833 4900 10826 $$ BRUSDA
2 follow-up statements
000 WWUS55 KTFX 210215 SVSTFX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 813 PM MDT MON JUN 20 2005 MTC005-210245- /O.CON.KTFX.TO.W.0003.000000T0000Z-050621T0245Z/ BLAINE MT- 813 PM MDT MON JUN 20 2005 ...A TORNADO WARNING CONTINUES UNTIL 845 PM MDT FOR NORTHEASTERN BLAINE COUNTY... AT 807 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO DETECT A TORNADO. IT IS LOCATED NEAR BLACK COULEE NATIONAL WILDLIFE REFUGE...MOVING EAST AT 20 MPH. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING NICKEL SIZE HAIL...ALONG WITH VERY HEAVY RAINFALL. HEAVY RAINS MAY QUICKLY FLOOD LOW LYING AREAS SUCH AS CREEKS... DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS AUTOMOBILES CAN QUICKLY STALL. A TORNADO MAY FORM AT ANYTIME. TAKE COVER NOW. ABANDON MOBILE HOMES AND VEHICLES. IF POSSIBLE...MOVE TO A BASEMENT OR STORM SHELTER. OTHERWISE...MOVE TO AN INTERIOR ROOM OR HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS. LAT...LON 4900 10881 4852 10877 4845 10833 4900 10826 $$ BRUSDA
000 WWUS55 KTFX 210236 SVSTFX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 836 PM MDT MON JUN 20 2005 MTC005-210246- /O.CAN.KTFX.TO.W.0003.000000T0000Z-050621T0245Z/ BLAINE MT- 836 PM MDT MON JUN 20 2005 ...THE TORNADO WARNING FOR NORTHEASTERN BLAINE COUNTY IS CANCELLED... NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE TORNADO THAT PROMPTED THE WARNING...HAS EXITED THE WARNED AREA...THUS THE WARNING HAS BEEN CANCELLED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM THIS EVENING FOR MOST OF NORTH CENTRAL MONTANA. LAT...LON 4900 10881 4852 10877 4845 10833 4900 10826 $$ BRUSDA
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 6:56 PM MDT | Severe Thunderstorm Warning | TFX | Blaine | 64 min |
| Jun 20, 9:52 PM MDT | Severe Thunderstorm Warning | TFX | Judith Basin | 27 min |
Nearby
Tornado Warnings in Montana, 2005Every tornado warning in 2005Tornadoes in 2005
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.