Alert archive / Montana / Tornado Warnings in 2001
Tornado Warning 3, NWS Glasgow, MT
NWS Glasgow, MT issued this tornado warning at Jul 12, 2001, 5:18 PM MDT for Garfield County, Montana. It was in force for 57 min. 1 report came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jul 12, 2001, 5:18 PM MDT (23:18 UTC)
- Expired
- Jul 12, 2001, 6:15 PM MDT
- In force
- 57 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Garfield County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 12, 5:25 PM MDT | Hail 2 | Edwards, MT |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.3 hours before the alert went out and 126 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
- 32 J/kg
- Mixed-layer CIN
- -371 J/kg
- Mixed-layer LCL
- 1152 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KGGW 122319 TORGGW MTC033-130015- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE GLASGOW MT 518 PM MDT THU JUL 12 2001 THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A * TORNADO WARNING FOR... GARFIELD COUNTY IN NORTHEAST MONTANA * UNTIL 615 PM MDT * AT 506 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO 10 MILES SOUTHEAST OF STEVE FORKS...OR ABOUT 19 MILES SOUTHWEST OF JORDAN...MOVING SOUTHEAST AT 25 MPH. * THE TORNADO PRODUCING STORM WILL REMAIN OVER... RURAL CENTRAL AND SOUTHERN GARFIELD COUNTY THE PUBLIC REPORTED A FUNNEL CLOUD 12 MILES SOUTHWEST OF JORDAN AT 515 PM. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. THIS WARNING REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR THE AREA. LAT...LON 4737 10722 4725 10748 4678 10697 4695 10671 .END 91
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Jul 12, 2:29 PM MDT, 2 hours 49 minutes earlier.
Area forecast discussion, Jul 12, 2:29 PM MDT, 2 hours 49 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
229 PM MDT THU JUL 12 2001
THIS AFTERNOON A DEW POINT FRONT ACROSS CENTRAL MONTANA. DEW POINTS
ACROSS THE CWFA IN THE MID TO UPPER 60S. CONVECTION FIRING OVER
WESTERN MONTANA WITH A SHORTWAVE MOVING THROUGH THE WESTERN PART OF
THE STATE THIS AFTERNOON. THIS WAVE CONTINUES TO NNE A PIECE OF THIS
WAVE WILL MOVE ACROSS THE WESTERN AREAS THIS EVENING AND TONIGHT.
THIS EVENING...SHRA/TSRA SHOULD MOVING INTO THE REGION MAINLY OVER
THE WESTERN CWFA...ALREADY HAVING AFTERNOON POPCORN CONVECTION OVER
THE SOUTHERN CWFA WITH DAYTIME HEATING. SPC SWODY1 UPDATE PUTS THE
WESTERN ZONES IN A SLGT RISK FOR SVR. TIME HEIGHT SOUNDINGS SHOW A
BETTER SHEAR ENVIRONMENT FOR THIS EVENING ACROSS THE WEST...WET BULB
ZEROS ARE PRETTY HIGH FOR A SIGNIFICANT THREAT OF LARGE
HAIL...HOWEVER STRONG GUSTS CAN BE EXPECTED WITH LARGER STORMS...AND
MOST OF ALL VERY HEAVY RAINFALL. WILL HOLD UP ON A FLASH FLOOD WATCH
FOR THE EASTERN ZONES SINCE THE BEST CHANCE FOR TSRA REMAINS WEST
AND SOUTH.
AFTER THE CONVECTION MOVES OUT LATE THIS EVENING...DO EXPECT ANOTHER
ROUND OF LOWS ST/FG FOR THE EARLY MORNING HOURS FOR THE MISSOURI AND
MILK RIVER VALLEYS. WILL ADD AM FG TO THE ZONES. ETA TRIES TO KEEP
LOW CLOUDS IN ALL DAY ON FRIDAY...HOWEVER DO EXPECT WITH THIS TIME
OF YEAR THE CLOUDS WILL LIFT OUT WITH THE HEATING OF THE DAY.
LOOKING FOR MORE OF THE SAME WITH PM TSRA AGAIN. SAME PATTERN FOR
SATURDAY CONTINUES.
FOR TEMPS...GOING TO STAY WITH THE STATUS QUO...MODELS ARE TRYING TO
COOL DOWN THE TEMPS SOME ON SATURDAY...HOWEVER NOT BUYING INTO THAT
YET...WILL KEEP THEM UP. PROTON
EXTENDED...MODELS SUGGEST AN OMEGA BLOCK DEVELOPING OVER NORTH
AMERICA DURING THE EXTENDED PERIOD. THE UPPER LEVEL RIDGE IS
FORECAST TO REMAIN EAST OF MONTANA WITH A DEEP TROUGH ALONG THE WEST
COAST AND AN UPPER LOW OVER SOUTHWEST CANADA. THIS PATTERN KEEPS
NORTHEAST MONTANA IN SOUTHWEST FLOW ALOFT FOR THE ENTIRE PERIOD.
WILL CONTINUE WITH CHANCE POPS EACH DAY WITH TEMPERATURES REMAINING
NEAR NORMAL. WATERHOUSE
KGGW 064/088 062/088 062/088 061/087 060/086 060/086 059/085
TTTTTTT 943232/9933333
KGDV 064/090 064/092 063/090 062/089 061/088 060/087 059/086
TTTTTTT 943232/9933333
.GGW...NONE.The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 4:04 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 56 min |
| Jul 12, 4:35 PM MDT | Flash Flood Warning | GGW | Garfield | 3 hr |
| Jul 12, 4:52 PM MDT | Severe Thunderstorm Warning | GGW | Garfield | 53 min |
Nearby
Tornado Warnings in Montana, 2001Every tornado warning in 2001Tornadoes in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.