Alert archive / Montana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 50, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jul 5, 2001, 10:45 PM MDT for Prairie County, Montana. It was in force for 60 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 5, 2001, 10:45 PM MDT (04:45 UTC)
- Expired
- Jul 5, 2001, 11:45 PM MDT
- In force
- 60 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Prairie County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 5, 11:30 PM MDT | Hail 0.75 | Terry, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 5, 8:00 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 4.8 hours before the alert went out and 177 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
- 2576 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 2345 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 108 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 5, 9:25 PM MDT, 1 hour 20 minutes earlier.
Area forecast discussion, Jul 5, 9:25 PM MDT, 1 hour 20 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
925 PM MDT THU JUL 5 2001
SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 07Z FOR EASTERN ZONES.
SEVERE WEATHER IN PROGRESS OVER EASTERN HALF OF CWA. NOT ENOUGH TIME
FOR IN DEPTH FORECAST DISCUSSION. POHL
EXTENDED...SOUTHWEST CONUS HIGH CONTINUES TO DOMINATE THE WEATHER
PATTERN THROUGH THE EXTENDED PERIOD. HIGH PULLS MONSOONAL MOISTURE
NORTH TOWARD MONTANA BUT MODELS KEEPING NORTHERN MONTANA ON THE
PERIPHERY OF MOISTURE STREAM. JET PULLS FURTHER NORTH INTO CANADA
WITH WEAK SHORTWAVE ENERGY ROTATING AROUND HIGH INTO MONTANA. TIMING
AND STRENGTH OF THESE WAVES STILL AN ISSUE BUT AVN SUGGESTING BEST
POSSIBILITY FOR THUNDERSTORMS DURING THE PERIOD WILL BE SUNDAY WITH
A WEAK FRONT PUSHING ACROSS CWA. REMAINDER OF PERIOD MARGINAL FOR
THUNDERSTORMS BUT WILL KEEP DRY WORDING FOR NOW. EBERT
KGGW 062/082 053/086 057/087 057/087 059/088 060/086 060/086
BBTBBBB 873111/9032222
KGDV 062/083 052/086 056/087 056/088 058/089 057/085 059/086
BBTBBBB 875111/9032222In the hours before
Local storm report, Jul 5, 10:22 PM MDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
1022 PM MDT THU JUL 5 2001
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0840 PM 15 N BROCKTON MT 60 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0840 PM 17 N BROCKTON MT 80 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0840 PM 18 W FROID MT 80 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0850 PM IN TOWN GLENDIVE MT .88 INCH HAIL
07/05/01 DAWSON
0850 PM 10 W FROID MT WIND DAMAGE
07/05/01 ROOSEVELT TRACTOR/TRAILER BLOWN OVER
0852 PM 11 W FROID MT 80 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0920 PM HOMESTEAD MT 60 MPH TSTM WIND GUST
07/05/01 SHERIDAN
0921 PM 25 NW (SDY)SIDNEY-RICHLANDMT(GDV)GLENDIVE-DAWSON TORNADO
07/05/01 RICHLAND
0921 PM 25 NW SIDNEY MT TORNADO
07/05/01 RICHLAND
APLocal storm report, Jul 5, 10:22 PM MDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GLASGOW MT
1022 PM MDT THU JUL 5 2001
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0840 PM 15 N BROCKTON MT 60 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0840 PM 17 N BROCKTON MT 80 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0840 PM 18 W FROID MT 80 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0850 PM IN TOWN GLENDIVE MT .88 INCH HAIL
07/05/01 DAWSON
0850 PM 10 W FROID MT WIND DAMAGE
07/05/01 ROOSEVELT TRACTOR/TRAILER BLOWN OVER
0852 PM 11 W FROID MT 80 MPH TSTM WIND GUST
07/05/01 ROOSEVELT
0920 PM HOMESTEAD MT 60 MPH TSTM WIND GUST
07/05/01 SHERIDAN
0921 PM 25 NW SIDNEY MT TORNADO
07/05/01 RICHLAND
APThe office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 5, 8:01 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt | 89 min |
| Jul 5, 8:17 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 58 min |
| Jul 5, 8:47 PM MDT | Severe Thunderstorm Warning | GGW | Roosevelt, Sheridan | 88 min |
| Jul 5, 9:31 PM MDT | Tornado Warning | GGW | Richland | 59 min |
| Jul 5, 9:33 PM MDT | Tornado Warning | GGW | Roosevelt | 42 min |
| Jul 5, 9:54 PM MDT | Severe Thunderstorm Warning | GGW | Dawson | 36 min |
| Jul 5, 10:30 PM MDT | Severe Thunderstorm Warning | GGW | Dawson, Wibaux | 60 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2001Every severe thunderstorm warning 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.