Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 134, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Aug 25, 2002, 3:12 PM MDT for Dawson County, Montana. It was in force for 63 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
- Aug 25, 2002, 3:12 PM MDT (21:12 UTC)
- Expired
- Aug 25, 2002, 4:15 PM MDT
- In force
- 63 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties
County Dawson County, MT
The radar
The Glasgow radar (KGGW), 166 km from the middle of the area, began a volume at 21:14 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 |
|---|---|---|---|
| Aug 25, 3:20 PM MDT | Hail 0.88 | Lindsay, 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 9.2 hours before the alert went out and 323 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
- 452 J/kg
- Mixed-layer CIN
- -223 J/kg
- Mixed-layer LCL
- 1862 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- -65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 25, 8:55 AM MDT, 6 hours 17 minutes earlier.
Area forecast discussion, Aug 25, 8:55 AM MDT, 6 hours 17 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
855 AM MDT SUN AUG 25 2002
.SHORT TERM...
ALREADY UPDATED TO BOOST POPS OVER MAINLY NORTHERN ZONES. REMNANTS
OF UPPER LOW ARE OVER CENTRAL MONTANA THIS MORNING WITH DEFORMATION
THUNDERSTORMS EXTENDING FROM WOLF POINT TO MEDICINE HAT. EXPECT
THESE STORMS TO CONTINUE TO SLOWLY PUSH NORTH THROUGH THE DAY AS THE
UPPER LOW/WAVE PUSHES EAST. THUS BEST CHANCE OF STORMS WILL BE OVER
NORTHERN ZONES TODAY. WEAKER CONVECTION OCCURING ON THE LEADING EDGE
OF THE WAVE OVER FERGUS COUNTY AND SHOULD SPREAD EAST WITH THE UPPER
WAVE. KEEPING LOW POPS OVER SOUTHERN ZONES TO ACCOUNT FOR THIS. EBERT
.LONG TERM...REMNANTS OF UPPER LOW DRIFT SOUTH AND REFORM INTO
ANOTHER CLOSED...BUT FAIRLY WEAK...UPPER LOW TO OUR WEST...A PATTERN
SIMILAR TO PAST FEW DAYS. MODELS HAVE COME INTO BETTER AGREEMENT ON
THIS IDEA. LOOKS LIKE THIS MAY HAVE INFLUENCE MOST OF 4 TO 7 DAY
PERIOD...BUT LIKELY TO END UP BEING SIMILAR TO PAST FEW DAYS WITH
ONLY ISOLATED ACTIVITY. WILL LEAVE FORECAST UNCHANGED WITH FOCUS ON
WED AND THU THUNDERSTORMS...FRI AND SAT DRY. NOT MUCH CHANGE IN
TEMPERATURE THROUGH PERIOD. SIMONSEN
KGGW TBB /084 058/081 053/076 8252223
BBBB 052/076 050/081 053/079 053/075 / 8233330000
KGDV BBB /085 059/085 053/080 8222223
BBBB 052/079 051/083 052/082 055/080 / 8233330000
.GGW...NONE.The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 1:07 PM MDT | Severe Thunderstorm Warning | GGW | Sheridan | 53 min |
| Aug 25, 2:06 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 54 min |
| Aug 25, 3:41 PM MDT | Severe Thunderstorm Warning | GGW | Richland | 64 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002
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; radar from the NEXRAD Level II archive.