Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 63, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jul 6, 2002, 8:56 PM MDT for Prairie County, Montana. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 6, 2002, 8:56 PM MDT (02:56 UTC)
- Expired
- Jul 6, 2002, 10:00 PM MDT
- In force
- 64 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties
County Prairie County, MT
The radar
The Glasgow radar (KGGW), 176 km from the middle of the area, began a volume at 02:58 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 nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 2.9 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2853 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 129 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 Jul 6, 2:15 PM MDT, 6 hours 41 minutes earlier.
Area forecast discussion, Jul 6, 2:15 PM MDT, 6 hours 41 minutes before
NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
215 PM MDT SAT JUL 6 2002
.SHORT TERM...BAND OF CONVECTION ACROSS SOUTHEAST ZONES ASSOCIATED
WITH THETA E AND CAPE GRADIENT WORKING ITS WAY INTO THE CWA FROM THE
SOUTH. ANTICIPATE SOME SHOWER AND THUNDERSTORM DEVELOPMENT TONIGHT
AS THE GRADIENT ROTATES FURTHER INTO THE CWA. TEMPERATURES ARE DOWN
TODAY BECAUSE EVAPORATION OF MOISTURE FROM RAINFALL THIS MORNING IS
USING AVAILABLE SOLAR ENERGY. OTHERWISE TEMPS WOULD BE 90+ MOST
AREAS.
NEXT SYSTEM BEGINS ITS APPROACH SUNDAY EVENING AS THE WARM SECTOR
MOVES IN. RUC METEOGRAMS SHOWING AN INCREASE IN INSTABILITY. COLD
FRONT ARRIVES MONDAY AFTERNOON PRECEDED BY STRONG WINDS AHEAD OF IT.
EXPECT THUNDERSTORMS TO SPREAD ACROSS THE REGION MONDAY AFTERNOON OR
EVENING AND POSSIBLY LINGER OVERNIGHT IN THE EASTERN ZONES. TUESDAY
WILL BE COOLER THAN EITHER SUNDAY OR MONDAY AS THE COOLER AIR MASS
SETTLES IN AND CLEARING TAKES PLACE.
.LONG TERM...SEVERAL WEAK SHORTWAVES ROTATING ACROSS THE TOP OF A
DIRTY UPPER RIDGE THROUGH THE EXTENDED PERIOD. A SURFACE HIGH
PUSHES INTO THE CWA FROM ALBERTA BRINGING SLIGHTLY LOWER HEIGHTS AND
POSSIBLY COOLER TEMPERATURES LATE SATURDAY. FLOW AROUND THE HIGH
WILL PUMP MOISTURE INTO THE REGION AGAIN...POSSIBLY FUELING ANOTHER
ROUND OF THUNDER OVER THE WEEKEND. MCNULTY
KGGW BBB 061/091 060/092 057/083 81524362
BBBB 059/087 061/088 060/086 059/090 8111111111
KGDV BBB 063/093 061/093 063/084 81533263
BBBB 059/089 060/087 063/089 060/089 8111111111
.GGW...NONE.The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 10:07 PM MDT | Severe Thunderstorm Warning | GGW | McCone | 53 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.