Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 26, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jul 23, 1997, 5:55 PM MDT for Beaverhead County, Montana. It was in force for 65 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 23, 1997, 5:55 PM MDT (23:55 UTC)
- Expired
- Jul 23, 1997, 7:00 PM MDT
- In force
- 65 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
County Beaverhead County, MT
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 11.9 hours before the alert went out and 313 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
- 2381 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMSO 232358 RRA SVRMSO MTC001-240100- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 555 PM MDT WED JUL 23 1997 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHWEST MONTANA ...SOUTHEASTERN BEAVERHEAD COUNTY AT 550 PM MDT RADAR INDICATED A SEVERE THUNDERSTORM MOVING FROM SOUTHEAST IDAHO INTO THE SOUTHEAST CORNER OF BEAVERHEAD COUNTY. THIS STORM IS MOVING TO THE NORTHEAST AT 15 MPH AND WILL PASS JUST WEST OF THE COMMUNITY OF LAKEVIEW AND THE RED ROCK LAKES AREA AROUND 615 PM MDT. THIS STORM MAY CONTAIN LARGE HAIL...HEAVY RAIN SHOWERS...AND WIND GUSTS IN EXCESS OF 50 MPH. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME xOR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. WHITMORE
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 Missoula, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 2:02 PM MDT, 3 hours 53 minutes earlier.
Area forecast discussion, Jul 23, 2:02 PM MDT, 3 hours 53 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 145 PM MDT WED JUL 23 1997 THURSDAY... MAIN PICTURE STABLE AND DRY EXCEPT FOR SOUTHWEST MONTANA/SOUTHERN LEMHI COUNTY THRU FRIDAY WHERE ISOLATE TSTMS POSSIBLE. TEMPS WILL GO CLOSE TO PERSISTENCE WITH MAIN COOLING FRIDAY. AFTERNOON WEST WINDS MIXING DOWN TO CONTINUE MENTION OF UP TO 15 MPH. FRIDAY... CLOSED LOW OVER NORTHERN ALBERTA CANADA TO SLOWLY DROP SOUTH BY 60 HOURS WITH 60 METER HEIGHT FALLS. WEAK S/WV TO BRUSH MAINLY NORTHWEST MONTANA WITH A HINT OF A WEAK SFC TROUGH TO MOVE ACROSS CWA. WEST WINDS DURING THE AFTERNOON. TEMPS..3 TO 5 DEGREE COOLING WILL DEPEND UPON EXTENT OF CLOUD COVER...MAINLY PARTLY CLOUDY SKIES MISSOULA NORTH AND NORTHERN IDAHO PANHANDLE. AFTERNOON ISOLATED SHOWERS OR THUNDERSTORMS. TC ...FORECASTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE... LIB .. 048/086 048/080 ... 290001 FCA UB 044/079 044/075 043 290001 POL .. 050/084 050/080 ... 290001 MSO UB 048/086 046/081 046 29000- HMM .. 046/090 046/085 ... 29000- BTM .. 047/085 044/079 ... 290001 S80 .. 051/083 050/080 ... 29000- P69 .. 056/086 055/084 ... 29000- SMN .. 053/089 052/087 ... 290001
Nearby
Severe Thunderstorm Warnings in Montana, 1997Every severe thunderstorm warning in 1997
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.