Alert archive / Montana / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 54, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Aug 15, 1997, 3:57 PM MDT for Lake County, Sanders County, Montana. It was in force for 48 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
- Aug 15, 1997, 3:57 PM MDT (21:57 UTC)
- Expired
- Aug 15, 1997, 4:45 PM MDT
- In force
- 48 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
Counties Lake County, MT, Sanders County, MT
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 10.0 hours before the alert went out and 134 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
- 2991 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- -88 m²/s²
- 0-3 km storm-relative helicity
- 64 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 152203 RRA SVRMSO MTC047-089-152245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 357 PM MDT FRI AUG 15 1997 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 445 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN WEST CENTRAL MONTANA ...EXTREME WESTERN LAKE COUNTY...NORTHEASTERN SANDERS COUNTY AT 355 PM MDT MISSOULA RADAR INDICATED A SEVERE THUNDERSTORM NEAR NIARADA AT THE NORTHEAST CORNER OF SANDERS COUNTY. LARGE HAIL AND STRONG WIND IS EXPECTED AS THIS STORM MOVES SOUTH AT 15 MPH. IT WILL BE NEAR THE TOWN OF LONE PINE AT 415 PM MDT. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. GV
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 Aug 15, 1:49 PM MDT, 2 hours 8 minutes earlier.
Area forecast discussion, Aug 15, 1:49 PM MDT, 2 hours 8 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 145 PM MDT FRI AUG 15 1997 SHORTWAVE OVER WA/ID PANHANDLE/NRN MT IS NOT MOVING SOUTH AS FAST AS ETA INDICATES AND HAS A MORE E-W ORIENTATION. SHOWERS DEVELOPING OVER NW MT AS LEADING EDGE OF MOISTURE FIELD FINALLY MAKES ITS WAY TO CANADIAN BORDER. TIME HEIGHT CROSS SECTIONS CLEARLY SHOW MOISTURE LAGGING BEHIND OMEGA WITH MAX OMEGA DURING DAY TODAY AND MAX MOISTURE BETWEEN 06-18Z TNGT/SAT. CROSS SECTIONS ALSO SHOW SUBSIDENCE OVER MOST OF CWA TONIGHT/SAT WITH NEXT GOOD SHOT OF OMEGA AFTER OOZ SUN. SECOND WAVE COMES THROUGH NW SAT NIGHT SO HIGHER POPS LIB/FCA THEN. BEST MOISTURE STAYS EAST OF DIVIDE AND ETA QPF ALSO SUPPORTS BEST PRECIP CHANCES. THIS ALSO SUPPORTED BY ETA FOUS WITH ONLY .001 PRECIP IN 24 HOURS AT MSO. TEMPS A LITTLE COOLER TONIGHT BUT LATEST MODELS NOT INDICATING AS MUCH COOLING AS EARLIER THINKING. SUNDAY A LITTLE WARMER AND DRYER WITH WEAK SHORTWAVE RIDGING. HOADLEY ...FORECASTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE... LIB .. 052/071 055/074 ... 404353 FCA EE 049/070 052/073 049 404353 POL .. 054/069 056/071 ... 404353 MSO EE 051/072 053/075 051 404353 HMM .. 048/073 051/077 ... 404443 BTM .. 045/070 045/073 ... 403443 S80 .. 051/074 054/077 ... 403333 P69 .. 054/077 057/080 ... 403333 SMN .. 048/071 051/075 ... 403333
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.