Alert archive / Montana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 44, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Aug 7, 1998, 12:15 AM MDT for Missoula County, Ravalli County, Montana. It was in force for 60 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 7, 1998, 12:15 AM MDT (06:15 UTC)
- Expired
- Aug 7, 1998, 1:15 AM MDT
- In force
- 60 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
Counties Missoula County, MT, Ravalli County, MT
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 6.3 hours before the alert went out and 220 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
- 3362 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
651 WUUS1 KMSO 070619 RRA SVRMSO MTC063-081-070715- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 1215 AM MDT FRI AUG 7 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN MISSOULA COUNTY IN WEST CENTRAL MONTANA NORTHERN RAVALLI COUNTY IN WEST CENTRAL MONTANA * UNTIL 115 AM MDT * AT 1210 AM MDT...SEVERE THUNDERSTORM INDICATED 8 MILES SOUTH- SOUTHEAST OF LOLO...BY NATIONAL WEATHER SERVICE DOPPLER RADAR... MOVING NORTHEAST AT 30 MPH. * SEVERE THUNDERSTORM WILL BE NEAR... MILLTOWN BY 1230 AM MDT DESTRUCTIVE HAIL...DAMAGING WINDS...DEADLY LIGHTNING...AND VERY HEAVY RAIN ARE ALL LIKELY WITH THIS STORM. FOR YOUR PROTECTION... MOVE INSIDE A STRONG BUILDING...AND STAY AWAY FROM WINDOWS. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. BELTZ
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 6, 8:30 PM MDT, 3 hours 45 minutes earlier.
Area forecast discussion, Aug 6, 8:30 PM MDT, 3 hours 45 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 830 PM MDT THU AUG 6 1998 HIGH BASED THUNDERSTORMS OVER SOUTHWEST MONTANA AND PORTIONS OF CENTRAL IDAHO THIS EVENING. WOULD EXPECT TSTMS TO DIE DOWN AFTER SUNSET...EXCEPT WATER VAPOR INDICATING A SHORT WAVE OVER THE OREGON- IDAHO BORDER REDEVELOPING TSTMS. WILL UPDATE FORECAST TO KEEP TSTMS OVERNIGHT FOR ALL IDAHO ZONES AND MONTANA ZONES 5 THROUGH 7. AIR MASS REMAINS UNSTABLE OVER THESE ZONES THROUGH FRIDAY...BUT FAIRLY DRY AT THE LOWER LEVELS THROUGH 24 HOURS FOR CONTINUING THREAT OF DRY LIGHTNING AND STRONG GUSTY WINDS. NORTHWEST MONTANA SHOULD CONTINUE TO HAVE DRY AND STABLE CONDITIONS THROUGH FRIDAY. PLAN ON UPDATE. HARMER ...FORECASTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE... LIB .. 050/083 049/080 ... 320100 FCA UU 048/086 046/083 048 320100 POL .. 054/082 052/080 ... 320110 MSO UU 054/088 052/086 052 321110 HMM .. 055/090 053/088 ... 322110 BTM .. 050/085 048/083 ... 322221 S80 .. 055/084 053/083 ... 321111 P69 .. 059/087 056/086 ... 321111 SMN .. 050/086 048/084 ... 322211
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:33 PM MDT | Severe Thunderstorm Warning | MSO | Deer Lodge | 47 min |
| Aug 7, 3:43 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 47 min |
| Aug 7, 4:31 PM MDT | Severe Thunderstorm Warning | MSO | Powell | 34 min |
Nearby
Severe Thunderstorm Warnings in Montana, 1998Every severe thunderstorm warning in 1998
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.