Alert archive / Montana / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 38, NWS Missoula, MT
NWS Missoula, MT issued this severe thunderstorm warning at Jul 28, 1998, 1:52 PM MDT for Lake County, Missoula County, Montana. It was in force for 63 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 28, 1998, 1:52 PM MDT (19:52 UTC)
- Expired
- Jul 28, 1998, 2:55 PM MDT
- In force
- 63 min
- Issued by
- NWS Missoula, MT
- Area
- Whole counties
Counties Lake County, MT, Missoula County, MT
The radar
The Missoula radar (KMSX), 33 km from the middle of the area, began a volume at 19:54 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
Spokane, WA (KOTX), launched 12:00Z, 7.9 hours before the alert went out and 184 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
- 128 J/kg
- Mixed-layer CIN
- -346 J/kg
- Mixed-layer LCL
- 2575 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -21 m²/s²
- 0-3 km storm-relative helicity
- -10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
938 WUUS1 KMSO 282000 RRA SVRMSO MTC047-063-282055- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MISSOULA MT 152 PM MDT TUE JUL 28 1998 THE NATIONAL WEATHER SERVICE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN LAKE COUNTY IN WEST CENTRAL MONTANA NORTHEASTERN MISSOULA COUNTY IN WEST CENTRAL MONTANA * UNTIL 255 PM MDT * AT 155 PM MDT...SEVERE THUNDERSTORM INDICATED 10 MILES EAST OF ARLEE...BY NATIONAL WEATHER SERVICE DOPPLER RADAR...MOVING EAST AT 5 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 OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT 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 28, 9:05 AM MDT, 4 hours 47 minutes earlier.
Area forecast discussion, Jul 28, 9:05 AM MDT, 4 hours 47 minutes before
WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 905 AM MDT TUE JUL 28 1998 RIDGE APPEARS TO BE BREAKING DOWN A LITTLE AND A SUCCESSION OF MINOR SHORTWAVES ARE EJECTING TOWARD REGION FROM MAIN OFFSHORE LOW. MODELS ARE NOT HANDLING THESE AS WELL AS YESTERDAY BUT WATER VAPOR SHOWS THE ONE OF IMMEDIATE CONCERN TO BE NEAR THE ETA/AVN 5H LOCATION ACROSS WA TO SOUTHWEST ID. ANOTHER ONE TRAILING IN OR/NV IS NOT RECOGNIZED BY MODELS AND WILL HAVE TO BE LOOKED AT FOR ANOTHER ROUND OF STORMS TONIGHT. PLENTY OF MOISTURE AND INSTABILITY AVAILABLE IN ANY CASE. BELIEVE THE POPS ARE IF ANYTHING A LITTLE LOW BUT WILL LEAVE FOR NOW. TEMPS ARE TRICKY AND DEPENDENT ON CLOUD COVER. BELIEVE CURRENT MT ZONES ARE FINE...BUT LATE MORNING/EARLY AFTERNOON WILL SEE STRONG SUNSHINE IN WEST CENTRAL ID. PITTSBURG LANDING ALREADY 77 DEGREES AND WILL LIKELY TOP 100 AGAIN...STILL COOLER THAN MON. WILL PULL OUT ID ZONE 8 FOR UPDATE. GV ...FORECASTS BELOW ARE PRELIMINARY AND SUBJECT TO CHANGE... LIB .. 087/061 086/... ... 35553 FCA TE 086/060 085/056 083 35653 POL .. 086/064 085/... ... 35653 MSO TE 087/061 086/060 084 35654 HMM .. 089/064 088/... ... 35654> BTM .. 083/053 081/... ... 35664 S80 .. 092/063 088/... ... 35454 P69 .. 096/066 090/... ... 35534 SMN .. 089/060 088/... ... 35433
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 2:31 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 59 min |
| Jul 28, 3:26 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 59 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; radar from the NEXRAD Level II archive.