Alert archive / Montana / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 3, NWS Missoula, MT

May 15, 1994Flathead County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at May 15, 1994, 5:38 PM MDT for Flathead County, Montana. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
May 15, 1994, 5:38 PM MDT (23:38 UTC)
Expired
May 15, 1994, 6:45 PM MDT
In force
67 min
Issued by
NWS Missoula, MT
Area
Whole counties

County Flathead County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.6 hours before the alert went out and 187 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.

Skew-T log-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 1994-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 1994-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
924 m above ground
0-6 km bulk shear
66 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
409 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KFCA 160005
SVRFCA
MTC029-270515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KALISPELL MONTANA
538 PM MDT SUN MAY 15 1994

THE NATIONAL WEATHER SERVICE IN KALISPELL MONTANA ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWEST MONTANA

   ...FLATHEAD COUNTY

STRONG THUNDERSTORMS REPORTED EARLIER IN SANDERS COUNTY HAVE MOVED   
INTO FLATHEAD COUNTY. THE FLATHEAD SHERIFFS OFFICE REPORTS STRONG    
WINDS AND HEAVY RAIN WITH THESE STORMS. ALSO REPORTED ARE SOME
DOWNED POWER LINES.                                        

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.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55* MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AN 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 DON'T DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 15, 4:42 PM MDTSevere Thunderstorm WarningMSOSanders63 min
May 15, 5:07 PM MDTSevere Thunderstorm WarningMSOLake68 min

Nearby

Severe Thunderstorm Warnings in Montana, 1994Every severe thunderstorm warning in 1994

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.