Alert archive / Montana / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 1, NWS Missoula, MT

May 19, 2002Missoula County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at May 19, 2002, 5:11 PM MDT for Missoula County, Montana. It was in force for 19 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
May 19, 2002, 5:11 PM MDT (23:11 UTC)
Expired
May 19, 2002, 5:30 PM MDT
In force
19 min
Issued by
NWS Missoula, MT
Area
Whole counties

County Missoula County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.2 hours before the alert went out and 201 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 2002-05-19Temperature 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 2002-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.19395878Sfc1 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
1025 m above ground
0-6 km bulk shear
77 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
233 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 
WUUS55 KMSO 192311
SVRMSO
MTC063-192330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
509 PM MDT SUN MAY 19 2002

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MISSOULA COUNTY IN WEST CENTRAL MONTANA

* UNTIL 530 PM MDT

* AT 509 PM MDT...SPOTTERS REPORTED A SEVERE THUNDERSTORM OVER       
  SOUTH MISSOULA...MOVING NORTH AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL MOVE OVER MISSOULA AND THE EVARO AREA 
  THROUGH 530 PM MDT.

DAMAGING WINDS IN EXCESS OF 55 MPH ARE LIKELY WITH THIS SEVERE 
THUNDERSTORM. PEA SIZED HAIL IS POSSIBLE...ALONG WITH FREQUENT LIGHTNING 
AND HEAVY RAIN. FOR YOUR PROTECTION...GO INDOORS AND STAY AWAY FROM 
WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA.

Nearby

Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002

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.