Alert archive / Montana / Flash Flood Warnings in 2002

Flash Flood Warning 9, NWS Missoula, MT

July 16, 2002Silver Bow County, Montana

NWS Missoula, MT issued this flash flood warning at Jul 16, 2002, 2:51 PM MDT for Silver Bow County, Montana. It was in force for 114 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 16, 2002, 2:51 PM MDT (20:51 UTC)
Expired
Jul 16, 2002, 4:45 PM MDT
In force
114 min
Issued by
NWS Missoula, MT
Area
Counties, with a storm outline in the text

County Silver Bow County, MT

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 8.9 hours before the alert went out and 228 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, Great_falls, MT at 12:00Z on 2002-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 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, Great_falls, MT at 12:00Z on 2002-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 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
8 J/kg
Mixed-layer CIN
-306 J/kg
Mixed-layer LCL
2222 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
-24 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 
WGUS55 KMSO 162051
FFWMSO
MTC093-162245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
247 PM MDT TUE JUL 16 2002

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL SILVER BOW COUNTY IN WEST CENTRAL MONTANA

* UNTIL 445 PM MDT

* AT 247 PM MDT...RADAR INDICATED A STORM WITH VERY HEAVY RAINFALL
  9 MILES SOUTH OF BUTTE OVER BASIN CREEK...WITH LITTLE MOVEMENT.    
  RADAR ESTIMATES OF RAINFALL ARE APPROACHING 2 INCHES PER HOUR WITH 
  THIS THUNDERSTORM.

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. IF YOU
ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS
LIVING ALONG RIVERS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO
PROTECT LIFE AND PROPERTY. DO NOT CROSS FLOODED ROADWAYS.

RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF RESIDENTIAL
AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS DITCHES AND LOW
LYING AREAS.

LAT...LON 4590 11266 4577 11247 4600 11245 4602 11257

Nearby

Flash Flood Warnings in Montana, 2002Every flash flood 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.