Alert archive / Montana / Flash Flood Warnings in 2002

Flash Flood Warning 7, NWS Missoula, MT

July 7, 2002Ravalli County, Montana

NWS Missoula, MT issued this flash flood warning at Jul 7, 2002, 4:23 PM MDT for Ravalli County, Montana. It was in force for 107 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 7, 2002, 4:23 PM MDT (22:23 UTC)
Expired
Jul 7, 2002, 6:10 PM MDT
In force
107 min
Issued by
NWS Missoula, MT
Area
Counties, with a storm outline in the text

County Ravalli County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 10.4 hours before the alert went out and 250 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 2002-07-07Temperature 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 2002-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.193958Sfc1 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
2825 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
81 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 072223 CCA
FFWMSO
MTC081-080010-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTION
NATIONAL WEATHER SERVICE MISSOULA MT
410 PM MDT SUN JUL 7 2002

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* FLASH FLOOD WARNING FOR DICKSON CREEK...NORTH FORK RYE CREEK AND   
  THE SKALKAHO CREEK...
  CENTRAL RAVALLI COUNTY IN WEST CENTRAL MONTANA

* UNTIL 610 PM MDT

* AT 406 PM MDT...RADAR INDICATED STORMS WITH VERY HEAVY RAINFALL    
  OVER THE NORTHERN BITTERROOT BURNED AREAS BETWEEN HAMILTON AND     
  CONNER. THESE STORMS WERE MOVING NORTHEAST AT 20 MPH. SPOTTER      
  REPORTS OF UP TO A HALF INCH IN 20 MINUTES HAS BEEN REPORTED NEAR  
  CONNER. THIS HEAVY RAINFALL WILL LIKELY CAUSE LOCALIZED FLOODING   
  IN THE DRAINAGES OF DICKSON...NORTH FORK RYE AND SKALKAHO CREEKS.

A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR OCCURRING. 
RESIDENTS LIVING ALONG RIVERS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT CROSS FLOODED 
ROADWAYS.

LAT...LON 4586 11436 4582 11410 4595 11396 4615 11381
          4637 11416 4638 11438

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 4:11 PM MDTFlash Flood WarningMSORavalli119 min

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.