Alert archive / Montana / Flash Flood Warnings in 2002

Flash Flood Warning 1, NWS Missoula, MT

June 22, 2002Missoula County, Montana; Idaho County, Idaho

NWS Missoula, MT issued this flash flood warning at Jun 22, 2002, 4:57 PM MDT for Missoula County, Montana; Idaho County, Idaho. 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
Jun 22, 2002, 4:57 PM MDT (22:57 UTC)
Expired
Jun 22, 2002, 6:00 PM MDT
In force
63 min
Issued by
NWS Missoula, MT
Area
Whole counties

Counties Idaho County, ID, Missoula County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.0 hours before the alert went out and 190 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 2002-06-22Temperature 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 2002-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 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
2359 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
33 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 222257
FFWMSO
IDC049-MTC063-230000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
356 PM PDT SAT JUN 22 2002

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN IDAHO COUNTY IN CENTRAL IDAHO
  SOUTHWESTERN MISSOULA COUNTY IN WEST CENTRAL MONTANA

* UNTIL 500 PM PDT(600 PM MDT)

* AT 356 PM PDT(456 PM MDT)...RADAR INDICATED THUNDERSTORMS WITH 
VERY HEAVY RAINFALL FROM 7 MILES SOUTH OF LOLO HOT SPRINGS TO 22 
MILES SOUTH OF POWELL...OR FROM 29 MILES SOUTHWEST OF MISSOULA TO 22 
MILES WEST OF HAMILTON...MOVING NORTH AT 5 MPH.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE...
  7 MILES EAST OF POWELL AT 500 PM PDT

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.

CAMPING SHOULD BE AVOIDED ALONG CREEKS OR STREAMS DURING THREATENING
RAINS. EVEN SMALL STREAMS CAN BE DEADLY TORRENTS OF WATER DURING A 
FLASH FLOOD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 6:19 PM MDTSevere Thunderstorm WarningMSOSilver Bow56 min

Nearby

Flash Flood Warnings in Montana, 2002Flash Flood Warnings in Idaho, 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.