Alert archive / Idaho / Flash Flood Warnings in 2003

Flash Flood Warning 2, NWS Missoula, MT

July 26, 2003Idaho County, Idaho

NWS Missoula, MT issued this flash flood warning at Jul 26, 2003, 1:45 PM PDT for Idaho County, Idaho. It was in force for 3 hr. 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 26, 2003, 1:45 PM PDT (20:45 UTC)
Expired
Jul 26, 2003, 4:45 PM PDT
In force
3 hr
Issued by
NWS Missoula, MT
Area
Counties, with a storm outline in the text

County Idaho County, ID

The nearest sounding before it

Boise Airport, ID (KBOI), launched 12:00Z, 8.8 hours before the alert went out and 212 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, Boise Airport, ID at 12:00Z on 2003-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 283 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, Boise Airport, ID at 12:00Z on 2003-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -12 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
283 J/kg
Mixed-layer CIN
-178 J/kg
Mixed-layer LCL
1448 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-12 m²/s²
0-3 km storm-relative helicity
4 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 262048
FFWMSO
IDC049-262345-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
145 PM PDT SAT JUL 26 2003

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL IDAHO COUNTY IN CENTRAL IDAHO

* UNTIL 445 PM PDT(545 PM MDT)

* AT 145 PM PDT (245 PM MDT)...RADAR INDICATED A STORM WITH VERY     
  HEAVY RAINFALL IN EXCESS OF 1 INCH IN AN HOUR FROM 10 MILES        
  SOUTHWEST OF OROGRANDE TO 8 MILES SOUTHEAST OF OROGRANDE...OR FROM 
  28 MILES SOUTHEAST OF GRANGEVILLE TO 40 MILES SOUTHEAST            
  OF GRANGEVILLE...MOVING NORTHEAST AT 20 MPH.

* THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE...
  OVER OROGRANDE AT 155 PM PDT
  7 MILES SOUTHEAST OF GOLDEN AT 205 PM PDT
  6 MILES SOUTHEAST OF FALL CREEK AT 210 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.

LAT...LON 4522 11609 4522 11551 4576 11512 4582 11580

Nearby

Flash Flood Warnings in Idaho, 2003Every flash flood warning in 2003

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.