Alert archive / Washington / Flash Flood Warnings in 2001

Flash Flood Warning 1, NWS Spokane, WA

March 12, 20015 counties in Washington

NWS Spokane, WA issued this flash flood warning at Mar 12, 2001, 10:35 AM PST for 5 counties in Washington. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Mar 12, 2001, 10:35 AM PST (18:35 UTC)
Expired
Mar 12, 2001, 2:30 PM PST
In force
4 hr
Issued by
NWS Spokane, WA
Area
Whole counties

Counties Chelan County, WA, Douglas County, WA, Ferry County, WA, Grant County, WA, Okanogan County, WA

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 6.6 hours before the alert went out and 241 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 2001-03-12Temperature 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 2001-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 203 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
1147 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
203 m²/s²
0-3 km storm-relative helicity
194 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 
WGUS56 KOTX 121839
FFWGEG
WAC007-017-019-025-047-122230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING...THIS IS A TEST!!!
NATIONAL WEATHER SERVICE SPOKANE WA
1035 AM PST MON MAR 12 2001

...THIS IS A TEST...THIS IS A TEST...THIS IS A TEST...
...NO FLOODING IS OCCURRING IN THE MENTIONED AREA...

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* FLASH FLOOD WARNING FOR A DAM FAILURE IN...
  GRANT COUNTY
  CHELAN COUNTY
  OKANOGAN COUNTY
  DOUGLAS COUNTY
  ...ALONG AND NEAR THE COLUMBIA RIVER 

* UNTIL 230 PM PST

GRAND COULEE DAM ON THE COLUMBIA RIVER HAS GIVEN WAY AND HIGH WATERS
ARE MOVING TOWARD ELMER CITY. AREAS DOWNSTREAM FROM GRAND COULEE DAM
SHOULD BE PREPARED FOR FLOODING. AREAS UPSTREAM FROM THE DAM SHOULD
BE PREPARED FOR A RAPID DRAW DOWN OF THE LAKE LEVEL. TAKE NECESSARY
PRECAUTIONS IMMEDIATELY.

PEOPLE BELOW THE DAM SHOULD TAKE IMMEDIATE ACTION BY MONITORING LOCAL
RADIO OR TELEVISION AND FOLLOWING INS(TRUCTIONS FOR ANY REQUIRED
EVACUATION AS OUTLINED BY LOCAL EMERGENCY OFFICIALS.

...THIS IS A TEST FOR THE GRAND COULEE DAM FUNCTIONAL EXERCISE...
...THIS IS ONLY A TEST...

Nearby

Flash Flood Warnings in Washington, 2001Every flash flood warning in 2001

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.