Alert archive / Washington / Flash Flood Warnings in 1998

Flash Flood Warning 3, NWS Spokane, WA

July 3, 1998Douglas County, Grant County, Washington

NWS Spokane, WA issued this flash flood warning at Jul 3, 1998, 4:48 PM PDT for Douglas County, Grant County, Washington. It was in force for 2 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
Jul 3, 1998, 4:48 PM PDT (23:48 UTC)
Expired
Jul 3, 1998, 6:50 PM PDT
In force
2 hr
Issued by
NWS Spokane, WA
Area
Whole counties

Counties Douglas County, WA, Grant County, WA

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.8 hours before the alert went out and 239 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 1998-07-03Temperature 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 1998-07-03The 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
963 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
-22 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 
TTAA00 KGEG 032348
FFWGEG
WAC017-025-040150-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
448 PM PDT FRI JUL 3 1998

THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN DOUGLAS COUNTY IN NORTH CENTRAL WASHINGTON
  NORTHWESTERN GRANT COUNTY IN CENTRAL WASHINGTON

* UNTIL 650 PM PDT

* AT 435... SPOTTERS INDICATED THUNDERSTORMS WITH VERY HEAVY RAIN
  ALONG THE BORDERS OF GRANT A6ND DOUGLAS COUNTIES... MOVING SLOWLY
  NORTH.

* LOWLAND FLOODING WILL OCCUR AS WELL AS FLASH FLOODING IN NORMALLY
  DRY CREEK BEDS AND LOW LYING ROADS.

MOVE TO HIGHER GROUND IF FLOOD WATERS THREATEN.

TC

The office that day

Everything else NWS Spokane, WA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 3:17 PM PDTTornado WarningOTXLincoln33 min
Jul 3, 3:36 PM PDTTornado WarningOTXLincoln34 min
Jul 3, 4:13 PM PDTSevere Thunderstorm WarningOTXDouglas, Grant47 min

Nearby

Flash Flood Warnings in Washington, 1998Every flash flood warning in 1998

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.