Alert archive / Washington / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 2, NWS Spokane, WA

June 28, 1992Stevens County, Washington

NWS Spokane, WA issued this severe thunderstorm warning at Jun 28, 1992, 6:35 PM PDT for Stevens County, Washington. It was in force for 85 min.

The area

The counties it named.

The facts

Issued
Jun 28, 1992, 6:35 PM PDT (01:35 UTC)
Expired
Jun 28, 1992, 8:00 PM PDT
In force
85 min
Issued by
NWS Spokane, WA
Area
Whole counties

County Stevens County, WA

The nearest sounding before it

Spokane Intl Airport, WA (KGEG), launched 00:00Z, 1.6 hours before the alert went out and 89 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 Intl Airport, WA at 00:00Z on 1992-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Spokane Intl Airport, WA at 00:00Z on 1992-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 96 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
2443 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
96 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGEG 290135
SVRGEG
WAC065-290200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
635 PM PDT SUN JUN 28 1992
 
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  700 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATION                        ...
 
IN NORTHEAST WASHINGTON
 
   ...NORTHERN STEVENS COUNTY
 
THUNDERSTORMS HAVE MOVED INTO NORTHERN HALF OF STEVENS COUNTY WITH
HEAVY RAIN...FREQUENT LIGHTNING AND STRONG WINDS. A WEATHER SPOTTER IN
COLVILLE REPORTED STRONG WINDS WITH HEAVY RAIN...40 HUNDRETHS IN 15
MINUTES. TREES HAVE BEEN BLOWN OVER IN FERRY COUNTY FROM THIS STORM.
 
THIS STORM IS MOVING NORTHWARD AT ABOUT 20 MPH.  PEOPLE NORTH OF
COLVILLE SHOULD TAKE COVER AS THIS STORM APPROACHES.
 
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS.  HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 5:39 PM PDTSevere Thunderstorm WarningOTXFerry66 min
Jun 28, 6:53 PM PDTSevere Thunderstorm WarningOTXFerry, Stevens67 min
Jun 28, 7:35 PM PDTSevere Thunderstorm WarningOTXColumbia100 min
Jun 28, 9:00 PM PDTSevere Thunderstorm WarningOTXAdams60 min

Nearby

Severe Thunderstorm Warnings in Washington, 1992Every severe thunderstorm warning in 1992

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.