Alert archive / Washington / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 2, NWS Seattle, WA

June 28, 1992Kittitas County, Washington

NWS Seattle, WA issued this severe thunderstorm warning at Jun 28, 1992, 10:10 PM PDT for Kittitas County, Washington. It was in force for 50 min.

The area

The counties it named.

The facts

Issued: Jun 28, 1992, 10:10 PM PDT (05:10 UTC)
Expired: Jun 28, 1992, 11:00 PM PDT
In force: 50 min
Issued by: NWS Seattle, WA
Area: Whole counties

County Kittitas County, WA

The nearest sounding before it

Spokane Intl Airport, WA (KGEG), launched 00:00Z, 5.2 hours before the alert went out and 246 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 KSEA 290519 COR
SVRSEA
WAC007-017-037-290615-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED TOWNS IN WARNING AREA...
NATIONAL WEATHER SERVICE SEATTLE WA
1010 PM PDT SUN JUN 28 1992
 
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL WASHINGTON
 
   ...EASTERN CHELAN COUNTY...WESTERN DOUGLAS COUNTY
   ...EASTERN KITTITAS COUNTY
 
THE WARNING AREA INCLUDES THE TOWNS OF WENATCHEE...VANTAGE...AND
KITTITAS. INTERSTATE 90 BETWEEN VANTAGE AND KITTITAS IS IN THE
WARNING AREA.
 
AT 10 PM...RADAR AND SATELLITE PHOTOS SHOWED A POSSIBLE SEVERE
THUNDERSTORM MOVING NORTH INTO EASTERN CHELAN...WESTERN DOUGLAS...AND
EASTERN KITTITAS COUNTIES. THE STORM WAS MOVING NORTH ABOUT 25 MILES
AN HOUR.
 
EARLIER THIS EVENING...THIS STORM PRODUCED WIND GUSTS TO 60 MILES AN
HOUR OVER PARTS OF SOUTH CENTRAL WASHINGTON.
 
SEVEfRE THUNDERSTORMS PRODUCE WINDS OVER 55 MILES AN HOUR.  WHEN
THUNDERSTORMS ARE OCCURRING...DO NOT STAND BY WINDOWS.  DON'T USE
TELEPHONES OR ELECTRICAL APPLIANCES EXCEPT FOR AN EMERGENCY UNTIL
THE STORM HAS PASSED.
 
DOHERTY

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jun 28, 6:20 PM PDT, 3 hours 50 minutes before

LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
620 PM PDT SUN JUN 29 1992

TIME         EVENT

320 PM       SPOTTER AT CHELAN ALONG LAKE CHELAN REPORTED ONE-EIGHTH
             INCH HAIL AND GUSTY WINDS FROM A THUNDERSTORM.

345 PM       THUNDERSTORM DUMPED 0.22 INCHES OF RAIN IN 15 MINUTES AND
             SMALL HAIL AT MALOTT...SOUTHWEST OF OMAK...REPORTED BY A
             SPOTTER.

430 PM       SPOTTER AT MALOTT REPORTED SECOND THUNDERSTORM DUMPED
             ANOTHER 0.28 INCHES OF RAIN WITHIN HALF AN HOUR.  ALSO...
             UNOFFICIAL REPORT OF 1.25 INCHES OF RAIN IN 15 MINUTES
             5 TO 10 MILES WEST OF MALOTT.

430 PM       SPOTTER A FEW MILES NORTH OF TONASKET...NORTH OF OMAK...
             REPORTED ESTIMATED WINDS OF 45 TO 50 MPH...AND FREQUENT
             LIGHTNING.  HEARD REPORTS OF DOWNED TREES IN THE AREA ON
             HIS POLICE SCANNER.

BETWEEN      SPOTTER AT LOOMIS...SOUTHWEST OF OROVILLE...REPORTED
430 AND      THUNDERSTORM WINDS THAT SNAPPED OFF LARGE SPRUCE TREES AND
5 PM         UPROOTED SMALLER TREES.

DOHERTY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 10:10 PM PDT	Severe Thunderstorm Warning	SEW	Chelan, Douglas	65 min
Jun 28, 11:22 PM PDT	Severe Thunderstorm Warning	SEW	Chelan, Douglas, Okanogan	68 min

Nearby

Severe Thunderstorm Warnings in Washington, 1992 Every 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.