Alert archive / Washington / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 2, NWS Seattle, WA

July 9, 1995Okanogan County, Washington

NWS Seattle, WA issued this severe thunderstorm warning at Jul 9, 1995, 2:30 PM PDT for Okanogan County, Washington. It was in force for 60 min.

The area

The counties it named.

The facts

Issued
Jul 9, 1995, 2:30 PM PDT (21:30 UTC)
Expired
Jul 9, 1995, 3:30 PM PDT
In force
60 min
Issued by
NWS Seattle, WA
Area
Whole counties

County Okanogan County, WA

The nearest sounding before it

Spokane Intl Airport, WA (KGEG), launched 12:00Z, 9.5 hours before the alert went out and 195 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 12:00Z on 1995-07-09Temperature 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 Intl Airport, WA at 12:00Z on 1995-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 137 square meters per square second.1939587897Sfc1 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
1252 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
137 m²/s²
0-3 km storm-relative helicity
281 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 KSEA 092139
SVRSEA
WAC047-092230-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SEATTLE WA
230 PM PDT SUN JUL 9 1995
 
THE NATIONAL WEATHER SERVICE IN SEATTLE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  330 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL WASHINGTON
 
   ...SOUTH CENTRAL OKANOGAN COUNTY
 
DOPPLER WEATHER RADAR AND A WEATHER SPOTTER JUST EAST OF BREWSTER
INDICATE THAT A SEVERE THUNDERSTORM IS MOVING NORTH THROUGH SOUTHERN
OKANOGAN COUNTY.  THIS STORM IS PRODUCING INCH AND A HALF HAIL...FREQUENLIGHTNING...AND STRONG WINDS.  THE CURRENT PATH OF THIS STORM WILL TAKE 
OTOWNS OF OKANOGAN AND OMAK WITHIN THE NEXT HALF HOUR.
 
THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
 
MCDONNAL

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, Jul 9, 2:08 PM PDT, 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
205 PM PDT SUN JUL 09 1995

TIME(PDT)    CITY LOCATION      EVENT/REMARKS
             COUNTY/SPOTTER

205 PM       NEAR LODI          0SPOTTER REPORTED A THUNDERSTORM WITH
                                HEAVY RAIN, WINDS TO 30 MPH, AND PEA-
                                SIZED HAIL.

             OKANOGAN 2H

SCHOWENGERDT
Local storm report, Jul 9, 2:15 PM PDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
215 PM PDT SUN JUL 09 1995

TIME(PDT)    CITY LOCATION      EVENT/REMARKS
             COUNTY/SPOTTER

215 PM       NEAR LODI          SPOTTER REPORTED .50 RAIN LAST 20
                                MINUTES. STORM MOVING NORTH.

             OKANOGAN 9

SCHOWENGERDT
Local storm report, Jul 9, 2:20 PM PDT, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
215 PM PDT SUN JUL 09 1995

TIME(PDT)    CITY LOCATION      EVENT/REMARKS
             COUNTY/SPOTTER

215 PM       NEAR LODI          hSPOTTER REPORTED .50 RAIN LAST 20
                                MINUTES. STORM MOVING NORTH.

             OKANOGAN 9

SCHOWENGERDT
Local storm report, Jul 9, 2:25 PM PDT, 5 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
225 PM PDT SUN JUL 09 1995

TIME(PDT)    CITY LOCATION      EVENT/REMARKS
             COUNTY/SPOTTER

225 PM       NEAR OLYMPIA       SPOTTER REPORTED 1.25 INCHES RAIN
                                SINCE 10AM.

             THURSTON 261

TREICK

TREICK
Local storm report, Jul 9, 2:26 PM PDT, 4 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
215 PM PDT SUN JUL 09 1995

TIME(PDT)    CITY LOCATION      EVENT/REMARKS
             COUNTY/SPOTTER

215 PM       NEAR OMAK      ~    SPOTTER REPORTED .50 RAIN LAST 20
                                MINUTES. STORM MOVING NORTH.

             OKANOGAN 9

TREICK
Local storm report, Jul 9, 2:27 PM PDT, 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SEATTLE WA
225 PM PDT SUN JUL 09 1995

TIME(PDT)    CITY LOCATION      EVENT/REMARKS
             COUNTY/SPOTTER

225 PM       NEAR OLYMPIA       SPOTTER REPORTED 1.25 INCHES RAIN
                                SINCE 10AM.

             THURSTON 261

TREICK

Nearby

Severe Thunderstorm Warnings in Washington, 1995Every severe thunderstorm warning in 1995

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.