Alert archive / Washington / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 12, NWS Pendleton, OR

July 9, 1995Columbia County, Washington

NWS Pendleton, OR issued this severe thunderstorm warning at Jul 9, 1995, 2:53 PM PDT for Columbia County, Washington. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jul 9, 1995, 2:53 PM PDT (21:53 UTC)
Expired
Jul 9, 1995, 4:00 PM PDT
In force
67 min
Issued by
NWS Pendleton, OR
Area
Whole counties

County Columbia County, WA

The nearest sounding before it

Spokane Intl Airport, WA (KGEG), launched 12:00Z, 9.9 hours before the alert went out and 151 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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

Special weather statement, Jul 9, 2:20 PM PDT, 33 minutes before
ORZ010-011-WAZ010-092315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PENDLETON OR
220 PM PDT SUN JUL 9 1995

...A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT FOR NORTHEAST OREGON
AND SOUTHEAST WASHINGTON UNTIL 6 PM...

A 2:20 PM...ANOTHER LINE OF THUNDERSTORMS WAS DEVELOPING IN EASTERN
UMATILLA...NORTHERN UNION...WESTERN WALLOWA AND SOUTHERN COLUMBIA
COUNTIES.  THESE STORMS ARE DEVELOPING RAPIDLY.

IF A THUNDERSTORM APPROACHES...SEEK SHELTER IN A STRONG BUILDING.
MONITOR FORECASTS CLOSELY BE PREPARED TO MOVE TO SAFETY IF A WARNING IS
ISSUED.

DOHERTY

The office that day

Everything else NWS Pendleton, OR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 9, 4:13 PM PDTSevere Thunderstorm WarningPDTUnion, Wallowa47 min
Jul 8, 5:31 PM PDTSevere Thunderstorm WarningPDTKlickitat119 min
Jul 8, 10:29 PM PDTSevere Thunderstorm WarningPDTKlickitat61 min

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.