Alert archive / Washington / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 2, NWS Seattle, WA
NWS Seattle, WA issued this severe thunderstorm warning at May 20, 1994, 2:23 PM PDT for Douglas County, Washington. It was in force for 115 min.
The area
The counties it named.
The facts
- Issued
- May 20, 1994, 2:23 PM PDT (21:23 UTC)
- Expired
- May 20, 1994, 4:18 PM PDT
- In force
- 115 min
- Issued by
- NWS Seattle, WA
- Area
- Whole counties
County Douglas County, WA
The nearest sounding before it
Spokane Intl Airport, WA (KGEG), launched 12:00Z, 9.4 hours before the alert went out and 165 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.
- Mixed-layer CAPE
- 9 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 551 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- -17 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, May 20, 12:01 PM PDT, 2 hours 22 minutes before
WAZ009-202300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SEATTLE WA 1158 AM PDT FRI MAY 20 1994 ...HALF INCH DIAMETER HAIL WAS REPORTED BY A WEATHER SPOTTER ABOUT 75 MILES WEST OF SPOKANE SHORTLY BEFORE NOON... A WEATHER SPOTTER NEAR ELMIRA ALONG U.S. HIGHWAY 2, ABOUT 75 MILES WEST OF SPOKANE, REPORTED HALF INCH DIAMETER HALF AROUND 1145 AM THIS MORNING. SATELLITE PICTURES AND NATIONAL WEATHER SERVICE DOPPLER WEATHER RADAR ALSO SHOWED DEVELOPING THUNDERSTORMS IN PORTIONS OF NORTH CENTRAL WASHINGTON. THE THUNDERSTORMS ARE ASSOCIATED WITH COOL MOIST UNSTABLE AIR CIRCULATING AROUND AN UPPER LEVEL LOW PRESSURE SYSTEM OVER NORTHERN IDAHO. MORE THUNDERSTORMS, POSSIBLY WITH BRIEF HEAVY RAIN OR SMALL HAIL, ARE EXPECTED MAINLY IN THE NORTHERN AND EASTERN PARTS OF EASTERN WASHINGTON TODAY. IF YOU ARE TRAVELLING THROUGH THESE AREAS AND ENCOUNTER HEAVY RAIN, HAIL, OR POOR VISIBILITY, SLOW DOWN OR PULL OFF THE ROAD. DON'T DRI4VE THROUGH WASHES OR LOW SPOTS COVERED WITH WATER. IF YOU ARE OUTSIDE, SEEK SHELTER IF YOU SEE A THUNDERSTORM APPROACH. BUEHNER
Special weather statement, May 20, 2:04 PM PDT, 19 minutes before
WAZ007-009-210230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SEATTLE WA 200 PM PDT FRI MAY 20 1994 ...HALF INCH DIAMETER HAIL WAS REPORTED BY A WEATHER SPOTTER ABOUT 10 MILES NORTH OF EPHRATA AROUND 145 PM... A WEATHER SPOTTER NEAR LAKE LENORE ALONG STATE HIGHWAY 17, ABOUT 10 MILES NORTH OF EPHRATA, REPORTED HALF INCH DIAMETER HALF AS WELL AS HEAVY RAIN AROUND 145 PM THIS AFTERNOON. SATELLITE PICTURES AND WEATHER RADAR ALSO SHOWED SEVERAL THUNDERSTORMS IN PORTIONS OF NORTH CENTRAL WASHINGTON. THE THUNDERSTORMS ARE ASSOCIATED WITH COOL MOIST UNSTABLE AIR CIRCULATING AROUND AN UPPER LEVEL LOW PRESSURE SYSTEM OVER NORTHERN IDAHO. MORE THUNDERSTORMS, POSSIBLY WITH BRIEF HEAVY RAIN OR SMALL HAIL, ARE EXPECTED MAINLY IN THE NORTHERN AND EASTERN PARTS OF EASTERN WASHINGTON INTO THIS EVENING. IF YOU ARE TRAVELLING THROUGH THESE AREAS AND ENCOUNTER HEAVY RAIN, HAIL, OR POOR VISIBILITY, SLOW DOWN OR PULL OFF THE ROAD. DON'T xDRIVE THROUGH WASHES OR LOW SPOTS COVERED WITH WATER. IF YOU ARE OUTSIDE, SEEK SHELTER IF YOU SEE A THUNDERSTORM APPROACH. BUEHNER
Special weather statement, May 20, 2:05 PM PDT, 18 minutes before
WAZ007-009-210230- SPECIAL WEATHER STATEMENT...CORRECTION 1ST PARAGRAPH NATIONAL WEATHER SERVICE SEATTLE WA 200 PM PDT FRI MAY 20 1994 ...HALF INCH DIAMETER HAIL WAS REPORTED BY A WEATHER SPOTTER ABOUT 10 MILES NORTH OF EPHRATA AROUND 145 PM... A WEATHER SPOTTER NEAR LAKE LENORE ALONG STATE HIGHWAY 17, ABOUT 10 MILES NORTH OF EPHRATA, REPORTED HALF INCH DIAMETER HAIL AS WELL AS HEAVY RAIN AROUND 145 PM THIS AFTERNOON. SATELLITE PICTURES AND WEATHER RADAR ALSO SHOWED SEVERAL THUNDERSTORMS IN PORTIONS OF NORTH CENTRAL WASHINGTON. THE THUNDERSTORMS ARE ASSOCIATED WITH COOL MOIST UNSTABLE AIR CIRCULATING AROUND AN UPPER LEVEL LOW PRESSURE SYSTEM OVER NORTHERN IDAHO. MORE THUNDERSTORMS, POSSIBLY WITH BRIEF HEAVY RAIN OR SMALL HAIL, ARE EXPECTED MAINLY IN THE NORTHERN AND EASTERN PARTS OF EASTERN WASHINGTON INTO THIS EVENING. IF YOU ARE TRAVELLING THROUGH THESE AREAS AND ENCOUNTER HEAVY RAIN, HAIL, OR POOR VISIBILITY, SLOW DOW~N OR PULL OFF THE ROAD. DON'T DRIVE THROUGH WASHES OR LOW SPOTS COVERED WITH WATER. IF YOU ARE OUTSIDE, SEEK SHELTER IF YOU SEE A THUNDERSTORM APPROACH. BUEHNER
Nearby
Severe Thunderstorm Warnings in Washington, 1994Every severe thunderstorm warning in 1994
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.