Alert archive / Idaho / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS Spokane, WA

May 23, 1990Bonner County, Boundary County, Idaho; Pend Oreille County, Washington

NWS Spokane, WA issued this severe thunderstorm warning at May 23, 1990, 4:07 PM PDT for Bonner County, Boundary County, Idaho; Pend Oreille County, Washington. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
May 23, 1990, 4:07 PM PDT (23:07 UTC)
Expired
May 23, 1990, 5:15 PM PDT
In force
68 min
Issued by
NWS Spokane, WA
Area
Whole counties

Counties Bonner County, ID, Boundary County, ID, Pend Oreille County, WA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 11.1 hours before the alert went out and 97 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, WA at 12:00Z on 1990-05-23Temperature 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, WA at 12:00Z on 1990-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
3585 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
70 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 KGEG 232307
SVRGEG
IDC017-021-055-079-WAC051-240015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
407 PM PDT WED MAY 23 1990
 
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM PDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTH IDAHO
          ...BONNER...BOUNDARY...NORTHERN KOOTENAI
          ...NORTHERN SHOSHONE
IN NORTHEAST WASHINGTON
          ...EASTERN PEND OREILLE
 
THE LATEST RADAR AND SATELLITE INFORMATION SHOW ALARGE DEVELOPING AREA
OF THUNDERSTORMS MOVING THROUGH THE IDAHO PANHANDLE AND THE EXTREME
NORTHEAST PART OF WASHINGTON. MARBLE SIZE HAIL WAS REPORTED IN THE
NEWPORT WASHINGTON. THE STORMS ARE CURRENTLY MOVING TO THE NORTHEAST
AT 25 MPH.
 
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVEB 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.

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 23, 2:04 PM PDT, 2 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
157 PM PDT WED MAY 23 1990
WAZ06-IDZ09-240000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPOKANE, WA
200 PM PDT WED MAY 23 1990

    SATELLITE INFORMATION AND THE LATEST RADAR OBSERVATIONS SHOW AN AREA
OF THUNDERSTORMS MOVING INTO THE IDAHO PANHANDLE.  KOOTENAI...SHOSHONE
AND BENEWAH COUNTIES IN THE IDAHO PANHANDLE CAN EXPECT HEAVY RAIN AND
STRONG GUSTY WINDS IN THE VICINITY OF THE THUNDERSTORMS...UNTIL 500 PM.

    FURTHER STATEMENTS WILL BE ISSUED AS CONDITIONS WARRANT OR
INFORMATION BECOMES AVAILABLE.

END/SAVOY

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 3:16 PM PDTSevere Thunderstorm WarningOTXBenewah, Kootenai, Shoshone59 min
May 23, 4:07 PM PDTSevere Thunderstorm WarningOTXKootenai, Shoshone68 min

Nearby

Severe Thunderstorm Warnings in Idaho, 1990Severe Thunderstorm Warnings in Washington, 1990Every severe thunderstorm warning in 1990

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.