Alert archive / Idaho / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 2, NWS Spokane, WA

May 28, 1993Bonner County, Kootenai County, Shoshone County, Idaho

NWS Spokane, WA issued this severe thunderstorm warning at May 28, 1993, 5:18 PM PDT for Bonner County, Kootenai County, Shoshone County, Idaho. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
May 28, 1993, 5:18 PM PDT (00:18 UTC)
Expired
May 28, 1993, 6:15 PM PDT
In force
57 min
Issued by
NWS Spokane, WA
Area
Whole counties

Counties Bonner County, ID, Kootenai County, ID, Shoshone County, ID

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 0.3 hours before the alert went out and 8 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 00:00Z on 1993-05-29Temperature 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 00:00Z on 1993-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -23 square meters per square second.19395878Sfc1 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
1728 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
-23 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KGEG 290017 RRA
SVRGEG
IDC017-055-079-290115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPOKANE WA
518 PM PDT FRI MAY 28 1993
 
THE NATIONAL WEATHER SERVICE IN SPOKANE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM PDT
FOR PEOPLE IN THE FOLLOWING LOCATION                        S...
 
IN NORTH IDAHO
 
   ...BONNER COUNTY...KOOTENAI COUNTY...NORTHERN SHOSHONE COUNTY
 
THUNDERSTORMS ARE DEVELOPING RAPIDLY ACROSS NORTHERN IDAHO. STRONG
WINDS...FREQUENT LIGHTNING...AND BRIEF HEAVY RAIN HAVE BEEN REPORTED
AROUND LEWISTON AND GRANGEVILLE. THESE STORMS ARE MOVING NORTHWARD.
THESE STORMS ARE DANGEROUS...TAKE COVER IF OUTSIDE.
 
 
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.
 
 
FRISBIE

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 6:30 PM PDTSevere Thunderstorm WarningOTXBonner, Boundary60 min

Nearby

Severe Thunderstorm Warnings in Idaho, 1993Every severe thunderstorm warning in 1993

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.