Alert archive / Idaho / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 4, NWS Missoula, MT

May 24, 2003Clearwater County, Idaho

NWS Missoula, MT issued this severe thunderstorm warning at May 24, 2003, 8:25 PM PDT for Clearwater County, Idaho. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 24, 2003, 8:25 PM PDT (03:25 UTC)
Expired
May 24, 2003, 9:30 PM PDT
In force
65 min
Issued by
NWS Missoula, MT
Area
Counties, with a storm outline in the text

County Clearwater County, ID

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 3.4 hours before the alert went out and 144 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 2003-05-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 492 joules per kilogram.LCLLFCEL10008507005003002001001 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 2003-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 114 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
492 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
2814 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
114 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KMSO 250325
SVRMSO
IDC035-250430-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
825 PM PDT SAT MAY 24 2003

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN CLEARWATER COUNTY IN NORTH CENTRAL IDAHO

* UNTIL 930 PM PDT

* AT 825 PM PDT...RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES
  SOUTHWEST OF WEIPPE...OR 16 MILES SOUTHEAST OF OROFINO...MOVING
  NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  3 MILES NORTHWEST OF WEIPPE AT 830 PM PDT
  5 MILES NORTHWEST OF PIERCE AT 900 PM PDT
  OVER HEADQUARTERS AT 925 PM PDT

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS IN EXCESS OF 55 
MPH. LARGE HAIL IS ALSO POSSIBLE...ALONG WITH FREQUENT LIGHTNING AND 
BRIEF RAIN. FOR YOUR PROTECTION...GO INDOORS AND STAY AWAY FROM 
WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA.


LAT...LON 4629 11589 4630 11599 4636 11607 4636 11614
          4641 11620 4647 11634 4676 11618 4669 11561
          4642 11570

The office that day

Everything else NWS Missoula, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 24, 7:33 PM PDTSevere Thunderstorm WarningMSOIdaho42 min

Nearby

Severe Thunderstorm Warnings in Idaho, 2003Every severe thunderstorm warning in 2003

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.