Alert archive / Idaho / Tornado Warnings in 2002

Tornado Warning 1, NWS Pocatello, ID

June 1, 2002Fremont County, Jefferson County, Madison County, Idaho

NWS Pocatello, ID issued this tornado warning at Jun 1, 2002, 4:09 PM MDT for Fremont County, Jefferson County, Madison County, Idaho. It was in force for 36 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
Jun 1, 2002, 4:09 PM MDT (22:09 UTC)
Expired
Jun 1, 2002, 4:45 PM MDT
In force
36 min
Issued by
NWS Pocatello, ID
Area
Counties, with a storm outline in the text

Counties Fremont County, ID, Jefferson County, ID, Madison County, ID

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 1, 4:00 PM MDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Riverton, WY (KRIW), launched 12:00Z, 10.2 hours before the alert went out and 307 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, Riverton, WY at 12:00Z on 2002-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 71 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Riverton, WY at 12:00Z on 2002-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 144 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
71 J/kg
Mixed-layer CIN
-503 J/kg
Mixed-layer LCL
1994 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
144 m²/s²
0-3 km storm-relative helicity
247 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.

159 
WFUS55 KPIH 012209
TORPIH
IDC043-051-065-012245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE POCATELLO/IDAHO FALLS ID
409 PM MDT SAT JUN 1 2002

THE NATIONAL WEATHER SERVICE IN POCATELLO/IDAHO FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN JEFFERSON COUNTY IN SOUTHEAST IDAHO

* UNTIL 445 PM MDT

* AT 407 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER ROBERTS...OR ABOUT 11 MILES NORTHWEST OF RIGBY...     
  MOVING NORTHEAST AT 30 MPH.  THE TORNADO WAS REPORTED ON THE       
  GROUND IN THE CITY OF ROBERTS

* THE TORNADO IS EXPECTED TO BE NEAR...
  7 MILES WEST OF PARKER AT 445 PM MDT

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT 
SATURDAY EVENING FOR SOUTHEAST IDAHO.

LAT...LON 4373 11227 4363 11206 4398 11171 4411 11197

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 6:14 PM MDTSevere Thunderstorm WarningPIHClark31 min

Nearby

Tornado Warnings in Idaho, 2002Every tornado warning in 2002Tornadoes in 2002

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.