Alert archive / Montana / Tornado Warnings in 2002

Tornado Warning 2, NWS Glasgow, MT

July 8, 2002Garfield County, Montana

NWS Glasgow, MT issued this tornado warning at Jul 8, 2002, 5:44 PM MDT for Garfield County, Montana. It was in force for 61 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
Jul 8, 2002, 5:44 PM MDT (23:44 UTC)
Expired
Jul 8, 2002, 6:45 PM MDT
In force
61 min
Issued by
NWS Glasgow, MT
Area
Counties, with a storm outline in the text

County Garfield County, MT

The radar

The Glasgow radar (KGGW), 124 km from the middle of the area, began a volume at 23:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

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

IssuedProductOfficeLasted
Jul 8, 1:00 PM MDTSevere Thunderstorm WatchSPC6 hr
Jul 8, 4:45 PM MDTTornado WatchSPC5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 11.7 hours before the alert went out and 126 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, Glasgow Intl Airport, MT at 12:00Z on 2002-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 214 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, Glasgow Intl Airport, MT at 12:00Z on 2002-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 119 square meters per square second.1939Sfc1 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
214 J/kg
Mixed-layer CIN
-246 J/kg
Mixed-layer LCL
1201 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
119 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

685 
WFUS55 KGGW 082344
TORGGW
MTC033-090045-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
544 PM MDT MON JUL 8 2002

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN GARFIELD COUNTY IN NORTHEAST MONTANA

* UNTIL 645 PM MDT

* AT 536 PM MDT...A TRAINED WEATHER SPOTTER REPORTED A LINE OF 
TORNADO PRODUCING STORMS FROM 38 MILES WEST OF BRUSETT TO 9 MILES 
WEST OF MOSBY...MOVING EAST AT 20 MPH. 

* TORNADO PRODUCING STORMS ARE EXPECTED TO BE NEAR...
  MOSBY AT 555 PM MDT
  SAND SPRINGS AT 645 PM MDT

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4754 10784 4726 10794 4691 10788 4692 10704
          4765 10706

.END
POHL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 8, 4:51 PM MDTSevere Thunderstorm WarningGGWPetroleum54 min
Jul 8, 5:01 PM MDTTornado WarningGGWPetroleum59 min
Jul 8, 5:59 PM MDTSevere Thunderstorm WarningGGWPetroleum61 min

Nearby

Tornado Warnings in Montana, 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; radar from the NEXRAD Level II archive.