Alert archive / Montana / Tornado Warnings in 2001

Tornado Warning 2, NWS Glasgow, MT

July 5, 2001Roosevelt County, Montana

NWS Glasgow, MT issued this tornado warning at Jul 5, 2001, 9:33 PM MDT for Roosevelt County, Montana. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 5, 2001, 9:33 PM MDT (03:33 UTC)
Expired: Jul 5, 2001, 10:15 PM MDT
In force: 42 min
Issued by: NWS Glasgow, MT
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Roosevelt County, MT

The watch it was issued in

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

Issued	Product	Office	Lasted
Jul 5, 8:00 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.6 hours before the alert went out and 168 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2576 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 2345 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 108 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 8.3

Open this sounding in Storm Lab

The text

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

000 
WFUS55 KGGW 060334
TORGGW

MTC085-060415-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
933 PM MDT THU JUL 5 2001

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN ROOSEVELT COUNTY IN NORTHEAST MONTANA

* UNTIL 1015 PM MDT

* AT 931 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 10 MILES NORTHWEST OF BAINVILLE...OR ABOUT 9 MILES
  NORTHEAST OF CULBERTSON...MOVING EAST AT 15 MPH.

* THE TORNADO PRODUCING STORM WILL REMAIN OVER...
  RURAL EASTERN ROOSEVELT COUNTY

A TRAINED WEATHER SPOTTER REPORTED A FUNNEL CLOUD NORTH OF 
CULBERTSON.

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.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILoABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4828 10457 4815 10438 4806 10406 4838 10407
          4838 10437

.END
81

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 8:01 PM MDT	Severe Thunderstorm Warning	GGW	Roosevelt	89 min
Jul 5, 8:17 PM MDT	Severe Thunderstorm Warning	GGW	Dawson	58 min
Jul 5, 8:47 PM MDT	Severe Thunderstorm Warning	GGW	Roosevelt, Sheridan	88 min
Jul 5, 9:31 PM MDT	Tornado Warning	GGW	Richland	59 min
Jul 5, 9:54 PM MDT	Severe Thunderstorm Warning	GGW	Dawson	36 min
Jul 5, 10:30 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, Wibaux	60 min
Jul 5, 10:45 PM MDT	Severe Thunderstorm Warning	GGW	Prairie	60 min

Nearby

Tornado Warnings in Montana, 2001 Every tornado warning in 2001 Tornadoes in 2001

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.