Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 39, NWS Great Falls, MT

July 3, 2000Hill County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jul 3, 2000, 4:01 PM MDT for Hill County, Montana. It was in force for 29 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 3, 2000, 4:01 PM MDT (22:01 UTC)
Expired: Jul 3, 2000, 4:30 PM MDT
In force: 29 min
Issued by: NWS Great Falls, MT
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Hill County, MT

The radar

The Great Falls radar (KTFX), 165 km from the middle of the area, began a volume at 22:02 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.

Issued	Product	Office	Lasted
Jul 3, 1:30 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 10.0 hours before the alert went out and 124 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2111 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 319 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.

378 
WUUS55 KTFX 032201
SVRGTF
MTC005-041-032230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
401 PM MDT MON JUL 3 2000

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN HILL COUNTY IN NORTH CENTRAL MONTANA

* UNTIL 430 PM MDT

* AT 359 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
A   SEVERE THUNDERSTORM OVER EXTREME SOUTHEASTERN HILL COUNTY...OR   
ABOUT 18 MILES SOUTH OF HAVRE...MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
RURAL SOUTHEASTERN HILL COUNTY AT 420 PM MDT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN GREAT FALLS.

LAT...LON 4832 10987 4819 10967 4843 10926 4859 10950

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 2, 6:47 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	43 min
Jul 3, 1:37 PM MDT	Severe Thunderstorm Warning	TFX	Judith Basin	23 min
Jul 3, 1:41 PM MDT	Severe Thunderstorm Warning	TFX	Broadwater, Gallatin	49 min
Jul 3, 1:57 PM MDT	Severe Thunderstorm Warning	TFX	Judith Basin	33 min
Jul 3, 2:03 PM MDT	Severe Thunderstorm Warning	TFX	Meagher	42 min
Jul 3, 2:45 PM MDT	Severe Thunderstorm Warning	TFX	Meagher	30 min
Jul 3, 3:20 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau, Hill	40 min
Jul 3, 3:26 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau	49 min
Jul 3, 3:42 PM MDT	Severe Thunderstorm Warning	TFX	Judith Basin	33 min
Jul 3, 3:56 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	34 min
Jul 3, 4:12 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	33 min
Jul 3, 4:25 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	50 min
Jul 3, 4:35 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	40 min
Jul 3, 5:17 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	28 min
Jul 3, 5:20 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	40 min

Nearby

Severe Thunderstorm Warnings in Montana, 2000 Every severe thunderstorm warning in 2000

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.