Alert archive / Montana / Tornado Warnings in 2005

Tornado Warning 1, NWS Great Falls, MT

June 17, 2005Fergus County, Montana

NWS Great Falls, MT issued this tornado warning at Jun 17, 2005, 4:41 PM MDT for Fergus County, Montana. It was in force for 34 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 17, 2005, 4:41 PM MDT (22:41 UTC)
Expired: Jun 17, 2005, 5:15 PM MDT
In force: 34 min
Issued by: NWS Great Falls, MT
Area: Counties, with a storm outline in the text

County Fergus County, MT

The radar

The Great Falls radar (KTFX), 136 km from the middle of the area, began a volume at 22:44 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
Jun 17, 12:55 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 10.7 hours before the alert went out and 78 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: 1012 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 191 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.

000 
WFUS55 KTFX 172241
TORTFX
MTC027-172315-
/O.NEW.KTFX.TO.W.0001.050617T2241Z-050617T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GREAT FALLS MT
441 PM MDT FRI JUN 17 2005

THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL FERGUS COUNTY IN CENTRAL MONTANA

* UNTIL 515 PM MDT

* AT 434 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO OVER
  NORTHWESTERN FERGUS COUNTY...OR ABOUT 12 MILES SOUTHEAST OF ILIAD.
  THIS DANGEROUS STORM IS MOVING NORTHEAST AT 30 MPH.

THIS REPLACES THE SEVERE THUNDERSTORM WARNING PREVIOUSLY ISSUED FOR
NORTH CENTRAL FERGUS COUNTY.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

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

LAT...LON 4770 10977 4755 10967 4758 10935 4773 10943

$$

BLANK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 6:20 PM MDT	Severe Thunderstorm Warning	TFX	Broadwater, Lewis and Clark	40 min
Jun 16, 6:44 PM MDT	Severe Thunderstorm Warning	TFX	Cascade, Meagher	84 min
Jun 16, 7:51 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau	52 min
Jun 16, 7:58 PM MDT	Flash Flood Warning	TFX	Chouteau	3 hr
Jun 16, 9:38 PM MDT	Severe Thunderstorm Warning	TFX	Beaverhead, Madison	57 min
Jun 17, 12:56 PM MDT	Severe Thunderstorm Warning	TFX	Lewis and Clark, Teton	39 min
Jun 17, 3:23 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau, Judith Basin	37 min
Jun 17, 3:56 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau, Fergus	49 min
Jun 17, 3:59 PM MDT	Severe Thunderstorm Warning	TFX	Toole	52 min
Jun 17, 4:18 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau, Liberty	45 min
Jun 17, 4:55 PM MDT	Tornado Warning	TFX	Blaine, Fergus	37 min
Jun 17, 5:04 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	51 min
Jun 17, 5:07 PM MDT	Severe Thunderstorm Warning	TFX	Hill, Liberty	27 min
Jun 17, 5:42 PM MDT	Severe Thunderstorm Warning	TFX	Blaine	83 min

Nearby

Tornado Warnings in Montana, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.