Alert archive / Montana / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 29, NWS Great Falls, MT

June 13, 2006Glacier County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jun 13, 2006, 9:15 PM MDT for Glacier County, Montana. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 13, 2006, 9:15 PM MDT (03:15 UTC)
Expired: Jun 13, 2006, 10:15 PM MDT
In force: 60 min
Issued by: NWS Great Falls, MT
Area: Counties, with a storm outline in the text

County Glacier County, MT

The radar

The Great Falls radar (KTFX), 183 km from the middle of the area, began a volume at 03:14 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 nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 3.3 hours before the alert went out and 225 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: 1571 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 1492 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 13, 8:46 PM MDT, 29 minutes earlier.

Area forecast discussion, Jun 13, 8:46 PM MDT, 29 minutes before

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Hazardous weather outlook, Jun 13, 5:17 AM MDT, 15 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
517 AM MDT TUE JUN 13 2006

MTZ011>013-045-047-050-051-054-141130-
HILL-CASCADE-CHOUTEAU-LIBERTY-BLAINE-JUDITH BASIN-FERGUS-MEAGHER-
517 AM MDT TUE JUN 13 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL
MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON
AND THIS EVENING. THE SLIGHT RISK WILL BE MAINLY WEST OF THIS AREA.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS WEDNESDAY AFTERNOON
AND EVENING.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MTZ008>010-014-015-044-046-048-049-052-053-055-141130-
BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-
CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-TOOLE-
EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-
JEFFERSON-BROADWATER-GALLATIN-
517 AM MDT TUE JUN 13 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
MONTANA AND SOUTHWEST MONTANA.

.DAY ONE...TODAY AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS LATE THIS AFTERNOON
AND THIS EVENING. THIS SLIGHT RISK WILL BE MAINLY OVER
GLACIER...PONDERA...TETON AND TOOLE COUNTIES FROM 400 PM MDT TO
900 PM MDT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jun 13, 7:17 PM MDT, 1 hour 58 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
717 PM MDT TUE JUN 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0715 PM     HAIL             BROWNING                48.56N 113.01W
06/13/2006  E0.50 INCH       GLACIER            MT   TRAINED SPOTTER

&&

BRUSDA

Local storm report, Jun 13, 7:42 PM MDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
742 PM MDT TUE JUN 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0737 PM     HAIL             15 SW BROWNING          48.40N 113.25W
06/13/2006  M0.88 INCH       GLACIER            MT   TRAINED SPOTTER

            NICKEL SIZE HAIL STARTING TO COVER THE GROUND.

&&

BRUSDA

Local storm report, Jun 13, 7:56 PM MDT, 1 hour 19 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
756 PM MDT TUE JUN 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0752 PM     HAIL             6 N FAIRFIELD           47.70N 111.98W
06/13/2006  M1.75 INCH       TETON              MT   OTHER FEDERAL

            GOLF BALL SIZE HAIL FALLING.

&&

BRUSDA

Local storm report, Jun 13, 8:13 PM MDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
813 PM MDT TUE JUN 13 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 PM     TORNADO          12 SW CUT BANK          48.51N 112.52W
06/13/2006                   GLACIER            MT   PUBLIC

            POSSIBLE TORNADO...REPORTED BY PUBLIC.

&&

BRUSDA

Local storm report, Jun 13, 8:50 PM MDT, 25 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 7:17 PM MDT	Severe Thunderstorm Warning	TFX	Glacier	58 min
Jun 13, 7:28 PM MDT	Severe Thunderstorm Warning	TFX	Teton	62 min
Jun 13, 8:09 PM MDT	Severe Thunderstorm Warning	TFX	Glacier	66 min
Jun 13, 8:30 PM MDT	Severe Thunderstorm Warning	TFX	Teton	60 min
Jun 13, 8:40 PM MDT	Tornado Warning	TFX	Glacier	35 min
Jun 13, 8:46 PM MDT	Severe Thunderstorm Warning	TFX	Pondera	44 min
Jun 13, 10:23 PM MDT	Severe Thunderstorm Warning	TFX	Judith Basin	39 min
Jun 14, 2:44 AM MDT	Severe Thunderstorm Warning	TFX	Fergus	31 min
Jun 14, 4:02 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau	43 min

Nearby

Severe Thunderstorm Warnings in Montana, 2006 Every severe thunderstorm warning in 2006

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.