Alert archive / Montana / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 16, NWS Great Falls, MT

June 1, 2008Fergus County, Montana

NWS Great Falls, MT issued this severe thunderstorm warning at Jun 1, 2008, 4:57 PM MDT for Fergus County, Montana. It was in force for 48 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 1, 2008, 4:57 PM MDT (22:57 UTC)
Expired: Jun 1, 2008, 5:45 PM MDT
In force: 48 min
Issued by: NWS Great Falls, MT
Area: Storm-based polygon

County Fergus County, MT

The radar

The Billings radar (KBLX), 164 km from the middle of the area, began a volume at 22:59 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 12:00Z, 11.0 hours before the alert went out and 106 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: 1 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1550 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 1, 2:49 PM MDT, 2 hours 8 minutes earlier.

Area forecast discussion, Jun 1, 2:49 PM MDT, 2 hours 8 minutes before

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Hazardous weather outlook, Jun 1, 5:10 AM MDT, 11 hours 47 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREAT FALLS MT
510 AM MDT SUN JUN 1 2008

MTZ008>015-044>055-021200-
BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL-
CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON-
TOOLE-LIBERTY-EASTERN PONDERA-BLAINE-
SOUTHERN ROCKY MOUNTAIN FRONT-EASTERN TETON-JUDITH BASIN-FERGUS-
JEFFERSON-BROADWATER-MEAGHER-GALLATIN-
510 AM MDT SUN JUN 1 2008

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

.DAY ONE...TODAY AND TONIGHT

SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE OVER THE
REGION THROUGHOUT THE DAY TODAY. HOWEVER...THE THUNDERSTORM
ACTIVITY WILL BECOME A BIT MORE WIDESPREAD BY LATE THIS AFTERNOON.
A FEW THUNDERSTORMS COULD BECOME SEVERE...WITH DAMAGING WINDS AND
LARGE HAIL POSSIBLE. THE BEST TIME FRAME FOR THE STRONGEST
THUNDERSTORMS TO OCCUR WILL BE FROM 3 PM THIS AFTERNOON
UNTIL 10 PM THIS EVENING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SCATTERED THUNDERSTORMS ARE POSSIBLE OVER THE REGION ON MONDAY. A
FEW STORMS COULD BE STRONG...PRODUCING GUSTY WINDS AND SMALL HAIL.

.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 1, 2:48 PM MDT, 2 hours 9 minutes before

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Local storm report, Jun 1, 2:59 PM MDT, 1 hour 58 minutes before

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Local storm report, Jun 1, 3:00 PM MDT, 1 hour 57 minutes before

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      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
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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
May 31, 7:51 PM MDT	Severe Thunderstorm Warning	TFX	Lewis and Clark	24 min
Jun 1, 1:43 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	47 min
Jun 1, 2:01 PM MDT	Severe Thunderstorm Warning	TFX	Cascade	44 min
Jun 1, 2:29 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	46 min
Jun 1, 2:30 PM MDT	Severe Thunderstorm Warning	TFX	Fergus, Judith Basin	45 min
Jun 1, 5:08 PM MDT	Tornado Warning	TFX	Fergus	37 min

Nearby

Severe Thunderstorm Warnings in Montana, 2008 Every severe thunderstorm warning in 2008

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.