Alert archive / Montana / Special Weather Statements in 2011
Special Weather Statement, NWS Great Falls, MT
NWS Great Falls, MT issued this special weather statement at Aug 14, 2011, 9:52 PM MDT for Cascade County, Montana. It was in force for 38 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
- Aug 14, 2011, 9:52 PM MDT (03:52 UTC)
- Expired
- Aug 14, 2011, 10:30 PM MDT
- In force
- 38 min
- Issued by
- NWS Great Falls, MT
County Cascade County, MT
The radar
The Great Falls radar (KTFX), 24 km from the middle of the area, began a volume at 03:52 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, 3.9 hours before the alert went out and 41 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3913 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Aug 14, 9:40 PM MDT, 12 minutes earlier.
Area forecast discussion, Aug 14, 9:40 PM MDT, 12 minutes before
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</html>Hazardous weather outlook, Aug 14, 4:19 AM MDT, 17 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 419 AM MDT SUN AUG 14 2011 MTZ008>015-044>055-151030- 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- 419 AM MDT SUN AUG 14 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...TODAY AND TONIGHT THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
In the hours before
Local storm report, Aug 14, 8:44 PM MDT, 1 hour 8 minutes before
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SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 857 PM MDT SUN AUG 14 2011 MTZ012-150345- CASCADE MT-MEAGHER MT- 857 PM MDT SUN AUG 14 2011 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CASCADE COUNTIES UNTIL 945 PM MDT... AT 855 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A MODERATE THUNDERSTORM 13 MILES SOUTHEAST OF CASCADE...MOVING NORTHEAST AT 25 MPH. LOCATIONS NEAR THE PATH OF THE THUNDERSTORM INCLUDE ULM...CASCADE...SAND COULEE AND GREAT FALLS. HAIL UP TO A HALF INCH IN DIAMETER...WIND GUSTS TO 50 MPH AND BRIEF HEAVY RAINFALL ARE POSSIBLE FROM THIS STORM. LAT...LON 4763 11117 4716 11088 4698 11155 4727 11185 TIME...MOT...LOC 0257Z 223DEG 23KT 4712 11155
Local storm report, Aug 14, 9:41 PM MDT, 11 minutes before
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</html>Local storm report, Aug 14, 9:52 PM MDT, 0 minutes before
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</html>Special weather statement, Aug 14, 9:52 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 8:57 PM MDT | Special Weather Statement | TFX | Cascade | 48 min |
| Aug 14, 9:26 PM MDT | Red Flag Warning | TFX | Blaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 6 more | 24 hr |
| Aug 14, 10:24 PM MDT | Special Weather Statement | TFX | Judith Basin | 51 min |
| Aug 14, 10:35 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Chouteau, Hill, Liberty, Pondera, Teton | 40 min |
| Aug 14, 10:36 PM MDT | Special Weather Statement | TFX | Chouteau | 39 min |
| Aug 14, 11:14 PM MDT | Special Weather Statement | TFX | Hill | 46 min |
| Aug 15, 1:41 AM MDT | Special Weather Statement | TFX | Madison | 49 min |
| Aug 15, 1:32 PM MDT | Special Weather Statement | TFX | Gallatin | 43 min |
| Aug 15, 3:00 PM MDT | Special Weather Statement | TFX | Broadwater | 45 min |
Nearby
Special Weather Statements in Montana, 2011Every special weather statement in 2011
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.