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 Jul 14, 2011, 2:07 PM MDT for Madison 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
- Jul 14, 2011, 2:07 PM MDT (20:07 UTC)
- Expired
- Jul 14, 2011, 2:45 PM MDT
- In force
- 38 min
- Issued by
- NWS Great Falls, MT
County Madison County, MT
The radar
The Pocatello radar (KSFX), 227 km from the middle of the area, began a volume at 20:09 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, 8.1 hours before the alert went out and 286 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
- 88 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1371 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 88 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 Jul 14, 11:20 AM MDT, 2 hours 47 minutes earlier.
Area forecast discussion, Jul 14, 11:20 AM MDT, 2 hours 47 minutes before
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</html>Hazardous weather outlook, Jul 14, 2:01 PM MDT, 6 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GREAT FALLS MT 201 PM MDT THU JUL 14 2011 MTZ047-051-152015- BLAINE-FERGUS- 201 PM MDT THU JUL 14 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA AND NORTH CENTRAL MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT SEVERE THUNDERSTORM WATCH 642 IS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR BLAINE AND FERGUS COUNTIES. WIDESPREAD THUNDERSTORM ACTIVITY IS EXPECTED THIS AFTERNOON AND EVENING. SOME OF THESE STORMS MAY BE SEVERE WITH LOCALLY HEAVY RAINFALL...HAIL AND GUSTY DAMAGING WINDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME. MTZ008>015-044>046-048>050-052>055-152015- BEAVERHEAD-NORTHERN ROCKY MOUNTAIN FRONT-EASTERN GLACIER-HILL- CASCADE-CHOUTEAU-CENTRAL AND SOUTHERN LEWIS AND CLARK-MADISON- TOOLE-LIBERTY-EASTERN PONDERA-SOUTHERN ROCKY MOUNTAIN FRONT- EASTERN TETON-JUDITH BASIN-JEFFERSON-BROADWATER-MEAGHER-GALLATIN- 201 PM MDT THU JUL 14 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...NORTH CENTRAL MONTANA AND SOUTHWEST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP AGAIN THIS AFTERNOON AND EVENING ACROSS THE REGION. A FEW STORMS MAY BECOME STRONG TO SEVERE WITH LOCALLY HEAVY RAINFALL...SMALL HAIL...AND GUSTY OUTFLOW WINDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY 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, Jul 14, 8:23 AM MDT, 5 hours 44 minutes before
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</html>Local storm report, Jul 14, 9:18 AM MDT, 4 hours 49 minutes before
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</html>Special weather statement, Jul 14, 10:31 AM MDT, 3 hours 36 minutes before
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</html>Local storm report, Jul 14, 12:59 PM MDT, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREAT FALLS MT
1259 PM MDT THU JUL 14 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1100 AM HEAVY RAIN 3 SE GEYSER 47.24N 110.46W
07/14/2011 U0.00 INCH JUDITH BASIN MT TRAINED SPOTTER
ESTIMATED WINDS OF 20 TO 25 MPH AROUND 1100AM MDT.
HEAVY RAIN. NO HAIL.
&&
MLSSpecial weather statement, Jul 14, 2:07 PM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GREAT FALLS MT 207 PM MDT THU JUL 14 2011 MTZ008-015-142045- BEAVERHEAD MT-MADISON MT- 207 PM MDT THU JUL 14 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN MADISON AND EASTERN BEAVERHEAD COUNTIES UNTIL 245 PM MDT... AT 204 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 23 MILES NORTH OF MONIDA...OR 29 MILES SOUTHEAST OF DILLON...MOVING NORTHEAST AT 35 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...VIRGINIA CITY. IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A STURDY BUILDING. LAT...LON 4539 11198 4509 11158 4475 11233 4488 11248 TIME...MOT...LOC 2007Z 225DEG 29KT 4491 11224 MLS
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 6:08 PM MDT | Severe Thunderstorm Warning | TFX | Blaine, Chouteau, Hill | 37 min |
| Jul 13, 6:14 PM MDT | Special Weather Statement | TFX | Meagher | 46 min |
| Jul 13, 6:40 PM MDT | Areal Flood Advisory | TFX | Blaine, Cascade, Chouteau, Fergus, Hill, Judith Basin | 5 hr |
| Jul 13, 6:54 PM MDT | Flash Flood Warning | TFX | Blaine, Chouteau, Hill | 5 hr |
| Jul 13, 6:57 PM MDT | Special Weather Statement | TFX | Hill | 48 min |
| Jul 13, 7:12 PM MDT | Severe Thunderstorm Warning | TFX | Chouteau, Hill | 48 min |
| Jul 13, 8:24 PM MDT | Special Weather Statement | TFX | Blaine | 66 min |
| Jul 13, 8:27 PM MDT | Special Weather Statement | TFX | Blaine | 63 min |
| Jul 13, 8:29 PM MDT | Special Weather Statement | TFX | Hill | 61 min |
| Jul 13, 9:36 PM MDT | Special Weather Statement | TFX | Blaine | 54 min |
| Jul 14, 6:07 AM MDT | Special Weather Statement | TFX | Beaverhead | 53 min |
| Jul 14, 7:25 AM MDT | Special Weather Statement | TFX | Jefferson | 50 min |
| Jul 14, 7:41 AM MDT | Special Weather Statement | TFX | Silver Bow | 49 min |
| Jul 14, 8:06 AM MDT | Special Weather Statement | TFX | Broadwater | 39 min |
| Jul 14, 10:31 AM MDT | Special Weather Statement | TFX | Judith Basin | 44 min |
| Jul 14, 3:03 PM MDT | Special Weather Statement | TFX | Gallatin | 42 min |
| Jul 14, 3:53 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 52 min |
| Jul 14, 4:14 PM MDT | Special Weather Statement | TFX | Fergus | 61 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.