Alert archive / Montana / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 12, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 10, 2012, 9:32 PM MDT for Stillwater County, Yellowstone County, Montana. It was in force for 43 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
- Jul 10, 2012, 9:32 PM MDT (03:32 UTC)
- Expired
- Jul 10, 2012, 10:15 PM MDT
- In force
- 43 min
- Issued by
- NWS Billings, MT
- Area
- Storm-based polygon
Counties Stillwater County, MT, Yellowstone County, MT
The radar
The Billings radar (KBLX), 19 km from the middle of the area, began a volume at 03:32 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.5 hours before the alert went out and 318 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
- 324 J/kg
- Mixed-layer CIN
- -145 J/kg
- Mixed-layer LCL
- 3125 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 10, 9:00 PM MDT, 32 minutes earlier.
Area forecast discussion, Jul 10, 9:00 PM MDT, 32 minutes before
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</html>Hazardous weather outlook, Jul 10, 2:15 PM MDT, 7 hours 17 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BILLINGS MT 215 PM MDT TUE JUL 10 2012 MTZ028>042-056>058-063>068-WYZ098-099-112015- SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER- FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER- SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK- NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS- NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY- LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS- CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS- 215 PM MDT TUE JUL 10 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH CENTRAL WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT CRITICAL FIRE WEATHER CONDITIONS ARE EXPECTED THIS AFTERNOON AND EVENING FROM YELLOWSTONE AND MUSSELSHELL COUNTIES WESTWARD. SCATTERED DRY THUNDERSTORMS WILL DEVELOP WEST OF BILLINGS THIS AFTERNOON. THESE STORMS WILL SPREAD EAST DURING THE EVENING AND TURN WETTER. THUNDERSTORMS WILL HAVE STRONG WIND GUSTS TO 50 MPH. LIGHTNING...VERY LOW HUMIDITIES AND STRONG THUNDERSTORM WINDS WILL POSE A THREAT FOR FIRE STARTS AND QUICK SPREADING OF FIRES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY WEDNESDAY WILL BE ANOTHER CRITICAL FIRE WEATHER DAY. SCATTERED WET AND DRY THUNDERSTORMS WILL DEVELOP DURING THE AFTERNOON AND CONTINUE INTO THE EVENING ACROSS THE ENTIRE AREA. THE THUNDERSTORMS WILL HAVE STRONG WIND GUSTS TO 50 MPH. IN ADDITION...LIGHTNING...VERY LOW HUMIDITIES AND STRONG THUNDERSTORM WINDS WILL CONTINUE TO POSE A THREAT FOR FIRE STARTS AND QUICK SPREADING OF FIRES. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. HOOLEY
In the hours before
Special weather statement, Jul 10, 3:51 PM MDT, 5 hours 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
351 PM MDT TUE JUL 10 2012
MTZ034-066-067-102230-
ABSAROKA/BEARTOOTH MOUNTAINS MT-BEARTOOTH FOOTHILLS MT-NORTHERN
STILLWATER MT-
351 PM MDT TUE JUL 10 2012
...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL STILLWATER AND EASTERN
SWEET GRASS COUNTIES UNTIL 430 PM MDT...
AT 345 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 17 MILES WEST OF ABSAROKEE...OR 24 MILES SOUTH OF
BIG TIMBER...MOVING EAST AT 30 MPH.
WIND GUSTS UP TO 50 MPH AND DIME SIZE HAIL ARE EXPECTED WITH THIS
STORM...ALONG WITH BRIEF HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.
THIS STORM WILL BE NEAR OR A LITTLE NORTH OF ABSAROKEE BY 415 PM MDT.
LAT...LON 4569 10951 4553 10913 4553 10918 4550 10920
4544 10986 4554 10992
TIME...MOT...LOC 2149Z 256DEG 27KT 4552 10975Special weather statement, Jul 10, 4:10 PM MDT, 5 hours 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BILLINGS MT 410 PM MDT TUE JUL 10 2012 MTZ039-056-067-102245- ABSAROKA/BEARTOOTH MOUNTAINS MT-EASTERN CARBON MT-RED LODGE FOOTHILLS MT- 410 PM MDT TUE JUL 10 2012 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL CARBON COUNTY UNTIL 445 PM MDT... AT 406 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR RED LODGE...MOVING EAST AT 30 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH BRIEF HEAVY RAIN. THIS STORM WILL BE NEAR... WASHOE AROUND 415 PM MDT. BEARCREEK AND FOX AROUND 425 PM MDT. BELFRY AROUND 445 PM MDT. LAT...LON 4541 10904 4513 10886 4508 10932 4520 10941 TIME...MOT...LOC 2209Z 252DEG 13KT 4516 10924
Special weather statement, Jul 10, 5:17 PM MDT, 4 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
517 PM MDT TUE JUL 10 2012
MTZ038-039-110015-
EASTERN CARBON MT-SOUTHERN BIG HORN MT-
517 PM MDT TUE JUL 10 2012
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BIG HORN AND EASTERN
CARBON COUNTIES UNTIL 615 PM MDT...
AT 518 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 18 MILES SOUTHEAST OF PRYOR...OR 24 MILES NORTH
OF LOVELL...MOVING EAST AT 25 MPH.
HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
THIS STORM WILL BE NEAR...
FORT SMITH AROUND 610 PM MDT.
LAT...LON 4509 10850 4527 10851 4541 10777 4500 10767
4500 10785
TIME...MOT...LOC 2317Z 266DEG 20KT 4519 10838Local storm report, Jul 10, 7:41 PM MDT, 1 hour 51 minutes before
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</html>Special weather statement, Jul 10, 8:23 PM MDT, 1 hour 9 minutes before
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</html>Special weather statement, Jul 10, 9:12 PM MDT, 20 minutes before
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</html>The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 8:23 PM MDT | Special Weather Statement | BYZ | Stillwater, Sweet Grass | 37 min |
| Jul 10, 9:12 PM MDT | Special Weather Statement | BYZ | Yellowstone | 48 min |
| Jul 10, 9:52 PM MDT | Special Weather Statement | BYZ | Musselshell | 38 min |
| Jul 10, 10:22 PM MDT | Special Weather Statement | BYZ | Yellowstone | 53 min |
| Jul 11, 5:55 PM MDT | Special Weather Statement | BYZ | Yellowstone | 65 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2012Every severe thunderstorm warning in 2012
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.