Alert archive / Montana / Tornado Warnings in 2010
Tornado Warning 29, NWS Billings, MT
NWS Billings, MT issued this tornado warning at Jun 21, 2010, 9:16 PM MDT for Carter County, Montana. It was in force for 14 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 21, 2010, 9:16 PM MDT (03:16 UTC)
- Expired
- Jun 21, 2010, 9:30 PM MDT
- In force
- 14 min
- Issued by
- NWS Billings, MT
- Area
- Storm-based polygon
County Carter County, MT
The radar
The Rapid City radar (KUDX), 205 km from the middle of the area, began a volume at 03:20 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 21, 8:54 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 3.3 hours before the alert went out and 327 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
- 279 J/kg
- Mixed-layer CIN
- -250 J/kg
- Mixed-layer LCL
- 1509 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Jun 21, 9:00 PM MDT, 16 minutes earlier.
Area forecast discussion, Jun 21, 9:00 PM MDT, 16 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BILLINGS MT 225 PM MDT MON JUN 21 2010 MTZ028>042-056>058-063>068-WYZ098-099-222030- 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- 225 PM MDT MON JUN 21 2010 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 A COLD FRONT WILL PUSH THROUGH THE FORECAST AREA THIS AFTERNOON THROUGH THIS EVENING. THUNDERSTORMS WILL DEVELOP ALONG THIS FRONT. SOME OF THESE STORMS MAY BECOME SEVERE FROM BILLINGS EAST AND SOUTHEAST. LARGE HAIL...DAMAGING WINDS AND VERY HEAVY RAIN WILL BE THE PRIMARY THREATS THROUGH THIS EVENING. MUCH OF THE AREA HAS RECENTLY RECEIVED SIGNIFICANT RAINFALL. ADDITIONAL RAINFALL WILL QUICKLY RUN OFF AND MAY LEAD TO FLASH FLOODING. STAY TUNED TO LOCAL MEDIA FOR ANY SEVERE WEATHER WARNINGS OR FLASH FLOOD WARNINGS INTO TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .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 21, 7:56 PM MDT, 1 hour 20 minutes before
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</html>Local storm report, Jun 21, 8:02 PM MDT, 1 hour 14 minutes before
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</html>Local storm report, Jun 21, 8:32 PM MDT, 44 minutes before
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</html>Local storm report, Jun 21, 8:54 PM MDT, 22 minutes before
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</html>Local storm report, Jun 21, 9:04 PM MDT, 12 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 |
|---|---|---|---|---|
| Jun 21, 6:13 PM MDT | Special Weather Statement | BYZ | Powder River | 62 min |
| Jun 21, 6:22 PM MDT | Tornado Warning | BYZ | Powder River | 23 min |
| Jun 21, 6:28 PM MDT | Tornado Warning | BYZ | Rosebud | 17 min |
| Jun 21, 6:29 PM MDT | Tornado Warning | BYZ | Powder River, Rosebud | 31 min |
| Jun 21, 6:41 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 39 min |
| Jun 21, 6:43 PM MDT | Tornado Warning | BYZ | Powder River | 32 min |
| Jun 21, 6:48 PM MDT | Tornado Warning | BYZ | Powder River | 27 min |
| Jun 21, 7:07 PM MDT | Special Weather Statement | BYZ | Rosebud | 53 min |
| Jun 21, 7:16 PM MDT | Tornado Warning | BYZ | Powder River | 29 min |
| Jun 21, 7:16 PM MDT | Tornado Warning | BYZ | Powder River | 29 min |
| Jun 21, 7:20 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Rosebud | 55 min |
| Jun 21, 7:31 PM MDT | Tornado Warning | BYZ | Rosebud | 29 min |
| Jun 21, 7:46 PM MDT | Tornado Warning | BYZ | Powder River | 29 min |
| Jun 21, 7:48 PM MDT | Tornado Warning | BYZ | Powder River | 27 min |
| Jun 21, 7:58 PM MDT | Tornado Warning | BYZ | Custer, Rosebud | 32 min |
| Jun 21, 8:14 PM MDT | Tornado Warning | BYZ | Carter, Powder River | 31 min |
| Jun 21, 8:15 PM MDT | Flash Flood Warning | BYZ | Carter, Powder River | 6 hr |
| Jun 21, 8:21 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 54 min |
| Jun 21, 8:28 PM MDT | Tornado Warning | BYZ | Custer | 22 min |
| Jun 21, 8:37 PM MDT | Tornado Warning | BYZ | Carter, Powder River | 23 min |
| Jun 21, 8:42 PM MDT | Tornado Warning | BYZ | Carter | 33 min |
| Jun 21, 9:00 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 60 min |
| Jun 21, 9:58 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 32 min |
| Jun 22, 2:23 PM MDT | Special Weather Statement | BYZ | Big Horn | 52 min |
| Jun 22, 2:40 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 65 min |
| Jun 22, 2:49 PM MDT | Flash Flood Warning | BYZ | Big Horn | 3 hr |
| Jun 22, 4:05 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 55 min |
| Jun 22, 4:18 PM MDT | Special Weather Statement | BYZ | Powder River | 57 min |
| Jun 22, 4:54 PM MDT | Special Weather Statement | BYZ | Musselshell | 66 min |
| Jun 22, 5:13 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 62 min |
| Jun 22, 5:29 PM MDT | Flash Flood Warning | BYZ | Carter | 3 hr |
| Jun 22, 2:27 PM MDT | Special Weather Statement | BYZ | Sheridan | 63 min |
| Jun 22, 2:36 PM MDT | Severe Thunderstorm Warning | BYZ | Sheridan | 54 min |
| Jun 22, 3:35 PM MDT | Special Weather Statement | BYZ | Sheridan | 55 min |
| Jun 22, 4:32 PM MDT | Flash Flood Warning | BYZ | Sheridan | 3 hr |
Nearby
Tornado Warnings in Montana, 2010Every tornado warning in 2010Tornadoes in 2010
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.