Alert archive / Montana / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 39, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at May 19, 2007, 7:40 PM MDT for Yellowstone County, Montana. It was in force for 30 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
- May 19, 2007, 7:40 PM MDT (01:40 UTC)
- Expired
- May 19, 2007, 8:10 PM MDT
- In force
- 30 min
- Issued by
- NWS Billings, MT
- Area
- Counties, with a storm outline in the text
County Yellowstone County, MT
The radar
The Billings radar (KBLX), 27 km from the middle of the area, began a volume at 01:39 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 |
|---|---|---|---|
| May 19, 2:36 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.7 hours before the alert went out and 284 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
- 1211 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 243 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 May 19, 5:25 PM MDT, 2 hours 15 minutes earlier.
Area forecast discussion, May 19, 5:25 PM MDT, 2 hours 15 minutes before
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</html>Hazardous weather outlook, May 19, 5:06 AM MDT, 14 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BILLINGS MT 506 AM MDT SAT MAY 19 2007 MTZ031-058-201115- NORTHERN ROSEBUD-SOUTHERN ROSEBUD- 506 AM MDT SAT MAY 19 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MONTANA. .DAY ONE...TODAY AND TONIGHT LOW LAND FLOODING WILL CONTINUE ALONG THE TONGUE RIVER FROM BIRNEY TO ASHLAND AND BRANDENBERG. STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE TONIGHT. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY STRONG THUNDERSTORMS ARE POSSIBLE SUNDAY. A STRONG STORM SYSTEM MOVING INTO THE AREA ON MONDAY COULD BRING LOCALLY HEAVY RAINS MONDAY AND TUESDAY. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. MTZ028>030-032>042-056-057-063>068-WYZ098-099-201115- SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-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-JUDITH GAP-PARADISE VALLEY-LIVINGSTON AREA- BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-CRAZY MOUNTAINS- NORTHEAST BIG HORN MOUNTAINS-SHERIDAN FOOTHILLS- 506 AM MDT SAT MAY 19 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MONTANA...SOUTH CENTRAL MONTANA...SOUTHEAST MONTANA AND NORTH CENTRAL WYOMING. .DAY ONE...TODAY AND TONIGHT STRONG TO SEVERE THUNDERSTORMS WITH DAMAGING WIND AND LARGE HAIL WILL BE POSSIBLE THIS AFTERNOON AND EVENING. . .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY A STORM SYSTEM MOVING THROUGH THE AREA ON MONDAY AND TUESDAY WILL BRING A CHANCE FOR LOCALLY HEAVY RAIN. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
In the hours before
Local storm report, May 19, 7:02 PM MDT, 38 minutes before
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</html>Local storm report, May 19, 7:24 PM MDT, 16 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 |
|---|---|---|---|---|
| May 19, 6:08 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 67 min |
| May 19, 6:28 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 62 min |
| May 19, 6:46 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 59 min |
| May 19, 6:55 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 65 min |
| May 19, 7:26 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 35 min |
| May 20, 2:11 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 60 min |
| May 20, 4:51 PM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Wheatland | 37 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2007Every severe thunderstorm warning in 2007
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.