Alert archive / Montana / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 151, NWS Billings, MT

August 10, 2019Wheatland County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Aug 10, 2019, 8:55 PM MDT for Wheatland County, Montana. It was in force for 29 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
Aug 10, 2019, 8:55 PM MDT (02:55 UTC)
Expired
Aug 10, 2019, 9:24 PM MDT
In force
29 min
Issued by
NWS Billings, MT
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Wheatland County, MT

The radar

The Billings radar (KBLX), 117 km from the middle of the area, began a volume at 02:57 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.

IssuedProductOfficeLasted
Aug 10, 3:04 PM MDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 00:00Z, 2.9 hours before the alert went out and 125 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.

Skew-T log-pSkew-T log-p diagram, Great_falls, MT at 00:00Z on 2019-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 00:00Z on 2019-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2 J/kg
Mixed-layer CIN
-248 J/kg
Mixed-layer LCL
670 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
113 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Aug 10, 8:14 PM MDT, 41 minutes earlier.

Area forecast discussion, Aug 10, 8:14 PM MDT, 41 minutes before
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Hazardous weather outlook, Aug 10, 4:10 AM MDT, 16 hours 45 minutes before
Hazardous Weather Outlook
National Weather Service Billings MT
410 AM MDT Sat Aug 10 2019

MTZ028>042-056>058-063>068-WYZ098-099-111015-
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 Bighorn Mountains-Sheridan Foothills-
410 AM MDT Sat Aug 10 2019

This Hazardous Weather Outlook is for portions of central
Montana...south central Montana...southeast Montana and north
central Wyoming.

* WHAT...Severe thunderstorms.

* WHERE...South central and southeastern Montana and north central
  Wyoming.

* WHEN...This afternoon and evening and Sunday afternoon and
  evening.

* ADDITIONAL DETAILS...Thunderstorms could produce large hail,
  strong wind gusts and heavy rain. Be prepared if you have
  outdoor plans.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Hazardous Weather Outlook is issued when hazardous weather could
impact the region within the next week. Be sure to stay tuned for
future updates as locations, timing, and impacts could change.
Begin preparations to mitigate any impacts that could result from
the hazardous weather.

&&

In the hours before

Local storm report, Aug 10, 5:08 PM MDT, 3 hours 47 minutes before
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Local storm report, Aug 10, 5:11 PM MDT, 3 hours 44 minutes before
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Special weather statement, Aug 10, 5:23 PM MDT, 3 hours 32 minutes before
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Special weather statement, Aug 10, 5:28 PM MDT, 3 hours 27 minutes before
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Special weather statement, Aug 10, 5:43 PM MDT, 3 hours 12 minutes before
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Special weather statement, Aug 10, 6:15 PM MDT, 2 hours 40 minutes before
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The office that day

Everything else NWS Billings, MT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 10, 6:15 PM MDTSpecial Weather StatementBYZGolden Valley30 min
Aug 10, 8:29 PM MDTSevere Thunderstorm WarningBYZWheatland31 min
Aug 10, 9:27 PM MDTSpecial Weather StatementBYZGolden Valley, Wheatland63 min
Aug 11, 3:47 AM MDTFlash Flood WatchBYZCarter24 hr
Aug 11, 10:16 AM MDTSpecial Weather StatementBYZRosebud44 min
Aug 11, 11:14 AM MDTSpecial Weather StatementBYZRosebud46 min
Aug 11, 11:47 AM MDTSpecial Weather StatementBYZPrairie43 min
Aug 11, 1:32 PM MDTSpecial Weather StatementBYZPark43 min
Aug 11, 2:15 PM MDTSevere Thunderstorm WarningBYZPark, Sweet Grass45 min
Aug 11, 2:47 PM MDTSpecial Weather StatementBYZSweet Grass28 min
Aug 11, 2:55 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Stillwater, Sweet Grass, Wheatland50 min
Aug 11, 3:33 PM MDTSpecial Weather StatementBYZWheatland27 min
Aug 11, 3:41 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Wheatland64 min
Aug 11, 3:42 PM MDTSpecial Weather StatementBYZCarter63 min
Aug 11, 3:55 PM MDTSevere Thunderstorm WarningBYZSweet Grass, Wheatland50 min
Aug 11, 4:16 PM MDTSpecial Weather StatementBYZSweet Grass29 min
Aug 11, 4:27 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Wheatland63 min
Aug 11, 4:54 PM MDTSevere Thunderstorm WarningBYZSweet Grass66 min
Aug 11, 5:32 PM MDTSpecial Weather StatementBYZCarbon58 min
Aug 11, 5:54 PM MDTSevere Thunderstorm WarningBYZStillwater, Sweet Grass36 min
Aug 11, 5:59 PM MDTSpecial Weather StatementBYZBig Horn61 min
Aug 11, 5:59 PM MDTSevere Thunderstorm WarningBYZBig Horn31 min
Aug 10, 6:10 PM MDTSevere Thunderstorm WarningBYZSheridan26 min

Nearby

Severe Thunderstorm Warnings in Montana, 2019Every severe thunderstorm warning in 2019

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.