Alert archive / Montana / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 71, NWS Billings, MT

July 27, 20164 counties in Montana

NWS Billings, MT issued this severe thunderstorm warning at Jul 27, 2016, 5:13 PM MDT for 4 counties in Montana. It was in force for 47 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 27, 2016, 5:13 PM MDT (23:13 UTC)
Expired: Jul 27, 2016, 6:00 PM MDT
In force: 47 min
Issued by: NWS Billings, MT
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Golden Valley County, MT, Musselshell County, MT, Stillwater County, MT, Yellowstone County, MT

The radar

The Billings radar (KBLX), 34 km from the middle of the area, began a volume at 23:16 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

Riverton, WY (KRIW), launched 12:00Z, 11.2 hours before the alert went out and 341 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 23 J/kg
Mixed-layer CIN: -281 J/kg
Mixed-layer LCL: 2318 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 234 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 Jul 27, 2:43 PM MDT, 2 hours 30 minutes earlier.

Area forecast discussion, Jul 27, 2:43 PM MDT, 2 hours 30 minutes before

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Hazardous weather outlook, Jul 27, 2:59 PM MDT, 2 hours 14 minutes before

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In the hours before

Special weather statement, Jul 27, 3:10 PM MDT, 2 hours 3 minutes before

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Local storm report, Jul 27, 3:37 PM MDT, 1 hour 36 minutes before

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Local storm report, Jul 27, 3:55 PM MDT, 1 hour 18 minutes before

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Special weather statement, Jul 27, 4:01 PM MDT, 1 hour 12 minutes before

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Local storm report, Jul 27, 4:15 PM MDT, 58 minutes before

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Special weather statement, Jul 27, 4:34 PM MDT, 39 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 6:42 PM MDT	Special Weather Statement	BYZ	Stillwater	63 min
Jul 26, 8:19 PM MDT	Special Weather Statement	BYZ	Yellowstone	56 min
Jul 26, 8:53 PM MDT	Special Weather Statement	BYZ	Big Horn	52 min
Jul 26, 9:48 PM MDT	Special Weather Statement	BYZ	Treasure	42 min
Jul 26, 10:34 PM MDT	Special Weather Statement	BYZ	Big Horn	56 min
Jul 27, 1:42 PM MDT	Special Weather Statement	BYZ	Musselshell	48 min
Jul 27, 2:19 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	26 min
Jul 27, 2:47 PM MDT	Special Weather Statement	BYZ	Yellowstone	58 min
Jul 27, 3:01 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	59 min
Jul 27, 3:10 PM MDT	Special Weather Statement	BYZ	Stillwater	65 min
Jul 27, 3:39 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn	37 min
Jul 27, 4:01 PM MDT	Special Weather Statement	BYZ	Yellowstone	59 min
Jul 27, 4:15 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon, Stillwater, Yellowstone	37 min
Jul 27, 4:34 PM MDT	Special Weather Statement	BYZ	Golden Valley	56 min
Jul 27, 5:43 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	46 min

Nearby

Severe Thunderstorm Warnings in Montana, 2016 Every severe thunderstorm warning in 2016

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.