Alert archive / Montana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 28, NWS Billings, MT

May 28, 2014Rosebud County, Montana

NWS Billings, MT issued this severe thunderstorm warning at May 28, 2014, 5:38 PM MDT for Rosebud County, Montana. It was in force for 67 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 28, 2014, 5:38 PM MDT (23:38 UTC)
Expired: May 28, 2014, 6:45 PM MDT
In force: 67 min
Issued by: NWS Billings, MT
Area: Storm-based polygon

County Rosebud County, MT

The radar

The Billings radar (KBLX), 151 km from the middle of the area, began a volume at 23:38 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 28, 2:47 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 11.6 hours before the alert went out and 324 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: 194 J/kg
Mixed-layer CIN: -319 J/kg
Mixed-layer LCL: 1098 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 May 28, 5:28 PM MDT, 10 minutes earlier.

Area forecast discussion, May 28, 5:28 PM MDT, 10 minutes before

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Hazardous weather outlook, May 28, 3:45 PM MDT, 1 hour 53 minutes before

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In the hours before

Special weather statement, May 28, 3:38 PM MDT, 2 hours before

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Special weather statement, May 28, 4:15 PM MDT, 1 hour 23 minutes before

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Special weather statement, May 28, 4:27 PM MDT, 1 hour 11 minutes before

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Local storm report, May 28, 4:50 PM MDT, 48 minutes before

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Special weather statement, May 28, 5:07 PM MDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
507 PM MDT WED MAY 28 2014

MTZ036-038-058-282345-
SOUTHERN ROSEBUD MT-POWDER RIVER MT-SOUTHERN BIG HORN MT-
507 PM MDT WED MAY 28 2014

...SIGNIFICANT WEATHER ADVISORY...

THUNDERSTORMS MOVING OFF THE BIG HORN MOUNTAINS WILL PRODUCE SHORT-
LIVED WIND GUSTS UP TO 50 MPH FROM SOUTHEASTERN BIG HORN COUNTY TO
SOUTHWESTERN POWDER RIVER COUNTY. BRIEF HEAVY RAIN AND OCCASIONAL
LIGHTNING CAN ALSO BE EXPECTED WITH THIS AREA OF SHOWERS AND
THUNDERSTORMS.

LOCATIONS IMPACTED INCLUDE...
DECKER...SAYLE...MOORHEAD...OTTER...QUIETUS AND TONGUE RIVER
RESERVOIR PK.

LAT...LON 4500 10723 4522 10717 4525 10574 4500 10566
      4499 10629
TIME...MOT...LOC 2304Z 239DEG 49KT 4510 10645

JKL

Special weather statement, May 28, 5:17 PM MDT, 21 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
May 27, 9:18 PM MDT	Special Weather Statement	BYZ	Wheatland	42 min
May 27, 10:16 PM MDT	Special Weather Statement	BYZ	Golden Valley	44 min
May 27, 10:21 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Musselshell	54 min
May 27, 11:13 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	62 min
May 28, 12:14 AM MDT	Severe Thunderstorm Warning	BYZ	Musselshell, Rosebud, Treasure, Yellowstone	61 min
May 28, 1:21 AM MDT	Special Weather Statement	BYZ	Treasure	39 min
May 28, 2:00 AM MDT	Special Weather Statement	BYZ	Rosebud	45 min
May 28, 2:24 AM MDT	Severe Thunderstorm Warning	BYZ	Custer, Rosebud	66 min
May 28, 3:38 PM MDT	Special Weather Statement	BYZ	Yellowstone	37 min
May 28, 4:27 PM MDT	Special Weather Statement	BYZ	Treasure	48 min
May 28, 4:31 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Treasure, Yellowstone	59 min
May 28, 5:17 PM MDT	Special Weather Statement	BYZ	Rosebud, Treasure	43 min
May 28, 2:10 PM MDT	Flood Watch	BYZ	Sheridan	23 hr
May 28, 4:15 PM MDT	Special Weather Statement	BYZ	Sheridan	60 min
May 28, 4:45 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	30 min
May 28, 5:07 PM MDT	Special Weather Statement	BYZ	Sheridan	38 min

Nearby

Severe Thunderstorm Warnings in Montana, 2014 Every severe thunderstorm warning in 2014

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.