Alert archive / Montana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 101, NWS Billings, MT

July 22, 2014Custer County, Fallon County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jul 22, 2014, 4:36 PM MDT for Custer County, Fallon County, Montana. It was in force for 43 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 22, 2014, 4:36 PM MDT (22:36 UTC)
Expired: Jul 22, 2014, 5:19 PM MDT
In force: 43 min
Issued by: NWS Billings, MT
Area: Storm-based polygon

Counties Custer County, MT, Fallon County, MT

The radar

The Glasgow radar (KGGW), 246 km from the middle of the area, began a volume at 22:39 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
Jul 22, 2:57 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 10.6 hours before the alert went out and 298 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: 118 J/kg
Mixed-layer CIN: -369 J/kg
Mixed-layer LCL: 1931 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: -3 m²/s²
0-3 km storm-relative helicity: 94 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 22, 3:14 PM MDT, 1 hour 22 minutes earlier.

Area forecast discussion, Jul 22, 3:14 PM MDT, 1 hour 22 minutes before

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Hazardous weather outlook, Jul 22, 3:04 PM MDT, 1 hour 32 minutes before

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In the hours before

Special weather statement, Jul 22, 2:13 PM MDT, 2 hours 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
213 PM MDT TUE JUL 22 2014

MTZ031-032-222045-
CUSTER MT-NORTHERN ROSEBUD MT-
213 PM MDT TUE JUL 22 2014

...SIGNIFICANT WEATHER ADVISORY...

AT 212 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
HILLSIDE...OR 37 MILES NORTHWEST OF MILES CITY...MOVING NORTHEAST AT
20 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
ROCK SPRINGS.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4683 10585 4672 10636 4673 10641 4683 10651
      4684 10649 4685 10638 4685 10609 4686 10608
      4686 10583
TIME...MOT...LOC 2012Z 231DEG 21KT 4682 10637

TESAR

Local storm report, Jul 22, 2:42 PM MDT, 1 hour 54 minutes before

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Local storm report, Jul 22, 3:06 PM MDT, 1 hour 30 minutes before

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Special weather statement, Jul 22, 3:09 PM MDT, 1 hour 27 minutes before

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Special weather statement, Jul 22, 3:56 PM MDT, 40 minutes before

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Local storm report, Jul 22, 4:20 PM MDT, 16 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 22, 1:20 PM MDT	Special Weather Statement	BYZ		40 min
Jul 22, 1:27 PM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	28 min
Jul 22, 2:13 PM MDT	Special Weather Statement	BYZ	Prairie	32 min
Jul 22, 2:19 PM MDT	Severe Thunderstorm Warning	BYZ	Custer, Rosebud	26 min
Jul 22, 2:46 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	44 min
Jul 22, 3:09 PM MDT	Special Weather Statement	BYZ	Powder River	51 min
Jul 22, 3:10 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	65 min
Jul 22, 3:40 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	65 min
Jul 22, 3:56 PM MDT	Special Weather Statement	BYZ	Fallon	34 min
Jul 22, 3:58 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	62 min
Jul 22, 4:02 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	43 min
Jul 22, 4:03 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	57 min
Jul 22, 4:04 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	56 min
Jul 22, 4:26 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	49 min
Jul 22, 4:44 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	61 min
Jul 22, 4:59 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Fallon	61 min
Jul 22, 5:02 PM MDT	Special Weather Statement	BYZ	Sweet Grass	58 min
Jul 22, 5:17 PM MDT	Special Weather Statement	BYZ	Fallon	43 min
Jul 22, 5:20 PM MDT	Severe Thunderstorm Warning	BYZ	Stillwater, Sweet Grass	55 min
Jul 22, 5:29 PM MDT	Severe Thunderstorm Warning	BYZ	Carter, Fallon	31 min
Jul 22, 5:44 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	31 min
Jul 22, 5:54 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon, Stillwater	66 min
Jul 21, 7:21 PM MDT	Special Weather Statement	BYZ	Sheridan	39 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.