Alert archive / Montana / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 59, NWS Billings, MT

June 13, 2014Powder River County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 13, 2014, 2:42 PM MDT for Powder River County, Montana. It was in force for 33 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
Jun 13, 2014, 2:42 PM MDT (20:42 UTC)
Expired
Jun 13, 2014, 3:15 PM MDT
In force
33 min
Issued by
NWS Billings, MT
Area
Storm-based polygon

County Powder River County, MT

The radar

The Billings radar (KBLX), 237 km from the middle of the area, began a volume at 20:44 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
Jun 13, 2:09 PM MDTSevere Thunderstorm WatchSPC9 hr

The nearest sounding before it

Rapid City, SD (KRAP), launched 12:00Z, 8.7 hours before the alert went out and 262 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, Rapid City, SD at 12:00Z on 2014-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Rapid City, SD at 12:00Z on 2014-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 178 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1333 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
178 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 13, 10:45 AM MDTSpecial Weather StatementBYZWheatland45 min
Jun 13, 3:15 PM MDTSevere Thunderstorm WarningBYZPowder River30 min
Jun 13, 3:55 PM MDTSpecial Weather StatementBYZPowder River35 min
Jun 13, 3:59 PM MDTSpecial Weather StatementBYZCarter46 min
Jun 13, 4:26 PM MDTSpecial Weather StatementBYZPowder River34 min
Jun 13, 4:43 PM MDTSpecial Weather StatementBYZCarter32 min
Jun 13, 5:00 PM MDTSpecial Weather StatementBYZCarter30 min
Jun 13, 5:37 PM MDTSpecial Weather StatementBYZFallon23 min
Jun 13, 3:27 PM MDTSpecial Weather StatementBYZSheridan48 min

Nearby

Severe Thunderstorm Warnings in Montana, 2014Every 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.