Alert archive / Wyoming / Mesoscale Discussions in 2006

Mesoscale Discussion 1127

June 10, 2006Powder River County, Montana; Custer County, South Dakota; Campbell County, Crook County, Weston County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Jun 10, 2006, 12:54 PM MDT for Powder River County, Montana; Custer County, South Dakota; Campbell County, Crook County, Weston County, Wyoming. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jun 10, 2006, 12:54 PM MDT (18:54 UTC)
Expired
Jun 10, 2006, 3:00 PM MDT
In force
2 hr
Issued by
the Storm Prediction Center

Counties Powder River County, MT, Custer County, SD, Campbell County, WY, Crook County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 196 km from the middle of the area, began a volume at 18:54 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

Rapid City, SD (KUNR), launched 12:00Z, 6.9 hours before the alert went out and 194 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 2006-06-10Temperature 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 2006-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 square meters per square second.1939Sfc1 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
549 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 9, 7:58 PM MDTMesoscale DiscussionSPCAurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 11 more62 min
Jun 10, 1:46 PM MDTSevere Thunderstorm WatchSPCBennett7 hr
Jun 10, 11:14 AM MDTMesoscale DiscussionSPCGoshen, Laramie, Platte2 hr
Jun 10, 12:10 PM MDTSevere Thunderstorm WatchSPCGoshen, Laramie, Niobrara, Platte7 hr

Nearby

Mesoscale Discussions in Wyoming, 2006Mesoscale Discussions in Montana, 2006Mesoscale Discussions in South Dakota, 2006Every mesoscale discussion in 2006

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.