Alert archive / North Dakota / Mesoscale Discussions in 2007

Mesoscale Discussion 1718

August 10, 2007Richland County, Sheridan County, Montana; 10 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 10, 2007, 9:08 PM MDT for Richland County, Sheridan County, Montana; 10 counties in North Dakota. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued
Aug 10, 2007, 9:08 PM MDT (03:08 UTC)
Expired
Aug 10, 2007, 10:15 PM MDT
In force
67 min
Issued by
the Storm Prediction Center

Counties Richland County, MT, Sheridan County, MT, Burke County, ND, Burleigh County, ND, Divide County, ND, McLean County, ND, Mountrail County, ND, Oliver County, ND, Renville County, ND, Sheridan County, ND, Ward County, ND, Williams County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.1 hours before the alert went out and 203 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, Bismarck Municip, ND at 00:00Z on 2007-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1851 joules per kilogram.LCLLFCEL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 2007-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 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
1851 J/kg
Mixed-layer CIN
-226 J/kg
Mixed-layer LCL
1543 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
267 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
Aug 10, 7:50 PM MDTMesoscale DiscussionSPCDickey, McIntosh55 min
Aug 10, 11:27 PM MDTMesoscale DiscussionSPCBottineau, McHenry, Pierce, Renville, Ward33 min
Aug 10, 11:58 PM MDTMesoscale DiscussionSPCDickey62 min
Aug 11, 1:37 AM MDTMesoscale DiscussionSPCBarnes, Benson, Burleigh, Cass, Dickey, Eddy and 23 more23 min

Nearby

Mesoscale Discussions in North Dakota, 2007Mesoscale Discussions in Montana, 2007Every mesoscale discussion in 2007

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.