Alert archive / North Dakota / Mesoscale Discussions in 2007

Mesoscale Discussion 908

May 28, 20079 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at May 28, 2007, 7:27 AM CDT for 9 counties in North Dakota. It was in force for 93 min.

The area

The outline as issued.

The facts

Issued
May 28, 2007, 7:27 AM CDT (12:27 UTC)
Expired
May 28, 2007, 9:00 AM CDT
In force
93 min
Issued by
the Storm Prediction Center

Counties Benson County, ND, Bottineau County, ND, McHenry County, ND, McLean County, ND, Pierce County, ND, Rolette County, ND, Sheridan County, ND, Ward County, ND, Wells County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 0.5 hours before the alert went out and 146 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 12:00Z on 2007-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2007-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 135 square meters per square second.193958Sfc1 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
562 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
135 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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
May 28, 3:17 PM CDTMesoscale DiscussionSPCBarnes, Benson, Cavalier, Dickey, Eddy, Foster and 14 more118 min
May 28, 4:35 PM CDTSevere Thunderstorm WatchSPCAdams, Burleigh, Dickey, Emmons, Foster, Grant and 7 more9 hr
May 28, 5:35 PM CDTTornado WatchSPCBarnes, Benson, Cass, Cavalier, Eddy, Grand Forks and 7 more4 hr

Nearby

Mesoscale Discussions in North Dakota, 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.