Alert archive / North Dakota / Mesoscale Discussions in 2012

Mesoscale Discussion 1474

July 15, 201216 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 15, 2012, 10:54 PM CDT for 16 counties in North Dakota. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued
Jul 15, 2012, 10:54 PM CDT (03:54 UTC)
Expired
Jul 16, 2012, 12:00 AM CDT
In force
66 min
Issued by
the Storm Prediction Center

Counties Benson County, ND, Bottineau County, ND, Burke County, ND, Cavalier County, ND, Eddy County, ND, McHenry County, ND, McLean County, ND, Mountrail County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Towner County, ND, Ward County, ND, Wells County, ND

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.9 hours before the alert went out and 184 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 2012-07-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1118 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 2012-07-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
1118 J/kg
Mixed-layer CIN
-60 J/kg
Mixed-layer LCL
2727 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
137 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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
Jul 15, 7:49 PM CDTMesoscale DiscussionSPCBenson, Bottineau, Burke, Cavalier, Eddy, McHenry and 10 more56 min
Jul 16, 3:07 PM CDTMesoscale DiscussionSPCAdams, Bowman, Emmons, Grant, Hettinger, Logan and 2 more113 min
Jul 16, 3:53 PM CDTSevere Thunderstorm WatchSPCAdams, Bowman, Emmons, Grant, Hettinger, Sioux and 1 more7 hr
Jul 16, 6:53 PM CDTMesoscale DiscussionSPCAdams, Bowman, Emmons, Grant, Hettinger, Sioux and 1 more67 min

Nearby

Mesoscale Discussions in North Dakota, 2012Every mesoscale discussion in 2012

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.