Alert archive / North Dakota / Mesoscale Discussions in 2011

Mesoscale Discussion 1390

June 25, 20115 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2011, 10:47 PM CDT for 5 counties in North Dakota. It was in force for 88 min.

The area

The outline as issued.

The facts

Issued
Jun 25, 2011, 10:47 PM CDT (03:47 UTC)
Expired
Jun 26, 2011, 12:15 AM CDT
In force
88 min
Issued by
the Storm Prediction Center

Counties Emmons County, ND, Grand Forks County, ND, Griggs County, ND, Logan County, ND, Stutsman County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 105 km from the middle of the area, began a volume at 03:50 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 3.8 hours before the alert went out and 164 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 2011-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1619 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 2011-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
1619 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
1448 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.0

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 25, 8:01 PM CDTSevere Thunderstorm WatchSPCAdams, Benson, Burleigh, Cavalier, Eddy, Emmons and 22 more5 hr
Jun 26, 6:08 AM CDTMesoscale DiscussionSPCAdams, Sioux97 min
Jun 26, 12:35 PM CDTMesoscale DiscussionSPCCass, Dickey, Emmons, LaMoure, Logan, McIntosh and 1 more85 min

Nearby

Mesoscale Discussions in North Dakota, 2011Every mesoscale discussion in 2011

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.