Alert archive / North Dakota / Mesoscale Discussions in 2014

Mesoscale Discussion 698

May 25, 20146 counties in North Dakota; 4 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 25, 2014, 2:35 PM CDT for 6 counties in North Dakota; 4 counties in South Dakota. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued
May 25, 2014, 2:35 PM CDT (19:35 UTC)
Expired
May 25, 2014, 4:00 PM CDT
In force
85 min
Issued by
the Storm Prediction Center
Chance of a watch
5%

Counties Barnes County, ND, Cass County, ND, LaMoure County, ND, McIntosh County, ND, Steele County, ND, Traill County, ND, Campbell County, SD, Dewey County, SD, McPherson County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 129 km from the middle of the area, began a volume at 19:35 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

Aberdeen, SD (KABR), launched 12:00Z, 7.6 hours before the alert went out and 189 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, Aberdeen, SD at 12:00Z on 2014-05-25Temperature 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, Aberdeen, SD at 12:00Z on 2014-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 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
1335 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
13 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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Nearby

Mesoscale Discussions in North Dakota, 2014Mesoscale Discussions in South Dakota, 2014Every mesoscale discussion in 2014

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.