Alert archive / North Dakota / Mesoscale Discussions in 2006

Mesoscale Discussion 1003

May 27, 200623 counties in North Dakota; 10 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 27, 2006, 4:26 PM CDT for 23 counties in North Dakota; 10 counties in South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
May 27, 2006, 4:26 PM CDT (21:26 UTC)
Expired
May 27, 2006, 6:30 PM CDT
In force
2 hr
Issued by
the Storm Prediction Center
All 33 counties

Barnes County, ND, Benson County, ND, Burleigh County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, Morton County, ND, Nelson County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Sheridan County, ND, Sioux County, ND, Stutsman County, ND, Towner County, ND, Wells County, ND, Brown County, SD, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, McPherson County, SD, Potter County, SD, Sully County, SD, Walworth County, SD

The radar

The Bismarck radar (KBIS), 99 km from the middle of the area, began a volume at 21:27 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.4 hours before the alert went out and 95 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 2006-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 521 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 12:00Z on 2006-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 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
521 J/kg
Mixed-layer CIN
-598 J/kg
Mixed-layer LCL
1311 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

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 26, 7:49 PM CDTMesoscale DiscussionSPCAdams, Billings, Bottineau, Bowman, Burke, Burleigh and 18 more86 min
May 26, 10:35 PM CDTMesoscale DiscussionSPCBenson, Bottineau, Burleigh, Dunn, Eddy, Emmons and 20 more115 min
May 26, 11:25 PM CDTSevere Thunderstorm WatchSPCBenson, Billings, Bottineau, Burke, Burleigh, Cavalier and 24 more6 hr
May 27, 2:52 AM CDTMesoscale DiscussionSPCBenson, Billings, Bottineau, Burleigh, Cavalier, Dunn and 21 more113 min
May 27, 4:46 PM CDTTornado WatchSPCBenson, Bottineau, Burleigh, Cavalier, Dickey, Eddy and 26 more7 hr
May 27, 6:53 PM CDTMesoscale DiscussionSPCAdams, Bowman2 hr

Nearby

Mesoscale Discussions in North Dakota, 2006Mesoscale Discussions in South Dakota, 2006Every mesoscale discussion in 2006

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.