Alert archive / North Dakota / Mesoscale Discussions in 2007

Mesoscale Discussion 1362

July 3, 20074 counties in Montana; 37 counties in North Dakota; Campbell County, Corson County, McPherson County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2007, 12:58 AM MDT for 4 counties in Montana; 37 counties in North Dakota; Campbell County, Corson County, McPherson County, South Dakota. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Jul 3, 2007, 12:58 AM MDT (06:58 UTC)
Expired
Jul 3, 2007, 3:00 AM MDT
In force
2 hr
Issued by
the Storm Prediction Center
All 44 counties

Dawson County, MT, Fallon County, MT, Prairie County, MT, Wibaux County, MT, Adams County, ND, Barnes County, ND, Benson County, ND, Billings County, ND, Bottineau County, ND, Bowman County, ND, Burleigh County, ND, Dickey County, ND, Dunn County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Golden Valley County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Mountrail County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Slope County, ND, Stark County, ND, Stutsman County, ND, Towner County, ND, Ward County, ND, Wells County, ND, Campbell County, SD, Corson County, SD, McPherson County, SD

The radar

The Bismarck radar (KBIS), 144 km from the middle of the area, began a volume at 06:58 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 00:00Z, 7.0 hours before the alert went out and 148 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 2007-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1417 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 2007-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 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
1417 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
1562 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
40 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

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 2, 6:25 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Carbon, Carter, Chouteau, Custer and 14 more2 hr
Jul 2, 6:45 PM MDTMesoscale DiscussionSPCDaniels, Dawson, Garfield, McCone, Petroleum, Phillips and 5 more90 min
Jul 2, 9:55 PM MDTMesoscale DiscussionSPCBenson, Billings, Bottineau, Burke, Burleigh, Divide and 22 more65 min
Jul 2, 10:13 PM MDTSevere Thunderstorm WatchSPCBillings, Bottineau, Burke, Divide, Dunn, Golden Valley and 13 more5 hr
Jul 3, 1:21 AM MDTSevere Thunderstorm WatchSPCAdams, Barnes, Benson, Bowman, Burleigh, Cass and 24 more7 hr
Jul 3, 4:41 AM MDTMesoscale DiscussionSPCAdams, Barnes, Bowman, Cass, Dickey, Emmons and 15 more2 hr
Jul 3, 5:39 AM MDTMesoscale DiscussionSPCRichland2 hr
Jul 2, 8:19 PM MDTMesoscale DiscussionSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 3 more86 min
Jul 3, 2:36 PM MDTMesoscale DiscussionSPCClay, Lincoln, Union, Yankton84 min
Jul 3, 2:59 PM MDTTornado WatchSPCBon Homme, Clay, Lincoln, Union, Yankton8 hr
Jul 3, 5:55 PM MDTMesoscale DiscussionSPCBon Homme, Clay, Lincoln, Union, Yankton95 min

Nearby

Mesoscale Discussions in North Dakota, 2007Mesoscale Discussions in Montana, 2007Mesoscale Discussions in South 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; radar from the NEXRAD Level II archive.