Alert archive / North Dakota / Mesoscale Discussions in 2008

Mesoscale Discussion 1713

July 7, 200817 counties in Minnesota; 22 counties in North Dakota; Grant County, Marshall County, Roberts County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2008, 2:45 PM CDT for 17 counties in Minnesota; 22 counties in North Dakota; Grant County, Marshall County, Roberts County, South Dakota. It was in force for 60 min.

The area

The outline as issued.

The facts

Issued
Jul 7, 2008, 2:45 PM CDT (19:45 UTC)
Expired
Jul 7, 2008, 3:45 PM CDT
In force
60 min
Issued by
the Storm Prediction Center
All 42 counties

Becker County, MN, Big Stone County, MN, Clay County, MN, Douglas County, MN, Grant County, MN, Mahnomen County, MN, Norman County, MN, Otter Tail County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Wilkin County, MN, Barnes County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Grant County, SD, Marshall County, SD, Roberts County, SD

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, 7.8 hours before the alert went out and 222 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 2008-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 247 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 2008-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 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
247 J/kg
Mixed-layer CIN
-38 J/kg
Mixed-layer LCL
693 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
-43 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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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 6, 9:43 PM CDTMesoscale DiscussionSPCDodge, Goodhue, Le Sueur, Olmsted, Rice, Steele and 3 more92 min
Jul 7, 1:36 PM CDTMesoscale DiscussionSPCPipestone, Rock114 min
Jul 7, 1:51 PM CDTSevere Thunderstorm WatchSPCDodge, Faribault, Fillmore, Freeborn, Houston, Mower and 4 more7 hr
Jul 7, 3:14 PM CDTMesoscale DiscussionSPCFillmore, Houston, Mower, Olmsted, Winona91 min
Jul 7, 3:26 PM CDTSevere Thunderstorm WatchSPCClay, Grant, Norman, Otter Tail, Polk, Wilkin5 hr
Jul 7, 5:08 PM CDTMesoscale DiscussionSPCBecker, Clay, Kittson, Mahnomen, Marshall, Norman and 3 more67 min
Jul 7, 5:30 PM CDTTornado WatchSPCBecker, Clay, Kittson, Mahnomen, Marshall, Norman and 3 more3 hr
Jul 7, 5:55 PM CDTMesoscale DiscussionSPCFillmore, Houston, Mower, Winona95 min
Jul 6, 8:51 PM CDTMesoscale DiscussionSPCAdams, Billings, Burke, Dunn, Grant, Hettinger and 6 more54 min
Jul 6, 7:08 PM CDTMesoscale DiscussionSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 2 more67 min
Jul 6, 11:13 PM CDTMesoscale DiscussionSPCUnion2 hr

Nearby

Mesoscale Discussions in North Dakota, 2008Mesoscale Discussions in Minnesota, 2008Mesoscale Discussions in South Dakota, 2008Every mesoscale discussion in 2008

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.