Alert archive / Minnesota / Mesoscale Discussions in 2005

Mesoscale Discussion 781

May 8, 20055 states

The Storm Prediction Center issued this mesoscale discussion at May 8, 2005, 5:27 PM CDT for 5 states. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued
May 8, 2005, 5:27 PM CDT (22:27 UTC)
Expired
May 8, 2005, 6:30 PM CDT
In force
63 min
Issued by
the Storm Prediction Center
All 108 counties

Buena Vista County, IA, Cherokee County, IA, Clay County, IA, Crawford County, IA, Dickinson County, IA, Emmet County, IA, Ida County, IA, Kossuth County, IA, Lyon County, IA, Monona County, IA, O'Brien County, IA, Osceola County, IA, Palo Alto County, IA, Plymouth County, IA, Pocahontas County, IA, Sac County, IA, Sioux County, IA, Woodbury County, IA, Becker County, MN, Beltrami County, MN, Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Cass County, MN, Chippewa County, MN, Clay County, MN, Clearwater County, MN, Cottonwood County, MN, Crow Wing County, MN, Douglas County, MN, Faribault County, MN, Grant County, MN, Hennepin County, MN, Hubbard County, MN, Jackson County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, Mahnomen County, MN, Marshall County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Norman County, MN, Otter Tail County, MN, Pennington County, MN, Pipestone County, MN, Polk County, MN, Pope County, MN, Red Lake County, MN, Redwood County, MN, Renville County, MN, Rock County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Watonwan County, MN, Wilkin County, MN, Wright County, MN, Yellow Medicine County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, LaMoure County, ND, Nelson County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Traill County, ND, Walsh County, ND, Wells County, ND, Dakota County, NE, Dixon County, NE, Thurston County, NE, Brookings County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Lincoln County, SD, Marshall County, SD, Moody County, SD, Roberts County, SD, Union County, SD

The radar

The Aberdeen radar (KABR), 140 km from the middle of the area, began a volume at 22:27 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

Aberdeen, SD (KABR), launched 12:00Z, 10.5 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, Aberdeen, SD at 12:00Z on 2005-05-08Temperature 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 2005-05-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 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
1864 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
91 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
May 7, 7:34 PM CDTMesoscale DiscussionSPCCherokee, Ida, Lyon, Monona, O'Brien, Osceola and 3 more116 min
May 7, 7:55 PM CDTSevere Thunderstorm WatchSPCLyon, Plymouth, Sioux6 hr
May 7, 11:07 PM CDTMesoscale DiscussionSPCDickinson, Lyon, O'Brien, Osceola, Plymouth, Sioux83 min
May 8, 1:10 PM CDTMesoscale DiscussionSPCLyon, Sioux3 hr
May 8, 1:50 PM CDTTornado WatchSPCBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 6 more7 hr
May 8, 2:30 PM CDTSevere Thunderstorm WatchSPCAudubon, Carroll, Crawford, Fremont, Harrison, Mills and 5 more7 hr
May 8, 3:05 PM CDTMesoscale DiscussionSPCBlack Hawk, Boone, Bremer, Butler, Calhoun, Cerro Gordo and 28 more85 min
May 8, 5:30 PM CDTSevere Thunderstorm WatchSPCCalhoun, Emmet, Franklin, Hamilton, Hancock, Hardin and 7 more8 hr
May 8, 3:50 PM CDTTornado WatchSPCBecker, Beltrami, Clearwater, Kittson, Lake of the Woods, Mahnomen and 6 more5 hr
May 7, 8:36 PM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Buffalo, Butler, Cedar and 26 more114 min
May 8, 2:11 PM CDTMesoscale DiscussionSPCButler, Cass, Colfax, Dodge, Douglas, Gage and 11 more64 min
May 8, 6:02 PM CDTMesoscale DiscussionSPCPawnee118 min
May 7, 9:37 PM CDTMesoscale DiscussionSPCBarnes, Benson, Burleigh, Cass, Eddy, Foster and 13 more53 min

Nearby

Mesoscale Discussions in Minnesota, 2005Mesoscale Discussions in North Dakota, 2005Mesoscale Discussions in Iowa, 2005Every mesoscale discussion in 2005

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.