Alert archive / Minnesota / Mesoscale Discussions in 2004

Mesoscale Discussion 616

May 9, 200425 counties in Minnesota; Sargent County, North Dakota; 22 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at May 9, 2004, 2:00 PM CDT for 25 counties in Minnesota; Sargent County, North Dakota; 22 counties in South Dakota. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 9, 2004, 2:00 PM CDT (19:00 UTC)
Expired
May 9, 2004, 4:30 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
All 48 counties

Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Kandiyohi County, MN, Lac qui Parle County, MN, Le Sueur County, MN, Lincoln County, MN, Lyon County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Pope County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sibley County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Traverse County, MN, Waseca County, MN, Yellow Medicine County, MN, Sargent County, ND, Aurora County, SD, Beadle County, SD, Brookings County, SD, Brown County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Hanson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, McCook County, SD, Miner County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD

The radar

The Sioux Falls radar (KFSD), 114 km from the middle of the area, began a volume at 19:00 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, 7.0 hours before the alert went out and 110 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 2004-05-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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, Aberdeen, SD at 12:00Z on 2004-05-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 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
17 J/kg
Mixed-layer CIN
-338 J/kg
Mixed-layer LCL
2332 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
143 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 9, 2:30 PM CDTSevere Thunderstorm WatchSPCBenton, Brown, Chippewa, Cottonwood, Isanti, Kanabec and 22 more6 hr
May 9, 3:29 PM CDTMesoscale DiscussionSPCChisago, Dakota, Goodhue, Hennepin, Le Sueur, Ramsey and 4 more91 min
May 9, 3:55 PM CDTTornado WatchSPCAnoka, Blue Earth, Brown, Carver, Dakota, Dodge and 24 more5 hr
May 9, 4:46 PM CDTMesoscale DiscussionSPCHouston59 min
May 9, 5:38 PM CDTMesoscale DiscussionSPCAnoka, Blue Earth, Brown, Carver, Chisago, Cottonwood and 25 more2 hr
May 8, 7:16 PM CDTMesoscale DiscussionSPCBenson, Bottineau, Burke, Burleigh, Dickey, Emmons and 19 more119 min
May 8, 9:17 PM CDTMesoscale DiscussionSPCBarnes, Benson, Dickey, Eddy, Emmons, Foster and 15 more88 min
May 8, 7:15 PM CDTSevere Thunderstorm WatchSPCBrown, Buffalo, Campbell, Corson, Dewey, Edmunds and 20 more6 hr
May 9, 3:30 PM CDTSevere Thunderstorm WatchSPCClay, Union6 hr

Nearby

Mesoscale Discussions in Minnesota, 2004Mesoscale Discussions in South Dakota, 2004Mesoscale Discussions in North Dakota, 2004Every mesoscale discussion in 2004

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.