Alert archive / Minnesota / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 643

July 15, 200450 counties in Minnesota; 5 counties in North Dakota; 8 counties in South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jul 15, 2004, 6:00 PM CDT for 50 counties in Minnesota; 5 counties in North Dakota; 8 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jul 15, 2004, 6:00 PM CDT (23:00 UTC)
Expired
Jul 15, 2004, 11:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 63 counties

Aitkin County, MN, Anoka County, MN, Becker County, MN, Benton County, MN, Big Stone County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chippewa County, MN, Chisago County, MN, Clay County, MN, Crow Wing County, MN, Dakota County, MN, Dodge County, MN, Douglas County, MN, Grant County, MN, Hennepin County, MN, Isanti County, MN, Kanabec 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, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Otter Tail County, MN, Pope County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Stevens County, MN, Swift County, MN, Todd County, MN, Traverse County, MN, Wadena County, MN, Waseca County, MN, Washington County, MN, Wilkin County, MN, Wright County, MN, Yellow Medicine County, MN, Barnes County, ND, Cass County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Clark County, SD, Codington County, SD, Day County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Marshall County, SD, Roberts County, SD

The radar

The Aberdeen radar (KABR), 198 km from the middle of the area, began a volume at 23:00 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.

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.0 hours before the alert went out and 224 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, Minneapolis, MN at 12:00Z on 2004-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Minneapolis, MN at 12:00Z on 2004-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.1939587897Sfc1 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
1 J/kg
Mixed-layer CIN
-300 J/kg
Mixed-layer LCL
1370 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
136 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 15, 12:28 PM CDTMesoscale DiscussionSPCBeltrami, Cass, Clearwater, Hubbard, Itasca, Kittson and 8 more2 hr
Jul 15, 5:41 PM CDTMesoscale DiscussionSPCAnoka, Benton, Big Stone, Blue Earth, Brown, Carver and 44 more94 min
Jul 14, 9:39 PM CDTMesoscale DiscussionSPCAdams, Billings, Bowman, Burke, Divide, Dunn and 15 more96 min
Jul 14, 11:25 PM CDTSevere Thunderstorm WatchSPCAdams, Benson, Billings, Bottineau, Burke, Burleigh and 30 more6 hr
Jul 15, 2:37 AM CDTMesoscale DiscussionSPCBurleigh, Emmons, Grant, Kidder, Morton, Sheridan and 2 more53 min
Jul 14, 7:49 PM CDTMesoscale DiscussionSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 2 more86 min
Jul 14, 10:07 PM CDTMesoscale DiscussionSPCButte, Custer, Fall River, Harding, Lawrence, Meade and 2 more53 min
Jul 15, 9:32 AM CDTMesoscale DiscussionSPCClay, Hanson, Hutchinson, Lincoln, McCook, Minnehaha and 3 more118 min
Jul 15, 11:55 AM CDTMesoscale DiscussionSPCBon Homme, Charles Mix, Clay, Davison, Douglas, Hutchinson and 2 more2 hr
Jul 15, 2:03 PM CDTMesoscale DiscussionSPCAurora, Bon Homme, Brule, Buffalo, Charles Mix, Davison and 7 more2 hr
Jul 15, 3:00 PM CDTTornado WatchSPCBon Homme, Charles Mix, Clay, Douglas, Hutchinson, Lincoln and 3 more6 hr

Nearby

Severe Thunderstorm Watches in Minnesota, 2004Severe Thunderstorm Watches in South Dakota, 2004Severe Thunderstorm Watches in North Dakota, 2004Every severe thunderstorm watch 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.