Alert archive / Minnesota / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 722
The Storm Prediction Center issued this severe thunderstorm watch at Aug 8, 2004, 5:20 PM CDT for 27 counties in Minnesota; 16 counties in Wisconsin. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 8, 2004, 5:20 PM CDT (22:20 UTC)
- Expired
- Aug 9, 2004, 12:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 43 counties
Anoka County, MN, Benton County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Hennepin County, MN, Isanti County, MN, Kanabec County, MN, Kandiyohi County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Mille Lacs County, MN, Morrison County, MN, Nicollet County, MN, Pine 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, Washington County, MN, Wright County, MN, Ashland County, WI, Barron County, WI, Burnett County, WI, Chippewa County, WI, Dunn County, WI, Eau Claire County, WI, Iron County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Taylor County, WI, Washburn County, WI
The radar
The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 22:22 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 5:35 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Sherburne | 55 min |
| Aug 8, 5:40 PM CDT | Tornado Warning | MPX | Chippewa, Dunn | 35 min |
| Aug 8, 5:42 PM CDT | Tornado Warning | MPX | Anoka, Isanti, Sherburne | 63 min |
| Aug 8, 6:22 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 53 min |
| Aug 8, 6:36 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 54 min |
| Aug 8, 6:44 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Rusk | 61 min |
| Aug 8, 7:06 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 54 min |
| Aug 8, 7:23 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 22 min |
| Aug 8, 7:29 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 46 min |
| Aug 8, 7:37 PM CDT | Tornado Warning | MPX | Saint Croix | 38 min |
| Aug 8, 8:30 PM CDT | Severe Thunderstorm Warning | DLH | Pine | 30 min |
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, 10.3 hours before the alert went out and 72 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.
- Mixed-layer CAPE
- 362 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1170 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 12:17 PM CDT | Mesoscale Discussion | SPC | Anoka, Blue Earth, Carver, Dakota, Dodge, Faribault and 19 more | 58 min |
| Aug 8, 12:37 PM CDT | Mesoscale Discussion | SPC | Becker, Clay, Douglas, Grant, Kittson, Mahnomen and 8 more | 83 min |
| Aug 8, 12:55 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Clay, Kittson, Mahnomen, Marshall, Norman and 5 more | 5 hr |
| Aug 8, 4:02 PM CDT | Mesoscale Discussion | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Hubbard and 11 more | 88 min |
| Aug 8, 4:35 PM CDT | Severe Thunderstorm Watch | SPC | Becker, Beltrami, Cass, Clay, Clearwater, Crow Wing and 17 more | 5 hr |
| Aug 8, 5:03 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Blue Earth, Carver, Chisago, Dakota and 31 more | 117 min |
Nearby
Severe Thunderstorm Watches in Minnesota, 2004Severe Thunderstorm Watches in Wisconsin, 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.