Alert archive / Minnesota / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 122
The Storm Prediction Center issued this severe thunderstorm watch at Apr 15, 2003, 5:35 PM CDT for 34 counties in Minnesota; 17 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 15, 2003, 5:35 PM CDT (22:35 UTC)
- Expired
- Apr 16, 2003, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Fillmore County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Houston County, MN, Isanti County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Mower County, MN, Nicollet County, MN, Olmsted County, MN, Ramsey County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Winona County, MN, Wright County, MN, Barron County, WI, Buffalo County, WI, Chippewa County, WI, Clark County, WI, Dunn County, WI, Eau Claire County, WI, Jackson County, WI, La Crosse County, WI, Monroe County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI
The radar
The Minneapolis radar (KMPX), 43 km from the middle of the area, began a volume at 22:38 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
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 5:44 PM CDT | Severe Thunderstorm Warning | MPX | Nicollet | 31 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.6 hours before the alert went out and 393 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
- 46 J/kg
- Mixed-layer CIN
- -629 J/kg
- Mixed-layer LCL
- 1745 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 124 m²/s²
- 0-3 km storm-relative helicity
- 122 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 |
|---|---|---|---|---|
| Apr 15, 4:07 PM CDT | Mesoscale Discussion | SPC | Anoka, Benton, Big Stone, Blue Earth, Brown, Carver and 42 more | 2 hr |
| Apr 15, 5:15 PM CDT | Severe Thunderstorm Watch | SPC | Cottonwood, Lincoln, Lyon, Murray, Nobles, Pipestone and 2 more | 6 hr |
| Apr 14, 9:47 PM CDT | Mesoscale Discussion | SPC | Florence, Forest, Iron, Oneida, Vilas | 3 hr |
| Apr 15, 2:53 PM CDT | Mesoscale Discussion | SPC | Brown, Calumet, Clark, Jackson, Kewaunee, Langlade and 13 more | 3 hr |
Nearby
Severe Thunderstorm Watches in Minnesota, 2003Severe Thunderstorm Watches in Wisconsin, 2003Every severe thunderstorm watch in 2003
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.