Alert archive / Minnesota / Tornado Watches in 1998
Tornado Watch 785
The Storm Prediction Center issued this tornado watch at Aug 22, 1998, 7:30 PM CDT for 28 counties in Minnesota; 14 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 22, 1998, 7:30 PM CDT (00:30 UTC)
- Expired
- Aug 23, 1998, 1:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 42 counties
Anoka County, MN, Blue Earth County, MN, Carver 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, 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, Sibley County, MN, Steele County, MN, Wabasha County, MN, Waseca County, MN, Washington County, MN, Winona County, MN, Wright County, MN, 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, Saint Croix County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 22, 7:30 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin | 65 min |
| Aug 22, 7:57 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 63 min |
| Aug 22, 8:10 PM CDT | Tornado Warning | MPX | Dakota, Scott | 30 min |
| Aug 22, 8:35 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Ramsey, Washington | 45 min |
| Aug 22, 8:35 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 45 min |
| Aug 22, 8:40 PM CDT | Tornado Warning | MPX | Dakota | 65 min |
| Aug 22, 9:14 PM CDT | Flash Flood Warning | MPX | Carver, Dakota, Hennepin, Scott | 2 hr |
| Aug 22, 9:19 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 51 min |
| Aug 22, 9:27 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Scott | 63 min |
| Aug 22, 9:51 PM CDT | Flash Flood Warning | MPX | Scott | 69 min |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.5 hours before the alert went out and 59 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
- 2973 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 823 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 255 m²/s²
- 0-3 km storm-relative helicity
- 351 m²/s²
- Significant tornado parameter
- 4.3
- Supercell composite
- 21.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 3:15 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calumet, Columbia, Crawford, Dane and 30 more | 6 hr |
Nearby
Tornado Watches in Minnesota, 1998Tornado Watches in Wisconsin, 1998Every tornado watch in 1998
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.