Alert archive / Minnesota / Tornado Watches in 1998
Tornado Watch 470
The Storm Prediction Center issued this tornado watch at May 30, 1998, 10:00 PM CDT for 36 counties in Minnesota; Minnehaha County, South Dakota; 12 counties in Wisconsin. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 30, 1998, 10:00 PM CDT (03:00 UTC)
- Expired
- May 31, 1998, 4:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 49 counties
Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Cottonwood County, MN, Dakota County, MN, Dodge County, MN, Faribault County, MN, Freeborn County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Jackson County, MN, Kanabec County, MN, Le Sueur County, MN, Martin County, MN, McLeod County, MN, Meeker County, MN, Murray County, MN, Nicollet County, MN, Nobles County, MN, Pipestone County, MN, Ramsey County, MN, Redwood County, MN, Renville County, MN, Rice County, MN, Rock County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Steele County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Minnehaha County, SD, Barron County, WI, Burnett County, WI, Chippewa County, WI, Dunn County, WI, Pepin County, WI, Pierce County, WI, Polk County, WI, Price County, WI, Rusk County, WI, Saint Croix County, WI, Sawyer County, WI, Washburn County, WI
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 10:01 PM CDT | Severe Thunderstorm Warning | FSD | Rock | 34 min |
| May 30, 10:23 PM CDT | Severe Thunderstorm Warning | MPX | Carver | 37 min |
| May 30, 10:28 PM CDT | Severe Thunderstorm Warning | FSD | Nobles | 32 min |
| May 30, 10:31 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin | 44 min |
| May 30, 10:34 PM CDT | Severe Thunderstorm Warning | MPX | Hennepin, Scott | 51 min |
| May 30, 10:39 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Ramsey, Washington | 46 min |
| May 30, 10:54 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 46 min |
| May 30, 10:54 PM CDT | Severe Thunderstorm Warning | MPX | Pierce, Saint Croix | 46 min |
| May 30, 11:05 PM CDT | Severe Thunderstorm Warning | MPX | Rice, Steele, Waseca | 40 min |
| May 30, 11:05 PM CDT | Severe Thunderstorm Warning | MPX | Goodhue | 40 min |
| May 30, 11:18 PM CDT | Severe Thunderstorm Warning | MPX | Dunn, Pepin | 42 min |
| May 30, 11:22 PM CDT | Severe Thunderstorm Warning | ARX | Dodge | 63 min |
| May 30, 11:29 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn | 31 min |
| May 30, 11:35 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 55 min |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 3.0 hours before the alert went out and 48 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
- 1397 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1452 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 349 m²/s²
- 0-3 km storm-relative helicity
- 357 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.6
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 |
|---|---|---|---|---|
| May 30, 8:30 PM CDT | Tornado Watch | SPC | Faribault, Jackson, Martin, Nobles, Rock | 7 hr |
| May 30, 11:30 PM CDT | Severe Thunderstorm Watch | SPC | Dodge, Fillmore, Freeborn, Houston, Mower, Olmsted and 2 more | 6 hr |
| May 31, 12:00 AM CDT | Tornado Watch | SPC | Crawford, Grant | 5 hr |
| May 31, 1:00 AM CDT | Tornado Watch | SPC | Adams, Brown, Calumet, Columbia, Dane, Dodge and 27 more | 5 hr |
Nearby
Tornado Watches in Minnesota, 1998Tornado Watches in Wisconsin, 1998Tornado Watches in South Dakota, 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.