Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 24, NWS Twin Cities, MN

March 29, 1998Goodhue County, Minnesota; Pierce County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at Mar 29, 1998, 7:07 PM CST for Goodhue County, Minnesota; Pierce County, Wisconsin. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 29, 1998, 7:07 PM CST (01:07 UTC)
Expired: Mar 29, 1998, 8:10 PM CST
In force: 63 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Goodhue County, MN, Pierce County, WI

The radar

The Minneapolis radar (KMPX), 85 km from the middle of the area, began a volume at 01:10 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 29, 2:00 PM CST	Tornado Watch	SPC	6 hr
Mar 29, 3:15 PM CST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.1 hours before the alert went out and 87 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 625 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 529 m above ground
0-6 km bulk shear: 79 kt
0-1 km storm-relative helicity: 499 m²/s²
0-3 km storm-relative helicity: 565 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

956 
WUUS1 KMSP 300110 RRA
SVRMSP
MNC049-WIC093-300210-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
707 PM CST SUN MAR 29 1998


* SEVERE THUNDERSTORM WARNING FOR
  GOODHUE COUNTY - SOUTHEASTERN MINNESOTA
  PIERCE COUNTY - WEST CENTRAL WISCONSIN

* UNTIL 810 PM CST

* SOME LOCATIONS AFFECTED
    RED WING
    ELLSWORTH
    GOODHUE
    PLUM CITY
    ZUMBROTA

* AT 708 PM CST DOPPLER RADAR INDICATED A LINE OF SEVERE STORMS FROM
  NEAR CANNON FALLS TO RIVER FALLS OR ABOUT 5 MILES WEST OF RED
  WING.  THE STORMS WERE MOVING EAST AT 25 MPH.  THESE STORMS HAVE
  A HISTORY OF PRODUCING ONE HALF INCH HAIL AND TORNADOES EARLIER
  THIS EVENING IN CENTRAL MINNESOTA.

LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THESE STORMS.
STAY INDOORS AWAY FROM WINDOWS.

MBK

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 29, 6:08 PM CST	Severe Thunderstorm Warning	MPX	Scott	52 min
Mar 29, 6:08 PM CST	Tornado Warning	MPX	Le Sueur, Rice	57 min
Mar 29, 6:25 PM CST	Tornado Warning	MPX	Dakota	50 min
Mar 29, 7:45 PM CST	Severe Thunderstorm Warning	MPX	Blue Earth, Waseca	45 min
Mar 29, 6:37 PM CST	Tornado Warning	MPX	Eau Claire	53 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1998 Severe Thunderstorm Warnings in Wisconsin, 1998 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.