Alert archive / Minnesota / Tornado Warnings in 1998

Tornado Warning 28, NWS Twin Cities, MN

June 18, 1998Kandiyohi County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 18, 1998, 4:18 PM CDT for Kandiyohi County, Minnesota. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 18, 1998, 4:18 PM CDT (21:18 UTC)
Expired: Jun 18, 1998, 5:05 PM CDT
In force: 47 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Kandiyohi County, MN

The radar

The Minneapolis radar (KMPX), 118 km from the middle of the area, began a volume at 21:19 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.

What was reported inside it

Time	Report	Where	Remark
Jun 18, 4:50 PM CDT	Hail 0.75	Willmar, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.3 hours before the alert went out and 115 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: 430 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 666 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: -22 m²/s²
0-3 km storm-relative helicity: -35 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

299 
WFUS1 KMSP 182119 RRA
TORMSP
MNC067-182205-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
418 PM CDT THU JUN 18 1998

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES/CHANHASSEN HAS
ISSUED A

* TORNADO WARNING FOR...
  KANDIYOHI COUNTY IN CENTRAL MINNESOTA

* UNTIL 505 PM CDT

* AT 413PM CDT...DOPPLER RADAR DETECTED A POSSIBLE TORNADO NEAR
  OLIVIA...20 MILES SOUTH OF WILLMAR.  THE STORM WAS MOVING MOVING
  NORTH AT 30 MPH. THE ROOF HAS BEEN TAKEN OFF A BUILDING NEAR
  OLIVA BY A POSSIBLE TORNADO.

* SOME LOCATIONS AFFECTED
    BLOMKEST
    ROSELAND
    WILLMAR
    SPICER

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR

CME


&

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 2:32 AM CDT	Severe Thunderstorm Warning	MPX	Redwood	48 min
Jun 18, 11:36 AM CDT	Severe Thunderstorm Warning	MPX	Faribault	34 min
Jun 18, 1:20 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod	30 min
Jun 18, 2:38 PM CDT	Tornado Warning	MPX	Morrison	37 min
Jun 18, 3:39 PM CDT	Tornado Warning	MPX	Chippewa, Kandiyohi, Swift	31 min
Jun 18, 3:59 PM CDT	Tornado Warning	MPX	Redwood, Renville	46 min
Jun 18, 4:25 PM CDT	Tornado Warning	MPX	Pope, Stevens	50 min
Jun 18, 4:44 PM CDT	Tornado Warning	MPX	Renville	46 min
Jun 18, 5:16 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker	49 min

Nearby

Tornado Warnings in Minnesota, 1998 Every tornado warning in 1998 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.