Alert archive / Minnesota / Tornado Warnings in 1998

Tornado Warning 30, NWS Twin Cities, MN

June 18, 1998Renville County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 18, 1998, 4:44 PM CDT for Renville County, Minnesota. It was in force for 46 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
Jun 18, 1998, 4:44 PM CDT (21:44 UTC)
Expired
Jun 18, 1998, 5:30 PM CDT
In force
46 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Renville County, MN

The radar

The Minneapolis radar (KMPX), 110 km from the middle of the area, began a volume at 21:44 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.7 hours before the alert went out and 107 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 1998-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 430 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 1998-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

501 
WFUS1 KMSP 182147 RRA
TORMSP
MNC129-182230-

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

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

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

* UNTIL 530 PM CDT

* AT AT 444 PM...DOPPLER RADAR DETECTED A POSSIBLE TORNADO 10 MILES
  NORTHEAST OF REDWOOD FALLS...NORTH OF MORTON.  THE STORM WAS
  MOVING NORTH AT 25 MPH.

* SOME LOCATIONS AFFECTED
    OLIVIA
    BIRD ISLAND
    AND OPEN AREAS SOUTH OF OLIVIA

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

DWE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 2:32 AM CDTSevere Thunderstorm WarningMPXRedwood48 min
Jun 18, 11:36 AM CDTSevere Thunderstorm WarningMPXFaribault34 min
Jun 18, 1:20 PM CDTSevere Thunderstorm WarningMPXCarver, McLeod30 min
Jun 18, 2:38 PM CDTTornado WarningMPXMorrison37 min
Jun 18, 3:39 PM CDTTornado WarningMPXChippewa, Kandiyohi, Swift31 min
Jun 18, 3:59 PM CDTTornado WarningMPXRedwood, Renville46 min
Jun 18, 4:18 PM CDTTornado WarningMPXKandiyohi47 min
Jun 18, 4:25 PM CDTTornado WarningMPXPope, Stevens50 min
Jun 18, 5:16 PM CDTSevere Thunderstorm WarningMPXKandiyohi, Meeker49 min

Nearby

Tornado Warnings in Minnesota, 1998Every tornado warning in 1998Tornadoes 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.