Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 163, NWS Twin Cities, MN

June 18, 1998Renville County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 1998, 7:48 PM CDT for Renville County, Minnesota. It was in force for 47 min. 2 reports 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, 7:48 PM CDT (00:48 UTC)
Expired: Jun 18, 1998, 8:35 PM CDT
In force: 47 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 00:49 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, 8:17 PM CDT	Hail 0.75	Olivia, MN
Jun 18, 8:45 PM CDT	Hail 1.75	Bird Island, 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 00:00Z, 0.8 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-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: 4 J/kg
Mixed-layer CIN: -278 J/kg
Mixed-layer LCL: 1924 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -39 m²/s²
0-3 km storm-relative helicity: -106 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.

821 
WUUS1 KMSP 190051 RRA
SVRMSP
MNC129-190135-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
748 PM CDT THU JUN 18 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN AND CENTRAL RENVILLE COUNTY IN CENTRAL MINNESOTA

* UNTIL 835 PM CDT

* AT 749 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
  HAIL 5 MILES NORTH OF REDWOOD FALLS.  THE STORM WAS MOVING NORTH
  AT 25 MPH.

* SOME LOCATIONS AFFECTED
    RENVILLE
    DANUBE
    OLIVIA

THIS IS A DANGEROUS STORM.  STAY INDOORS AWAY FROM WINDOWS.


TDK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 8:12 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	48 min
Jun 18, 8:16 PM CDT	Severe Thunderstorm Warning	MPX	Brown	64 min
Jun 18, 8:36 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Renville	64 min
Jun 18, 10:19 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Wright	46 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.