Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 336, NWS Twin Cities, MN

October 14, 1998Nicollet County, Renville County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Oct 14, 1998, 3:03 PM CDT for Nicollet County, Renville County, Sibley County, Minnesota. It was in force for 32 min. 3 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: Oct 14, 1998, 3:03 PM CDT (20:03 UTC)
Expired: Oct 14, 1998, 3:35 PM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Nicollet County, MN, Renville County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 79 km from the middle of the area, began a volume at 19:56 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
Oct 14, 3:08 PM CDT	Hail 0.75	St George, MN
Oct 14, 3:15 PM CDT	Hail 0.75	Gibbon, MN
Oct 14, 3:40 PM CDT	Hail 0.75	Fairfax, 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, 8.1 hours before the alert went out and 77 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 834 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 213 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.

427 
WUUS1 KMSP 142005 RRA
SVRMSP
MNC103-129-143-142035-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
303 PM CDT WED OCT 14 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  EXTREME NORTHWESTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA
  EXTREME SOUTHEASTERN RENVILLE COUNTY IN CENTRAL MINNESOTA
  WESTERN SIBLEY COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 335 PM CDT

* AT 302 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
  HAIL 10 MILES SOUTH OF FAIRFAX...OR ABOUT 20 MILES NORTHWEST OF
  NEW ULM.  THE STORM WAS MOVING NORTHEAST AT 30 MPH.  HAIL THE
  SIZE OF QUARTERS OR HALF DOLLARS IS POSSIBLE.

* SOME LOCATIONS AFFECTED
    FORT RIDGELY
    RURAL AREAS SOUTHWEST OF GIBBON
    RURAL AREAS SOUTHEAST OF FAIRFAX

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


KRAUSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 14, 2:25 PM CDT	Severe Thunderstorm Warning	MPX	Brown	25 min
Oct 14, 2:37 PM CDT	Severe Thunderstorm Warning	MPX	Martin	28 min
Oct 14, 2:47 PM CDT	Severe Thunderstorm Warning	MPX	Brown	33 min
Oct 14, 3:09 PM CDT	Severe Thunderstorm Warning	MPX	McLeod	41 min
Oct 14, 3:16 PM CDT	Severe Thunderstorm Warning	MPX	Martin	49 min
Oct 14, 3:34 PM CDT	Severe Thunderstorm Warning	MPX	Renville, Sibley	41 min
Oct 14, 3:53 PM CDT	Severe Thunderstorm Warning	MPX	McLeod	37 min
Oct 14, 6:24 PM CDT	Severe Thunderstorm Warning	MPX	Watonwan	61 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.