Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 90, NWS Twin Cities, MN

May 27, 1998McLeod County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 27, 1998, 11:47 PM CDT for McLeod County, Minnesota. It was in force for 48 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: May 27, 1998, 11:47 PM CDT (04:47 UTC)
Expired: May 28, 1998, 12:35 AM CDT
In force: 48 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County McLeod County, MN

The radar

The Minneapolis radar (KMPX), 56 km from the middle of the area, began a volume at 04:50 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
May 28, 12:15 AM CDT	Hail 0.75	Brownton, MN
May 28, 12:30 AM CDT	Hail 1.75	Hutchinson, 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, 4.8 hours before the alert went out and 53 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: 181 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1846 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 193 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

313 
WUUS1 KMSP 280449 RRA
SVRMSP
MNC085-280535-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1147 PM CDT WED MAY 27 1998

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

* SEVERE THUNDERSTORM WARNING FOR...
  MCLEOD COUNTY IN CENTRAL MINNESOTA

* UNTIL 1235 AM CDT

* AT AT 1147 PM CDT...DOPPLER RADAR INDICATED A SEVERE STORM WITH
  LARGE HAIL 10 MILES SOUTH OF HUTCHINSON.  THE STORM WAS MOVING
  EAST AT 25 MPH.

* SOME LOCATIONS AFFECTED
    STEWART
    BROWNTOWN
    GLENCOE

THIS IS A DANGEROUS STORM...WITH LARGE HAIL.  STAY INDOORS AWAY
FROM WINDOWS.


TIPTON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 27, 11:38 PM CDT	Severe Thunderstorm Warning	MPX	Renville	32 min
May 27, 11:59 PM CDT	Severe Thunderstorm Warning	MPX	Carver	46 min
May 28, 12:36 AM CDT	Severe Thunderstorm Warning	MPX	McLeod	34 min
May 28, 12:46 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Scott	64 min
May 28, 12:50 AM CDT	Severe Thunderstorm Warning	MPX	Sibley	30 min
May 28, 12:56 AM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	64 min
May 28, 1:19 AM CDT	Severe Thunderstorm Warning	MPX	Dakota	46 min
May 28, 1:56 AM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Rice	64 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.