Alert archive / Minnesota / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 159, NWS Twin Cities, MN

June 18, 1998Carver County, McLeod County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 18, 1998, 1:20 PM CDT for Carver County, McLeod County, Minnesota. It was in force for 30 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, 1:20 PM CDT (18:20 UTC)
Expired: Jun 18, 1998, 1:50 PM CDT
In force: 30 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Carver County, MN, McLeod County, MN

The radar

The Minneapolis radar (KMPX), 37 km from the middle of the area, began a volume at 18:20 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, 1:45 PM CDT	Thunderstorm Wind 50	New Germany, MN	Trees blown down. Estimated windspeed.

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, 6.3 hours before the alert went out and 35 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.

000 
TTAA00 KMSP 181821 RRA
SVRMSP
MNC085-019-181850-

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

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

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

* UNTIL 150 PM CDT

* AT 118PM CDT ...DOPPLER RADAR INDICATED A SEVERE STORM 10 MILES
  NORTH OF GAYLORD.  THE STORM WAS MOVING MOVING NORTHEAST AT 50
  MPH.


* SOME LOCATIONS AFFECTED
    GLENCOE
    PLATO
    YOUNG AMERICA
    LESTER PRAIRIE

DAMAGING WINDS AND LARGE HAIL ARE LIKELY.  GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.


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, 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, 4:18 PM CDT	Tornado Warning	MPX	Kandiyohi	47 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

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.