Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 225, NWS Twin Cities, MN

September 16, 1997McLeod County, Renville County, Sibley County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 16, 1997, 8:43 AM CDT for McLeod County, Renville County, Sibley County, Minnesota. It was in force for 47 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
Sep 16, 1997, 8:43 AM CDT (13:43 UTC)
Expired
Sep 16, 1997, 9:30 AM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties McLeod County, MN, Renville County, MN, Sibley County, MN

The radar

The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 13:44 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, 1.7 hours before the alert went out and 71 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 1997-09-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 565 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 1997-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 234 square meters per square second.19395878Sfc1 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
565 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
719 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
234 m²/s²
0-3 km storm-relative helicity
266 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 161345 RRA
SVRMSP
MNC085-129-143-161430-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
843 AM CDT TUE SEP 16 1997


* SEVERE THUNDERSTORM WARNING FOR
  WESTERN MCLEOD COUNTY - CENTRAL MINNESOTA
  EASTERN RENVILLE COUNTY - CENTRAL MINNESOTA
  WESTERN SIBLEY COUNTY - SOUTH CENTRAL MINNESOTA

* UNTIL 930 AM CDT

* SOME LOCATIONS AFFECTED
    FAIRFAX
    BUFFALO LAKE
    GIBBON
    STEWART

* AT 845 AM CDT DOPPLER RADAR INDICATED A LINE OF SEVERE STORMS
  WITH LARGE HAIL AND DAMAGING WINDS FROM BIRD ISLAND TO
  FRANKLIN...OR ABOUT 15 MILES NORTHEAST OF REDWOOD FALLS.  THE
  STORMS WERE MOVING EAST AT 35 MPH.

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


MILLER

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997Every severe thunderstorm warning in 1997

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.