Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 207, NWS Twin Cities, MN

August 23, 1997Douglas County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 1997, 9:24 AM CDT for Douglas County, Todd County, Minnesota. It was in force for 51 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
Aug 23, 1997, 9:24 AM CDT (14:24 UTC)
Expired
Aug 23, 1997, 10:15 AM CDT
In force
51 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

Counties Douglas County, MN, Todd County, MN

What was reported inside it

TimeReportWhereRemark
Aug 23, 9:30 AM CDTHail 0.75Clotho, MN
Aug 23, 9:50 AM CDTHail 1Osakis, MNHail piled up in small drifts. Gardens and crops damaged by wind driven hail.
Aug 23, 9:55 AM CDTThunderstorm Wind 50Gutches Grove, MNLarge branches down on east side of Lake Osakis. 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, 2.4 hours before the alert went out and 178 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 1997-08-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1997-08-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 320 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
800 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
320 m²/s²
0-3 km storm-relative helicity
381 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 231424 RRA
SVRMSP
MNC041-153-231515-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
924 AM CDT SAT AUG 23 1997


* SEVERE THUNDERSTORM WARNING FOR
  EASTERN DOUGLAS COUNTY - WEST CENTRAL MINNESOTA
  CENTRAL AND SOUTHERN TODD COUNTY - CENTRAL MINNESOTA

* UNTIL 1015 AM CDT

* SOME LOCATIONS AFFECTED
    MILTONA
    CARLOS
    CLOTHO
    OSAKIS

* AT 923 AM CDT...DOPPLER RADAR INDICATED A SEVERE
  STORM WITH LARGE HAIL AND DAMAGING WINDS...FROM 5 MILES NORTH TO
  NORTHEAST OF MILTONA...OR ABOUT 20 MILES NORTH TO NORTHEAST OF
  ALEXANDRIA.  THE STORM WAS MOVING SOUTH-SOUTHEAST AT 45 MPH.

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

TDK

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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.