Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 174, NWS Twin Cities, MN

August 2, 1997Douglas County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 2, 1997, 5:52 PM CDT for Douglas County, Minnesota. It was in force for 53 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
Aug 2, 1997, 5:52 PM CDT (22:52 UTC)
Expired
Aug 2, 1997, 6:45 PM CDT
In force
53 min
Issued by
NWS Twin Cities, MN
Area
Whole counties

County Douglas County, MN

What was reported inside it

TimeReportWhereRemark
Aug 2, 6:10 PM CDTHail 0.75Melby, 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 2, 5:30 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.9 hours before the alert went out and 188 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 1997-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3 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 1997-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 44 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
3 J/kg
Mixed-layer CIN
-170 J/kg
Mixed-layer LCL
1768 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
44 m²/s²
0-3 km storm-relative helicity
57 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 022253 RRA
SVRMSP
MNC041-022345-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
552 PM CDT SAT AUG 2 1997

* SEVERE THUNDERSTORM WARNING FOR
  DOUGLAS COUNTY - WEST CENTRAL MINNESOTA

* UNTIL 645 PM CDT
 
* SOME LOCATIONS AFFECTED
    MELBY
    GARFIELD
    LEAF VALLEY
    ALEXANDRIA

* AT 550 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM 40 MILES
  WEST-NORTHWEST OF ALEXANDRIA...NEAR `ELBOW LAKE IN GRANT COUNTY.
  THE STORM WAS MOVING EAST AT 10 MPH.

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


MCBEATH PETERS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 6:29 PM CDTSevere Thunderstorm WarningMPXPope, Stevens61 min
Aug 2, 6:55 PM CDTSevere Thunderstorm WarningMPXIsanti, Mille Lacs65 min

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.