Alert archive / Minnesota / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 76, NWS Twin Cities, MN

July 1, 1997Lac qui Parle County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 1, 1997, 3:13 PM CDT for Lac qui Parle County, Minnesota. It was in force for 32 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: Jul 1, 1997, 3:13 PM CDT (20:13 UTC)
Expired: Jul 1, 1997, 3:45 PM CDT
In force: 32 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

County Lac qui Parle County, MN

The radar

The Sioux Falls radar (KFSD), 163 km from the middle of the area, began a volume at 20:15 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
Jul 1, 3:40 PM CDT	Hail 1	Providence, MN
Jul 1, 3:45 PM CDT	Thunderstorm Wind 55	Madison, MN	Barn blown down, killing one horse. Tree and shed damage. Approximately 8 miles of wind damage. Estimated windspeed.
Jul 1, 3:50 PM CDT	Hail 0.75	Dawson, MN	Large tree also sheared in half due to strong winds.

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.

Issued	Product	Office	Lasted
Jul 1, 3:00 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 8.2 hours before the alert went out and 176 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: 1327 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 1148 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 012015 RRA
SVRMSP
MNC073-012045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
313 PM CDT TUE JUL 1 1997

* SEVERE THUNDERSTORM WARNING FOR
  LAC QUI PARLE COUNTY - WEST CENTRAL MINNESOTA

* UNTIL 345 PM CDT
 
* SOME LOCATIONS AFFECTED
    MARIETTA
    BELLINGHAM
    MADISON

* AT 310 PM CDT DOPPLER RADAR INDICATED A SEVERE STORM WITH LARGE
  HAIL NEAR MARIETTA OR 50 MILES WEST OF MONT^EVIDEO.  THE STORM WAS
  MOVING NORTHEAST AT 30 MPH.

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

A TORNADO WATCH IS IN EFFECT.  SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES.

HOWIESON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 3:46 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Swift	44 min
Jul 1, 4:42 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Swift	63 min
Jul 1, 5:03 PM CDT	Severe Thunderstorm Warning	MPX	Renville	57 min
Jul 1, 5:04 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa	56 min
Jul 1, 5:17 PM CDT	Tornado Warning	MPX	Renville	43 min
Jul 1, 5:23 PM CDT	Tornado Warning	MPX	Chippewa, Kandiyohi	37 min
Jul 1, 5:34 PM CDT	Severe Thunderstorm Warning	MPX	Meeker	56 min
Jul 1, 6:01 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	29 min
Jul 1, 6:25 PM CDT	Severe Thunderstorm Warning	MPX	Renville	50 min
Jul 1, 6:28 PM CDT	Tornado Warning	MPX	Wright	32 min
Jul 1, 6:35 PM CDT	Severe Thunderstorm Warning	MPX	McLeod	55 min
Jul 1, 6:39 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	51 min
Jul 1, 6:39 PM CDT	Tornado Warning	MPX	Meeker	36 min
Jul 1, 6:46 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Sherburne	49 min
Jul 1, 6:55 PM CDT	Tornado Warning	MPX	Wright	35 min
Jul 1, 6:58 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Sibley	62 min
Jul 1, 6:58 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	62 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1997 Every 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; radar from the NEXRAD Level II archive.