Alert archive / Minnesota / Tornado Warnings in 1997

Tornado Warning 16, NWS Twin Cities, MN

July 1, 1997Renville County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 1, 1997, 9:23 PM CDT for Renville County, Yellow Medicine County, Minnesota. It was in force for 27 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: Jul 1, 1997, 9:23 PM CDT (02:23 UTC)
Expired: Jul 1, 1997, 9:50 PM CDT
In force: 27 min
Issued by: NWS Twin Cities, MN
Area: Whole counties

Counties Renville County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 146 km from the middle of the area, began a volume at 02:25 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, 9:59 PM CDT	Tornado F0	Olivia, 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 nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.4 hours before the alert went out and 143 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: 1759 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1186 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 303 m²/s²
0-3 km storm-relative helicity: 455 m²/s²
Significant tornado parameter: 4.3
Supercell composite: 21.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMSP 020224 RRA
TORMSP
MNC129-173-020250-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
923 PM CDT TUE JUL 1 1997

* TORNADO WARNING FOR
  WESTERN RENVILLE COUNTY - SOUTH CENTRAL MINNESOTA
  EASTERN YELLOW MEDICINE COUNTY - SOUTHWESTERN MINNESOTA

* UNTIL 950 PM CDT
 
* SOME LOCATIONS AFFECTED
    GRANITE FALLS
    WOOD LAKE
    ECHO
    SACRED HEART

* AT 920 PM CDT SEVERE WEATHER SPOTTERS REPORTED A TORNADO JUST
  SOUTH OF GRANITE FALLS OR 25 MILES SOUTHEAST OF MONTEVIDEO.  THE
  STORM WAS MOVING EAST AT 40 MPH.

GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR!

HOWIESON

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 7:26 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti	64 min
Jul 1, 7:26 PM CDT	Severe Thunderstorm Warning	MPX	Ramsey	64 min
Jul 1, 7:33 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Wright	42 min
Jul 1, 7:53 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Sibley	37 min
Jul 1, 7:53 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	37 min
Jul 1, 7:56 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	64 min
Jul 1, 8:01 PM CDT	Tornado Warning	MPX	Anoka	29 min
Jul 1, 8:10 PM CDT	Severe Thunderstorm Warning	MPX	Chisago, Washington	50 min
Jul 1, 8:14 PM CDT	Tornado Warning	MPX	Isanti	46 min
Jul 1, 8:48 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	57 min
Jul 1, 8:56 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	34 min
Jul 1, 9:47 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	28 min
Jul 1, 9:51 PM CDT	Tornado Warning	MPX	Kandiyohi, Renville	29 min
Jul 1, 10:17 PM CDT	Tornado Warning	MPX	Meeker	43 min
Jul 1, 10:30 PM CDT	Severe Thunderstorm Warning	MPX	Washington	35 min
Jul 1, 11:43 PM CDT	Severe Thunderstorm Warning	MPX	Rice	32 min

Nearby

Tornado Warnings in Minnesota, 1997 Every tornado warning in 1997 Tornadoes 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.