Alert archive / Minnesota / Tornado Warnings in 2002

Tornado Warning 17, NWS Twin Cities, MN

July 28, 2002Nicollet County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jul 28, 2002, 5:41 PM CDT for Nicollet County, Minnesota. It was in force for 34 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 28, 2002, 5:41 PM CDT (22:41 UTC)
Expired: Jul 28, 2002, 6:15 PM CDT
In force: 34 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 74 km from the middle of the area, began a volume at 22:40 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 28, 5:50 PM CDT	Thunderstorm Wind 52 E	Bernadotte, MN	Few trees toppled. Corn and beans flattened.

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 28, 3:55 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.7 hours before the alert went out and 72 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: 1056 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 1511 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 110 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

980 
WFUS53 KMPX 282241
TORMSP
MNC103-282315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
540 PM CDT SUN JUL 28 2002

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA

* UNTIL 615 PM CDT

* AT 540 PM CDT...SEVERE WEATHER SPOTTERS REPORTED A TORNADO 3 MILES 
  EAST OF KLOSSEN...MOVING EAST AT 15 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO INCLUDE...
  LAFAYETTE.
  NEW SWEDEN.
  NORSELAND.
  BERNADOTTE.

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

LAT...LON 4445 9443 4431 9434 4436 9401 4446 9408

&

RAH/SEB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 3:39 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	51 min
Jul 28, 4:07 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur	38 min
Jul 28, 4:13 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	47 min
Jul 28, 4:17 PM CDT	Severe Thunderstorm Warning	MPX	Renville	58 min
Jul 28, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	32 min
Jul 28, 4:32 PM CDT	Severe Thunderstorm Warning	MPX	Rice	43 min
Jul 28, 4:58 PM CDT	Severe Thunderstorm Warning	MPX	Scott	47 min
Jul 28, 5:21 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Nicollet	54 min
Jul 28, 5:22 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	38 min
Jul 28, 5:43 PM CDT	Flash Flood Warning	MPX	McLeod, Sibley	2 hr
Jul 28, 5:43 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	47 min
Jul 28, 5:45 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	45 min
Jul 28, 5:46 PM CDT	Severe Thunderstorm Warning	MPX	Scott	44 min
Jul 28, 5:49 PM CDT	Tornado Warning	MPX	Goodhue	26 min
Jul 28, 6:06 PM CDT	Flash Flood Warning	MPX	Anoka, Carver, Dakota, Hennepin, Ramsey, Scott and 1 more	3 hr
Jul 28, 6:11 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	49 min
Jul 28, 6:23 PM CDT	Severe Thunderstorm Warning	MPX	Rice	52 min
Jul 28, 6:34 PM CDT	Severe Thunderstorm Warning	MPX	Steele	41 min
Jul 28, 6:39 PM CDT	Tornado Warning	MPX	Rice	36 min
Jul 28, 6:50 PM CDT	Tornado Warning	MPX	Goodhue	25 min

Nearby

Tornado Warnings in Minnesota, 2002 Every tornado warning in 2002 Tornadoes in 2002

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.