Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 21, NWS Twin Cities, MN

June 17, 2010Blue Earth County, Nicollet County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 17, 2010, 6:42 PM CDT for Blue Earth County, Nicollet County, Minnesota. It was in force for 33 min. 2 reports 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: Jun 17, 2010, 6:42 PM CDT (23:42 UTC)
Expired: Jun 17, 2010, 7:15 PM CDT
In force: 33 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Blue Earth County, MN, Nicollet County, MN

The radar

The Minneapolis radar (KMPX), 98 km from the middle of the area, began a volume at 23:42 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
Jun 17, 7:00 PM CDT	TORNADO	3 S Mankato, MN	NO LONGER ON GROUND AT 706 DEBRIS FLEW AROUND AT CR 90 AND 16
Jun 17, 7:00 PM CDT	TORNADO	4 S Mankato, MN	DAMAGE SURVEY DETERMINED TORNADO PRODUCED EF-0 DAMAGE EAST-SOUTHEAST OF RAPIDAN. IT TOUCHED DOWN NEAR COUNTY ROAD 16 AND 192ND LANE...WHERE A COUPLE HUNDRED TREES WERE SNAPPED OR SHEARED OFF.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 17, 1:54 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 11.7 hours before the alert went out and 97 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: 2 J/kg
Mixed-layer CIN: -317 J/kg
Mixed-layer LCL: 1224 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 110 m²/s²
0-3 km storm-relative helicity: 85 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.

790 
WFUS53 KMPX 172342
TORMPX
MNC013-103-180015-
/O.NEW.KMPX.TO.W.0021.100617T2342Z-100618T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
642 PM CDT THU JUN 17 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA...
  BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 715 PM CDT

* AT 638 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG
  ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS 6 MILES
  NORTHWEST OF VERNON CENTER...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  MANKATO...
  GOOD THUNDER...
  NORTH MANKATO...
  ST CLAIR...
  EAGLE LAKE...
  LAKE CRYSTAL...
  SKYLINE...
  MADISON LAKE...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT THURSDAY EVENING
FOR SOUTHERN MINNESOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL
100 AM CDT FRIDAY MORNING FOR NORTHWESTERN WISCONSIN.

&&

LAT...LON 4399 9437 4407 9437 4424 9401 4423 9377
      4407 9379 4390 9429
TIME...MOT...LOC 2342Z 238DEG 39KT 4403 9423

$$

2 follow-up statements

226 
WWUS53 KMPX 172353
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
653 PM CDT THU JUN 17 2010

MNC013-103-180015-
/O.CON.KMPX.TO.W.0021.000000T0000Z-100618T0015Z/
NICOLLET MN-BLUE EARTH MN-
653 PM CDT THU JUN 17 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR BLUE EARTH AND
SOUTHEASTERN NICOLLET COUNTIES UNTIL 715 PM CDT...

AT 652 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED 5 MILES NORTHWEST OF GOOD THUNDER...OR 10 MILES SOUTHWEST
OF MANKATO...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  MANKATO...NORTH MANKATO...ST CLAIR...EAGLE LAKE...SKYLINE AND
  MADISON LAKE.

LAT...LON 4399 9437 4407 9437 4424 9401 4423 9377
      4407 9379 4390 9429
TIME...MOT...LOC 2353Z 238DEG 33KT 4407 9413

$$

381 
WWUS53 KMPX 180004
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
704 PM CDT THU JUN 17 2010

MNC013-103-180015-
/O.CON.KMPX.TO.W.0021.000000T0000Z-100618T0015Z/
NICOLLET MN-BLUE EARTH MN-
704 PM CDT THU JUN 17 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR BLUE EARTH AND
SOUTHEASTERN NICOLLET COUNTIES UNTIL 715 PM CDT...

AT 701 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR GOOD THUNDER...OR 8 MILES SOUTHWEST OF
MANKATO...MOVING EAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MANKATO...NORTH MANKATO...ST CLAIR...EAGLE LAKE...SKYLINE AND
  MADISON LAKE.

LAT...LON 4399 9437 4407 9437 4424 9401 4423 9377
      4407 9379 4390 9429
TIME...MOT...LOC 0004Z 252DEG 22KT 4406 9404

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:50 AM CDT	Special Weather Statement	MPX	Stevens	25 min
Jun 17, 8:11 AM CDT	Special Weather Statement	MPX	Douglas	49 min
Jun 17, 9:15 AM CDT	Special Weather Statement	MPX	Douglas, Todd	90 min
Jun 17, 10:44 AM CDT	Special Weather Statement	MPX	Todd	61 min
Jun 17, 2:20 PM CDT	Special Weather Statement	MPX	Douglas, Pope, Swift	55 min
Jun 17, 2:27 PM CDT	Severe Thunderstorm Warning	MPX	Douglas, Pope, Stevens	63 min
Jun 17, 2:51 PM CDT	Tornado Warning	MPX	Douglas	39 min
Jun 17, 3:25 PM CDT	Tornado Warning	MPX	Douglas	20 min
Jun 17, 3:43 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Renville, Sibley	47 min
Jun 17, 3:45 PM CDT	Tornado Warning	MPX	Douglas	30 min
Jun 17, 3:50 PM CDT	Tornado Warning	MPX	Brown, Nicollet, Renville, Sibley	40 min
Jun 17, 3:55 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Watonwan	50 min
Jun 17, 3:59 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Renville	61 min
Jun 17, 4:08 PM CDT	Severe Thunderstorm Warning	MPX	Martin, Watonwan	37 min
Jun 17, 4:08 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	52 min
Jun 17, 4:21 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville, Sibley	54 min
Jun 17, 4:26 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet, Sibley	34 min
Jun 17, 4:31 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Martin	59 min
Jun 17, 4:31 PM CDT	Severe Thunderstorm Warning	MPX	Morrison, Todd	59 min
Jun 17, 4:40 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Watonwan	50 min
Jun 17, 4:43 PM CDT	Severe Thunderstorm Warning	MPX	Meeker, Stearns, Wright	47 min
Jun 17, 5:02 PM CDT	Tornado Warning	MPX	Meeker, Stearns, Wright	43 min
Jun 17, 5:05 PM CDT	Tornado Warning	MPX	Faribault	25 min
Jun 17, 5:07 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, McLeod, Wright	53 min
Jun 17, 5:20 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Sherburne	55 min
Jun 17, 5:25 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Rice, Waseca	65 min
Jun 17, 5:28 PM CDT	Tornado Warning	MPX	Carver, McLeod, Wright	47 min
Jun 17, 5:28 PM CDT	Tornado Warning	MPX	Faribault, Freeborn	32 min
Jun 17, 5:32 PM CDT	Tornado Warning	MPX	Blue Earth, Le Sueur, Rice, Waseca	28 min
Jun 17, 5:35 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet	25 min
Jun 17, 5:39 PM CDT	Tornado Warning	MPX	Benton, Sherburne	51 min
Jun 17, 5:44 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Nicollet, Sibley	31 min
Jun 17, 5:56 PM CDT	Tornado Warning	MPX	Faribault, Freeborn	49 min
Jun 17, 5:58 PM CDT	Severe Thunderstorm Warning	MPX	Stearns	17 min
Jun 17, 6:00 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet, Watonwan	60 min
Jun 17, 6:03 PM CDT	Tornado Warning	MPX	Sherburne, Wright	42 min
Jun 17, 6:07 PM CDT	Tornado Warning	MPX	Benton, Mille Lacs	53 min
Jun 17, 6:09 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville	24 min
Jun 17, 6:15 PM CDT	Special Weather Statement	MPX	Todd	30 min
Jun 17, 6:16 PM CDT	Tornado Warning	MPX	Blue Earth, Le Sueur, Nicollet	29 min
Jun 17, 6:28 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Waseca	62 min
Jun 17, 6:35 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti, Sherburne, Wright	55 min
Jun 17, 6:36 PM CDT	Tornado Warning	MPX	Blue Earth, Faribault, Waseca	39 min
Jun 17, 6:44 PM CDT	Tornado Warning	MPX	Freeborn, Steele	46 min
Jun 17, 6:49 PM CDT	Tornado Warning	MPX	Isanti, Kanabec, Mille Lacs, Sherburne	41 min
Jun 17, 6:56 PM CDT	Tornado Warning	MPX	Sherburne	34 min

Nearby

Tornado Warnings in Minnesota, 2010 Every tornado warning in 2010 Tornadoes in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.