Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 26, NWS Twin Cities, MN

June 17, 2010Blue Earth County, Steele County, Waseca County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 17, 2010, 7:13 PM CDT for Blue Earth County, Steele County, Waseca County, Minnesota. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 17, 2010, 7:13 PM CDT (00:13 UTC)
Expired
Jun 17, 2010, 8:00 PM CDT
In force
47 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

Counties Blue Earth County, MN, Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 82 km from the middle of the area, began a volume at 00:14 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.

The watch it was issued in

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

IssuedProductOfficeLasted
Jun 17, 1:54 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 0.2 hours before the alert went out and 375 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, Aberdeen, SD at 00:00Z on 2010-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2010-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2136 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
55 m²/s²
0-3 km storm-relative helicity
114 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.

604 
WFUS53 KMPX 180013
TORMPX
MNC013-147-161-180100-
/O.NEW.KMPX.TO.W.0026.100618T0013Z-100618T0100Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN BLUE EARTH COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHERN WASECA COUNTY IN SOUTH CENTRAL MINNESOTA...
  NORTHWESTERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...

* UNTIL 800 PM CDT

* AT 710 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG
  ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS 5 MILES
  SOUTHWEST OF ST CLAIR...AND MOVING EAST AT 30 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  EAGLE LAKE...
  ST CLAIR...
  PEMBERTON...
  JANESVILLE...

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 4419 9380 4419 9332 4394 9395 4412 9409
TIME...MOT...LOC 0013Z 259DEG 27KT 4405 9393

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 7:00 PM CDTSevere Thunderstorm WarningMPXAnoka, Hennepin, Ramsey35 min
Jun 17, 7:10 PM CDTTornado WarningMPXSteele, Waseca50 min
Jun 17, 7:12 PM CDTSpecial Weather StatementMPXChisago, Washington2 hr
Jun 17, 7:28 PM CDTTornado WarningMPXFreeborn, Steele47 min
Jun 17, 7:52 PM CDTTornado WarningMPXSteele23 min
Jun 17, 7:55 PM CDTFlash Flood WarningMPXFreeborn, Steele, Waseca6 hr
Jun 17, 8:00 PM CDTAreal Flood AdvisoryMPXBlue Earth, Faribault, Le Sueur, Nicollet, Rice6 hr
Jun 17, 8:02 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti43 min
Jun 17, 8:11 PM CDTTornado WarningMPXSteele34 min
Jun 17, 8:13 PM CDTTornado WarningMPXFreeborn32 min
Jun 17, 8:34 PM CDTTornado WarningMPXChisago26 min

Nearby

Tornado Warnings in Minnesota, 2010Every tornado warning in 2010Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.