Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 31, NWS Twin Cities, MN

June 17, 2010Chisago County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 17, 2010, 8:34 PM CDT for Chisago County, Minnesota. It was in force for 26 min. 3 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, 8:34 PM CDT (01:34 UTC)
Expired
Jun 17, 2010, 9:00 PM CDT
In force
26 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon

County Chisago County, MN

The radar

The Minneapolis radar (KMPX), 100 km from the middle of the area, began a volume at 01:37 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

TimeReportWhereRemark
Jun 17, 8:40 PM CDTFUNNEL CLOUD2 N Rush City, MNALONG INTERSTATE 35.
Jun 17, 8:40 PM CDTHAIL 1.752 N Rush City, MNALONG INTERSTATE 35.
Jun 17, 8:40 PM CDTTORNADO2 N Rush City, MN

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.

IssuedProductOfficeLasted
Jun 17, 1:54 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.6 hours before the alert went out and 326 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, International Fa, MN at 00:00Z on 2010-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 396 joules per kilogram.LCLLFCEL10008507005003002001001 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, International Fa, MN at 00:00Z on 2010-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 321 square meters per square second.19395878Sfc1 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
396 J/kg
Mixed-layer CIN
-254 J/kg
Mixed-layer LCL
1127 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
321 m²/s²
0-3 km storm-relative helicity
536 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

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

488 
WFUS53 KMPX 180134
TORMPX
MNC025-180200-
/O.NEW.KMPX.TO.W.0031.100618T0134Z-100618T0200Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 900 PM CDT

* AT 832 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 4 MILES SOUTHWEST
  OF RUSH CITY...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  RUSH CITY...
  INTERSTATE 35...

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 SOUTHEASTERN MINNESOTA.

&&

LAT...LON 4569 9286 4564 9288 4559 9288 4555 9303
      4556 9303 4557 9309 4564 9314 4572 9314
      4574 9306 4574 9283
TIME...MOT...LOC 0134Z 244DEG 37KT 4566 9301

$$

TRH/MTF
3 follow-up statements
498 
WWUS53 KMPX 180141
SVSMPX

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

MNC025-180200-
/O.CON.KMPX.TO.W.0031.000000T0000Z-100618T0200Z/
CHISAGO MN-
841 PM CDT THU JUN 17 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN CHISAGO
COUNTY UNTIL 900 PM CDT...

AT 841 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM 
WAS LOCATED NEAR RUSH CITY...OR NEAR INTERSTATE 35...OR 15 MILES 
NORTHEAST OF CAMBRIDGE...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHERN CHISAGO COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4569 9286 4564 9288 4559 9288 4557 9297
      4560 9303 4566 9308 4572 9310 4574 9306
      4574 9283
TIME...MOT...LOC 0141Z 244DEG 37KT 4569 9292

$$

TRH/MTF
897 
WWUS53 KMPX 180145
SVSMPX

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

MNC025-180200-
/O.CON.KMPX.TO.W.0031.000000T0000Z-100618T0200Z/
CHISAGO MN-
845 PM CDT THU JUN 17 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTH CENTRAL CHISAGO
COUNTY UNTIL 900 PM CDT...

AT 844 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM 
WAS LOCATED IMMEDIATELY NORTH OF RUSH CITY...OR 17 MILES NORTHEAST 
OF CAMBRIDGE...MOVING NORTHEAST AT 45 MPH. HAIL UP TO THE SIZE OF 
GOLF BALLS IS POSSIBLE WITH THIS TORNADIC STORM.

AT 843 PM...A FUNNEL CLOUD AND GOLF BALL SIZE HAIL WAS REPORTED BY A 
TRAINED STORM SPOTTER WITH THIS STORM NEAR RUSH CITY.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS EXTREME NORTHERN CHISAGO COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

TORNADOES ARE DIFFICULT TO SEE AT NIGHT. TAKE COVER NOW.

&&

LAT...LON 4569 9286 4564 9288 4561 9288 4561 9292
      4561 9296 4565 9301 4574 9303 4574 9283
TIME...MOT...LOC 0144Z 244DEG 37KT 4570 9288

$$

TRH
901 
WWUS53 KMPX 180153
SVSMPX

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

MNC025-180203-
/O.EXP.KMPX.TO.W.0031.000000T0000Z-100618T0200Z/
CHISAGO MN-
853 PM CDT THU JUN 17 2010

...THE TORNADO WARNING FOR NORTH CENTRAL CHISAGO COUNTY WILL EXPIRE
AT 900 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4569 9286 4564 9288 4561 9288 4561 9292
      4561 9296 4565 9301 4574 9303 4574 9283
TIME...MOT...LOC 0153Z 244DEG 37KT 4574 9276

$$

TRH

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, 7:13 PM CDTTornado WarningMPXBlue Earth, Steele, Waseca47 min
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

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.