Alert archive / Minnesota / Tornado Warnings in 2010

Tornado Warning 50, NWS Twin Cities, MN

June 26, 2010Dakota County, Scott County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Jun 26, 2010, 9:42 PM CDT for Dakota County, Scott County, Minnesota. It was in force for 48 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: Jun 26, 2010, 9:42 PM CDT (02:42 UTC)
Expired: Jun 26, 2010, 10:30 PM CDT
In force: 48 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon

Counties Dakota County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 42 km from the middle of the area, began a volume at 02:42 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 26, 10:15 PM CDT	TSTM WND DMG	3 S Lakeville, MN	TREE DOWN ON POWER LINE.

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 26, 7:56 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.7 hours before the alert went out and 45 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: 1959 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 876 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 34 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.

242 
WFUS53 KMPX 270242
TORMPX
MNC037-139-270330-
/O.NEW.KMPX.TO.W.0050.100627T0242Z-100627T0330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
942 PM CDT SAT JUN 26 2010

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHEASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 1030 PM CDT

* AT 942 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 3 MILES NORTH OF
  NEW MARKET...AND MOVING NORTHEAST AT 40 MPH.

* LOCATIONS IN THE WARNING INCLUDE...
  LAKEVILLE...
  FARMINGTON...
  APPLE VALLEY...
  ROSEMOUNT...
  COATES...
  VERMILLION...
  INVER GROVE HEIGHTS...
  HASTINGS...

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.

&&

LAT...LON 4455 9344 4467 9347 4488 9302 4479 9302
      4477 9297 4478 9294 4478 9291 4471 9273
      4470 9273
TIME...MOT...LOC 0243Z 245DEG 36KT 4462 9333

$$

4 follow-up statements

872 
WWUS53 KMPX 270258
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
958 PM CDT SAT JUN 26 2010

MNC139-270308-
/O.CAN.KMPX.TO.W.0050.000000T0000Z-100627T0330Z/
SCOTT MN-
958 PM CDT SAT JUN 26 2010

...THE TORNADO WARNING FOR SOUTHEASTERN SCOTT COUNTY IS CANCELLED...

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

LAT...LON 4462 9329 4463 9332 4474 9332 4488 9302
      4479 9302 4477 9297 4478 9291 4471 9273
      4470 9273 4458 9328
TIME...MOT...LOC 0258Z 249DEG 33KT 4465 9322

$$

MNC037-270330-
/O.CON.KMPX.TO.W.0050.000000T0000Z-100627T0330Z/
DAKOTA MN-
958 PM CDT SAT JUN 26 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR DAKOTA COUNTY
UNTIL 1030 PM CDT...

AT 955 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR LAKEVILLE...OR 23 MILES SOUTH OF MINNEAPOLIS...
MOVING EAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  FARMINGTON...APPLE VALLEY...ROSEMOUNT...COATES...INVER GROVE
  HEIGHTS...VERMILLION AND HASTINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4462 9329 4463 9332 4474 9332 4488 9302
      4479 9302 4477 9297 4478 9291 4471 9273
      4470 9273 4458 9328
TIME...MOT...LOC 0258Z 249DEG 33KT 4465 9322

$$

517 
WWUS53 KMPX 270308
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1008 PM CDT SAT JUN 26 2010

MNC037-270330-
/O.CON.KMPX.TO.W.0050.000000T0000Z-100627T0330Z/
DAKOTA MN-
1008 PM CDT SAT JUN 26 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN DAKOTA COUNTY
UNTIL 1030 PM CDT...

AT 1004 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR HAMPTON...OR 21 MILES SOUTH OF ST PAUL...MOVING EAST
AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  COATES...INVER GROVE HEIGHTS...VERMILLION AND HASTINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4476 9327 4488 9302 4479 9302 4477 9300
      4477 9297 4478 9291 4471 9273 4470 9273
      4460 9321
TIME...MOT...LOC 0308Z 249DEG 33KT 4466 9302

$$

399 
WWUS53 KMPX 270318
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1018 PM CDT SAT JUN 26 2010

MNC037-270330-
/O.CON.KMPX.TO.W.0050.000000T0000Z-100627T0330Z/
DAKOTA MN-
1018 PM CDT SAT JUN 26 2010

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN DAKOTA COUNTY
UNTIL 1030 PM CDT...

AT 1019 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS STORM
WAS LOCATED NEAR VERMILLION...OR 20 MILES SOUTH OF ST PAUL...MOVING
NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  INVER GROVE HEIGHTS AND HASTINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4479 9322 4488 9302 4479 9302 4477 9300
      4478 9291 4476 9287 4471 9273 4470 9274
      4462 9311
TIME...MOT...LOC 0319Z 237DEG 22KT 4469 9297

$$

861 
WWUS53 KMPX 270327
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1027 PM CDT SAT JUN 26 2010

MNC037-270337-
/O.EXP.KMPX.TO.W.0050.000000T0000Z-100627T0330Z/
DAKOTA MN-
1027 PM CDT SAT JUN 26 2010

...THE TORNADO WARNING FOR NORTHERN DAKOTA COUNTY WILL EXPIRE AT 1030
PM CDT...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...GUSTY WINDS ARE STILL POSSIBLE WITHIN REMAINING
THUNDERSTORMS.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CDT.

LAT...LON 4479 9322 4488 9302 4479 9302 4477 9300
      4478 9291 4476 9287 4471 9273 4470 9274
      4462 9311
TIME...MOT...LOC 0327Z 237DEG 22KT 4472 9291

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 7:39 PM CDT	Special Weather Statement	MPX	Brown, Nicollet, Watonwan	51 min
Jun 26, 7:59 PM CDT	Special Weather Statement	MPX	Carver, Hennepin, Scott	61 min
Jun 26, 8:03 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Brown, Le Sueur, Nicollet, Sibley, Watonwan	57 min
Jun 26, 8:15 PM CDT	Flash Flood Warning	MPX	Blue Earth, Faribault, Martin, Watonwan	4 hr
Jun 26, 8:17 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Martin, Watonwan	43 min
Jun 26, 8:22 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott, Sibley	53 min
Jun 26, 8:45 PM CDT	Tornado Warning	MPX	Blue Earth, Nicollet	30 min
Jun 26, 8:50 PM CDT	Flash Flood Warning	MPX	Dakota, Freeborn, Le Sueur, Rice, Scott, Steele and 1 more	5 hr
Jun 26, 8:51 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Le Sueur, Rice, Scott	84 min
Jun 26, 9:00 PM CDT	Areal Flood Advisory	MPX	Carver	5 hr
Jun 26, 9:00 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault, Freeborn, Martin, Steele, Waseca	60 min
Jun 26, 9:11 PM CDT	Tornado Warning	MPX	Le Sueur, Rice, Scott	34 min
Jun 26, 9:35 PM CDT	Tornado Warning	MPX	Steele, Waseca	25 min
Jun 26, 9:45 PM CDT	Flash Flood Warning	MPX	Goodhue	4 hr
Jun 26, 9:47 PM CDT	Tornado Warning	MPX	Faribault, Freeborn, Steele, Waseca	28 min
Jun 26, 9:53 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	82 min
Jun 26, 9:56 PM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn, Steele, Waseca	49 min
Jun 26, 10:14 PM CDT	Areal Flood Advisory	MPX	Washington	4 hr
Jun 26, 10:40 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	61 min
Jun 26, 10:57 PM CDT	Flash Flood Warning	MPX	Hennepin, Ramsey, Washington	3 hr
Jun 27, 12:31 AM CDT	Special Weather Statement	MPX	Dakota, Goodhue, Ramsey, Washington	59 min
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Blue Earth, Brown, Nicollet	4 days
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Blue Earth, Brown, Nicollet	9 days
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Le Sueur, Scott, Sibley	8 days
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Carver, Scott	11 days
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Carver, Hennepin, Scott	11 days
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Dakota, Hennepin, Scott	3 days
Jun 27, 10:42 AM CDT	River Flood Warning	MPX	Redwood	49 hr

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.