Alert archive / Minnesota / Tornado Warnings in 2007

Tornado Warning 6, NWS Twin Cities, MN

May 23, 2007Goodhue County, Minnesota

NWS Twin Cities, MN issued this tornado warning at May 23, 2007, 4:07 PM CDT for Goodhue County, Minnesota. It was in force for 53 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: May 23, 2007, 4:07 PM CDT (21:07 UTC)
Expired: May 23, 2007, 5:00 PM CDT
In force: 53 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Goodhue County, MN

The radar

The Minneapolis radar (KMPX), 76 km from the middle of the area, began a volume at 21:10 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
May 23, 4:25 PM CDT	TORNADO	2 Se Wanamingo, MN	UNCONFIRMED PUBLIC REPORT OF WEAK TORNADO PICKING UP DUST WHILE CROSSING OPEN FIELD 2 MILES SOUTHEAST OF WANAMINGO. RELAYED BY COUNTY OFFICIALS.

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
May 23, 2:58 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.1 hours before the alert went out and 78 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: 84 J/kg
Mixed-layer CIN: -48 J/kg
Mixed-layer LCL: 811 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 141 m²/s²
0-3 km storm-relative helicity: 164 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.

000 
WFUS53 KMPX 232107
TORMPX
MNC049-232200-
/O.NEW.KMPX.TO.W.0006.070523T2107Z-070523T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
407 PM CDT WED MAY 23 2007

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  GOODHUE COUNTY IN SOUTHEAST MINNESOTA...

* UNTIL 500 PM CDT

* AT 406 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 4 MILES SOUTHEAST
  OF DENNISON...OR ABOUT 5 MILES NORTH OF KENYON...AND MOVING
  NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WANAMINGO...
  HADER...
  WASTEDO...
  GOODHUE...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER 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 4438 9305 4421 9303 4432 9257 4456 9252
      4449 9295

$$

MB

1 follow-up statement

000 
WWUS53 KMPX 232148
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
446 PM CDT WED MAY 23 2007

MNC049-232200-
/O.CON.KMPX.TO.W.0006.000000T0000Z-070523T2200Z/
GOODHUE MN-
446 PM CDT WED MAY 23 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR GOODHUE
COUNTY...

AT 425 PM CDT...AN UNCONFIRMED TORNADO WAS REPORTED BY THE PUBLIC 2 
MILES SOUTHEAST OF WANAMINGO.

AT 443 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE 
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THE SEVERE 
THUNDERSTORM WAS LOCATED NEAR GOODHUE...OR ABOUT 9 MILES NORTH OF 
ZUMBROTA...AND MOVING NORTHEAST AT 25 MPH.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST
DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4432 9282 4420 9280 4431 9256 4457 9251
      4450 9280

$$

MB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 2:06 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	39 min
May 23, 2:25 PM CDT	Tornado Warning	MPX	Anoka, Hennepin	35 min
May 23, 2:39 PM CDT	Severe Thunderstorm Warning	MPX	Ramsey, Washington	51 min
May 23, 2:43 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	62 min
May 23, 3:12 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	46 min
May 23, 3:18 PM CDT	Severe Thunderstorm Warning	MPX	Dakota	42 min
May 23, 3:22 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	53 min
May 23, 3:29 PM CDT	Severe Thunderstorm Warning	MPX	Ramsey, Washington	61 min
May 23, 3:42 PM CDT	Severe Thunderstorm Warning	MPX	Rice	46 min
May 23, 4:18 PM CDT	Tornado Warning	MPX	Dakota	20 min
May 23, 5:01 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	44 min
May 23, 6:49 PM CDT	Severe Thunderstorm Warning	MPX	Faribault	41 min
May 23, 6:57 PM CDT	Flash Flood Warning	MPX	Faribault, Freeborn	3 hr

Nearby

Tornado Warnings in Minnesota, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.