Alert archive / Minnesota / Tornado Warnings in 2006

Tornado Warning 21, NWS Twin Cities, MN

September 16, 2006Renville County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 16, 2006, 8:02 PM CDT for Renville County, Minnesota. It was in force for 43 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: Sep 16, 2006, 8:02 PM CDT (01:02 UTC)
Expired: Sep 16, 2006, 8:45 PM CDT
In force: 43 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Renville County, MN

The radar

The Minneapolis radar (KMPX), 121 km from the middle of the area, began a volume at 01:02 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
Sep 16, 8:20 PM CDT	TSTM WND DMG	Bird Island, MN	POWER LINES AND TREES DOWN. TIME ESTIMATED.

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
Sep 16, 5:07 PM CDT	Tornado Watch PDS	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.0 hours before the alert went out and 118 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: 1108 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 1090 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 328 m²/s²
0-3 km storm-relative helicity: 428 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 11.8

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 170104
TORMPX
MNC129-170145-
/O.NEW.KMPX.TO.W.0021.060917T0102Z-060917T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
802 PM CDT SAT SEP 16 2006

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  RENVILLE COUNTY IN CENTRAL MINNESOTA...

* UNTIL 845 PM CDT

* AT 758 PM CDT...TRAINED WEATHER SPOTTERS REPORTED A ROTATING WALL  
  CLOUD 13 MILES SOUTHWEST OF BECHYN...OR ABOUT 8 MILES WEST OF      
  REDWOOD FALLS.   RADAR SHOWED THE SEVERE STORM ..AND MOVING        
  NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BECHYN...
  BIRD ISLAND...
  HECTOR...
  BUFFALO LAKE...

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR
SOUTHERN MINNESOTA.

LAT...LON 4468 9530 4461 9516 4456 9504 4453 9492
      4452 9479 4480 9482 4471 9521

$$

MTF

2 follow-up statements

000 
WWUS53 KMPX 170129
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
827 PM CDT SAT SEP 16 2006

MNC129-170145-
/O.CON.KMPX.TO.W.0021.000000T0000Z-060917T0145Z/
RENVILLE MN-
827 PM CDT SAT SEP 16 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR RENVILLE
COUNTY...

AT 823 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.   THE SEVERE
THUNDERSTORM WAS LOCATED NEAR BECHYN...OR ABOUT 5 MILES SOUTH OF 
OLIVIA...AND MOVING NORTHEAST AT 40 MPH. THOUGH ROTATION HAS 
WEAKENED WITHIN THIS STORM...IT IS STILL CAPABLE OF PRODUCING A 
BRIEF TORNADO. A SECONDARY STORM CAPABLE OF PRODUCING LARGE HAIL AND 
POSSIBLY A TORNADO IS DEVELOPING FOUR MILES NORTHWEST OF REDWOOD 
FALLS AND WILL ALSO TRACK NORTHEAST ACROSS RENVILLE COUNTY.

LOCATIONS IN THE WARNING INCLUDE BECHYN...OLIVIA....AND HECTOR.

THIS STORM HAS A HISTORY OR PRODUCING ROTATING WALL CLOUDS AND LARGE 
HAIL.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR
SOUTHERN MINNESOTA.

LAT...LON 4468 9530 4461 9516 4456 9504 4455 9497
      4455 9484 4470 9470 4478 9470 4483 9480
      4477 9507 4471 9521

$$

MTF

000 
WWUS53 KMPX 170142
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
841 PM CDT SAT SEP 16 2006

MNC129-170151-
/O.EXP.KMPX.TO.W.0021.000000T0000Z-060917T0145Z/
RENVILLE MN-
841 PM CDT SAT SEP 16 2006

...THE TORNADO WARNING FOR RENVILLE COUNTY EXPIRES AT 845 PM CDT...

THE THUNDERSTORM THAT PROMOTED THE TORNADO WARNING HAS BOTH WEAKENED 
AND MOVED OUT OF THE COUNTY. MORE THUNDERSTORMS ARE LIKELY OVER 
RENVILLE COUNTY THROUGHOUT TONIGHT. STAY ALERT FOR POSSIBLE WARNINGS.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SUNDAY MORNING FOR
SOUTHERN MINNESOTA.

REPORT ANY SEVERE WEATHER THAT OCCURRED TO YOUR LOCAL EMERGENCY 
MANAGEMENT FOR RELAY TO THE NATIONAL WEATHER SERVICE.

LAT...LON 4468 9530 4461 9516 4456 9504 4455 9497
      4455 9484 4470 9470 4478 9470 4483 9480
      4477 9507 4471 9521

$$

MTF

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 16, 7:43 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi	47 min
Sep 16, 7:51 PM CDT	Tornado Warning	MPX	Redwood, Yellow Medicine	24 min
Sep 16, 8:23 PM CDT	Severe Thunderstorm Warning	MPX	Meeker	52 min
Sep 16, 8:33 PM CDT	Severe Thunderstorm Warning	MPX	McLeod	57 min
Sep 16, 8:48 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Wright	42 min
Sep 16, 9:27 PM CDT	Severe Thunderstorm Warning	MPX	Martin	63 min
Sep 16, 9:32 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Faribault	58 min
Sep 16, 9:43 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Wright	47 min
Sep 16, 10:02 PM CDT	Severe Thunderstorm Warning	MPX	Waseca	46 min
Sep 16, 10:04 PM CDT	Tornado Warning	MPX	Anoka	26 min
Sep 16, 10:29 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Hennepin, Washington	61 min
Sep 16, 10:56 PM CDT	Tornado Warning	MPX	Anoka, Hennepin	34 min
Sep 16, 11:28 PM CDT	Severe Thunderstorm Warning	MPX	Chisago	32 min
Sep 16, 11:44 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	52 min

Nearby

Tornado Warnings in Minnesota, 2006 Every tornado warning in 2006 Tornadoes in 2006

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.