Alert archive / Minnesota / Tornado Warnings in 2006

Tornado Warning 19, NWS Twin Cities, MN

September 16, 2006Chippewa County, Swift County, Minnesota

NWS Twin Cities, MN issued this tornado warning at Sep 16, 2006, 5:18 PM CDT for Chippewa County, Swift County, Minnesota. It was in force for 42 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, 5:18 PM CDT (22:18 UTC)
Expired
Sep 16, 2006, 6:00 PM CDT
In force
42 min
Issued by
NWS Twin Cities, MN
Area
Counties, with a storm outline in the text

Counties Chippewa County, MN, Swift County, MN

The radar

The Minneapolis radar (KMPX), 167 km from the middle of the area, began a volume at 22:21 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
Sep 16, 5:35 PM CDTHAIL 1.25Benson, 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
Sep 16, 5:07 PM CDTTornado Watch PDSSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.3 hours before the alert went out and 164 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, Minneapolis, MN at 12:00Z on 2006-09-16Temperature 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, Minneapolis, MN at 12:00Z on 2006-09-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
624 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
396 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 162219
TORMPX
MNC023-151-162300-
/O.NEW.KMPX.TO.W.0019.060916T2218Z-060916T2300Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SWIFT COUNTY IN WEST CENTRAL MINNESOTA...
  CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 600 PM CDT

* AT 517 PM CDT...RADAR WAS TRACKING A SEVERE STORM WITH STRONG
  ROTATION. THE MOST DANGEROUS PART OF THE STORM WAS 15 MILES
  SOUTHWEST OF BENSON...OR ABOUT 12 MILES NORTH OF MONTEVIDEO...AND
  MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BENSON...
  BIG BEND CITY...
  DE GRAFF...
  HAGEN...
  MURDOCK...
  
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.

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

LAT...LON 4509 9591 4505 9573 4508 9561 4515 9538
      4541 9526 4541 9565

$$
3 follow-up statements
000 
WWUS53 KMPX 162236
SVSMPX

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

MNC023-162244-
/O.CAN.KMPX.TO.W.0019.000000T0000Z-060916T2300Z/
CHIPPEWA MN-
534 PM CDT SAT SEP 16 2006

...THE TORNADO WARNING FOR CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA
IS CANCELLED...

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

THE TORNADIC STORM HAD MOVED OUT OF CHIPPEWA COUNTY.  MORE STORMS 
WERE OCCURRING AND DEVELOPING WEST AND SOUTHWEST OF CHIPPEWA 
COUNTY.  

LAT...LON 4517 9581 4515 9569 4516 9554 4541 9526
      4541 9573

$$

MNC151-162300-
/O.CON.KMPX.TO.W.0019.000000T0000Z-060916T2300Z/
SWIFT MN-
534 PM CDT SAT SEP 16 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR SWIFT
COUNTY...

AT 530 PM CDT...WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM WITH STRONG ROTATION.   THE SEVERE THUNDERSTORM WAS
LOCATED 6 MILES SOUTHEAST OF DANVERS...OR ABOUT 9 MILES SOUTHWEST OF
BENSON...AND MOVING NORTHEAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE... 

BENSON...
SWIFT FALLS...
CLONTARF...

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.

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

LAT...LON 4517 9581 4515 9569 4516 9554 4541 9526
      4541 9573

$$

MTF
000 
WWUS53 KMPX 162248
SVSMPX

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

MNC151-162300-
/O.CON.KMPX.TO.W.0019.000000T0000Z-060916T2300Z/
SWIFT MN-
546 PM CDT SAT SEP 16 2006

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR SWIFT
COUNTY...

AT 542 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.   THE SEVERE 
THUNDERSTORM WAS LOCATED NEAR BENSON...AND MOVING NORTHEAST AT 30 
MPH. THE ROTATION WITHIN THIS STORM IS WEAKENING AND WILL LIKELY 
DISSIPATE BEFORE REACHING THE POPE COUNTY LINE. HOWEVER...THE THREAT 
OF A TORNADO STILL EXISTS FOR NORTHERN SWIFT COUNTY.

LOCATIONS IN THE WARNING INCLUDE BENSON AND SWIFT FALLS.

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.

THIS STORM PRODUCED HALF DOLLAR SIZE HAIL IN BENSON AT 535 PM.

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

LAT...LON 4541 9569 4530 9572 4527 9566 4526 9559
      4530 9552 4533 9540 4541 9526

$$

MTF
000 
WWUS53 KMPX 162259
SVSMPX

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

MNC151-162308-
/O.EXP.KMPX.TO.W.0019.000000T0000Z-060916T2300Z/
SWIFT MN-
558 PM CDT SAT SEP 16 2006

...THE TORNADO WARNING FOR SWIFT COUNTY EXPIRES AT 600 PM CDT...

THE TORNADO WARNING THAT WAS IN EFFECT FOR SWIFT COUNTY HAS EXPIRED. 
THE STORM HAD MOVED NORTHEAST AND WEAKENED.  THIS STORM HAD PRODUCED 
LARGE HAIL IN THE CITY OF BENSON EARLIER. 

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

LAT...LON 4541 9569 4530 9572 4527 9566 4526 9559
      4530 9552 4533 9540 4541 9526

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 16, 6:58 PM CDTSevere Thunderstorm WarningMPXRedwood, Renville, Yellow Medicine62 min

Nearby

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