Alert archive / Wisconsin / Tornado Warnings in 2005

Tornado Warning 66, NWS Twin Cities, MN

September 21, 2005Polk County, Wisconsin

NWS Twin Cities, MN issued this tornado warning at Sep 21, 2005, 7:01 PM CDT for Polk County, Wisconsin. It was in force for 29 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 21, 2005, 7:01 PM CDT (00:01 UTC)
Expired: Sep 21, 2005, 7:30 PM CDT
In force: 29 min
Issued by: NWS Twin Cities, MN
Area: Counties, with a storm outline in the text

County Polk County, WI

The radar

The Minneapolis radar (KMPX), 125 km from the middle of the area, began a volume at 00:03 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.

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 21, 4:00 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.0 hours before the alert went out and 127 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: 2043 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 1714 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 274 m²/s²
0-3 km storm-relative helicity: 406 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 9.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KMPX 220002
TORMPX
WIC095-220030-
/O.NEW.KMPX.TO.W.0066.050922T0001Z-050922T0030Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
701 PM CDT WED SEP 21 2005

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  POLK COUNTY IN NORTHWEST WISCONSIN

* UNTIL 730 PM CDT

* AT 658 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
  TORNADO...8 MILES SOUTHWEST OF MCKINLEY...OR ABOUT 8 MILES
  NORTHEAST OF BALSAM LAKE...MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MILLTOWN...
  LORAINE....
  LUCK....

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.

LAT...LON 4561 9244 4546 9242 4545 9217 4564 9218

$$

MKM

1 follow-up statement

000 
WWUS53 KMPX 220020
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
720 PM CDT WED SEP 21 2005

WIC095-220030-
/O.CON.KMPX.TO.W.0066.000000T0000Z-050922T0030Z/
POLK WI-
720 PM CDT WED SEP 21 2005

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 730 PM CDT FOR POLK
COUNTY...

AT 716 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THE SEVERE THUNDERSTORM
WAS LOCATED 8 MILES WEST OF MCKINLEY...OR ABOUT 8 MILES NORTHEAST OF
BALSAM LAKE...AND MOVING EAST AT 35 MPH.

THE TORNADO WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
INDICATED COUNTY.

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.

LAT...LON 4561 9244 4546 9242 4545 9217 4564 9218

$$

RJN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 21, 7:14 PM CDT	Severe Thunderstorm Warning	MPX	Barron	61 min
Sep 21, 7:28 PM CDT	Severe Thunderstorm Warning	MPX	Polk	62 min
Sep 21, 7:36 PM CDT	Flash Flood Warning	MPX	Barron	3 hr
Sep 21, 7:40 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	65 min
Sep 21, 7:56 PM CDT	Flash Flood Warning	MPX	Polk	3 hr
Sep 21, 7:59 PM CDT	Flash Flood Warning	MPX	Saint Croix	3 hr
Sep 21, 8:14 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn	61 min
Sep 21, 8:20 PM CDT	Severe Thunderstorm Warning	MPX	Pierce	55 min
Sep 21, 8:28 PM CDT	Severe Thunderstorm Warning	MPX	Polk	32 min
Sep 21, 8:38 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	67 min
Sep 21, 9:43 PM CDT	Severe Thunderstorm Warning	MPX	Pierce, Saint Croix	47 min

Nearby

Tornado Warnings in Wisconsin, 2005 Every tornado warning in 2005 Tornadoes in 2005

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.