Alert archive / Iowa / Tornado Warnings in 2005

Tornado Warning 17, NWS Sioux Falls, SD

June 29, 2005Dickinson County, Iowa

NWS Sioux Falls, SD issued this tornado warning at Jun 29, 2005, 8:04 PM CDT for Dickinson County, Iowa. It was in force for 26 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
Jun 29, 2005, 8:04 PM CDT (01:04 UTC)
Expired
Jun 29, 2005, 8:30 PM CDT
In force
26 min
Issued by
NWS Sioux Falls, SD
Area
Counties, with a storm outline in the text

County Dickinson County, IA

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 29, 3:50 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 1.1 hours before the alert went out and 192 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 00:00Z on 2005-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2111 joules per kilogram.LCLLFCEL10008507005003002001001 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 00:00Z on 2005-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 283 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
2111 J/kg
Mixed-layer CIN
-28 J/kg
Mixed-layer LCL
970 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
283 m²/s²
0-3 km storm-relative helicity
415 m²/s²
Significant tornado parameter
3.1
Supercell composite
18.6

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KFSD 300104
TORFSD
IAC059-300130-
/O.NEW.KFSD.TO.W.0017.050630T0104Z-050630T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
804 PM CDT WED JUN 29 2005

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEAST DICKINSON COUNTY IN NORTHWEST IOWA

* UNTIL 830 PM CDT

* AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR SUPERIOR...
  OR ABOUT 6 MILES EAST OF SPIRIT LAKE...MOVING NORTHEAST AT 30 MPH.

THIS IS A DANGEROUS SITUATION.  TAKE COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
WEDNESDAY EVENING FOR NORTHWEST IOWA.

LAT...LON 4350 9509 4337 9504 4341 9492 4350 9493

$$

SCHUMACHER
2 follow-up statements
000 
WWUS53 KFSD 300117
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
816 PM CDT WED JUN 29 2005

IAC059-300130-
/O.CON.KFSD.TO.W.0017.000000T0000Z-050630T0130Z/
DICKINSON IA-
816 PM CDT WED JUN 29 2005

...A TORNADO WARNING CONTINUES UNTIL 830 PM CDT FOR NORTHEAST 
DICKINSON COUNTY...

AT 816 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A TORNADIC THUNDERSTORM. THIS TORNADO WAS LOCATED NEAR 
SUPERIOR...OR ABOUT 9 MILES EAST OF SPIRIT LAKE...MOVING NORTHEAST 
AT 30 MPH.  

AT 810 PM CDT...DICKINSON COUNTY EMERGENCY MANAGEMENT REPORTED A 
FUNNEL CLOUD 2 MILES SOUTH OF SUPERIOR.

THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. TAKE
COVER NOW.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT WEDNESDAY EVENING
FOR NORTHWEST IOWA AND SOUTHWEST MINNESOTA.

LAT...LON 4350 9509 4337 9504 4341 9492 4350 9493

$$

SCHUMACHER
000 
WWUS53 KFSD 300127
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
826 PM CDT WED JUN 29 2005

IAC059-300136-
/O.EXP.KFSD.TO.W.0017.000000T0000Z-050630T0130Z/
DICKINSON IA-
826 PM CDT WED JUN 29 2005

...THE TORNADO WARNING FOR NORTHEAST DICKINSON COUNTY EXPIRES AT 830 
PM CDT...

THE WARNING HAS EXPIRED. THE STORM HAS EXITED THE COUNTY.  OTHER 
STORMS MOVING TOWARD SPIRIT LAKE MAY PRODUCE WIND GUSTS TO 50 MPH 
AND PEA SIZE HAIL THROUGH 9 PM CDT.

LAT...LON 4350 9509 4337 9504 4341 9492 4350 9493

$$

SCHUMACHER

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 7:37 PM CDTTornado WarningFSDDickinson23 min
Jun 29, 7:45 PM CDTTornado WarningFSDClay45 min

Nearby

Tornado Warnings in Iowa, 2005Every tornado warning in 2005Tornadoes 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.