THE STORM SURVEY INVESTIGATION IS COMPLETE FOR THESE FOUR TORNADOES.

...PRELIMINARY DAMAGE SURVEY RESULTS FOR CLARKE, WARREN,LUCAS, MARION, MAHASKA, AND DALLAS COUNTIES...

THE FOLLOWING IS A PRELIMINARY ASSESSMENT FOR THE FIRST TORNADO DAMAGE THAT OCCURRED OVER MURRAY IN CLARKE COUNTY ON MAY 30, 2008.


* EVENT DATE: MAY 30, 2008

* ESTIMATED START TIME: 413 AM CDT TO 424 AM CDT MAY 30, 2008

* EVENT TYPE: EF1 TORNADO

* EVENT LOCATION: 3.4 MILES NORTHEAST OF MURRAY, IOWA TO 5.3 MILES NORTHWEST
OF OSCEOLA, IOWA.

* PEAK WIND: 86 TO 110 MPH

* AVERAGE PATH WIDTH: UNKNOWN AT THIS TIME

* PATH LENGTH: 9.1 MILES

* INJURIES: NONE

* FATALITIES: NONE

* DISCUSSION/DAMAGE: PRIMARILY FARM OUTBUILDINGS, POWER LINES, AND TREE DAMAGE.

Tornado #1:  Clarke County

Image depicting tornado track.  Click on image for a larger version.



SECOND TORNADO PRELIMINARY ASSESSMENT FOR THE DAMAGE THAT OCCURRED OVER WARREN, LUCAS, AND MARION COUNTIES ON MAY 30, 2008.


* EVENT DATE: MAY 30, 2008

* ESTIMATED START TIME: 451 AM TO 500 AM CDT MAY 30, 2008

* EVENT TYPE: EF1 TORNADO

* EVENT LOCATION: BEGAN 10.8 MILES NORTHWEST OF CHARITON TO 10.7 MILES NORTHEAST
OF CHARITON.

* PEAK WIND: 86 TO 11O MPH

* AVERAGE PATH WIDTH: 100 YARDS

* PATH LENGTH: 7.8 MILES

* INJURIES: NONE

* FATALITIES: NONE

* DISCUSSION/DAMAGE: FARM BUILDINGS, TREES, AND POWER LINES.

Tornado #2:  Warren, Lucas, and Marion Counties

Image depicting tornado track.  Click on image for a larger version.



THIRD TORNADO PRELIMINARY ASSESSMENT FOR THE DAMAGE THAT OCCURRED OVER MARION AND MAHASKA COUNTIES ON MAY 30, 2008.


* EVENT DATE: MAY 30, 2008

* ESTIMATED START TIME: 507 AM TO 528 AM CDT MAY 30, 2008

* EVENT TYPE: EF2 TORNADO

* EVENT LOCATION: BEGAN 6.14 MILES SOUTH SOUTHEAST OF KNOXVILLE TO 9.86 MILES
SOUTHWEST OF OSKALOOSA.

* PEAK WIND: WIND SPEEDS 111 TO 135 MPH

* AVERAGE PATH WIDTH: REACHED ONE THIRD TO ONE HALF MILE AS RELATED TO THE
NATIONAL WEATHER SERVICE BY IOWA HELICOPTER.COM

* PATH LENGTH: 18 MILES AS RELATED TO THE NATIONAL WEATHER SERVICE BY
IOWA HELICOPTER.COM

* INJURIES: POSSIBLY AS MANY AS 10 INJURIES

* FATALITIES: NONE

* DISCUSSION/DAMAGE: SEVERAL HOMES DAMAGED OR DESTROYED, TWO MOBILE HOMES
DESTROYED, A LOT OF TREE DAMAGE, AND EF2 DAMAGE TO A HOME DESTROYED IN ATTICA.

Tornado #3:  Marion and Mahasa Counties

Image depicting tornado track.  Click on image for a larger version.



FOURTH TORNADO PRELIMINARY ASSESSMENT FOR THE DAMAGE THAT OCCURRED OVER DALLAS COUNTY.


* EVENT DATE: MAY 30, 2008

* ESTIMATED START TIME: 1250 AM CDT TO 1255 AM CDT MAY 29, 2008

* EVENT TYPE: EF1 TORNADO

* EVENT LOCATION: BEGAN APPROXIMATELY 6 MILES WEST NORTHWEST OF ADEL AND
ENDED 3 MILES NORTHWEST...AS BASED ON NATIONAL WEATHER SERVICE DOPPLER
RADAR.

* PEAK WIND: WIND SPEEDS 86 TO 110 MPH

* AVERAGE PATH WIDTH: 200 YARDS

* PATH LENGTH: 4 MILES

* INJURIES: NONE

* FATALITIES: NONE

* DISCUSSION/DAMAGE: POWER LINE AND TREE DAMAGE AS WELL AS FARM OUTBUILDINGS
DAMAGED AND DESTROYED. INFORMATION COURTESY OF IOWA HELICOPTER.COM WITH
THE EXCEPTION OF THE EVENT LOCATION START AND END POINTS.

Tornado #4:  Dallas County

Image depicting tornado track.  Click on image for a larger version.


&&

FOR REFERENCE...THE ENHANCED FUJITA TORNADO SCALE CLASSIFIES TORNADOES INTO
THE FOLLOWING CATEGORIES:

EF0...WIND SPEEDS 65 TO 85 MPH.
EF1...WIND SPEEDS 86 TO 110 MPH.
EF2...WIND SPEEDS 111 TO 135 MPH.
EF3...WIND SPEEDS 136 TO 165 MPH.
EF4...WIND SPEEDS 166 TO 200 MPH.
EF5...WIND SPEEDS GREATER THAN 200 MPH.
Tornado tracks above estimated with help of IowaHelicoper.com and various county Emergency Managers.  Thank you! Click on the images for larger versions.


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