The radar above showed the storm moving into southern Butler and northern Grundy Counties. The small red area east of Ackley was to be where the tornado would come out from. At 4:46pm, the NWS in Des Moines reissued the tornado warning specifically to Butler and Northern Grundy Counties
BULLETIN – EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
446 PM CDT SUN MAY 25 2008
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR…
NORTHERN GRUNDY COUNTY IN CENTRAL IOWA…
SOUTHEASTERN BUTLER COUNTY IN NORTH CENTRAL IOWA…
* UNTIL 530 PM CDT.
* AT 441 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 7 MILES
SOUTHWEST OF APLINGTON…OR 33 MILES WEST OF WATERLOO…MOVING
NORTHEAST AT 36 MPH.
* THE TORNADO WILL BE NEAR…
APLINGTON BY 455 PM CDT…
PARKERSBURG BY 500 PM CDT…
ALLISON BY 510 PM CDT…
SHELL ROCK AND CLARKSVILLE BY 520 PM CDT…
THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT…OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR…SEEK SHELTER IN A REINFORCED BUILDING.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT SUNDAY EVENING FOR
NORTHWESTERN IOWA.
Two minutes later the tornado dropped two miles south of Aplington moving to the east. The NWS issued a statement 3 minutes after touchdown,
IAC023-075-252230-
/O.CON.KDMX.TO.W.0013.000000T0000Z-080525T2230Z/
BUTLER IA-GRUNDY IA-
451 PM CDT SUN MAY 25 2008
…A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR NORTHERN
GRUNDY AND SOUTHERN BUTLER COUNTIES…
AT 450 PM CDT…TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED NEAR APLINGTON…OR 30 MILES WEST OF WATERLOO…
MOVING NORTHEAST AT 33 MPH.
THE TORNADO WILL BE NEAR…
PARKERSBURG BY 500 PM CDT…
8 MILES NORTHWEST OF STOUT BY 505 PM CDT…
8 MILES SOUTHEAST OF ALLISON AND 8 MILES NORTHWEST OF NEW HARTFORD
BY 515 PM CDT…
SHELL ROCK AND 6 MILES SOUTHEAST OF CLARKSVILLE BY 525 PM CDT…
AT 448 PM…SPOTTERS REPORTED A CONFIRMED TORNADO AT THE
INTERSECTION OF COUNTY ROAD T19 AND HIGHWAY 57 IN BUTLER
COUNTY…HEADING TOWARD APPLINGTON.
At 4:58 as the tornado neared the south side of Parkersburg, the NWS issued a statement once more
IAC023-075-252230-
/O.CON.KDMX.TO.W.0013.000000T0000Z-080525T2230Z/
BUTLER IA-GRUNDY IA-
458 PM CDT SUN MAY 25 2008
…A TORNADO WARNING REMAINS IN EFFECT UNTIL 530 PM CDT FOR NORTHERN
GRUNDY AND SOUTHERN BUTLER COUNTIES…
AT 455 PM CDT…TRAINED WEATHER SPOTTERS REPORTED A TORNADO. THIS
TORNADO WAS LOCATED NEAR PARKERSBURG…OR 25 MILES WEST OF
WATERLOO…MOVING NORTHEAST AT 40 MPH.
THE TORNADO WILL BE NEAR…
NEW HARTFORD BY 510 PM CDT…
SHELL ROCK AND 9 MILES SOUTHEAST OF CLARKSVILLE BY 515 PM CDT…
AT 452…A SPOTTER REPORTED A LARGE TORNADO NEAR THE INTERSECTION OF
HIGHWAY D17 AND HIGHWAY 14.
MULTIPLE TORNADOES ARE FORMING EAST OF APLINGTON.
THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS
STORM IS CAPABLE OF PRODUCING STRONG TO VIOLENT TORNADOES. IF YOU ARE
IN THE PATH OF THIS TORNADO…TAKE COVER IMMEDIATELY!
A minute later (4:59pm) the tornado swept through the south side of Parkersburg.
The NWS issued a new warning for Black Hawk and Bremer County at 5:04pm
BULLETIN – EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
504 PM CDT SUN MAY 25 2008
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR…
NORTHERN BLACK HAWK COUNTY IN NORTHEAST IOWA…
BREMER COUNTY IN NORTHEAST IOWA…
* UNTIL 600 PM CDT.
* AT 459 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A TORNADO 13 MILES WEST OF JANESVILLE…OR 19 MILES WEST OF
WATERLOO…MOVING NORTHEAST AT 33 MPH.
* THE TORNADO WILL BE NEAR…
JANESVILLE BY 520 PM CDT…
WAVERLY BY 525 PM CDT…
DENVER BY 535 PM CDT…
READLYN AND TRIPOLI BY 545 PM CDT…
ORAN BY 555 PM CDT…
SUMNER BY 600 PM CDT…
THIS THUNDERSTROM HAS A HISTORY OF PRODUCING LARGE TORNADOES IN THE
APLINGTON AREA. A LARGE TORNADO HAS BEEN REPORTED EAST OF APLINGTON.
THIS IS A HAZARDOUS SITUATION. SEEK SHELTER IN A BASEMENT…OR IN AN
INTERIOR ROOM. STAY AWAY FROM WINDOWS. IF YOU ARE OUTSIDE OR IN A
CAR…SEEK SHELTER IN A REINFORCED BUILDING.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR IOWA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM CDT
SUNDAY EVENING FOR NORTHWESTERN IOWA.
The tornado continued slightly north of east heading toward New Hartford hitting a subdivision just north of the town around 5:10pm.
The tornado moved into Black Hawk County around 5:20pm and just missed the north end of Cedar Falls and Waterloo by less than a mile as it went through the countryside of northern Black Hawk County.
IAC013-017-252245-
/O.CON.KDMX.TO.W.0015.000000T0000Z-080525T2245Z/
BREMER IA-BLACK HAWK IA-
531 PM CDT SUN MAY 25 2008
…A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR BLACK
HAWK AND SOUTHERN BREMER COUNTIES…
AT 526 PM CDT…NATIONAL WEATHER SERVICE DOPPLER RADAR AND STORM
SPOTTERS WERE TRACKING A LARGE AND EXTREMELY DANGEROUS TORNADO. THIS
TORNADO WAS LOCATED NEAR CEDAR FALLS…OR 7 MILES NORTHWEST OF
WATERLOO…MOVING EAST AT 33 MPH.
THE TORNADO WILL BE NEAR…
EVANSDALE BY 540 PM CDT…
ELK RUN HEIGHTS…RAYMOND…6 MILES SOUTHWEST OF DUNKERTON AND 8
MILES NORTH OF GILBERTVILLE BY 545 PM CDT…
THIS IS AN EXTREMELY DANGEROUS AND LIFE THREATENING SITUATION. THIS
STORM IS CAPABLE OF PRODUCING STRONG TO VIOLENT TORNADOES. IF YOU ARE
IN THE PATH OF THIS TORNADO…TAKE COVER IMMEDIATELY!
AT 528 PM…SPOTTERS REPORTED A LARGE TORNADO AT THE INTERSECTION OF
557 AND HIGHWAY 218 IN BLACKHAWK COUNTY. THE TORNADO IS NOW IN THE
NORTHEAST SIDE OF CEDAR FALLS AND HEADED TO NORTH SIDE OF WATERLOO.
The tornado significantly widened at this point to well over a mile producing EF2 and greater damage as it neared the town of Dunkerton. 3 miles west of Dunkerton, the tornado turned more northeast and missed the town by 2 miles to the north as it then headed toward Fairbank. The tornado lifted just before it was to enter into Buchanan County, but the storm was far from over.
Continued in Part #3
NWS Des Moines’ Report on the Parkersburg-New Hartford Tornado