730
NOUS43 KDMX 012235
PNSDMX
IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-021045-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
535 PM CDT SAT APR 1 2023
..NWS DAMAGE SURVEY FOR 03/31/2023 TORNADO EVENT
TORNADO #1 - WAPELLO COUNTY NORTHEAST OF OTTUMWA
NOTE THIS TORNADO PATH EXTENDS INTO KEOKUK COUNTY AND THAT SURVEY
WILL BE SENT BY THE NWS QUAD CITIES.
THIS SURVEY ONLY COVERS THE WAPELLO COUNTY PORTION OF THE TORNADO
TRACK.
RATING: EF-2
ESTIMATED PEAK WIND: 135 MPH
PATH LENGTH /STATUTE/: 8.1 MILES
PATH WIDTH /MAXIMUM/: TBD
FATALITIES: 0
INJURIES: UNKNOWN
START DATE: 03/31/
START TIME: 03:37 PM CDT
START LOCATION: 4 NE OTTUMWA / WAPELLO COUNTY / IA
START LAT/LON: 41.062/-92.332
END DATE: 03/31/2023
END TIME: 03:50 PM CDT (ESTIMATED TIME CROSSED INTO KEOKUK CO)
END LOCATION: 12 NE OTTUMWA / WAPELLO COUNTY / IA
END_LAT/LON: 41.163/-92.234
SURVEY_SUMMARY: OPTIONAL:
LONG TRACK TORNADO BEGAN IN WAPELLO COUNTY NORTHEAST OF OTTUMWA
THEN TRACKED NORTHEAST INTO KEOKUK COUNTY. THE PRIMARY DAMAGE IN
WAPELLO COUNTY CONSISTED OF THREE HOMES AND ONE HOG CONFINEMENT
FACILITY. THE FIRST HOME LOST THE ENTIRE ROOF AND ONE EXTERNAL
WALL. THE FIRST FAILURE POINT WAS LIKELYTHE WIND ENTERING AND
LIFTING THE GARAGE WHICH THEN LED TO FAILURE OF THE ROOF. THE HOME
ONLY HAD STRAIGHT NAILED CONNECTIONS TO THE EXTERNAL WALLS SPACED
EVERY 18 INCHES AND LESS TO THE ROOF. AN UNOCCUPIED MOBILE HOME
ON THE PROPERTY WAS NOT WELL ANCHORED AND ROLLED TO TOTAL
DESTRUCTION. THIS LOCATION WAS RATED 110 MPH AND EF-1. TWO WELL
ANCHORED HOG CONFINEMENT BUILDINGS WERE TOTALLY DESTROYED AND WERE
RATED EF-2. THE TORNADO THEN IMPACTED A LOCATION WITH A WELL
BUILT 2 STORY BRICK HOUSE. THE HOUSE SUFFERED SOME ROOF AND WINDOW
DAMAGE AND A LOSS OF A GARAGE DOOR BUT SUSTAINED LITTLE OTHER
DAMAGE. OTHER DAMAGE INDICATORS AT THE SITE SUGGESTED EF-1 WINDS.
TOTAL DESTRUCTION OF A HOUSE OCCURRED JUST PRIOR TO THE TORNADO
EXITING THE COUNTY. THIS OLDER HOUSE SAT UNANCHORED TO THE
CONCRETE BLOCK BASEMENT. THE HOUSE WAS PUSHED OFF THE FOUNDATION
AND CRUMBLED. SOME TREES NEAR THE HOUSE AND A PROPANE TANK WERE
MOSTLY LEFT WITH LITTLE DAMAGE. A LARGER TREE DIRECTLY NEXT TO THE
HOUSE ON THE WIND SIDE HAD SEVERAL LARGE LIMBS REMOVED. DUE TO
ALL OF THESE REASONS, THE WIND AT THIS LOCATION HAS BEEN RATED AT
135 MPH, OR HIGH END EF-2.
EF0...WEAK......65 TO 85 MPH
EF1...WEAK......86 TO 110 MPH
EF2...STRONG....111 TO 135 MPH
EF3...STRONG....136 TO 165 MPH
EF4...VIOLENT...166 TO 200 MPH
EF5...VIOLENT...>200 MPH
NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENT AND PUBLICATION IN
NWS STORM DATA.
DONAVON/CARTER
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page