Strong to severe storms developed during the afternoon and evening hours on Sunday over eastern Iowa and northeast Missouri. These storms produced damaging winds with speeds between 60 to 70 mph at times and small hail. Numerous tree damage reports and damaged buildings were reported with these storms. A storm survey team determined a tornado track from south of Hedrick northeast to 4 miles west/southwest of Cosgrove. The tornado was rated EF-1.
...NWS DAMAGE SURVEY FOR 04/27/14 TORNADO EVENT - UPDATED... .OVERVIEW...UPDATED TRACK INFORMATION FOR NEAR CONTINUOUS LONG TRACK TORNADO IN WAPELLO...KEOKUK...IOWA AND JOHNSON COUNTIES. .WAPELLO...KEOKUK...IOWA...AND JOHNSON COUNTY TORNADO... RATING: EF-1 ESTIMATED PEAK WIND: 110 MPH PATH LENGTH /STATUTE/: 46 MILES PATH WIDTH /MAXIMUM/: 1600 YARDS FATALITIES: 2 INJURIES: 0 START DATE: APRIL 27...2014 START TIME: 3:20 PM CDT START LOCATION: 3.45 MILES EAST OF HIGHLAND CENTER START LAT/LON: 41.1203 / -92.3064 END DATE: APRIL 27...2014 END TIME: 4:06 PM CDT END LOCATION: 4.2 MILES SOUTH OF OXFORD END LAT/LON: 41.6601 / -91.7825 SURVEY SUMMARY: NWS STORM SURVEY TEAMS FROM BOTH DAVENPORT AND DES MOINES DETERMINED THAT A TORNADO DEVELOPED IN FAR NORTHERN WAPELLO COUNTY...CROSSED KEOKUK COUNTY AND SOUTHEASTERN IOWA COUNTY...AND ENDED IN RURAL JOHNSON COUNTY. THIS LONG TRACK TORNADO STARTED EAST OF HIGHLAND CENTER AND TRAVELED AT ABOUT 60 MPH TO THE NORTHEAST. THE CIRCULATION WAS INITIALLY VERY BROAD AND BEGAN TO TIGHTEN AS IT PROGRESSED TO THE NORTHEAST. ALONG THE PATH...A NEAR CONTINUOUS DAMAGE PATH WAS FOUND WITH DAMAGE PRIMARILY TO OUTBUILDINGS...TREES...AND POWER POLES. IN MARTINSBURG...A MOBILE HOME WAS PUSHED OFF ITS BASE. TWO FATALITIES OCCURRED...ONE WEST OF MARTINSBURG AND ONE NORTH OF KINROSS. BOTH FATALITIES WERE ASSOCIATED WITH OUTBUILDINGS THAT WERE DESTROYED.
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PRELIMINARY LOCAL STORM REPORT...SUMMARY