948
NOUS43 KDVN 112251
PNSDVN
IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-121100-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
551 PM CDT TUE AUG 11 2026
..NWS DAMAGE SURVEY FOR 08/11/2026 TORNADO EVENT
WEST OF GREELEY TORNADO
RATING: EF1
ESTIMATED PEAK WIND: 110 MPH
PATH LENGTH /STATUTE/: 2.41 MILES
PATH WIDTH /MAXIMUM/: 150 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 08/11/2026
START TIME: 07:31 AM CDT
START LOCATION: 4 SSW EDGEWOOD / DELAWARE COUNTY / IA
START LAT/LON: 42.5885 / -91.4335
END DATE: 08/11/2026
END TIME: 07:33 AM CDT
END LOCATION: 2 W GREELEY / DELAWARE COUNTY / IA
END LAT/LON: 42.5857 / -91.3867
SURVEY SUMMARY:
A HIGH-END EF1 WITH PEAK GUSTS OF 110 MPH CAUSED SIGNIFICANT
DAMAGE TO TWO FARMSTEADS AT THE BEGINNING OF ITS 2.4 MILE LONG
PATH. HERE TWO FARM OUTBUILDINGS WERE DESTROYED ALONG WITH
NUMEROUS SNAPPED TREES. A POWER POLE WAS ALSO SNAPPED AT THIS
LOCATION. THE TORNADO WAS ROUGHLY 150 YARDS WIDE AT THIS
LOCATION. AS THE TORNADO MOVED EAST, IT BEGAN TO BECOME SMALLER
CAUSING MOSTLY TREE DAMAGE.
SOUTHEAST OF GREELEY TORNADO
RATING: EF1
ESTIMATED PEAK WIND: 90 MPH
PATH LENGTH /STATUTE/: 1.49 MILES
PATH WIDTH /MAXIMUM/: 100 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 08/11/2026
START TIME: 07:44 AM CDT
START LOCATION: 2 SSE GREELEY / DELAWARE COUNTY / IA
START LAT/LON: 42.5608 / -91.3285
END DATE: 08/11/2026
END TIME: 07:45 AM CDT
END LOCATION: 3 ENE ONEIDA / DELAWARE COUNTY / IA
END LAT/LON: 42.5536 / -91.3014
SURVEY SUMMARY:
AN EF1 TORNADO, WITH MAX WIND SPEEDS OF 90 MPH CAUSED DAMAGE TO
TREES AND CROPS ACROSS IT'S 1.5 MILE LONG PATH. A HOOP
OUTBUILDING WAS FLUNG INTO THE SOUTHSIDE OF A FARM HOUSE CAUSING
DAMAGE TO WINDOWS AND EXTERIORS WALLS OF THE HOUSE. AT THIS
HOMESTEAD, ALL TREES WERE SNAPPED TO THE NORTH. JUST NORTH OF
THIS LOCATION CROPS AND OTHER BRANCHES WERE DOWNED TO THE SOUTH.
THE TORNADO WAS AROUND 100 YARD WIDE AT THIS LOCATION. AS THE
TORNADO TRACKED EAST, DAMAGE TO CROPS WERE NOTED.
4N OF EARLVILLE TORNADO
RATING: EF1
ESTIMATED PEAK WIND: 95 MPH
PATH LENGTH /STATUTE/: 2.63 MILES
PATH WIDTH /MAXIMUM/: 75 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 08/11/2026
START TIME: 07:45 AM CDT
START LOCATION: 2 E ONEIDA / DELAWARE COUNTY / IA
START LAT/LON: 42.5395 / -91.314
END DATE: 08/11/2026
END TIME: 07:47 AM CDT
END LOCATION: 2 WSW PETERSBURG / DELAWARE COUNTY / IA
END LAT/LON: 42.5371 / -91.2629
SURVEY SUMMARY:
AN EF1 TORNADO WITH MAX WIND SPEEDS OF 95 MPH CAUSED DAMAGE TO
TREES, A HOUSE AND A COUPLE OF FARM OUTBUILDINGS. A TREE FELL ON
A HOUSE HEAVILY DAMAGING A GARAGE. A LARGE TREE BRANCH WAS
EMBEDDED IN THE METAL ROOF OF THE HOUSE AND INTO A BEDROOM. AS
THE TORNADO TRACKED TO THE EAST, IT MAINLY CAUSED DAMAGE TO TREES
ALONG IT'S 2.6 MILE LONG PATH. TOWARDS THE MIDDLE OF IT'S PATH,
A FARM OUTBUILDING'S WEST WALL WAS PUSHED IN, CAUSING PART OF THE
ROOF TO BE REMOVED.
EF SCALE: THE ENHANCED FUJITA SCALE CLASSIFIES TORNADOES INTO THE
FOLLOWING CATEGORIES:
EF0.....65 TO 85 MPH
EF1.....86 TO 110 MPH
EF2.....111 TO 135 MPH
EF3.....136 TO 165 MPH
EF4.....166 TO 200 MPH
EF5.....>200 MPH
NOTE:
THE INFORMATION IN THIS STATEMENT IS PRELIMINARY AND SUBJECT TO
CHANGE PENDING FINAL REVIEW OF THE EVENTS AND PUBLICATION IN
NWS STORM DATA.
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