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NOUS43 KDMX 241442
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IAZ004>007-015>017-023>028-033>039-044>050-057>062-070>075-
081>086-092>097-250245-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
942 AM CDT FRI JUL 24 2026
..NWS DAMAGE SURVEY FOR 07/20/2026 TORNADO EVENT
OVERVIEW
TWO SHORT TORNADO PATHS HAVE BEEN IDENTIFIED IN NORTHERN CENTRAL
IOWA FROM MONDAY'S SEVERE WEATHER EVENT. THE FIRST TORNADO FORMED
NEAR CHAPIN, IA PRODUCED SEVERE ROOF DAMAGE TO A SINGLE FAMILY
RESIDENCE, TREE DAMAGE, AND MINOR DAMAGE TO A GRAIN ELEVATOR ON
THE SOUTH END OF TOWN. EAST OF THE GRAIN ELEVATOR THE DAMAGE
PATTERN BECAME MUCH MORE INTERMITTENT AS EVIDENT IN A EMA
PROVIDED DRONE DATA. HOWEVER, AT ABOUT 0.5 MILES EAST OF TOWN
UNIQUE CONVERGENT DAMAGE SIGNATURE WAS EVIDENT IN THE CORN FIELD,
WHICH WAS THE END OF THE TORNADO TRACK.
THE SECOND TORNADO FORMED ABOUT 1 MILE NORTHWEST OF AUSTINVILLE
AND TRAVELED FOR ABOUT ONE MILE TO THE SOUTHEAST BEFORE LIFTING
JUST WEST OF THE TOWN. A NEWLY BUILT FARM OUTBUILDING WAS
DESTROYED; ALONG WITH OTHER DAMAGE TO A BARN AND SILO. A
CONVERGENT DATA PATTERN WAS NOTED IN EMA PROVIDED DRONAGE DATA IN
THE CORN FIELDS ADJACENT TO THE FARMSTEAD.
TORNADO #1 - CHAPIN, IA
RATING: EF-1
ESTIMATED PEAK WIND: 110 MPH
PATH LENGTH /STATUTE/: 0.38 MILES
PATH WIDTH /MAXIMUM/: 25 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 07/20/2026
START TIME: 3:35 PM CDT
START LOCATION: CHAPIN / FRANKLIN COUNTY / IA
START LAT/LON: 42.8335 / -93.2218
END DATE: 07/20/2026
END TIME: 3:36 PM CDT
END LOCATION: 0.5 EAST OF CHAPIN
END LAT/LON: 42.8343 / -93.215
TORNADO #2 - 1 NW OF AUSTINVILLE, IA
RATING: EF-1
ESTIMATED PEAK WIND: 100 MPH
PATH LENGTH /STATUTE/: 0.9 MILES
PATH WIDTH /MAXIMUM/: 25 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 07/20/2026
START TIME: 3:51 PM CDT
START LOCATION: 1 NW OF AUSTINVILLE / BUTLER COUNTY / IA
START LAT/LON: 42.5961 / -92.9879
END DATE: 07/20/2026
END TIME: 3:53 PM CDT
END LOCATION: 0.5 W OF AUSTINVILLE / BUTLER COUNTY / IA
END LAT/LON: 42.5879 / -92.9743
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.
HAHN
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