120
NOUS43 KARX 202047
PNSARX
IAZ030-210900-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE LA CROSSE WI
347 PM CDT MON APR 20 2026
..NWS DAMAGE SURVEY FOR THE APRIL 17 TORNADO EVENT 12
SE OF POSTVILLE
RATING: EFU
ESTIMATED PEAK WIND: UNKNOWN
PATH LENGTH /STATUTE/: 0.69 MILES
PATH WIDTH /MAXIMUM/: 20 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 04/17/2026
START TIME: 04:17 PM CDT
START LOCATION: 2 SW HARDIN / CLAYTON COUNTY / IA
START LAT/LON: 43.0569 / -91.5319
END DATE: 04/17/2026
END TIME: 04:19 PM CDT
END LOCATION: 2 SW HARDIN / CLAYTON COUNTY / IA
END LAT/LON: 43.0645 / -91.5231
SURVEY SUMMARY:
CHASER VIDEO SHOWED BRIEF TORNADO SOUTHEAST OF POSTVILLE. THIS
TORNADO IS NOT KNOWN TO HAVE ENCOUNTERED ANY DAMAGE INDICATORS.
THEREFORE, WE ARE UNABLE TO ASSIGN THE TORNADO A NUMERICAL RATING
AT THIS TIME.
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 EVENT AND PUBLICATION IN NWS
STORM DATA.
APF
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