381
NOUS43 KMKX 192118
PNSMKX
WIZ046-047-051-052-056>060-062>072-200930-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
418 PM CDT WED AUG 19 2026
..NWS DAMAGE SURVEY FOR 08/18/2026 DAMAGING WINDS & TORNADO
SCATTERED SEVERE THUNDERSTORMS DEVELOPED ALONG A COLD FRONT DURING
THE AFTERNOON AND EVENING HOURS OF AUGUST 18, 2026, TRACKING FROM
CENTRAL WISCONSIN SOUTHEAST TOWARD THE MILWAUKEE METRO AREA.
THUNDERSTORMS PRODUCED AREAS OF STRAIGHT LINE WIND DAMAGE ALONG
THEIR PATH, WITH SEVERAL AREAS OF RADAR-INDICATED ROTATION
PROMPTING TORNADO WARNINGS. SURVEYS CONDUCTED IN AREAS OF RADAR-
INDICATED ROTATION DISCOVERED PRIMARILY 60-80 MPH STRAIGHT LINE
WIND DAMAGE, WITH SPORADIC POCKETS OF DIVERGENT TREE FALL POINTING
TO A SERIES OF DOWNBURSTS FROM WESTERN WASHINGTON COUNTY
SOUTHEAST INTO WAUKESHA COUNTY AND THE MILWAUKEE METRO. A BRIEF
TORNADO PATH WAS FOUND BETWEEN THE COMMUNITIES OF RICHFIELD AND
COLGATE IN FAR SOUTHERN WASHINGTON COUNTY. DETAILS REGARDING THE
TORNADO PATH CAN BE FOUND BELOW.
COLGATE
RATING: EF0
ESTIMATED PEAK WIND: 80 MPH
PATH LENGTH /STATUTE/: 0.41 MILES
PATH WIDTH /MAXIMUM/: 50 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 08/18/2026
START TIME: 06:32 PM CDT
START LOCATION: 5 WSW GERMANTOWN / WASHINGTON COUNTY / WI
START LAT/LON: 43.2221 / -88.2294
END DATE: 08/18/2026
END TIME: 06:34 PM CDT
END LOCATION: 5 WSW GERMANTOWN / WASHINGTON COUNTY / WI
END LAT/LON: 43.2209 / -88.2214
SURVEY SUMMARY:
DAMAGE SURVEY DISCOVERED A SHORT BUT CONTINUOUS AREA OF CONVERGENT
& LOFTED TREE DAMAGE EXTENDING FROM JUST EAST OF THE INTERSECTION
OF TIMBER STONE WAY & ELMWOOD ROAD EAST-SOUTHEAST TO A RESIDENCE
NEAR THE INTERSECTION OF ELMWOOD ROAD AND SCENIC ROAD. STRUCTURAL
DAMAGE WAS LIMITED ALONG THE SHORT DAMAGE PATH, THOUGH DENTED
SIDING AND A BLOWN OUT WINDOW WERE OBSERVED. MAXIMUM ESTIMATED
WIND SPEED OF 80 MPH WAS DETERMINED FROM THE UPROOTING OF
MULTIPLE MATURE AND HEALTHY HARDWOOD TREES.
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.
QUIGLEY/GAGAN
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