852
NOUS43 KLSX 151848
PNSLSX
ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027-
034>036-041-042-047>052-059>065-072>075-084-085-099-160100-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
148 PM CDT FRI MAY 15 2026
..NWS DAMAGE SURVEY FOR 05/16/25 TORNADO EVENT - UPDATE
UPDATE
CHANGES TO THE TORNADO THAT PASSED THROUGH
ST. LOUIS COUNTY, ST. LOUIS CITY, AND MADISON COUNTY
IN IL ON 05/16/25 HAVE BEEN MADE.
.ST. LOUIS TORNADO
RATING: EF3
ESTIMATED PEAK WIND: 152 MPH
PATH LENGTH /STATUTE/: 12.29 MILES
PATH WIDTH /MAXIMUM/: 3168 YARDS
FATALITIES: 4
INJURIES: 38
START DATE: 05/16/2025
START TIME: 02:39 PM CDT
START LOCATION: 1 W CLAYTON / ST. LOUIS COUNTY / MO
START LAT/LON: 38.6439 / -90.3466
END DATE: 05/16/2025
END TIME: 02:53 PM CDT
END LOCATION: 1 WNW GRANITE CITY / MADISON COUNTY / IL
END LAT/LON: 38.7197 / -90.1499
SURVEY SUMMARY:
THE TORNADO TOUCHED DOWN IMMEDIATELY EAST OF INTERSTATE 170 NEAR
FOREST PARK PARKWAY, QUICKLY REACHING EF-1 STRENGTH AS IT MOVED
EASTWARD. AS IT MOVED INTO THE FOREST PARK, THE TORNADO BEGAN TO
WIDEN AND SHIFT TO THE NORTHEAST, REACHING EF-2 STRENGTH
IMMEDIATELY NORTH OF THE PARK. SHORTLY THEREAFTER, THE TORNADO
REACHED ITS MAXIMUM INTENSITY (EF-3, 152 MPH WINDS) AND WIDTH
(1.8 MILES) AS IT MOVED NORTH OF DELMAR BOULEVARD, BEFORE BRIEFLY
FALLING BACK TO EF-2 STRENGTH. THE TORNADO AGAIN REACHED EF-
3 INTENSITY THROUGH PORTIONS OF FOUNTAIN PARK AND THE GREATER
VILLE, WITH ITS WIDTH NARROWING TO 1.4 MILES. ADDITIONAL
WIDESPREAD EF-2 DAMAGE WAS SURVEYED THROUGH O FALLON AND O FALLON
PARK. THE TORNADO BEGAN TO QUICKLY DISSIPATE AS IT REACHED THE
MISSISSIPPI RIVER, FALLING TO EF-1 STRENGTH AND THE WIDTH
DROPPING BELOW 1 MILE. THE TORNADO THEN ENDED ON THE NORTH SIDE
OF GRANITE CITY. IN ADDITION TO A GROUND SURVEY, HI-RES AERIAL
IMAGERY FROM THE MOSAVE COALITION AND VEXCEL SATELLITE IMAGERY
WAS USED TO DETERMINE DAMAGE EXTENT.
.MADISON COUNTY TORNADO
RATING: EF1
ESTIMATED PEAK WIND: 107 MPH
PATH LENGTH /STATUTE/: 11.64 MILES
PATH WIDTH /MAXIMUM/: 525 YARDS
FATALITIES: 0
INJURIES: 0
START DATE: 05/16/2025
START TIME: 02:50 PM CDT
START LOCATION: 1 SW GRANITE CITY / MADISON COUNTY / IL
START LAT/LON: 38.7026 / -90.1526
END DATE: 05/16/2025
END TIME: 03:05 PM CDT
END LOCATION: 1 W EDWARDSVILLE / MADISON COUNTY / IL
END LAT/LON: 38.7967 / -89.9756
SURVEY SUMMARY:
A SECOND TORNADO DEVELOPED AS THE ST. LOUIS TORNADO WAS
DISSIPATING, TOUCHING DOWN IN GRANITE CITY NEAR NIEDRINGHAUS
AVENUE AND 19TH STREET. THIS TORNADO REMAINED AT EF-0 INTENSITY
AS IT TRACKED TO THE NORTHEAST. AS THE TORNADO MOVED NORTH OF
PONTOON BEACH, IT BRIEFLY STRENGTHENED TO EF-1 STRENGTH. THE
TORNADO CONTINUED TO THE NORTHEAST, CROSSING THE I-255/I-
270 INTERCHANGE, INTENSIFYING TO EF-1 STRENGTH AS IT MOVED TOWARD
AND JUST SOUTH OF SOUTHERN ILLINOIS UNIVERSITY-EDWARDSVILLE. THE
TORNADO THEN DISSIPATED AS IT MOVED INTO SOUTHWESTERN
EDWARDSVILLE. IN ADDITION TO A GROUND SURVEY, HI-RES AERIAL
IMAGERY FROM THE MOSAVE COALITION AND VEXCEL SATELLITE IMAGERY
WAS USED TO DETERMINE DAMAGE EXTENT.
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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