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Public Information Statement
National Weather Service Chicago IL
1055 PM CDT Sat Apr 1 2023 /1155 PM EDT Sat Apr 1 2023/

...NWS Damage Survey for March 31, 2023 Tornado Event Update #1...

Last Updated: 10:55 PM CDT April 1, 2023

This updated Public Information Statement includes new preliminary
damage survey results from Lee County, IL and preliminary tornado
confirmations and ratings from other locations where damage
surveys were recently conducted. As of now, a total of 12 
tornadoes have been confirmed within the NWS Chicago forecast 
area, though additional investigation is ongoing into other
locations of potential tornado damage.


.Davis Junction to Belvidere...

Rating:                 EF-1
Estimated Peak Wind:    100 mph
Path Length /statute/:  27.7 miles
Path Width /maximum/:   900 yards
Fatalities:             1
Injuries:               40

Start Date:             03/31/2023
Start Time:             07:24 PM CDT
Start Location:         2 SE Stillman Valley / Ogle County / IL
Start Lat/Lon:          42.0723 / -89.1497

End Date:               03/31/2023
End Time:               07:49 PM CDT
End Location:           4 S Capron / Boone County / IL
End Lat/Lon:            42.3296 / -88.7382

Survey Summary:
The Davis Junction to Belvidere tornado touched down in the
northeast portion of Ogle county southwest of Davis Junction at
724 PM CDT. The tornado tracked northeast through the village of
Davis Junction where it caused generally EF-0 damage with isolated
EF-1 damage to a single family home on the north side of town. The
tornado continued northeast into southeastern Winnebago County
causing generally EF-0 damage to multiple farms as the tornado
reached its widest extent of about half a mile. The tornado then
continued into Boone County causing damage to farms. As the
tornado neared Belvidere, the width decreased to about a quarter
of a mile but briefly intensified near the central business
district. Peak winds estimated at about 100 mph occurred at the
Apollo Theatre where a portion of the roof collapsed, causing 1
fatality and 40 injuries. The tornado continued northeast into
rural areas of Boone County causing EF-0 damage until lifting near
Orth Road and Capron Road at about 7:49 PM CDT.


.Amboy Area...

Rating:                 EF-2
Estimated Peak Wind:    115 mph
Path Length /statute/:  7.2 miles
Path Width /maximum/:   150 yards
Fatalities:             0
Injuries:               0

Start Date:             03/31/2023
Start Time:             07:10 PM CDT
Start Location:         4 SSE Amboy / Lee County / IL
Start Lat/Lon:          41.6577 / -89.2879

End Date:               03/31/2023
End Time:               07:17 PM CDT
End Location:           2.4 NW West Brooklyn / Lee County / IL
End Lat/Lon:            41.7200 / -89.1818

This tornado began in the Woodhaven Lakes campground and tracked 
across U.S. Highway 52 between Amboy and Sublette. This tornado 
produced substantial and concentrated tree damage along its 
track, with several dozen large trees snapped and many branches 
sheared off. Damage was clearly in a convergent pattern. Two 
trees were downed on one homestead that was basically demolished. 
Another nearby homestead had a large garage completely destroyed. 
The tornado gradually waned in intensity as it crossed Shaw Road. 


.West Brooklyn...

Rating:                 EF-1
Estimated Peak Wind:    95 mph
Path Length /statute/:  7.8 miles
Path Width /maximum/:   75 yards
Fatalities:             0
Injuries:               0

Start Date:             03/31/2023
Start Time:             07:14 PM CDT
Start Location:         0.5 S Sublette / Lee County / IL
Start Lat/Lon:          41.6381 / -89.2287

End Date:               03/31/2023
End Time:               07:21 PM CDT
End Location:           2 NE West Brooklyn / Lee County / IL
End Lat/Lon:            41.7106 / -89.1141

This tornado appeared to begin just south of Sublette as it
crossed U.S. Highway 52, snapping multiple wooden utility poles.
This tornado then increased in intensity as it entered the
community of West Brooklyn. It downed several large trees, tore
the roof of a bank in downtown, and folded an approximately 120 
ft tall tower. One of the wooden beams from the roof of the bank 
was impaled into a garage roof to its north-northeast. This
tornado weakened prior to crossing Illinois Highway 251.


.Additional Tornadoes...

In addition to the three tornadoes listed above, the following
tornadoes have also been confirmed:

-Near Baileyville, IL (Ogle County): rating TBD
-Machesney Park, IL (Winnebago County): EF-1
-Caledonia/Poplar Grove, IL (Boone County): rating TBD
-Near Wellington, IL (Iroquois County): EF-1
-Near Stockland, IL (Iroquois County): EF-1
-Lombard to Addison, IL (DuPage County): EF-1
-Near Oxford, IN (Benton County): EF-2
-Near Fowler, IN (Benton County): EF-2
-Near Remington, IN (Benton and Jasper counties): EF-1

Additional information on these tornadoes will be provided in the
coming days. Note that these ratings are subject to change.


.Other Locations to be Surveyed...

Over the coming days, our office also plans to finish/conduct
additional damage surveys in the following locations (note that
this is not necessarily an exhaustive list):

-Merrillville, IN
-Rockford, IL
-Batavia, IL
-Plainfield, IL
-Plano/Montgomery, IL
-Frankfort/Richton Park/Park Forest, IL
-Minooka/Channahon, IL
-Valparaiso, IN
-Rural southwest Lee County, IL
-Rural northern Boone County, IL
-Harvard, IL area

&&

EF Scale: The Enhanced Fujita Scale classifies tornadoes into the
following categories:

EF0...Weak......65 to 85 mph
EF1...Weak......86 to 110 mph
EF2...Strong....111 to 135 mph
EF3...Strong....136 to 165 mph
EF4...Violent...166 to 200 mph
EF5...Violent...>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.

$$

NWS Chicago