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IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-190315-

Public Information Statement
National Weather Service Quad Cities IA/IL
1007 AM CDT Tue Apr 18 2023

...NWS Damage Survey for 4/4/2023-4/5/2023 Tornado Event Update...

.Update...

Additional surveys found more tornadoes occurred with the 4/4 
morning supercell in the metro Quad Cities.  This unique supercell
produced 5 total tornadoes, 4 of them were in the metro area and one
of them was just east of Geneseo, IL.  Two more tornadoes are included
in this report and represent all the tornadoes that occurred from 12Z 
on 4/4 to 12Z on 4/5.

...Andalusia, IL Tornado...

Rating:                 EF1
Estimated Peak Wind:    105 mph
Path Length /statute/:  1.09 miles
Path Width /maximum/:   25 yards
Fatalities:             0
Injuries:               0

Start Date:             04/04/2023
Start Time:             09:36 AM CDT
Start Location:         3 ESE Buffalo / Rock Island County / IA
Start Lat/Lon:          41.4439 / -90.6632

End Date:               04/04/2023
End Time:               09:37 AM CDT
End Location:           4 SW Rock Island / Rock Island County / IL
End Lat/Lon:            41.4444 / -90.6422

Survey Summary:
Brief tornado caused sporadic damage to power poles, some trees
and to some houses on its 1 mile path.  Estimated wind speeds of
105 mph.  

.Rock Island Tornado...

Rating:                 EF1
Estimated Peak Wind:    95 mph
Path Length /statute/:  1.59 miles
Path Width /maximum/:   150 yards
Fatalities:             0
Injuries:               0

Start Date:             04/04/2023
Start Time:             09:41 AM CDT
Start Location:         1 N Rock Island / Rock Island County / IL
Start Lat/Lon:          41.4847 / -90.5782

End Date:               04/04/2023
End Time:               09:43 AM CDT
End Location:           2 NNE Blackhawk State Park / Rock Island County / IL
End Lat/Lon:            41.4907 / -90.5487

Survey Summary:
A brief tornado occurred in the City of Rock Island, Illinois.
The tornado knocked over and snapped large trees and produced
minor damage to several roofs. Widespread damaging straight-line
winds up to 90 mph also caused significant damage across the
city.

..John Deere Avenue Tornado...

Rating:                 EF1
Estimated Peak Wind:    100 mph
Path Length /statute/:  0.88 miles
Path Width /maximum/:   25 yards
Fatalities:             0
Injuries:               0

Start Date:             04/04/2023
Start Time:             09:48 AM CDT
Start Location:         1 SSW Moline / Rock Island County / IL
Start Lat/Lon:          41.4747 / -90.4945

End Date:               04/04/2023
End Time:               09:49 AM CDT
End Location:           1 SSE Moline / Rock Island County / IL
End Lat/Lon:            41.4711 / -90.4783

Survey Summary:
Brief EF1 tornado caused damage to trees and roofs across its
0.8 mile long path.  Eyewitness reports of the tornado and debris
aided in the identification of this tornado.

..Colona, IL Tornado...

Rating:                 EF2
Estimated Peak Wind:    115 mph
Path Length /statute/:  0.43 miles
Path Width /maximum/:   50 yards
Fatalities:             0
Injuries:               0

Start Date:             04/04/2023
Start Time:             09:57 AM CDT
Start Location:         1 W Colona / Henry County / IL
Start Lat/Lon:          41.4843 / -90.3682

End Date:               04/04/2023
End Time:               09:58 AM CDT
End Location:           Colona / Henry County / IL
End Lat/Lon:            41.4836 / -90.3601

Survey Summary:
A brief tornado developed Tuesday morning in Colona, Illinois,
and was embedded in a broader swath of damaging straight line
winds. The tornado moved through the northern portion of Colona,
and was on the ground for about a half mile. The tornado was
captured on video, ripping the entire roof off a gas station and
tossing it into a brick building just to the south. The front
wall of the building also collapsed. The tornado also uprooted
trees, and caused minor house damage.The tornado was rated a low-
end EF-2, with maximum winds around 115 mph.

..Geneseo, IL to Atkinson, IL Tornado...

Rating:                 EF2
Estimated Peak Wind:    115 mph
Path Length /statute/:  2.79 miles
Path Width /maximum/:   600 yards
Fatalities:             0
Injuries:               0

Start Date:             04/04/2023
Start Time:             10:15 AM CDT
Start Location:         2 ESE Geneseo / Henry County / IL
Start Lat/Lon:          41.4285 / -90.117

End Date:               04/04/2023
End Time:               10:19 AM CDT
End Location:           2 W Atkinson / Henry County / IL
End Lat/Lon:            41.4214 / -90.0653

Survey Summary:
A localized RFD surge on the south side of a broader HP supercell
RFD caused a tornado to form. The EF2 tornado with 115 MPH winds
begun just east of Geneseo at 10:15 AM.  The path had sporadic
damage and based on eye-witness reports it was a multiple vortex
tornado.  Different suction vortices caused damage to farm
buildings, trees, silos and houses along its 2.8 mile long path. 
Many trees were uprooted or snapped in different directions. 
Most houses had uplift of shingles.  Towards the end of the path,
the tornado strengthed just before it occluded.  EF2 damage was
found here as a power pole was snapped, 4 farm outbuildings were
destroyed and the roof on the house was lifted then put back down
on the house.  Many thanks to Henry County OEM for helping with
the survey.

..Industry, IL Tornado...

Rating:                 EF1
Estimated Peak Wind:    105 mph
Path Length /statute/:  8.31 miles
Path Width /maximum/:   350 yards
Fatalities:             0
Injuries:               0

Start Date:             04/04/2023
Start Time:             06:52 PM CDT
Start Location:         1 SSE Industry / McDonough County / IL
Start Lat/Lon:          40.3066 / -90.6002

End Date:               04/04/2023
End Time:               07:02 PM CDT
End Location:           2 WSW Table Grove / McDonough County / IL
End Lat/Lon:            40.361 / -90.4603

Survey Summary:
An EF1 tornado touched down south of Industry, Illinois near
highway 67 damaging barns, outbuildings, and snapping many large
hardwood trees. The tornado continued to track to the northeast
causing significant damage to several empty large grain bins and
destroying a portion of a roof of a house. Occasional damage was
found to trees, outbuildings, and grain bins across far east-
central McDonough County as the tornado appeared to be
dissipating just before the McDonough-Fulton County line

..Woodhull Tornado...

Rating:                 EF0
Estimated Peak Wind:    85 mph
Path Length /statute/:  3.12 miles
Path Width /maximum/:   50 yards
Fatalities:             0
Injuries:               0

Start Date:             04/05/2023
Start Time:             04:48 AM CDT
Start Location:         2 N Woodhull / Henry County / IL
Start Lat/Lon:          41.2061 / -90.3159

End Date:               04/05/2023
End Time:               04:53 AM CDT
End Location:           4 NE Woodhull / Henry County / IL
End Lat/Lon:            41.2251 / -90.2615

Survey Summary:
Brief tornado began just east of I-74 north of Woodhull damaging
trees, a few outbuildings, and a home in its path. Home lost some
shingles and partial roof on one side of the residence.  Large
tree branches snapped on farmstead property.

&&

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 events and publication in
NWS Storm Data.


$$