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Public Information Statement
National Weather Service Des Moines IA
820 PM CDT Fri May 24 2024

...NWS Damage Survey for 05/21/2024 Tornado Event - Update #4...

.Update...Four additional tornadoes have been identified from
further analysis of the the May 21 tornado event.

...Exira Tornado...

Rating:                 EF1
Estimated Peak Wind:    95 mph
Path Length /statute/:  7.33 miles
Path Width /maximum/:   100 yards
Fatalities:             0
Injuries:               0

Start Date:             05/21/2024
Start Time:             03:09 PM CDT
Start Location:         2 SSE Brayton / Audubon County / IA
Start Lat/Lon:          41.5127 / -94.9085

End Date:               05/21/2024
End Time:               03:18 PM CDT
End Location:           2 ENE Exira / Audubon County / IA
End Lat/Lon:            41.5994 / -94.8298

...Arbor Hill Tornado...

Rating:                 EF2
Estimated Peak Wind:    115 mph
Path Length /statute/:  11.87 miles
Path Width /maximum/:   200 yards
Fatalities:             0
Injuries:               0

Start Date:             05/21/2024
Start Time:             03:41 PM CDT
Start Location:         3 ENE Greenfield / Adair County / IA
Start Lat/Lon:          41.3284 / -94.4039

End Date:               05/21/2024
End Time:               03:56 PM CDT
End Location:           4 S Dexter / Adair County / IA
End Lat/Lon:            41.4486 / -94.2434

Survey Summary:
As the Greenfield tornado began to dissipate northeast of Greenfield,
the storm cycled producing this tornado which extended into
northeast Adair County.

...Martensdale Tornado...

Rating:                 EF0
Estimated Peak Wind:    75 mph
Path Length /statute/:  1.04 miles
Path Width /maximum/:   40 yards
Fatalities:             0
Injuries:               0

Start Date:             05/21/2024
Start Time:             04:25 PM CDT
Start Location:         1 SW Martensdale / Warren County / IA
Start Lat/Lon:          41.3686 / -93.7454

End Date:               05/21/2024
End Time:               04:26 PM CDT
End Location:           Martensdale / Warren County / IA
End Lat/Lon:            41.3799 / -93.7323

Survey Summary:
Trees Downed in and near Martensdale.  TDS was observed on radar
verifying the tornado.

...Spring Hill Tornado...

Rating:                 EF0
Estimated Peak Wind:    75 mph
Path Length /statute/:  2.01 miles
Path Width /maximum/:   75 yards
Fatalities:             0
Injuries:               0

Start Date:             05/21/2024
Start Time:             04:28 PM CDT
Start Location:         2 WSW Spring Hill / Warren County / IA
Start Lat/Lon:          41.3997 / -93.6787

End Date:               05/21/2024
End Time:               04:32 PM CDT
End Location:           Spring Hill / Warren County / IA
End Lat/Lon:            41.4194 / -93.6503

Survey Summary:
Trees Down in and around Spring Hill.  TDS observed on radar to
verify the tornado.

&&

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.


$$