Freeze Watch issued April 19 at 3:49AM EDT until April 21 at 10:00AM EDT by NWS Wilmington (details ...)
...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH
WEDNESDAY MORNING...
* WHAT...Sub-freezing temperatures as low as 29 possible.
* WHERE...Portions of East Central and Southeast Indiana and
Central and West Central Ohio.
* WHEN...From late Tuesday night through Wednesday morning.
* IMPACTS...Frost and freeze conditions could kill crops, other
sensitive vegetation and possibly damage unprotected outdoor
plumbing.
* ADDITIONAL DETAILS...Another night of sub-freezing temperatures
is likely Wednesday night.