Excessive Heat Warning issued July 18 at 11:03AM EDT until July 20 at 8:00PM EDT by NWS Wilmington (details ...)
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 2 PM THIS
AFTERNOON TO 8 PM EDT SATURDAY...
* HEAT INDEX VALUES...Around 100 today, and near or above 105
Friday and Saturday due to temperatures in the mid 90s, and
dewpoints in the mid 70s.
* TIMING...This afternoon through Saturday evening. Very little
relief is expected during the night with low temperatures only
falling into the middle and upper 70s.
* IMPACTS...Heat stroke, heat exhaustion and other heat related
illnesses will be possible, especially if you spend a
significant amount of time outdoors, or are involved in any
strenuous outdoor activity. The cumulative impacts of heat on
the human body can be significant when consecutive days of
excessive heat occur.