Averaging out the highs today over the viewing area, today's actual air temperatures ranked in the top 4 hottest days of 2018. The hottest day actually occurred around Memorial Day at 94-99.
Heat indices peaked at 102 in the viewing area, not close to the peak heat index of 111 observed back in early July & again in August. This late August-early September heat is the second such round of 90s since early August.
Although we will see an overall continuation of above normal temperatures through mid September, this was likely the hottest day until next summer.
Some scattered showers & storms will pass tonight & into tomorrow morning. There may be a break for a while, then some more later in the day.
These will tend to occur with the cold front sliding southward, then developing convergence along that front as the flow from TD Gordon interracts with it.
Highs tomorrow will run near 80 with still humid, but mostly cloudy conditions. Winds will run east to northeast at 10-15 mph, so there will be a nice breeze all day.
A wet, showery day is in store for Friday with perhaps an isolated rumble or two of thunder. It looks cloudy to mostly cloudy with highs in the 70s & east to southeast winds at 10-20 mph.
Note the center of TD Gordon in southern Missouri by Friday night.
Tropical Depression Gordon will move right through our area with center of it tracking just south of Greater Lafayette. Wind & heavy rainfall will be an issue. If it would track a bit more northwest of our area, then at least some tornado risk would be there, but with the current track tornado risk is extremely low to non-existent.
The surface pressure gradient between Tropical Depression Gordon & high pressure over Ontario to Quebec will result in strong, gusty east winds late Saturday night-Sunday morning.
Peak gusts of 35-45 mph are possible with sustained winds of 15-25 mph for several hours. Given the water load on branches from the rain & that kinds of wind, a few weakened limbs may come down. A couple/few isolated power outages are possible. Your patio furniture & trash cans may tip over & get tossed a bit, too.
A total of 2-6" of rainfall is possible Thursday-Sunday with a lot of this falling Saturday night-Sunday morning with Gordon. Currently, the heaviest totals still look to be in the south, but this could still change. Confidence is not exceptionally high on exactly where the band of heaviest rainfall is going to set up.
Next week looks good with highs near 80 to the mid 80s & lows near 60 with patchy fog in the mornings. There will be plenty of sun in the afternoon.
However, it will turn very warm to hot & humid by a week from this weekend (weekend of September 15-16). A few storms may bubble up in our southwestern counties with highs back into the 80s to 90 & dew points near 70.
Strong cold front near September 20 may bring some storms & then much cooler weather. In fact, with strong high pressure overhead, widespread 40s temperature are likely on the morning of September 21 or 22.