Hey folks...Happy Wednesday and Happy Hump Day across Kentuckiana. It's always nice to be halfway through the work week, especially for those of you with a short work week thanks to that 3 day Labor Day weekend. If you love the hot stuff, this is your kind of weather here in Kentuckiana. Afternoon highs have been into the low 90s the last few days after we saw that much needed break from the heat and humidity during the early part of the holiday weekend.
As mentioned in yesterday's post, the first few weeks of September are typically the "final window" for consistent 90 degree plus days across Central Kentucky and Southern Indiana and we are definitely fulfilling that here in 2016. A couple of reasons for this: 1) We've seen a big area of high pressure camped out over the eastern part of the Unties States allowing for plenty of sunshine and a return flow from the south to keep the heat and humidity in place. And maybe more importantly 2) it's really gotten dry across Kentuckiana over the last few weeks! After a pretty wet summer overall, the water faucet from Mother Nature has slowed to a trickle. With the drier ground and less surface moisture, it's been easier to heat things up around the area. Check out the graphics before.
Take a look at the 3 month rainfall departure across the area, and you can see by the brighter colors that it's been a wet summer in many locations, especially out across Western Kentucky, Southern Indiana and parts of Louisville Metro.
Contrast that to the rainfall departure from the last 2 weeks and you can see PLENTY of yellow on the map, indicating that it's been pretty dry across most of the area. Again...a dry ground is easier to heat up, so that contributes to those low 90s for highs, even though humidity levels haven't been off the chart.
Just to give you an idea of how 2016 has compared to the last few years as far as the number of days reaching at least the 90 degree mark or higher for afternoon highs, we are about right on par here in Louisville this year. The average number of 90 degree (plus) days are 41 annually and as of Tuesday were we at 42 and counting. This is the most we've seen since 2012 when that blazing hot summer saw a staggering 60 days with highs at least reaching 90 degrees.
For our sensible weather over the next few days, we've got a weak front sliding in Thursday so we could see a few pop-up storms during the heating of the afternoon late day. Highs will be in the low 90s with a touch of humidity around.
By Friday, a warm front will be in our neck of the woods, so the scattered thunderstorm chances will stick around, mainly during the first half of the day before the front moves northward. This should allow us to heat up again with those 90s staying put for the time being.
By this weekend, we'll finally begin to shake things up here in Kentuckiana with a stronger cold front scheduled to move through the Ohio Valley. This front will be a game changer with big changes for the second half of the weekend. The front will sweep not only the heat, but also the humidity out of the area, so after a stormy Saturday it looks to be quite delightful on Sunday with highs in the low 80s and very comfortable conditions.
Of course it is September so there are plenty of events going on around Kentuckiana this weekend including Chris Stapleton in concert at Waterfront Park in Louisville on Friday night, plus JD Shelbourne is hosting his 9th annual charity softball game to benefit Saint Jude's over in Taylorsville in Spencer County on Saturday at 2 P.M. on Saturday. I think we are in good shape for the concert on Friday evening here in Louisville, but it could be a little dicey for the softball game on Saturday as the cold front makes it run through the region.
Again if you like the hot weather, enjoy this while it lasts because the climatological clock is ticking as we rapidly head toward the middle of September. It won't be long before we cool down for good with fall just around the corner. Stay cool out there and have a wonderful rest of the week.
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Meteorologist T.G. Shuck