Saturday, September 28, 2024

Hurricane Helene's remnants to impact the state line this weekend

 Since landfall Hurricane Helene has made quite a name for itself, as it's impacted much of the Southeast and Appalachian areas over the late week. In its wake it's brought incredible storm surge, tornadoes, high winds, and record rainfall to many locations causing millions and possibly billions of dollars' worth of damage by the time it is all said and done. Although it's not as strong as it once was, Hurricane Helene's post tropical remnants will be felt here along the state line the next few days.

Taking a broad look at the cyclone it's pretty easy to see where it exactly is right now, with it centered over Kentucky and Indiana, Helene's remnants are expected to stall and weaken through the weekend. But with increased moisture and a high-pressure gradient at the surface this will increase cloud cover and winds for much of the state line.

Starting with wind gusts, it's important to understand how the pressure gradient at the surface impacts wind speeds. Wind most often moves from higher to lower pressure and when areas of lower pressure are tightly packed together this causes the wind to really want to move towards the lower pressure. Within Hurricane's or remnants areas of lower pressure are often very compact which often causes the very high wind speeds.

So, with Helene's remnants just to our south our pressure gradient will be quite high pointing to the south so we will be feeling strong Northeasterly wind for much of the weekend.

Throughout Saturday, winds will be consistent from Northeast anywhere from 10-20 mph with some gusts getting to 25 mph and possibly even higher. This will persist into Sunday where gusts may not be as strong, but expect winds of once again 10-20 mph with some gusts getting close to 25 mph. This will be the first "fall wind" feel although it really isn't related to fall like weather at all.
As well as wind cloud cover from Helene's remnants complicates the forecast for the state line. With higher moisture to our Southeast closer to the center of the low cloud cover will be much thicker with rain chances higher as well. Moisture to the eat will be concentrated more near the surface helping fuel precipitation chances while we'll remain mostly dry.
This will begin to break up Sunday but as of now Saturday's temperatures will be highly influenced on just how much cloud cover, we get from these remnants. With a tight gradient of moisture set up just along the state line, some areas may be under a heavy deck of clouds while some may not see clouds at all! Areas with no clouds today will most likely be just a bit warmer in terms of temperatures.
Throughout the weekend though, we will stay in the upper 70's with breezy conditions continuing. We will stay dry through the time as well with the highest precipitation chances staying to the south and east mainly along the I-80 corridor. But expect at least partly cloudy to mostly sunny skies through the weekend!

 

 

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