Watch for areas of fog later tonight-tomorrow morning. Notice the dark blue/green areas showing up on the projection over our area. That is fog with projected visibility of less than 0.5 mile or you can only see 2640' or less. A football field length is 3,000', to put it into perspective. Not everyone will see that kind of low visibility, but some area will & even if you don't have that kind of fog at your house, you may run into it on your way to work. It should completely burn off by 9:30 a.m. & any very low clouds that develop with the fog should break & diminish.
An Excessive Heat Watch is in effect for all counties along & north of U.S. 24 & Benton County.
From the National Weather Service:
EXCESSIVE HEAT WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH
The National Weather Service in Northern Indiana has issued an
Excessive Heat Watch...which is in effect from Friday afternoon
through Saturday evening.
* Temperatures are expected to rise into the lower to mid 90s
Friday and Saturday with heat indices from around 100 to near
* The combination of hot temperatures and high humidity will
likely lead to an increased risk of heat related stress and
illness. The very young, the elderly, those without air
conditioning, and those participating in strenuous outdoor
activities will be the most susceptible.
* Car interiors can reach lethal temperatures in a matter of
The heat wave will begin to overspread us tomorrow & tend to peak Saturday with highs 90-95 & heat indices to 110. Remember to LOOK BEFORE YOU LOCK! Make sure in a rush that a child or pet is NOT left in a car for even a very brief amount of time.
Flooding t'storms will line up as a massive, elongated complex from northern Missouri to southwestern Indiana & western Kentucky tonight. Here, the outflow boundary from all of that may pop an isolated storm in our southwestern counties tomorrow, but capping will tend to take over & keep coverage at or below 20%.
Friday may have a random isolated t'storm in our southwestern counties, otherwise it will be dry, but oppressively hot.
It is that very heavy rainfall to our southwest & the recent rains here with "corn sweat" & lush vegetative growth that will contribute a significant amount to making this a dangerous round of heat. 90-95 is reasonably tolerable when the humidity is very low, but dew points of 76-81 will make for atrocious heat indices.
A few scattered storms are possible Saturday with even more Sunday, but it will still be HOT. T'Storm coverage may peak Sunday night &/or Monday.
Any storm that pop amidst the torrid heat & humidity Saturday-Sunday have the potential to produce sudden torrential rainfall that may lead to localized flash flooding, given thier slow movement. Also, a layer of mid-level dry air, despite a very moist low level of the troposphere will result in the potential of an isolated wet microburst or two.
Peaking t'storm coverage Sunday night &/or Monday may bring only an isolated severe storm or two perhaps. Locally-heavy rainfall is possible, but the main corridor of shear & wind fields in the troposphere for organized severe will be from South Dakota to Minnesota & Wisconsin.
Here, any of the most widespread t'storm development will tend to occur as individual t'storms or t'storm clusters merge & gell with each other or surging cold pools (from the rain-cooled air of t'storms) cause a large amalgamation or gelling of t'storms into a slowly-surging, thick line.