174 
NZUS97 KILN 141846
WRKAFD

.LONG TERM /SUNDAY THROUGH FRIDAY/... 
The main concern in the extended period, Sunday through Friday, will 
be the expected prolonged heat wave that we have been discussing 
over the last several days. 

A mid level ridge will begin to build northward into the middle Ohio 
Valley on Sunday. Low level flow will also become southerly. Thus, 
dewpoints will begin to creep upward as well as air temperatures. 
Highs will range from the upper 80s to the lower 90s. Some heat 
indices may reach near 95 along and south of the Ohio River. 

For the upcoming period, Monday through Friday, the mid level ridge 
will continue to build across the Ohio Valley, mid Atlantic, and 
parts of New England. There are some hints that a weak s/wv may ride 
on the western periphery of the ridge during the Monday/Tuesday 
time frame. This may bring a low chance of a shower/storm and 
perhaps a little more clouds. Otherwise, the mid and latter parts of 
the week will feature hot temperatures with dewpoints in the 
mid/upper 60s. This will result in heat indices in the 100 to 105 
degree range. Highs will generally be in the mid and upper 90s, with 
a chance of 100 degrees being reached at some locations. Little 
relief will be felt at night with lows generally in the lower to mid 
70s. Will continue to highlight the heat and humidity in the HWO. 
Will also watch if records may be tied or broken (Max Temps, High 
Minimum Temps). And with the diurnal instability, an isolated 
afternoon/evening shower/storm (10-15 percent) can not be ruled out.

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