Acadiana should continue to enjoy relatively nice conditions for August into Tuesday (and perhaps a good part of this week) with below normal humidity offsetting temperatures in the lower 90s.
In the wake of a weak frontal boundary, dew points across the region dropped into the mid-upper 60s to lower 70s over since the weekend keeping the heat index well below 100° across the area Monday, with more of the same expected for Tuesday.
Look for lows Tuesday morning to drop in the lower 70s...some 3-5° below normal.
Highs should reach back into the lower 90s Tuesday, but once again northwest surface winds will keep our dew points and humidity almost on the comfortable range given its August.
Rain chances in a dry northwesterly flow aloft should remain near 10% or less Tuesday but could reach 20% Wednesday as a weak upper disturbance rolls in from the northwest.
Overall little change in the pattern is expected for the rest of the week with below normal rain chances (20% or less) anticipated through Friday.
By the weekend, southerly winds and higher humidity should return, along with a slightly better chance of widely scattered afternoon showers and thunderstorms.
See the KATC 10 Day Forecast for the latest.
Meanwhile in the tropics, an area of disturbed weather south of Bermuda has a 60% chance of development per the National Hurricane Center sometime this week, but this system will not threaten the Gulf of Mexico.
The big story remains Tropical Storm Isaias, which is expected to make landfall Monday night across the Carolinas briefly near hurricane strength.
The storm will accelerate northward along the entire East Coast of the U.S. with tropical storm warnings in effect impressively from South Carolina to Maine, accompanied by hurricane warnings for portions of South and North Carolina.
Isaias will interact with a strong jet stream as it moves toward northward keeping strong winds gusts better than 60 mph across most coastal areas a possibility into New England.
Meanwhile, a stripe of heavy rain farther to the west could produce flash flooding, but fortunately the storm will be traveling quickly limiting some of the rain potential.
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