Thursday, August 21 Forecast Discussion

Ample sunshine today with just some fair weather cumulus clouds have led to another day of hot and humid conditions, and temperatures will continue to climb into the weekend. Highs look to still be able to reach 100 degrees for Saturday and Sunday before relief comes.

There is one potential hurdle that will keep us from reaching 100 degrees, the amount of moisture present in the air. Humid air warms up slower and does not allow temperatures to climb very high compared to dry air. That's why the desert is constantly above 100 degrees while we see only a few days above 100 per year. Moisture will be very high this weekend, making our heat index brutal, but a degree or two cooler than forecast would not make a major dent in our feels like temperature.

Our ridge will start to break down/move west as we head into the start of next week, allowing cooler Atlantic air to filter in our direction. This, coupled with a better chance for showers and storms to develop thanks to weaker sinking air, will put shower and thunderstorm chances back into the forecast. No one day looks to be a wash out, but for now, the best chances to see rain will be Monday and Thursday.

In the tropics, Hurricane Hunters are investigating the tropical wave just to the east of the Lesser Antilles. This wave will enter favorable conditions to develop, but models are trending towards turning this storm out to sea with no threat to the United States. We will continue to monitor it.

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