After enjoying plentiful cloud cover and receiving some beneficial rainfall this month, things will be changing this weekend, and not for the better.
A big dome of high pressure will strengthen and move over the Southern Plain states this weekend, bringing with it triple digit heat and virtually no chance for any cooling rain showers. This is the weather pattern we had all of last summer, when we had the record setting drought and endless number of triple digit days.
We do not anticipate the ridge sticking around for the rest of the summer, but it will be with us for the next several days. In addition to the actual air temperature topping out over the century mark, the heat index, or feels like temperatures, could climb as high as 110°. If these heat indices stay above 105° for consecutive days and for an extended period of time, then a heat advisory may be issued for the Texas Forest Country.
The air underneath high pressure sinks. When air sinks, you cannot get the clouds to build into showers. It also allows the air to really heat up quickly. Just think of airing up your bicycle tire before you head out on a bike ride. As you put air into the tire, the air compresses and heats up. That's why the tire feels hot when you put your finger on it to check out the tire pressure. That same concept works in a similar fashion when it comes to this weather pattern setup, especially this time of year.
Frequency of 100° Days
Even though we will be entering a heat wave this next week, it still does not come close to the record setting heat we saw one year ago in 2011.
At this time last year, we had already hit or exceeded the century mark 24 times. So far in 2012, we have done that only 5 times. In doing the math, we already had five times the amount of triple digit days, and just think, we have yet to enter what is typically the hottest month of the year in August.
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