Tuesday, July 22, 2014

Upper Low Slow Go...

An upper low pressure system is slowly drifting across SE LA/MS tinight and we'll be on the "wetter side" of that circulation for Wednesday.  That should keep highs 90 or below with rain coverage 50-60%.  As the low weakens and drifts farther to the WSW, rain chances decrease Thursday thru Sunday with high temps increasing to the low to mid 90s.   Those kind of highs are typical for late July.  We have been up to 95 only once so far this summer.  Compare that to our hottest summer (2011) when we already had 28 days of 95+ with 2 of those above 100 !  Wonder what could be causing our cooler summers?   Hummm

In the Tropics, tonight's satellite loops show a burst of T-Storms near the small tight rotation of TD # 2.   NHC still says this will not become Bertha since 1) it is surrounded by very dry and and 2) it is moving into an area of higher wind shear.   They expect it to dissipate in a day or tow.   Long range computer models show another unusually deep east coast upper trough developing next week that 1) will protect us from any tropical activity (none expected) and 2) shifts the threat for tropical development east of Florida much like when Arthur formed from an old cold front.  What I'll be watching is whether next week's front is strong enough to push into the Gulf by midweek and whether the western end tries to spin up a rotation like back in August of 1983 (Alicia).  Stay tuned!

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