2008.10.24
Why we might get a little less rain than earlier thought
Let's be clear -- tonight is still going to be a soggy night. We have already seen some drizzle and light showers, and that will pick up through the evening as upslope winds bring moisture into the higher terrain and we begin to be affected by the front coming from the west. But, as at least one commenter noted earlier, there does appear to be a split in the precipitation to our southwest ... you can see it in the radar grab at the left over central Georgia. What is happening is that the convection to the southeast -- the yellow-colored echoes -- are cutting off some of the northward moisture flow from the Gulf of Mexico. This happens from time to time in our cool-season storm systems, reducing precipiation amounts. But we still have a lot of things working for widespread rain tonight and early Saturday, and we'll probably see this dry slot fill in some as the evening goes along. But it's possible we will see lesser rainfall amounts than earlier thought ... maybe around 3/4 to 1 inch, with locally heavier amounts ... because of the storms to the south cutting off moisture flow.
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Ugh.
The Virginia Split strikes again.
Comment by Brandon R. — October 24, 2008 @ 3:55 pm