Thursday, March 26, 2009

3/26 - 8pm - Spring Break and Severe Weather

Spring Break starts tomorrow afternoon for all JCPS schools and many other districts. I'll be gone this weekend and next week, so no forecast video or blog updates until next Monday (4/6).

If you're staying in town, you're in for quite a rocky ride weather-wise. Storms will start tomorrow afternoon with a high near 62 after a nice start to the day. Periods of rain and storms will continue through Friday night and into Saturday. With moist air and instability present on Saturday, multiple lines of severe thunderstorms and super cells are possible throughout the afternoon and into Saturday evening. I think hail and wind will be the main threat, but tornadoes are certainly possible due to decent shear profiles, along with the instability and cold front behind all of this mess. The latest SPC outlook has us in a 30% area (SLIGHT Risk) for severe weather:



The SPC mentions that they will be upgrading some of that 30% area to a MODERATE Risk tomorrow, so I'll post that information when I get home after school. I'm thinking this outbreak will be worst to our south in Tennessee and northern Georgia and Alabama, but if the associated area of low pressure shifts northward and westward, temperatures would bump up here and the supply of moist air from the Gulf would intensify a bit. If the low shifts eastward/southward, then our severe risk would decrease. We'll have to see what happens.

In any case, we'll top out at 67 on Saturday and then drop to 50 for Sunday after the cold front comes through, but luckily we'll recover to 65 by Monday. The next chance of rain will occur on Tuesday, with a high near 60. We'll end the week in the 60's it looks like, with a chance for rain or storms on Thursday night.

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