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Fabulous Spring-ish Weekend, Storms Monday

| March 16, 2013 @ 7:45 am

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Great weekend in store for Central Alabama with highs climbing nicely into the middle 70s and even a tad warmer south of the Birmingham area. We’ll see a few highs cirrus clouds passing by from time to time but lots of sunshine for us to enjoy. With a nearly zonal flow in the upper atmosphere and surface high pressure along the Gulf Coast, the weather will stay well to our north for the weekend.

Sunday should be a mostly sunny day but clouds will be increasing during the afternoon as the next system approaches us promising some storms and rain for Monday. Looks like Monday will start out primarily dry though some isolated showers may occur. The rain potential increases as the front comes into the area late in the day Monday. The main surface low along with upper trough are well to our north on Monday, but the GFS is suggesting a secondary surface low in the Ohio River Valley. This could help to improve conditions for a severe weather threat on Day 3, and the SPC has outlined an area for slight risk going from eastern Kentucky across eastern and middle Tennessee into the northern half of Alabama. This appears to be a high instability and low shear environment, so the main threat is likely to be damaging thunderstorm wind. The threat comes Monday afternoon and evening. Rainfall amounts are going to be in the half inch to 1 inch range.

Tuesday the weather improves with another brief cool down. With a good northwesterly flow aloft, temperatures Wednesday and Thursday morning are likely to dip into the 30s with perhaps a threat of freezing values. But we stay dry until Friday when the next system comes along to pose a threat of rain. This one appears to come with a good deal of uncertainty as we see some model differences on the strength and position of the low. The GFS a little less aggressive with the rain while the ECMWF is more aggressive and slightly slower than the GFS. We are verging on voodoo country, and we do need to focus on the Monday event, so I’m sure we’ll be refining the forecast for Friday and next weekend a little later.

Week two, voodoo country, looks mainly dry with the potential for a glancing blow from a short wave moving across the Great Lakes area around the 30th.

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Headed out to shoot a little video of a handbell performance for a couple of friends this morning. I hope you have an opportunity to get out to enjoy the lovely Spring weather. Have a great day and Godspeed.

-Brian-

Category: Alabama's Weather

About the Author ()

Brian Peters is one of the television meteorologists at ABC3340 in Birmingham and a retired NWS Warning Coordination Meteorologist. He handles the weekend Weather Xtreme Videos and forecast discussion and is the Webmaster for the popular WeatherBrains podcast.

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