Christmas Severe Weather Event in the Southeast – December 25 2012

Regardless of strength and track of the developing low, at a minimum this will be a ‘damaging wind event’. On the extreme side it looks like there will be more than a couple tornadoes to deal with mainly in Central and Southern areas of Mississippi, Alabama, Georgia and possibly extreme Northern Florida.

If you’ve followed me long enough you know I won’t / don’t sugar coat what I see. I want you to enjoy your Christmas but I want you to be aware of the storms that will develop during the day Tuesday in Mississippi and Alabama continuing east through the afternoon into the early morning hours on Wednesday in Georgia. I will remind you that not everyone will experience severe weather and/or tornadoes.

Without getting into technical details [ weather speak ] here’s the latest outlook from various National Weather Service office’s around the southeast. Click image to enlarge.

Christmas 2012 Storm Event

Here’s the outlook from the Storm Prediction Center on 12/23/12 AM. This outlook will be updated on Monday and Tuesday Morning and throughout the day Tuesday December 25 2012.

SPC multi panel for 122512 as of 122312

I’ll be keeping an eye on this for further developments.

Technical details [ weather speak ]- 12z NAM and 12z GFS Severe parameters look strong for Mississippi, Alabama, Georgia and Northern Florida and a tad weaker [Lifted index and Cape] in East Georgia, still looks more than adequate for severe storms at this time.

Looking at latest data from the 12z NAM and 12z GFS, it appears the system has slowed somewhat. Nonetheless Wind Shear is still quite strong with a Jet Streak of 80+ knots on the 12z NAM and 90 knots on the 12z GFS in the areas mentioned above.

The lifted index on both models is -1 to -3 and approaching -5 on the NAM Late Wednesday night. Cape on the NAM is in the 1500 to 1750 Jkg Tuesday evening and around 750 on the GFS during the same time frame. I suspect a feedback issue here.

I expect backing winds will increase the threat of Tornadoes as time goes on. Also depending on cloud cover and rain or lack thereof ahead of the system the overall strength will increase due to heating allowed. Dewpoints will be in the high 50’s to mid 60’s and approaching the 70’s along the gulf coast adding instability and will be transported north.

Be sure to follow me on twitter where I post information when severe weather is happening including radar images and most if not all Tornado and Severe Warnings with information as to location and where the storms are headed.

If you’re local to the Columbus GA, Ft Benning GA, Phenix City Al area, you can also follow my posts on Facebook https://www.facebook.com/CataulaGaWeather

Posted 1:50 PM EST 12/23/2012

Advertisements

Monday 12/17/12 Update – Southeast Severe Weather

The possibility of severe storms still exist today for areas in the southeast. Currently [ 5:20 AM EST 12/17/2012 ] seeing some moderate to strong thunderstorms in Southeast Mississippi / Southwest Alabama ahead of the cold front generally heading East-Northeast while the Cold front pushes east.

Radar at 5:20 AM EST

520 am est 121712

The only thing at this time I see limiting stronger storms developing, some possibly severe, is instability and moisture available ahead of the front. This lack of instability will be on the increase. By early afternoon / mid day Georgia should see storms some of which ‘will be severe’ begin to fire off. As always, ‘Not everyone will see severe weather. I don’t think there is enough time this morning for severe storms to break out in south-central Alabama, but may see some later in East Alabama / West Georgia. At the least should see isolated thunderstorms in these areas as morning pushes on. All of this will eventually make it’s way to South Carolina later today.

As mentioned the past few days the greatest threat will be ‘Damaging winds’ associated with the stronger storms. We’ll have to keep an eye on things this afternoon onward for the potential for an isolated tornado as well as hail.

Here’s the outlook for today issued by the SPC ‘valid at 12z – 7 AM EST’ this morning. [click image to embiggen]

day1otlk_1200_prt_multi panel 515 AM EST 121712

I likely wont be posting further updates on this here. Be sure to follow me on twitter where I post information when severe weather is happening including radar images and most if not all Tornado and Severe Warnings with information as to location and where the storms are headed.

Severe Weather Potential Friday July 20 2012

The severe threat will primarily be damaging winds, along with frequent to continuous lightning heavy rainfall / downpours which may cause flooding and hail.

At this time 6:10 AM EDT 7/20/2012 the main feature with this system has entered North Alabama and Georgia moving in a south southeast direction. This Mesoscale Convective System is already responsible for a couple Special Weather Statements being issued at this early hour where the primary threat has been winds of 40 to 50 MPH and pea sized hail in North Alabama and Georgia.

This activity will continue for much of the day and may increase during daytime heating. The area affected is generally the same as yesterday that being, Mississippi, Alabama, Georgia, North and South Carolina and Tennessee during early morning. Whether or not the storms will intensify later depends greatly on how much the area destabilizes and the possible interaction with outflow boundaries being pushed south southeast ahead of the main complex.

Here’s today’s early morning outlook from the Storm Prediction Center highlighting the Slight Risk of Severe Storms area. The next scheduled update from The SPC is expected around 9 AM EDT. At that time I will also post an update if warranted. Click Image to Enlarge

Previous Post concerning this posted July 19 at 2:45 PM EDT – Severe Weather Potential Friday July 20 2012 – Mississippi, Alabama, Georgia, Tennessee