It seems our Second Severe Season has arrived albeit a bit late. Normally the fall severe weather begins in Mid to late November in the southeast. November this year was quite with the exception of a potential severe weather event in the southeast that never materialized during the Nov. 11th thru 13th time frame. If you were around this past week you may recall the Storms and Tornadoes in the Southeast on December 10 2012. on with the show …
This coming bout of potential Severe weather will begin Late Saturday in the ARK-LA-MISS area shifting east with time into Alabama, Georgia and northern Florida. There remains uncertainty with the system as to timing and how strong storms may become due to how strong the upper level low pressure expected to develop in the northern tiers of this region becomes. The stronger the ULL, the more moisture it will pull north from the Gulf of Mexico into an already somewhat unstable air mass closer to the coast and extending northward. Regardless, am expecting some strong storms with isolated severe at this time throughout the region beginning today thru Monday again spreading west to east. Right now [5:05 AM EST 12/15/2012] confidence is somewhat LOW to the severe side based on how much cloud cover and rain occurs ahead of the frontal system in the warm sector.
Threats with this system will be in the form of Isolated strong to severe storms with the potential for a few Tornadoes with stronger storms possible. While the threat of tornadoes looks low at this time, a couple can’t be entirely ruled out due to increasing shear layer to layer which may became surface based over time supporting Bowing Line areas capable of Damaging Straight Line winds and Isolated Supercells which may spawn a Tornado. There is also a threat of Flash Flooding in areas with 1 to 2 inches of rain expected. As always .. not everyone will experience severe storms.
Today through Tomorrow morning the main threat will be the possibility of Damaging winds associated with strong thunderstorms that may develop generally in the afternoon and evening hours continuing through the overnight. … On Sunday the possibility of severe storms increase and continues into the overnight into Monday. On Sunday the Storm Prediction Center at this time [5:17 AM EST 12/15/2012] has an area highlighted for an elevated risk for strong to severe storms. We’ll see how this area looks later today for possible increase in severity or even a decrease. For now here is what they have for Sunday Morning through Monday Morning. [click image to embiggen]
Here’s the anticipated Rain Amounts Today through Tuesday Morning
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Tropical storm Isaac is still expected to become a minimal hurricane before making landfall along the Gulf coast in the Louisiana Mississippi Alabama area.
Right now Isaac is still a tropical storm with winds of 70 mph and continues moving to the Northwest at 12 mph. At 4:00 am CDT Isaac was about 125 miles south-southeast of the Mississippi River and about 205 miles south-southeast of Biloxi Mississippi. Isaac is expected to strengthen in the hours before landfall and will as mentioned be a minimal hurricane with anticipated winds of maximum 85 mph, there will be higher gusts. There will likely be a few Tornadoes as well.
The Eyewall of Isaac this morning..
Isaac is large and his winds will be felt before the center makes landfall.tropical storm force winds extend outward of 205 miles for Isaac’s center. Heavy rains and high storm surge will also become problematic causing flooding with storm surge of:
6-12 FEET in Southeast Louisiana and Mississippi 4-8 FEET in Alabama 3-6 FEET in South Central Louisiana 3-6 FEET in Florida Panhandle 1-3 FEET in Florida west coast including Apalachee Bay
Rainfall Potential for the area:
You can find all the information on Isaac including Graphics.. and more on the Tropical Weather Page here ..
Isaac now has winds of 65 MPH with higher gusts and is now moving West-Northwest at 20 MPH. Currently located at 23.5 North 80.0 West or about 135 Miles East-Southeast of Key West Florida and 155 Miles East of Havana Cuba. Central pressure now 995 MB. Isaac is expected to be or Near Hurricane strength when it reaches the Florida Keys sometime today. Tropical Storm Winds extend outward 205 miles from Isaac’s Center.
Isaac will impact the Florida Keys in the near term and is expected to strengthen as he continues tracking northwest into the warmer waters of the Gulf of Mexico. The current track of Isaac has shifted to the West at this time from previously and will shift [flip flop] until landfall which is still uncertain somewhere along the Gulf Coast. Once well into the Gulf of Mexico, computer models will get a better handle on Isaac and withing the next day or so we should will have a much better idea of where he is headed.
Radar from Key West Florida 10:16 AM EDT
* A Hurricane ‘Warning’ is in effect for the Florida Keys, Dry Tortunas, the West coast of FL from Bonita Beach Southward to Ocean Reef, Florida Bay and the Andros Islands in the Bahamas. * A Hurricane ‘Watch’ is in effect for the FL East coast from Golden Beach Southward to Ocean Reef, the Mouth of the Mississippi River ‘NOT INCLUDING METRO NEW ORLEANS’ to Indian Pass Florida.
You can find all the information on Isaac including Graphics on the Tropical Weather Page here .. and more ..
You can find myself along with many others posting important information which is being constantly updated here – For rapid updates on Tropical Storm Isaac From 20 forecasters Covering 9 states along with professional and tropical meteorologist http://www.facebook.com/fftropicalzone , So hit the link and while you’re there give the page a like.