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Invest90L/Potential TS Alberto


Orangeburgwx

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The influence we will see from Alberto is gonna give a lot of people some serious rainfall totals. The models are shifting the heaviest rain totals around run to run so who knows how It will all shake out. Gonna be plenty wet across most of the state though.

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Albany GA is initial Target for tornado chase. Plan to follow cells from there northeast. Good 850/925mb wind fields. Clearing/dry slot. Surface convergence zone. Decent terrain, it's all relative in Dixie. Sorry short last post until hopefully a report. Going south from Macon lunch.

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mcd0554.gif

 

   Mesoscale Discussion 0554
   NWS Storm Prediction Center Norman OK
   0148 PM CDT Mon May 28 2018

   Areas affected...Portions of Georgia and southeastern Alabama

   Concerning...Severe potential...Watch possible 

   Valid 281848Z - 282145Z

   Probability of Watch Issuance...40 percent

   SUMMARY...An isolated tornado threat may develop to the northeast of
   Alberto this afternoon. Trends will be monitored for a possible
   Tornado Watch.

   DISCUSSION...Latest NLDN lightning data from 1845Z shows an increase
   in electrical activity within the last hour in the outer rainbands
   to the northeast of Alberto's center. This is likely the result of
   convective cells deepening as they move into an environment that has
   become unstable (e.g., MLCAPE values of 1000-1500 J/kg) due to ample
   insolation over the last several hours. The low-level wind field is
   also increasing across the discussion area with regional VAD
   profiles and RAP mesoanalysis suggesting 0-1 SRH values of 100-200
   m2/s2. The low-level wind field is expected to continue increasing
   this afternoon as Alberto progresses toward the area, which will
   further elongate hodographs and may promote transient low-level
   rotation and subsequent brief tornadoes.   

   While radar analysis over the last hour shows some weak low-level
   rotation with cells across the area, trends will be monitored for a
   more robust threat and a possible Tornado Watch.

   ..Elliott/Hart.. 05/28/2018

   ...Please see www.spc.noaa.gov for graphic product...

   ATTN...WFO...JAX...FFC...TAE...BMX...

   LAT...LON   33028565 33448461 33248381 32908302 32428260 31888232
               30938257 30728295 30538324 30588381 30898467 31318533
               31818597 33028565 
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LOL yes late Tuesday Alberto looked great going into Tenn. As for my Monday project - bust! I know better but I had not been out even once this year. Northeast or east of tropical low strategy works best when it has started to drift to the east; therefore, cells move more into the low level flow. Alberto was tracking NNW; so, cells were neutral if not moving away from their inflow. Stronger cyclones can gin up tornadoes either direction. Alberto was not one of those.

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