Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left  
  navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Mesoscale Discussion 1658
< Previous MD         Next MD >
MD 1658 graphic

   Mesoscale Discussion 1658
   NWS Storm Prediction Center Norman OK
   0431 AM CDT Tue Aug 31 2021

   Areas affected...East central/southeast AL and west central GA

   Concerning...Severe potential...Watch unlikely 

   Valid 310931Z - 311100Z

   Probability of Watch Issuance...20 percent

   SUMMARY...A low-end threat for a brief/weak tornado or two will
   persist this morning, but a watch is not anticipated in the short
   term.

   DISCUSSION...The primary confluence band, to the east of the remnant
   center of tropical cyclone Ida, extends from south central into east
   central AL.  A narrow corridor of 73-74 F surface dewpoints extends
   along this confluence zone, where buoyancy is relatively larger and
   coincident with the belt of stronger low-level shear/SRH.  Buoyancy
   is marginal for a supercell/tornado threat, but there is enough CAPE
   to support updrafts producing lightning, so an isolated/weak tornado
   will still be possible with the more persistent supercell structures
   in the confluence band.  Given that this is still well before the
   diurnal heating cycle, the prospects for much ramp up in the tornado
   threat appear limited.  Thus, a watch is not anticipated in the next
   couple of hours.

   ..Thompson.. 08/31/2021

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

   ATTN...WFO...FFC...TAE...BMX...MOB...

   LAT...LON   32988590 33878565 33968519 33808483 33368485 32688510
               32078556 31468598 31338639 31458662 32388612 32988590 

Top/All Mesoscale Discussions/Forecast Products/Home
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us

NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: August 31, 2021
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities