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 1104
< Previous MD         Next MD >
MD 1104 graphic

   Mesoscale Discussion 1104
   NWS Storm Prediction Center Norman OK
   0815 PM CDT Tue Jun 20 2017

   Areas affected...Coastal areas of Mississippi...Alabama...and the
   Florida Panhandle

   Concerning...Severe potential...Watch unlikely 

   Valid 210115Z - 210345Z

   Probability of Watch Issuance...20 percent

   SUMMARY...An isolated tornado threat will evolve with isolated
   convection across the discussion area over the next couple of hours,
   with a more appreciable tornado threat potentially evolving
   overnight.

   DISCUSSION...Scattered banded and cellular convective structures
   have evolved in the northeastern quadrant of T.S. Cindy.  A couple
   of these storms have exhibited rotation near/north of Apalachicola,
   FL, while other storms offshore are exhibiting rotation and may
   threaten coastal areas from Mobile, AL eastward to Fort Walton, FL
   over the next couple of hours.  Low-level shear has gradually
   increased throughout the day in response to strengthening easterly
   low-level flow associated with Cindy.  Instability is negligible in
   most areas, but increases along and south of an east-west-oriented
   baroclinic zone from near Plaquemines Parish, LA eastward to near
   Tallahassee, FL.  As this zone shifts northward with time, the
   tornado threat will increase as rotating cells migrate inland from
   open waters.  The threat in the near term is too isolated to warrant
   a tornado watch issuance, although this area will be monitored into
   the overnight hours as instability increases across the region.

   ..Cook/Guyer.. 06/21/2017

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

   ATTN...WFO...TAE...MOB...LIX...

   LAT...LON   30788910 30928811 31028676 30848550 30528480 30168468
               29778467 29658488 29708533 29918571 30208675 30228740
               30208812 30288878 30428921 30578924 30788910 

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: June 21, 2017
Disclaimer
Information Quality
Help
Glossary
Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities