Nov 7, 2018 0830 UTC Day 3 Severe Thunderstorm Outlook
Updated: Wed Nov 7 08:25:15 UTC 2018 (20181107 0830Z Day 3 shapefile | 20181107 0830Z Day 3 KML)
Probabilistic to Categorical Outlook Conversion Table
Categorical Graphic
20181107 0830 UTC Day 3 Outlook Graphic
Day 3 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Probabilistic Graphic
20181107 0830 UTC Day Probabilitic Graphic
Probability of severe weather within 25 miles of a point.
Hatched Area: 10% or greater probability of significant severe within 25 miles of a point.
Day 3 Prob. Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
   SPC AC 070825

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0225 AM CST Wed Nov 07 2018

   Valid 091200Z - 101200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Showers and thunderstorms are expected across portions of the
   southern and eastern U.S. Friday.  Severe weather is not expected.

   ...Discussion...
   Surface cyclogenesis is expected to occur over parts of the
   northeastern quadrant of the U.S. on Friday, as a large upper trough
   shifts out of the central U.S. and across the Midwest/Great
   Lakes/Mid-South region.  The low -- initially progged to lie over
   the Ohio vicinity, is expected to shift gradually north-northeast
   into/across southern Ontario, crossing the Ottawa River into
   southern Quebec late.  Meanwhile, a secondary, triple-point low is
   forecast to develop near the Mid-Atlantic Coast during the
   afternoon.

   As the low develops, a cold front will evolve, sweeping east across
   the eastern U.S. and south into the Gulf of Mexico.  By the end of
   the period, the front will likely have shifted off the Atlantic
   Coast and well south into the Gulf, lingering only across the
   Florida peninsula.

   Ahead of the front, a significant lack of instability is expected. 
   Just prior to frontal passage, a remnants of a cold-air dam east of
   the Appalachians should hinder surface-based storm potential across
   the East Coast states -- suggestive of weak/disorganized storms.  As
   such, severe weather is not expected with this system.

   ..Goss.. 11/07/2018

   CLICK TO GET WUUS03 PTSDY3 PRODUCT

   NOTE: THE NEXT DAY 3 OUTLOOK IS SCHEDULED BY 0830Z