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    Day 2 Outlook >
Sep 22, 2018 1630 UTC Day 1 Convective Outlook
Updated: Sat Sep 22 16:20:36 UTC 2018 (Print Version | 20180922 1630Z Day 1 shapefile | 20180922 1630Z Day 1 KML)
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 Forecast Discussion
   SPC AC 221620

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1120 AM CDT Sat Sep 22 2018

   Valid 221630Z - 231200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Thunderstorms are possible over parts of the Southeast westward to
   south and east Texas; however, no organized severe weather is
   expected.

   ...Synopsis...
   In the wake of a midlevel trough now moving over the Canadian
   Maritimes, a surface cold front will continue to drift southward
   across the southern Plains, TN Valley, and Mid Atlantic.  A series
   of weakening midlevel vorticity maxima, within a tropical moisture
   plume from northeast TX to the lower OH Valley, will help focus
   thunderstorm development along the front through tonight.  Poor
   midlevel lapse rates within the moisture plume, as well as
   relatively weak vertical shear, will preclude severe storms along
   this corridor.

   ..Thompson/Dean.. 09/22/2018

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 2000Z

        
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Page last modified: September 22, 2018
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