SPC AC 230712

   Day 3 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0112 AM CST Sun Dec 23 2018

   Valid 251200Z - 261200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Organized severe thunderstorms are not currently forecast for
   Tuesday over the contiguous United States.

   ...Synopsis...
   A mid-level low and associated trough will move from the Sierra
   Nevada and central CA southeast to the AZ/Sonora border by early
   Wednesday morning.  Weak mid-level height rises will occur during
   the day over the southern Great Plains in between the western U.S.
   system and a fast-moving/low-amplitude shortwave trough moving from
   the OH Valley into the western Atlantic.  In the low levels,
   southerly flow over the western Gulf Basin into TX will transport
   moisture north-northwestward into the southern High Plains.  Weak
   elevated buoyancy is forecast primarily after dark in TX/OK/eastern
   NM ahead of stronger mid-level height falls not forecast until after
   the Day 3 period.  Nonetheless, a strengthening low-level
   warm-advection regime will support the development of scattered
   showers and weak elevated thunderstorms over eastern NM and
   northwest TX into OK during the midnight-6am CST Wednesday period. 
   Isolated showers/storms may also develop within the moist plume
   extending from south-central TX into the TX Low Rolling Plains.

   ..Smith.. 12/23/2018

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