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Jan 27, 2021 0700 UTC Day 2 Convective Outlook
Updated: Wed Jan 27 06:52:42 UTC 2021 (Print Version | 20210127 0700Z Day 2 shapefile | 20210127 0700Z Day 2 KML)
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 Forecast Discussion
   SPC AC 270652

   Day 2 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1252 AM CST Wed Jan 27 2021

   Valid 281200Z - 291200Z

   ...NO THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Severe weather is not expected across the U.S. Thursday.

   ...Discussion...
   Upper troughing/cyclonic flow will persist over the northeastern
   U.S. Thursday, as one shorter-wavelength feature shifts eastward
   into the western Atlantic, to be replaced by an upper low
   progressing southeastward out of eastern Canada into the Northeast. 
   Meanwhile in the West, a sharp trough just off the West Coast will
   gradually advance inland through the period.  In between,
   anticyclonic flow will prevail across a large portion of the central
   CONUS.

   At the surface, high pressure will prevail east of the Rockies,
   though a rather pronounced lee trough over the high Plains is
   expected.  Meanwhile, a rather ill-defined cold front will move
   across California toward the Great Basin and Desert Southwest.

   With much of the country under the influence of a continental polar
   airmass, little convective potential is evident.  One exception will
   be across portions of the West Coast states, as the upper trough
   shifts inland.  In addition to low-topped showers, cold air/steep
   lapse rates aloft accompanying the trough could support a
   few/sporadic lightning flashes -- particularly near the central
   California coast late in the period.  However, coverage at this time
   appears likely to remain too sparse to warrant introduction of a 10%
   thunder area.

   ..Goss.. 01/27/2021

   CLICK TO GET WUUS02 PTSDY2 PRODUCT

   NOTE: THE NEXT DAY 2 OUTLOOK IS SCHEDULED BY 1730Z

        
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Page last modified: January 27, 2021
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