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    Day 2 Outlook >
Sep 25, 2017 0600 UTC Day 1 Convective Outlook
Updated: Mon Sep 25 05:51:27 UTC 2017 (Print Version | 20170925 1200Z Day 1 shapefile | 20170925 1200Z Day 1 KML)
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 Forecast Discussion
   SPC AC 250551

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   1251 AM CDT Mon Sep 25 2017

   Valid 251200Z - 261200Z

   ...NO SEVERE THUNDERSTORM AREAS FORECAST...

   ...SUMMARY...
   Severe weather is not expected across the contiguous United States
   today.

   ...Southern and central Plains through Upper Mississippi Valley
   regions...

   Positive-tilt synoptic upper trough currently over the Rockies will
   advance slowly east today. A cold front extending from the upper MS
   Valley southwest into the southern High plains will make only slow
   southeastward progress. A moist boundary layer with mid to upper 60s
   F dewpoints reside in warm sector, but weak mid-level lapse rates
   with relatively warm temperatures aloft (-6 to -7 C 500 mb
   temperatures) should limit MLCAPE to well below 1000 J/kg in most
   areas. Moreover, stronger winds aloft will remain in the
   post-frontal region. Storms should continue developing along the
   warm conveyor belt and in vicinity of the frontal zone from the
   southern high plains into the upper MS Valley today into tonight.
   Deep-layer south-southwesterly winds downstream from the upper
   trough suggest a tendency for storms initiating along the front to
   continue to be undercut. Storms developing both in warm sector and
   along the cold front will be multicell in character, and given the
   marginal thermodynamic environment, severe weather prospects appear
   limited.

   ..Dial/Karstens.. 09/25/2017

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 1300Z

        
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Page last modified: September 25, 2017
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