SPC AC 080033

   Day 1 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0733 PM CDT Wed Apr 07 2021

   Valid 080100Z - 081200Z

   ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PARTS OF THE
   LOWER MISSISSIPPI VALLEY...

   ...SUMMARY...
   A few severe thunderstorms remain possible this evening and
   overnight across the lower Mississippi Valley. Damaging winds and a
   brief tornado are possible.

   ...Lower MS Valley...
   A line of strong to severe storms currently extends from eastern AR
   southwestward to the Sabine River. 00Z soundings ahead of these
   storms show favorable hodographs for severe storms including
   supercells, with effective SRH around 200 m2/s2. A minor capping
   inversion also exists around 700 mb. Large-scale lift will decrease
   after 06Z, but the favorable deep-layer shear with large
   cross-boundary component and around 1500 J/kg MLCAPE will likely
   allow a severe risk to persist tonight. Damaging wind gusts are most
   likely, but a tornado will be possible as well as low-level shear
   remains favorable. For near-term information see mesoscale
   discussion 329 which expires at 01Z.

   ...IL into eastern IA...
   A line of thunderstorms with a history of a few measured severe
   gusts continues eastward into IL and eastern IA. Given the end of
   the diurnal cycle, and capping noted on the 00Z ILX sounding, the
   severe threat with this line has likely peaked, and a gradual
   downward trend is expected. A few strong to severe gusts remain
   possible in the short term before the boundary layer stabilizes
   further.

   ..Jewell.. 04/08/2021

   CLICK TO GET WUUS01 PTSDY1 PRODUCT

   NOTE: THE NEXT DAY 1 OUTLOOK IS SCHEDULED BY 0600Z