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Day 4-8 Severe Weather Outlook Issued on Sep 9, 2020
Updated: Wed Sep 9 07:38:02 UTC 2020
Day 4-8 Severe Weather Outlook Graphics Issued on Sep 9, 2020
Day 4 Severe Weather Outlook Graphics Issued on Sep 9, 2020
Day 4 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Day 5 Severe Weather Outlook Graphics Issued on Sep 9, 2020
Day 5 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Day 6 Severe Weather Outlook Graphics Issued on Sep 9, 2020
Day 6 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Day 7 Severe Weather Outlook Graphics Issued on Sep 9, 2020
Day 7 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
Day 8 Severe Weather Outlook Graphics Issued on Sep 9, 2020
Day 8 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
D4Sat, Sep 12, 2020 - Sun, Sep 13, 2020 D7Tue, Sep 15, 2020 - Wed, Sep 16, 2020
D5Sun, Sep 13, 2020 - Mon, Sep 14, 2020 D8Wed, Sep 16, 2020 - Thu, Sep 17, 2020
D6Mon, Sep 14, 2020 - Tue, Sep 15, 2020 (All days are valid from 12 UTC - 12 UTC the following day)
Note: A severe weather area depicted in the Day 4-8 period indicates 15%, 30% or higher probability for severe thunderstorms within 25 miles of any point.
PREDICTABILITY TOO LOW is used to indicate severe storms may be possible based on some model scenarios. However, the location or occurrence of severe storms are in doubt due to: 1) large differences in the deterministic model solutions, 2) large spread in the ensemble guidance, and/or 3) minimal run-to-run continuity.
POTENTIAL TOO LOW means the threat for a regional area of organized severe storms appears unlikely (i.e., less than 15%) for the forecast day.
 Forecast Discussion

   ZCZC SPCSWOD48 ALL
   ACUS48 KWNS 090736
   SPC AC 090736

   Day 4-8 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0236 AM CDT Wed Sep 09 2020

   Valid 121200Z - 171200Z

   ...DISCUSSION...
   The potential for some strong to possibly severe thunderstorms will
   likely focus this weekend from parts of the Great Lakes into perhaps
   the Northeast with an eastward-migrating mid-level trough.  It is
   uncertain the degree of instability that can develop in a
   northward-advecting moist sector across these regions.  By early
   next week, the upper-air pattern becomes more progressive across the
   contiguous United States before model variability becomes large.

   ..Smith.. 09/09/2020

   CLICK TO GET WUUS48 PTSD48 PRODUCT
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