NOAA Storm Prediction Center Outlook

More SPC info on this site: 

SPC Day 4-8 Outlook

Updates are issued at 400 am CST/CDT (0900/1000 UTC) - Current UTC time: Wed, Aug-23-2017 9:53am GMT


Day 1

D4Sat Aug 26 - Sun Aug 27, 2017 D7Tue Aug 29 - Wed Aug 30, 2017
D5Sun Aug 27 - Mon Aug 28, 2017 D8Wed Aug 30 - Thu Aug 31, 2017
D6Mon Aug 28 - Tue Aug 29, 2017 (All days are valid from 12 UTC - 12 UTC)

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 highly unlikely during the entire period (e.g. less than a 30% probability for a regional severe storm area across the CONUS through the entire Day 4-8 period).

Day 2

Day 3