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: Thu, 25-May-2017 4:21pm GMT


Day 1

D4Sun May 28 - Mon May 29, 2017 D7Wed May 31 - Thu Jun 01, 2017
D5Mon May 29 - Tue May 30, 2017 D8Thu Jun 01 - Fri Jun 02, 2017
D6Tue May 30 - Wed May 31, 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