spc severe weather - big bay weather

Online since October of 2007

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SPC Day 4-8 Outlook

Updates are issued at 400 am CST/CDT (0900/1000 UTC) - Current UTC time: Sep 4 2025 5:06 pm

Day 1

D4	Sunday Sep 7 2025 - Monday Sep 8 2025	D7	Wednesday Sep 10 2025 - Thursday Sep 11 2025
D5	Monday Sep 8 2025 - Tuesday Sep 9 2025	D8	Thursday Sep 11 2025 - Friday Sep 12 2025
D6	Tuesday Sep 9 2025 - Wednesday Sep 10 2025	(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

Largly based on original scripts from Ken True: saratoga-weather.org and Rick Curly: ricksturf.com

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