Skip Navigation Links weather.gov 
NOAA logo-Select to go to the NOAA homepage NOAA's National Weather Service   Select to go to the NWS homepage
Storm Prediction Center
navigation bar left     navigation bar end cap


 
USA.gov is the U.S. Government's official Web portal to all Federal, state and local government Web resources and services.

Day 4-8 Severe Weather Outlook Issued on Oct 27, 2021
Updated: Wed Oct 27 07:10:03 UTC 2021
Day 4-8 Severe Weather Outlook Graphics Issued on Oct 27, 2021
Day 4 Severe Weather Outlook Graphics Issued on Oct 27, 2021
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 Oct 27, 2021
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 Oct 27, 2021
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 Oct 27, 2021
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 Oct 27, 2021
Day 8 Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
No Risk Areas Forecast
D4Sat, Oct 30, 2021 - Sun, Oct 31, 2021 D7Tue, Nov 02, 2021 - Wed, Nov 03, 2021
D5Sun, Oct 31, 2021 - Mon, Nov 01, 2021 D8Wed, Nov 03, 2021 - Thu, Nov 04, 2021
D6Mon, Nov 01, 2021 - Tue, Nov 02, 2021 (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 270708
   SPC AC 270708

   Day 4-8 Convective Outlook  
   NWS Storm Prediction Center Norman OK
   0208 AM CDT Wed Oct 27 2021

   Valid 301200Z - 041200Z

   ...DISCUSSION...
   Quiescent conditions and an unfavorable pattern for severe weather
   will characterize the extended period.  An initial mid-level trough
   over the Eastern Seaboard will depart into the western Atlantic and
   be followed by mean mid-level troughing over the north-central U.S.
   into the early part of next week.  The lack of appreciable return
   flow and a moist/unstable airmass into the south-central U.S. will
   effectively nullify severe weather potential.

   ..Smith.. 10/27/2021

   CLICK TO GET WUUS48 PTSD48 PRODUCT
Weather Topics:
Watches, Mesoscale Discussions, Outlooks, Fire Weather, All Products, Contact Us
NOAA / National Weather Service
National Centers for Environmental Prediction
Storm Prediction Center
120 David L. Boren Blvd.
Norman, OK 73072 U.S.A.
spc.feedback@noaa.gov
Page last modified: January 01, 1970		 Disclaimer
Information Quality
Help
Glossary 		Privacy Policy
Freedom of Information Act (FOIA)
About Us
Career Opportunities