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Archives for the SPC Convective Outlook are updated daily (approximately) with a live map at the beginning of each article. Follow the link at the end of the article to check for current updates on the NOAA/NWS Storm Prediction Center website. Also, see Archives for Chicago's hourly weather data on CARDINAL NEWS Magazine.


Wednesday, September 29, 2021

SPC Sep 29, 2021 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0135 AM CDT Wed Sep 29 2021 Valid 011200Z - 021200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Friday. ...Synopsis... The upper low/trough over AZ/NM will slowly migrate northeast toward the central/southern High Plains on Friday. Meanwhile, the larger-scale upper flow pattern across the west will weaken and become generally westerly. A ridge over the Midwest and Southeast will weaken while an upper low persists across the Northeast. Low-level warm advection across the southern Plains toward the MS Valley will aid in areas of heavy rain and thunderstorms ahead of a nearly stationary cold front positioned from the Upper Midwest into the southern Plains. Modest instability/shear and poor lapse rates will preclude severe potential. ..Leitman.. 09/29/2021 Read more LIVE:
SUNRISE AND SUNSET TIMES IN UTC (if you're not logged in to Google)
CHICAGO UTC-6 during CST (Central Standard Time, e.g., winter)
CHICAGO UTC-5 during CDT (Daylight Savings Time, e.g., summer)