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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, October 27, 2021

SPC Oct 28, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0725 PM CDT Wed Oct 27 2021 Valid 280100Z - 281200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE CENTRAL GULF COAST REGION... ...SUMMARY... Scattered severe thunderstorms will spread east along the Gulf Coast tonight. Damaging winds along with the threat for tornadoes will continue. ...Central/Eastern Gulf Coast... Severe probabilities have been lowered across much of Louisiana to reflect stable post-squall line environment. Otherwise, severe threat will remain focused along the central Gulf Coast. Early-evening water-vapor imagery depicts an upper low digging southeast across OK. Strong 12hr mid-level height falls (approaching 180m) will spread across the lower MS Valley/central Gulf States as high-level diffluent flow develops over the northern Gulf basin and adjacent coastal areas. While LLJ will be focused farther inland, favorable low-level trajectories should encourage maritime tropical air mass to advance inland from southern AL into the FL Panhandle ahead of the progressive squall line later tonight. As surface dew points rise into the lower 70s, near-surface parcels will become increasingly buoyant and favorable for sustained robust/severe squall line. Severe threat should increase east along the central/eastern Gulf Coast as the night progresses. ..Darrow.. 10/28/2021 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)