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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.


Sunday, September 5, 2021

SPC Sep 5, 2021 0600 UTC Day 1 Convective Outlook

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1223 AM CDT Sun Sep 05 2021 Valid 051200Z - 061200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Organized severe thunderstorms are not currently forecast today or tonight across the Lower 48 states. ...Synopsis... A broad mid-level trough with cyclonic flow will encompass the Midwest into the Northeast today. A lead mid-level speed max will move from the central Great Lakes into NY by late afternoon. Only weak destabilization is forecast across NY ahead of the approaching disturbance. Nonetheless, a moist boundary layer (60s F dewpoints) and strengthening large-scale ascent will lead to isolated storms developing during peak heating. Farther west, isolated storms are expected to be ongoing across the central Great Plains in association with a mid-level shortwave trough forecast to be absorbed within the larger-scale trough. Although a strong storm cannot be ruled out early this morning over NE, it appears any hail risk will be limited and short-lived. Elsewhere, general thunderstorms are forecast for the lower MS Valley westward into the Desert Southwest. ..Smith/Squitieri.. 09/05/2021 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)