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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.

ARLINGTON HEIGHTS WEATHER

Sunday, November 28, 2021

SPC Nov 28, 2021 0700 UTC Day 2 Convective Outlook

SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1115 PM CST Sat Nov 27 2021 Valid 291200Z - 301200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk of thunderstorms appears negligible across the U.S. Monday through Monday night. ...Discussion... As mid-level ridging builds within the westerlies across the mid-latitude eastern Pacific, toward British Columbia and the Pacific Northwest, models indicate that a couple of short wave perturbations within weakly separated branches of downstream flow may progress inland through the Canadian Prairies and northern U.S. Rockies during this period. However, larger-scale flow appears likely to remain broadly anticyclonic, with relatively warm mid-levels and little appreciable low-level moistening maintaining generally stable conditions. East of the Rockies, broadly confluent northwesterly flow appears likely to persist, in the wake of large-scale mid-level troughing forecast to take on an increasing negative tilt offshore of the Atlantic Seaboard. It appears that this will occur as a vigorous embedded short wave trough pivots northeast of the northern Mid Atlantic and New England coast, with associated forcing for large-scale ascent contributing to strong continuing surface cyclogenesis east of the Cape Cod vicinity into the Canadian Maritimes by late Monday night. Models indicate that a trailing reinforcing intrusion of cold/dry air probably will spread as far south and west as the northern and eastern Gulf of Mexico, with surface ridging building along an axis near the Gulf coast. ..Kerr.. 11/28/2021 Read more LIVE: spc.noaa.gov
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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)