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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, April 24, 2022

SPC Apr 24, 2022 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0211 AM CDT Sun Apr 24 2022 Valid 261200Z - 271200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Tuesday. ...Synopsis... A progressive mid/upper level pattern is forecast on Tuesday. A large-scale trough from the Upper Midwest to the Lower MS Valley will shift east toward the lower Great Lakes the southeastern U.S. coast. Further west, a mid/upper trough near the Pacific coast will move inland across the West while an upper ridge over the Rockies develops east into the Plains. A weak surface low will be located over the Mid-Atlantic vicinity, with a cold front extending from eastern PA through the VA/NC Piedmont and then southwest toward the central Gulf coast. Ahead of the front, modest boundary-layer moisture will be in place, with mid/upper 50s to near 60 F dewpoints extending from the Southeast toward the Chesapeake Bay vicinity. Modest heating will result in weak destabilization ahead of the front and isolated thunderstorms are expected. However, poor midlevel lapse rates and weak vertical shear will limit severe potential. Additional low-topped, non-severe thunderstorms are possible across parts of the Pacific Northwest. Cooling aloft associated with the eastward-progressing upper trough will result in steepening low/midlevel lapse rates, aiding in weak destabilization (100-200 J/kg MLCAPE) and isolated thunderstorm potential during the afternoon and evening. ..Leitman.. 04/24/2022 Read more CHECK UPDATE ZOOM GRAPHIC
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)