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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.


Saturday, June 25, 2022

SPC Jun 25, 2022 0730 UTC Day 3 Severe Thunderstorm Outlook

SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0147 AM CDT Sat Jun 25 2022 Valid 271200Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for severe thunderstorms appears negligible across the U.S. Monday through Monday night. ...Synopsis... Large-scale flow will remain split across the northeastern Pacific and northwestern North America vicinity, but the mid-level high initially centered near the southern Alaska/Yukon border may weaken during this period. Models suggest that the lingering low to its south may remain fairly vigorous while continuing to gradually accelerate toward the Pacific Northwest coast, but it appears that the mid-level cold core will remain offshore through early Tuesday. Downstream, it appears that the westerlies will converge into a northwesterly regime from the lee of the Canadian Rockies into broad mid-level troughing across much of eastern Canada and the upper U.S. Mississippi Valley through the middle and northern Atlantic Seaboard. The leading edge of accompanying lower/mid tropospheric cooling and drying is forecast to advance across the northern and middle Atlantic Seaboard, while stalling across the Gulf Coast states. Along and south of the front, seasonably moist boundary-layer air and daytime heating may once again contribute to a corridor of moderately large CAPE, across portions of eastern Texas, Louisiana and Mississippi into the southern Appalachians by Monday afternoon. However, this will be focused within weak flow and shear to the south of the westerlies. The potential for heavy precipitation loading may contribute to some risk for downbursts in scattered convection across the Southeast Monday afternoon and evening, while deep boundary layer mixing also contributes to a risk for downbursts in scattered thunderstorms across parts of the Southwest and northern intermountain region. Overall, though, this is generally expected to remain rather sparse in coverage, with probabilities for severe gusts still appearing less than 5 percent. ..Kerr.. 06/25/2022 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)