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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.


Friday, July 30, 2021

SPC Jul 31, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0751 PM CDT Fri Jul 30 2021 Valid 310100Z - 311200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM NEBRASKA INTO SOUTHWEST IOWA AND NORTHERN MISSOURI... ...SUMMARY... Thunderstorms may become capable of producing several instances of damaging wind later this evening into the overnight from Nebraska through southwestern Iowa into northern Missouri. A tornado or two cannot be ruled out over Nebraska this evening. ...Central Plains through middle Mississippi Valley areas... Isentropic ascent resulting from a strengthening southwesterly low-level jet should continue to foster the development of thunderstorms north of a warm front from NE into western and southern IA and northern MO tonight. Most of the initial storms have been discrete with some supercell characteristics. Weak lapse rates and a tendency for updrafts to become slightly elevated as the surface layer cools will remain limiting factors. Storms may eventually evolve into one or more organized line segments which will increase the potential for isolated damaging wind as they spread southeast this evening into the overnight. ..Dial.. 07/31/2021 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)