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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 6, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0757 PM CDT Sun Sep 05 2021 Valid 060100Z - 061200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... No organized severe threats are expected across the continental United States tonight. ...Synopsis... A mid-level trough will continue to amplify over the Northeast while an upper ridge remains in place across the West. A surface cold front will continue to sag southward across the southern U.S., with enough low-level convergence along the cold front to support continued redevelopment of isolated to scattered thunderstorms through the night. Farther west, a strong storm or two remains possible across portions of the central/southern High Plains into the Southwest, though boundary-layer stabilization will limit the severe threat. ...Southeast Arizona into the New Mexico Panhandle... Strong to occasionally severe multicellular thunderstorm clusters have produced measured severe gusts over the past few hours in southeastern AZ. However, rapidly expanding cold pools have resulted in convective overturning of the airmass across the region. While a strong wind gust remains possible across southeast AZ into the NM Panhandle over the next couple of hours, further convective overturning and nocturnal cooling will limit the severe threat through the remainder of the period, with no severe probabilities introduced. ...Central and Southern High Plains... Relatively robust, discrete thunderstorm development has occurred from eastern NM into the northwest TX/OK Panhandles and western KS late this afternoon, with marginally severe wind/hail recently reported in Sheridan County, KS. However, with an overall lack of deep-layer ascent, and given the loss of daytime heating with increasing convective inhibition, storms are expected to weaken through the evening. While an occasional flare up in storm intensity may support a strong gust/large hailstone over the next hour or two, any severe threat that materializes should be too brief and localized to warrant the introduction of severe probabilities. ..Squitieri/Smith.. 09/06/2021 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)