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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.


Thursday, January 19, 2023

SPC Jan 19, 2023 0700 UTC Day 2 Convective Outlook

LIVE MAP (ABOVE) ... SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1247 AM CST Thu Jan 19 2023 Valid 201200Z - 211200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible from the middle Texas Gulf Coast into southern Louisiana early Saturday morning. ...Synopsis and Discussion... Strong mid-level western/southwesterly flow is expected to extend from AZ across the southern Plains and over much of the eastern CONUS ahead of southern-stream cyclone initially centered over AZ. This cyclone is forecast to move eastward across the Southwest throughout the day, ending the period centered over the southern High Plains. Surface cyclogenesis is anticipated Friday evening over eastern NM, helping to induce southerly low-level flow across southwest TX into the southern High Plains. However, scouring of the low-level moisture by a preceding frontal passage will limit moisture return across most of TX. The only exception is across deep south TX, where the most recent guidance indicates low 60s dewpoints will be in place early Saturday morning. Even with the better low-level moisture remaining offshore, warm-air advection is expected to support elevated thunderstorm development from the middle TX Coast into southern LA early Saturday morning. Vertical shear should be strong enough to support some organized updrafts, but buoyancy will be weak, mitigating any severe potential. ..Mosier.. 01/19/2023 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)