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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, January 23, 2022

SPC Jan 23, 2022 0830 UTC Day 3 Severe Thunderstorm Outlook

SPC 0830Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0146 AM CST Sun Jan 23 2022 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible across portions of central and southern Florida. Severe thunderstorms are not expected. ...Synopsis and Discussion... A low amplitude, southern-stream shortwave trough is forecast to be located over the Lower MS Valley early Tuesday morning before then moving east-northeastward throughout the day. An attendant surface low will begin the period displaced slightly to the south of its parent shortwave. This surface low is expected to become increasingly displaced from its parent shortwave trough throughout the day, likely ending the period near the Keys/southwest FL. Moisture return across the FL Peninsula ahead of this low will be limited throughout much of the day Tuesday, until the stronger low-level southerly flow begins Tuesday evening. Consequently, only modest low-level moisture will be in place ahead of the approaching surface low. Additionally, mid-level temperatures will remain warm and the overnight timing of the low is unfavorable for surface-based instability. All of these factors suggest thunderstorm coverage will be rather limited across the region, with the severe thunderstorm threat also tempered by the meager buoyancy. Elsewhere, stable conditions are expected across the majority of the central and eastern CONUS under an expansive surface ridge. Dry conditions are anticipated across the western CONUS as well, as a shortwave trough moves southeastward across the Intermountain West and upper ridging begins building along the West Coast in its wake. ..Mosier.. 01/23/2022 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)