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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, April 7, 2023

SPC Apr 7, 2023 0600 UTC Day 1 Convective Outlook

LIVE MAP (ABOVE) ... SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1248 AM CDT Fri Apr 07 2023 Valid 071200Z - 081200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE LOWER MISSISSIPPI VALLEY AND CENTRAL GULF COAST... ...SUMMARY... Isolated severe storms will be possible in parts of the lower Mississippi Valley and central Gulf Coast states today. A few damaging wind gusts and hail will be possible. ...Lower Mississippi Valley/Central Gulf Coast States... Flow at mid-levels will be from the southwest today across the Gulf Coast states, as a couple subtle shortwave troughs move northeastward across the region. At the surface, a quasi-stationary front will be located from the western Gulf of Mexico northeastward into southeast Louisiana and far southern Mississippi, where dewpoints will be in the upper 60s and lower 70s F. As surface temperatures warm today, the airmass will destabilize across southeast Louisiana. Thunderstorms will likely develop near the front and move east-northeastward into this unstable airmass. RAP Forecast soundings around New Orleans by early afternoon have MLCAPE near 1500 J/kg with 0-3 km lapse rates between 7 and 7.5 C/km. Although winds are forecast to be relatively weak in the low levels, speed shear above 700 mb will create sufficient deep-layer shear for a marginal severe threat. Storms that form along and to the south of the front will likely be surface-based. These storms could produce isolated wind damage and hail. The severe threat could persist into the evening as a subtle shortwave trough approaches the central Gulf Coast. ..Broyles/Wendt.. 04/07/2023 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)