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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.


Monday, September 26, 2022

SPC Sep 26, 2022 0600 UTC Day 1 Convective Outlook

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1228 AM CDT Mon Sep 26 2022 Valid 261200Z - 271200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS THE FLORIDA KEYS... ...SUMMARY... Risk for damaging winds and brief tornadoes will increase late Monday night across the Florida Keys. ...FL Keys... Tropical Storm Ian has progressed to near 17N/81W as of late this evening and is forecast to strengthen into a major hurricane by the end of the day1 period as it tracks across the western tip of Cuba. This evolution is expected to result in strengthening wind fields across the southeastern Gulf Basin, including the FL Keys late. Forecast soundings for EYW exhibit ample buoyancy for robust updrafts within a sheared environment that will support organized rotating updrafts, as tropical air mass already resides across this region. Supercell structures are expected to materialize within the outer bands which should encroach on the Keys primarily after midnight. ...Northeastern US... Strong 500mb speed max is forecast to track into southern OH by the start of the day1 period, then progress to the southern New England Coast by 27/00z. Cooling mid-level temperatures (500mb temperatures CHECK UPDATE ZOOM GRAPHIC
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