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MOBILE DEVICE? Turn sideways. Weather conditions directly above are near Lakefront. Top tabs refer to O'Hare (official).

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.

Wednesday, August 4, 2021

SPC Aug 5, 2021 0100 UTC Day 1 Convective Outlook

SPC 0100Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0720 PM CDT Wed Aug 04 2021 Valid 050100Z - 051200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF MONTANA... ...SUMMARY... A few lingering strong/severe thunderstorms are possible across parts of Montana from this evening. ...MT... Early-evening water-vapor imagery depicts a well-defined short-wave trough topping the ridge over southeast BC/northwestern MT. Mid-level height field will be suppressed across northern MT this evening ahead of this feature which may contribute to thunderstorms lingering across this portion of the state, especially northern portions of the MRGL risk region. With surface dew points only in the 30s/40s, PW values approaching one inch may produce gusty downdrafts for the next few hours. ..Darrow.. 08/05/2021 Read more LIVE: