Current Mesoscale DiscussionsUpdated: Tue Aug 11 08:02:02 UTC 2026Mesoscale Discussion #1918Issued: 11/0615 UTCUntil: 11/0815 UTCConcerning: SEVERE POTENTIAL...WATCH POSSIBLEAll times are UTCNotice: The responsibility for Heavy Rain Mesoscale Discussions has been transferred to the Weather Prediction Center (WPC) on April 9, 2013. Click here for the Service Change Notice. Archived Convective ProductsTo view convective products for a previous day, type in the date you wish to retrieve (e.g. 20040529 for May 29, 2004). Data available since January 1, 2004.