NZUS99 KBOU 181512 OPUDEN Developmental Probabilistic Snow Accumulation Forecast (DIA) National Weather Service Denver/Boulder, Colorado 0912 MDT Monday, May 18, 2026 -------------------------------------------------------------------------------- This developmental product contains the probabilities (%) that the given snow amounts (inches) will occur at Denver International Airport during the respective 3 hour or 12 hour periods. The probabilities indicate the amount of snow that is expected to accumulate on runways and other concrete surfaces at DIA. [T (trace) means more than zero.] -------------------------------------------------------------------------------- Discussion (18/12-19/12 MDT): Rain will continue today, with a 30-40% chance of a few snowflakes mixing in by late afternoon and early evening. No snow accumulation will occur due to warm air and pavement temperatures. 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 18/12-18/15 | 100 0 0 0 18/15-18/18 | 100 0 0 0 18/18-18/21 | 100 0 0 0 18/21-19/00 | 100 0 0 0 18/12-19/00 | 0 19/00-19/03 | 100 0 0 0 19/03-19/06 | 100 0 0 0 19/06-19/09 | 100 0 0 0 19/09-19/12 | 100 0 0 0 19/00-19/12 | 0 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 19/12-19/15 | 100 0 0 0 19/15-19/18 | 100 0 0 0 19/18-19/21 | 100 0 0 0 19/21-20/00 | 100 0 0 0 19/12-20/00 | 0 20/00-20/03 | 100 0 0 0 20/03-20/06 | 100 0 0 0 20/06-20/09 | 100 0 0 0 20/09-20/12 | 100 0 0 0 20/00-20/12 | 0