NZUS99 KBOU 181516 OPUAPA Developmental Probabilistic Snow Accumulation Forecast (APA) National Weather Service Denver/Boulder, Colorado 0916 MDT Monday, May 18, 2026 -------------------------------------------------------------------------------- This developmental product contains the probabilities (%) that the given snow amounts (inches) will occur at Centennial 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 APA. [T (trace) means more than zero.] -------------------------------------------------------------------------------- Discussion (18/12-19/12 MDT): Rain will continue today, with a 40-50% 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. Precipitation will end by midnight or shortly thereafter. 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