NZUS99 KBOU 050258 OPUAPA Developmental Probabilistic Snow Accumulation Forecast (APA) National Weather Service Denver/Boulder, Colorado 2058 MDT Monday, May 04, 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 (04/21-06/00 MDT): The next storm will bring widespread precipitation to APA starting tonight and continuing all the way through Wednesday evening, May 6th. The precipitation type will mainly be rain tonight and Tuesday. The rain will change over the snow Tuesday evening, with snow continuing to fall Tuesday night into Wednesday morning. Temperatures look to stay above freezing tonight and Tuesday, dropping to near freezing Tuesday evening and staying below freezing through Wednesday morning. Snowfall is not expected to accumulate on the paved surfaces until late Tuesday evening, with perhaps a slushy inch or two by Wednesday morning. Higher accumulations as possible on non-paved surfaces where up to 9 inches are possible with this storm. 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 04/21-05/00 | 100 0 0 0 05/00-05/03 | 100 0 0 0 05/03-05/06 | 100 0 0 0 05/06-05/09 | 100 0 0 0 05/09-05/12 | 100 0 0 0 05/00-05/12 | 0 05/12-05/15 | 100 0 0 0 05/15-05/18 | 90 10 0 0 05/18-05/21 | 40 60 0 0 05/21-06/00 | 0 100 30 0 05/12-06/00 | 0 0" T or 1" or 3" or 10" or Day/Hour MDT more more more more -------------------------------------------------- 06/00-06/03 | 0 100 45 0 06/03-06/06 | 0 100 50 0 06/06-06/09 | 5 95 40 0 06/09-06/12 | 10 90 0 0 06/00-06/12 | 0 06/12-06/15 | 50 50 0 0 06/15-06/18 | 75 25 0 0 06/18-06/21 | 100 0 0 0 06/21-07/00 | 100 0 0 0 06/12-07/00 | 0