308
NZUS99 KBOU 171446
OPUDEN
Developmental Probabilistic Snow Accumulation Forecast (DIA)
National Weather Service Denver/Boulder, Colorado
0846 MDT Thursday, April 17, 2025

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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.]
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Discussion (17/09-18/12 MDT): Rain showers will develop Thursday evening after
9pm following a cold front, with a rain/snow mix or even brief freezing rain
possible between 10pm and 1am tonight. Past midnight, precipitation should
transition to snow, with generally light to moderate intensity and snowfall
rates 0.5"/hr or less. Fairly steady snow will continue through the day Friday,
and taper off by Saturday morning. Air and pavement temperatures are likely to
be marginal for most of the day Friday, with any accumulations being primarily
confined to grassy and colder surfaces. Snow accumulation on runways and
taxiways will become more likely after 6pm Friday as temperatures drop to or
below freezing. Total accumulations on runways/taxiways of 1 to 3" expected
through Saturday, occurring mainly Friday evening and night. Total accumulations
on colder surfaces may be closer to 2 to 5" through Saturday.

                   0"    T or   1" or   3" or   10" or
Day/Hour MDT             more    more    more     more
            --------------------------------------------------
17/09-17/12 |     100       0       0       0
17/12-17/15 |     100       0       0       0
17/15-17/18 |     100       0       0       0
17/18-17/21 |     100       0       0       0
17/21-18/00 |      85      15       0       0
17/12-18/00 |                                        0
18/00-18/03 |      25      75      20       0
18/03-18/06 |      20      80      20       0
18/06-18/09 |      20      80      15       0
18/09-18/12 |      20      80      15       0
18/00-18/12 |                                        0

                   0"    T or   1" or   3" or   10" or
Day/Hour MDT             more    more    more     more
            --------------------------------------------------
18/12-18/15 |      20      80      20       0
18/15-18/18 |      20      80      25       0
18/18-18/21 |      20      80      50       0
18/21-19/00 |      20      80      60       0
18/12-19/00 |                                        0
19/00-19/03 |      50      50       0       0
19/03-19/06 |      80      20       0       0
19/06-19/09 |      95       5       0       0
19/09-19/12 |     100       0       0       0
19/00-19/12 |                                        0