790
NZUS99 KBOU 210401
OPUAPA
Developmental Probabilistic Snow Accumulation Forecast (APA)
National Weather Service Denver/Boulder, Colorado
2101 MST Thursday, February 20, 2025

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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.]
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Discussion (20/23-21/23 MST): Snow will continue into Friday morning. There is
still high uncertainty with this system as the bands of heavy snow will not
cover a large area, but models have continued to trend heavier snowfall amounts
towards the southern Denver metro area. The most likely snowfall range will be 5
to 7 inches, although as little as 1 or as much as 9 inches is possible.
Snowfall rates of a quarter to half inch per hour are expected, but there could
be a few hours of 1 to 1.5 inch per hour.

                   0"    T or   1" or   3" or   10" or
Day/Hour MST             more    more    more     more
            --------------------------------------------------
20/23-21/02 |      10      90      60      20
21/02-21/05 |      20      80      60      10
21/05-21/08 |      30      70      10       0
21/08-21/11 |      50      50       0       0
20/23-21/11 |                                        0
21/11-21/14 |      80      20       0       0
21/14-21/17 |     100       0       0       0
21/17-21/20 |     100       0       0       0
21/20-21/23 |     100       0       0       0
21/11-21/23 |                                        0

                   0"    T or   1" or   3" or   10" or
Day/Hour MST             more    more    more     more
            --------------------------------------------------
21/23-22/02 |     100       0       0       0
22/02-22/05 |     100       0       0       0
22/05-22/08 |     100       0       0       0
22/08-22/11 |     100       0       0       0
21/23-22/11 |                                        0
22/11-22/14 |     100       0       0       0
22/14-22/17 |     100       0       0       0
22/17-22/20 |     100       0       0       0
22/20-22/23 |     100       0       0       0
22/11-22/23 |                                        0