WFO Denver/Boulder



Developmental Probabilistic Snow Accumulation Forecast
National Weather Service Denver/Boulder, Colorado
0248 MDT Friday, September 12, 2014

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This developmental product contains the probabilities (%) that the given snow
amounts (inches) will occur at Denver International Airport during the respec-
tive 6- or 12-hour periods.  The probabilities indicate the amount of snow that
will fall from the clouds.  They do not consider the amount of melting that may
or may not occur on various ground surfaces. [T (trace) means more than zero.]
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Short Term Discussion (12/12Z-13/12Z): Lingering drizzle and snow flurries are
expected to diminish between now and 6 AM, with no precipitation threat after 8
AM.  No snow accumulation is expected.

                 0"   T or    1" or    3" or    6" or   10" or
Day/Hour GMT          more     more     more     more     more
            --------------------------------------------------
12/12-12/18 |   90      10        0        0
12/18-13/00 |  100       0        0        0
12/12-13/00 |                                       0        0
13/00-13/06 |  100       0        0        0
13/06-13/12 |  100       0        0        0
13/00-13/12 |                                       0        0

Long Term Discussion (13/12Z-14/12Z): No snow is expected during the period.

                 0"   T or    1" or    3" or    6" or   10" or
Day/Hour GMT          more     more     more     more     more
            --------------------------------------------------
13/12-13/18 |  100       0        0        0
13/18-14/00 |  100       0        0        0
13/12-14/00 |                                       0        0
14/00-14/06 |  100       0        0        0
14/06-14/12 |  100       0        0        0
14/00-14/12 |                                       0        0

Deterministic Forecast for Denver International Airport created at
0239 MDT Friday, September 12, 2014

Valid at  Sky  PoP  CWR   T  Td  AT  RH   Wind(mph)    QPF  Snow  Tx RHn  Tn RHx
MM/DD:UT    %    %    %   F   F   F   %  Dir  Sp  Gs  inch  inch   F   %   F   %
================================================================================
09/12:12  100   19    4  34  34  28 100   NE   7   7  ----  ----                
09/12:13   99   10    2  34  34  28 100  ENE   6   6    |     |           33 100
09/12:14   98    9    2  34  34  29 100    E   6   6    |     |                 
09/12:15   97    7    1  36  34  31  93    E   6   6  0.00   0.0                
09/12:16   92    6    1  37  34  32  89    E   6   6    |     |                 
09/12:17   87    4    1  39  34  34  82  ESE   7   7    |     |                 
09/12:18   81    3    1  42  34  38  73  ESE   7   7  ----  ----                
09/12:19   70    2    0  45  34  41  66  ESE   7   7    |     |                 
09/12:20   58    1    0  47  35  43  61  ESE   8   8    |     |                 
09/12:21   46    0    0  50  35  47  56    E   8   8  0.00   0.0                
09/12:22   39    0    0  53  35  53  50  ESE   8   9    |     |   53  49        
09/12:23   32    0    0  53  34  53  49   SE   9  10    |     |                 
09/13:00   25    0    0  52  34  52  50   SE   9  14  ----  ----                
09/13:01   24    0    0  49  34  45  56   SE   9  10    |     |                 
09/13:02   22    0    0  47  34  43  62  SSE   8   9    |     |                 
09/13:03   21    0    0  44  34  39  69  SSE   8   9  0.00   0.0                
09/13:04   19    0    0  42  35  36  75  SSE   9  10    |     |                 
09/13:05   18    0    0  40  35  34  82    S   9  14    |     |                 
09/13:06   16    0    0  38  35  31  89    S  10  16  ----  ----                
09/13:07   14    0    0  38  35  31  90    S  10  16    |     |                 
09/13:08   16    0    0  38  35  31  90    S  10  15    |     |                 
09/13:09   18    0    0  38  35  31  90    S  10  15  0.00   0.0                
09/13:10   20    0    0  38  34  31  88  SSW   9  10    |     |                 
09/13:11   21    0    0  38  33  32  86   SW   7   7    |     |                 
09/13:12   23    0    0  38  33  33  84   SW   6   6  ----  ----                
09/13:13   20    0    0  42  35  38  76   SW   5   5    |     |           37  90
09/13:14   18    0    0  46  35  45  66  WSW   3   3    |     |                 
09/13:15   15    0    0  52  36  52  55  WSW   3   3  0.00   0.0                
09/13:16   12    0    0  57  37  57  47    W   3   3    |     |                 
09/13:17   12    0    0  61  37  61  41   NE   3   3    |     |                 
09/13:18   13    0    0  65  37  65  36  ENE   5   5  ----  ----                
09/13:19   14    0    0  68  37  68  32  ENE   6   6    |     |                 
09/13:20   15    0    0  71  36  71  28  ENE   7   7    |     |                 
09/13:21   15    0    0  72  36  72  27  ENE   8   9  0.00   0.0                
09/13:22   16    0    0  73  36  73  26    E   9  13    |     |   73  26        
09/13:23   17    0    0  72  36  72  27    E  10  15    |     |                 
09/14:00   27    0    0  71  37  71  30    E  10  15  ----  ----                
09/14:01   27    0    0  67  38  67  35    E   9  13    |                       
09/14:02   27    0    0  63  40  63  42  ESE   8   8    |                       
09/14:03   27    0    0  59  41  59  50  ESE   7   7  0.00                      
09/14:04   27    0    0  56  42  56  57  SSE   6   6    |                       
09/14:05   27    0    0  54  42  54  62  SSW   5   5    |                       
09/14:06    9    0    0  53  42  53  65   SW   5   5  ----                      
09/14:07    9    0    0  52  42  52  67   SW   5   5    |                       
09/14:08    9    0    0  51  42  51  69   SW   6   6    |                       
09/14:09    9    0    0  50  41  49  71   SW   7   7  0.00                      
09/14:10    9    0    0  49  40  46  70   SW   8   8    |                       
09/14:11    9    0    0  48  39  45  70   SW   8   8    |                       
09/14:12   19    0    0  49  38  46  66   SW   8   8  ----                      
________________________________________________________________________________
Sky= Amount of sky covered by opaque clouds (percent)
PoP= Probability of receiving .01 inch or more liquid (melted, if frozen) precip
CWR= Probability of receiving .10 inch or more liquid (melted, if frozen) precip
T  = Air temperature (degrees Fahrenheit)
Td = Dew point temperature (degrees Fahrenheit)
AT = Apparent temperature (wind chill or heat index; degrees Fahrenheit)
RH = Relative humidity (percent)
Dir= Compass direction from which the wind is blowing (e.g. NE= northeast)
Sp = Wind speed (miles per hour)
Gs = Wind gust speed (miles per hour)
QPF= Liquid precip amount (inches) expected thru the 6-hour period between ----
Snow= Snow amount (inches) expected during the 6-hour period between ---
Tx = Maximum temperature (F) during the period ending at the given hour
RHn= Minimum relative humidity (%) during the period ending at the given hour
Tn = Minimum temperature (F) during the period ending at the given hour
RHx= Maximum relative humidity (%) during the period ending at the given hour

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