Climatological Report (Monthly)
Issued by NWS

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CXAK58 PACD 020039
CLMCDB


CLIMATE REPORT
NATIONAL WEATHER SERVICE ANCHORAGE, AK
336 PM AKST MON JAN 1 2018

...................................

...THE COLD BAY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1942 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              54   12/11/1990
                        12/24/1973
 LOW               -9   12/29/1950
HIGHEST            50                MM      MM       50
LOWEST             13                MM      MM       15
AVG. MAXIMUM     38.6              35.6     3.0     37.6
AVG. MINIMUM     28.1              26.6     1.5     28.6
MEAN             33.4              31.1     2.3     33.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      2               7.2    -5.2        5
DAYS MIN <= 32     21              21.4    -0.4       20
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM           MM   MM
 MINIMUM           MM   MM
TOTALS           4.63              4.46    0.17     5.67
DAILY AVG.       0.15              0.14    0.01     0.18
DAYS >= .01        23              23.6    -0.6       29
DAYS >= .10        13              11.7     1.3       18
DAYS >= .50         1               2.2    -1.2        3
DAYS >= 1.00        1               0.7     0.3        0
GREATEST
 24 HR. TOTAL    1.92   12/22 TO 12/22           12/15 TO 12/16
                                                          12/09 TO 12/09
                                                          12/09 TO 12/09
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM                    12/16(00) TO 12/16(00)
                                                 12/09(00) TO 12/09(00)9
                                                 12/09(00) TO 12/09(00)9

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
 24 HR TOTAL       MM
 SNOW DEPTH        MM   MM
TOTALS           20.8              12.6     8.2     15.1
SINCE 7/1        23.0              25.2    -2.2     16.9
SNOWDEPTH AVG.      2                 3      -1        1
DAYS >= TRACE      19              14.1     4.9       24
DAYS >= 1.0         4               4.9    -0.9
GREATEST
 SNOW DEPTH        10   12/22                          8  12/11
 24 HR TOTAL     12.9   12/22 TO 12/22           12/09 TO 12/09
                                                          12/09 TO 12/09
                                                          12/09 TO 12/09
 STORM TOTAL       MM                                 MM
 (MM/DD(HH))            MM

DEGREE_DAYS
HEATING TOTAL     970              1051     -81      980
 SINCE 7/1       3693              4071    -378     3330
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0

FREEZE DATES
RECORD
 EARLIEST     MM
 LATEST       MM
EARLIEST                        MM
LATEST                          MM
..........................................................

WIND (MPH)
AVERAGE WIND SPEED              14.3
RESULTANT WIND SPEED/DIRECTION   2/171
HIGHEST WIND SPEED/DIRECTION    53/180    DATE  12/18
HIGHEST GUST SPEED/DIRECTION    60/110    DATE  12/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY         12

AVERAGE RH (PERCENT)     86

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                      10
LIGHT RAIN               24     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW               18     SLEET                      0
FOG                      25     FOG W/VIS <= 1/4 MILE      2
HAZE                      3

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

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