496  
CXAK58 PACD 012133 CCA  
CLMCDB  
 
CLIMATE REPORT  
NATIONAL WEATHER SERVICE ANCHORAGE, AK  
621 AM AKST TUE JAN 1 2019  
   
...............................
 
 
   
..THE COLD BAY CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018
 
 
CLIMATE NORMAL PERIOD 1981 TO 2010  
CLIMATE RECORD PERIOD 1942 TO 2018  
 
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 45 MM MM 50  
LOWEST 14 MM MM 13  
AVG. MAXIMUM 34.9 35.6 -0.7 38.6  
AVG. MINIMUM 25.7 26.6 -0.9 28.1  
MEAN 30.3 31.1 -0.8 33.4  
DAYS MAX >= 90 0 0.0 0.0 0  
DAYS MAX <= 32 10 7.2 2.8 2  
DAYS MIN <= 32 26 21.4 4.6 21  
DAYS MIN <= 0 0 0.0 0.0 0  
 
PRECIPITATION (INCHES)  
RECORD  
MAXIMUM MM MM  
MINIMUM MM MM  
TOTALS 4.71 4.46 0.25 4.63  
DAILY AVG. 0.15 0.14 0.01 0.15  
DAYS >= .01 22 23.6 -1.6 23  
DAYS >= .10 12 11.7 0.3 13  
DAYS >= .50 4 2.2 1.8 1  
DAYS >= 1.00 0 0.7 -0.7 1  
GREATEST  
24 HR. TOTAL 0.78 12/29 TO 12/29 12/22 TO 12/22  
12/22 TO 12/22EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
12/22 TO 12/22EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
STORM TOTAL MM MM  
(MM/DD(HH)) MM 12/22(00) TO 12/22(00)  
12/22(00) TO 12/22(00)2EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
12/22(00) TO 12/22(00)2EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
 
SNOWFALL (INCHES)  
RECORDS  
TOTAL MM MM  
24 HR TOTAL MM  
SNOW DEPTH MM MM  
TOTALS 21.5 12.6 8.9 20.8  
SINCE 7/1 24.7 25.2 -0.5 23.0  
SNOWDEPTH AVG. 2 3 -1 2  
DAYS >= TRACE 22 14.1 7.9 19  
DAYS >= 1.0 7 4.9 2.1  
GREATEST  
SNOW DEPTH 5 12/19 10 12/22  
24 HR TOTAL 4.0 12/09 TO 12/09 12/22 TO 12/22  
12/22 TO 12/22EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
12/22 TO 12/22EATHER OBSERVED NORMAL DEPART LAST YEAR'S  
STORM TOTAL MM MM  
(MM/DD(HH)) MM  
 
DEGREE_DAYS  
HEATING TOTAL 1065 1051 14 970  
SINCE 7/1 3607 4071 -464 3693  
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 18.2  
RESULTANT WIND SPEED/DIRECTION 5/347  
HIGHEST WIND SPEED/DIRECTION 67/150 DATE 12/29  
HIGHEST GUST SPEED/DIRECTION 79/150 DATE 12/29  
 
SKY COVER  
POSSIBLE SUNSHINE (PERCENT) MM  
AVERAGE SKY COVER 0.70  
NUMBER OF DAYS FAIR 2  
NUMBER OF DAYS PC 12  
NUMBER OF DAYS CLOUDY 17  
 
AVERAGE RH (PERCENT) 82  
 
WEATHER CONDITIONS. NUMBER OF DAYS WITH  
THUNDERSTORM 0 MIXED PRECIP 10  
HEAVY RAIN 0 RAIN 7  
LIGHT RAIN 14 FREEZING RAIN 0  
LT FREEZING RIAN 2 HAIL 0  
HEAVY SNOW 5 SNOW 9  
LIGHT SNOW 2 SLEET 0  
FOG 24 FOG W/VIS <= 1/4 MILE 8  
HAZE 9  
 
 
- INDICATES NEGATIVE NUMBERS.  
R INDICATES RECORD WAS SET OR TIED.  
MM INDICATES DATA IS MISSING.  
T INDICATES TRACE AMOUNT.  
 

 
 
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