Climatological Report (Monthly)
Issued by NWS Annette, AK

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
000
CXAK57 PAJK 072018
CLMANN
CLIMATE REPORT
NATIONAL WEATHER SERVICE JUNEAU, AK
1109 AM AKST WED FEB 7 2018

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

...THE ANNETTE ISLAND CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART
                 VALUE   DATE(S)  VALUE   FROM
                                          NORMAL
................................................
TEMPERATURE (F)
RECORD
 HIGH              66   01/14/2018
 LOW               -4   01/30/1947
HIGHEST            66R  01/14
LOWEST             24   01/12
                        01/11
AVG. MAXIMUM     44.2              41.6     2.6
AVG. MINIMUM     34.5              32.4     2.1
MEAN             39.4              37.0     2.4
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32      2               3.2    -1.2
DAYS MIN <= 32      7              13.0    -6.0
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        20.69   1958
 MINIMUM         0.77   1950
TOTALS           3.92             10.73   -6.81
DAILY AVG.       0.20              0.35   -0.15
DAYS >= .01        16              22.1    -6.1
DAYS >= .10        12              17.4    -5.4
DAYS >= .50         1               7.6    -6.6
DAYS >= 1.00        0               3.1    -3.1
GREATEST
 24 HR. TOTAL    0.96   01/26 TO 01/26

DEGREE_DAYS
HEATING TOTAL     480               868    -388
 SINCE 7/1       2839              3775    -936
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0

FREEZE DATES
EARLIEST                        10/29
LATEST                          04/12
.................................................

WIND (MPH)
AVERAGE WIND SPEED              7.2
HIGHEST WIND SPEED/DIRECTION    21/120    DATE  01/29
HIGHEST GUST SPEED/DIRECTION    31/100    DATE  01/28


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                5     RAIN                       8
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                3     SLEET                      0
FOG                       7     FOG W/VIS <= 1/4 MILE      0
HAZE                      0

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

$$
...Extreme temperature variability in January 2018...

January of 2018 was particularly noteworthy for some dramatic
temperature swings. Most locations went from being well below normal
to having record warmth in a matter of only 4 days around the middle
of the month. During this time, parts of Southeast Alaska were
warmer than Key West Florida. Numerous sites posted daily highs in
the low 60s. The temperature at Annette Island rose to 66 degrees on
the 14th of the month, and Metlakatla achieved the same temperature
the following day. The 67 degrees recorded at the Ketchikan tide
gauge on the 14th of the month set an all-time record high for the
state of Alaska for the month of January. Another interesting fact
about these extrordinary temperatures is that, on more than one
occasion, the daily high temperature occurred in the late evening or
during the overnight hours. In all, 39 record high temperatures were
recorded across the panhandle between the 14th and the 18th of the
month.

The month began with a significant New Year`s Day snow event for
many locations, with heavy rain predominantly to the south. The
following day, significantly warmer air spread north, resulting in
heavy rain over much of the newly fallen snow. Temperatures then
fell well below normal at the start of the second week. A second
significant snow event occurred immediately prior to the record
warmth that occurred through the middle of the month. Once again,
warm post-frontal air and continuing precipitation with this system
in the form of rain assisted in melting new snow. By the third week
of January, temperatures began to trend downward as a result of high
pressure over western Canada and lower pressures over the Gulf of
Alaska, leading to strong northerly outflow winds. High winds
occurred in downtown Juneau and Skagway with storm force winds and
freezing spray over Lynn Canal. This pattern continued to deliver
relatively dry, cold, and windy conditions across much of the
panhandle into the fourth and final week of the month.

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.