Climatological Report (Monthly)
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068
CXAK57 PAJK 031424
CLMYAK
Climate Report
NATIONAL WEATHER SERVICE JUNEAU, AK
618 AM AKDT TUE OCT 3 2017

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

...The YAKUTAT climate summary for the month of September 2017...

Climate normal period 1981 to 2010
Climate record period 1917 to 2017

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value
                                          Normal
.............................................................
Temperature (F)
Record
 High              77   09/04/1957
 Low               16   09/09/1940
Highest            74   09/05
Lowest             35   09/29
                        09/03
Avg. Maximum     56.9              55.6     1.3
Avg. Minimum     45.4              41.2     4.2
Mean             51.2              48.4     2.8
Days Max >= 90      0               0.0     0.0
Days Max <= 32      0               0.0     0.0
Days Min <= 32      0               3.6    -3.6
Days Min <= 0       0               0.0     0.0

Precipitation (inches)
Record
 Maximum        48.33   1987
 Minimum         2.44   1986
Totals          19.46             21.11   -1.65
Daily Avg.       0.65              0.70   -0.05
Days >= .01        24              21.7     2.3
Days >= .10        19              18.6     0.4
Days >= .50        13              12.5     0.5
Days >= 1.00        7               7.4    -0.4
Greatest
 24 Hr. Total    3.70   09/04 to 09/04

DEGREE_DAYS
HEATING TOTAL     410               498     -88
 SINCE 7/1        971              1174    -203
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0

FREEZE DATES
EARLIEST                        09/16
LATEST                          05/25
..............................................................

Wind (mph)
Average Wind Speed              4.2
Highest Wind Speed/Direction    28/130    Date  09/27
Highest Gust Speed/Direction    45/130    Date  09/27


Weather Conditions. Number Of Days With
Thunderstorm              0     Mixed Precip               0
Heavy Rain               10     Rain                      17
Light Rain               25     Freezing Rain              0
Lt Freezing Rain          0     Hail                       0
Heavy Snow                0     Snow                       0
Light Snow                0     Sleet                      0
Fog                      28     Fog w/vis <= 1/4 mile      5
Haze                      0

-  Indicates negative numbers.
R  Indicates record was set or tied.
MM Indicates data is missing.
T  Indicates Trace Amount.

$$
...Mostly normal September with some notable temperature and
precip records...

Warm summer-like temperatures did not last long into September for
Southeast Alaska, but there were some records set. In the first week
of the month, temperatures rose to the mid 70s and even the low 80s
at spots from one end of the panhandle to the other. High
temperature records were set in Sitka, Annette, Ketchikan, Klawock,
and Yakutat. For the remainder of the month, daily highs and lows
trended around normal values with some non-record breaking
excursions above an below normal in the second and third weeks as
well as the very last few days of the month.

Heavy rain fell during the first week of the month and then again
during the fourth week as a result of two atmospheric river events.
Here too there were some daily records set for multi-inch daily
values. Flood advisories were issued for the Taiya River near
Skagway during both atmospheric river events and the Labor day
weekend was particularly wet with anywhere from 1 to 3 inches of
rain recorded across the panhandle on the 4th of September. In spite
of the bookend atmospheric river heavy rain events, most locations
recorded near normal monthly accumulated precipitation. One notable
exception was Sitka, which came in well above normal for total
rainfall with over 15 inches of rain.

$$



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