Climatological Report (Monthly)
Issued by NWS Annette, AK

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657
CXAK57 PAJK 011329
CLMANN
Climate Report
NATIONAL WEATHER SERVICE JUNEAU, AK
528 AM AKDT MON MAY 1 2017

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

...The ANNETTE ISLAND climate summary for the month of April 2017...

Climate normal period 1981 to 2010
Climate record period 1941 to 2017

Weather         Observed          Normal  Depart  Last Year`s
                 Value   Date(s)  Value   From    Value
                                          Normal
.............................................................
Temperature (F)
Record
 High              82   04/29/1976
 Low               21   04/03/1954
Highest            69   04/22        MM      MM
Lowest             38   04/07        MM      MM
Avg. Maximum     54.9              50.2     4.7
Avg. Minimum     42.4              38.3     4.1
Mean             48.7              44.2     4.5
Days Max >= 90      0               0.0     0.0
Days Max <= 32      0               0.0     0.0
Days Min <= 32      0               2.0    -2.0
Days Min <= 0       0               0.0     0.0

Precipitation (inches)
Record
 Maximum           MM   MM
 Minimum           MM   MM
Totals           2.88              6.77   -3.89
Daily Avg.       0.10              0.23   -0.13
Days >= .01        16              18.8    -2.8
Days >= .10         9              12.7    -3.7
Days >= .50         2               4.8    -2.8
Days >= 1.00        0               1.6    -1.6
Greatest
 24 Hr. Total    0.80   04/04 to 04/05

Snowfall (inches)
Records
 Total             MM   MM
 24 Hr Total       MM
 Snow Depth        MM   MM
Totals            0.0               1.4    -1.4
Since 7/1        46.4              34.8    11.6
Snowdepth Avg.      0                MM      MM
Days >= Trace       0               1.6    -1.6
Days >= 1.0         0               0.5    -0.5        0
Greatest
 Snow Depth         0   MM
 24 Hr Total      0.0   04/30 to 04/30

DEGREE_DAYS
HEATING TOTAL     451               623    -172
 SINCE 7/1       5366              5946    -580
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0

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

Wind (mph)
Average Wind Speed              6.5
Highest Wind Speed/Direction    32/140    Date  04/05
Highest Gust Speed/Direction    49/150    Date  04/05


Weather Conditions. Number Of Days With
Thunderstorm              0     Mixed Precip               0
Heavy Rain                0     Rain                       6
Light Rain               22     Freezing Rain              0
Lt Freezing Rain          0     Hail                       0
Heavy Snow                0     Snow                       0
Light Snow                0     Sleet                      0
Fog                       8     Fog w/vis <= 1/4 mile      2
Haze                      1

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

$$
...A wintry start to April, followed by beautiful spring weather,
another bit of snow, followed by more fair spring weather...

April began with one storm system moving inland. Fairly typical
spring weather across southeast Alaska began the month with a few
weak storms bringing precipitation in the form of rain to sea level.

High pressure built over the eastern Gulf of Alaska heading into the
second week resulting in clearing skies and warming temperatures.
Numerous daytime high temperature records were set around mid month.
This warm and dry weather persisted into the following week before
high pressure over the Yukon advected a colder airmass to the
northern panhandle. This resulted in the next storm system bringing
late season snow to the northern inner channels, including a trace
of snow on the 19th at NWS WFO.

Periods of rain and a warming trend prevailed for the latter part of
the month with more daily record temperatures observed on the 22nd.

Overall, April was warm across the region. Annette Island recorded
the warmest and Skagway it`s second warmest average temperature on
record. Also, Yakutat recorded the warmest average maximum
temperature on record.

$$

$$



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