Climatological Report (Monthly)
Issued by NWS Annette, AK

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317
CXAK57 PAJK 011442
CLMANN
Climate Report
NATIONAL WEATHER SERVICE JUNEAU, AK
632 AM AKDT SAT APR 1 2017

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

...The ANNETTE ISLAND climate summary for the month of March 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              64   03/28/1994
 Low                1   03/03/1955
Highest            52   03/29
Lowest             19   03/10
Avg. Maximum     43.0              44.9    -1.9
Avg. Minimum     33.1              34.5    -1.4
Mean             38.0              39.7    -1.7
Days Max >= 90      0               0.0     0.0
Days Max <= 32      0               0.7    -0.7
Days Min <= 32     13               9.2     3.8
Days Min <= 0       0               0.0     0.0

Precipitation (inches)
Record
 Maximum        23.57   1960
 Minimum         2.13   1983
Totals          12.00              8.05    3.95
Daily Avg.       0.39              0.26    0.13
Days >= .01        28              21.6     6.4
Days >= .10        25              15.8     9.2
Days >= .50         7               5.6     1.4
Days >= 1.00        3               1.7     1.3
Greatest
 24 Hr. Total    1.46   03/12 to 03/12

Snowfall (inches)
Records
 Total           46.9   1971
 Snow Depth      25.0   1972
Totals           30.2               6.9    23.3
Since 7/1        46.4              33.4    13.0
Days >= Trace      19               4.7    14.3
Days >= 1.0        13               2.0    11.0        0
Greatest
 Snow Depth         9   03/07
 24 Hr Total      6.5   03/18 to 03/18

DEGREE_DAYS
HEATING TOTAL     829               784      45
 SINCE 7/1       4915              5323    -408
COOLING TOTAL       0                 0       0
 SINCE 1/1          0                 0       0

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

Wind (mph)
Average Wind Speed              7.9
Highest Wind Speed/Direction    30/140    Date  03/12
Highest Gust Speed/Direction    46/150    Date  03/12


Weather Conditions. Number Of Days With
Thunderstorm              0     Mixed Precip               0
Heavy Rain                1     Rain                      11
Light Rain               22     Freezing Rain              0
Lt Freezing Rain          0     Hail                       0
Heavy Snow                5     Snow                       8
Light Snow               19     Sleet                      0
Fog                      26     Fog w/vis <= 1/4 mile      2
Haze                      6

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

$$
...A snowy end to Winter and beginning of Spring...

March was noteworthy for some very heavy snowfall that began in the
waning hours of February 28th and continued for nearly the entire
first half of the month.  A multi-day winter storm warning for the
Juneau area produced 16.9 inches of new snow at the forecast office
before stopping late in the night of the 13th. Heavy snow began once
again on the 15th and resulted in additional winter weather
advisories and warnings for the northern panhandle. What was most
unusual about these snow events is that they were not followed
immediately by low level warm air advection and a transition from
snow to rain. In fact, an extended cold outflow event followed the
first major snow event which allowed snow to remain on the ground
and present a true winter scene over most of the panhandle.

At least four unplanned avalanches reported with three in the Juneau
area and one in the Sitka area.

Bitterly cold temperatures also resulted in a protracted wind chill
advisory for the Klondike Highway as well as periods of heavy
freezing spray for several of the inner channels.

With the equinox on the 20th of March and the true beginning of
Spring, temperatures moderated a little with more rain and less
snow, particularly over the southern panahndle, but accumulating
snow lasted over northern and central portions of the panhandle
through the end of the month.

In spite of the all the March snow, the month broke no monthly
snowfall records in Yakutat, Juneau, or Annette Island which ranked
40th, 8th and 2nd snowiest, respectively.

$$

$$



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