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000
CXAK57 PAJK 011427
CLMAJK

CLIMATE REPORT
NATIONAL WEATHER SERVICE JUNEAU, AK
630 AM AKDT SAT JUN 1 2013

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

...THE JUNEAU CLIMATE SUMMARY FOR THE MONTH OF MAY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1943 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              82   05/27/1947
 LOW               25   05/01/1972
                        05/11/1965
                        05/02/1956
HIGHEST            73   05/28        70       3       59  05/24
LOWEST             30   05/20        32      -2       35  05/15
                        05/07
AVG. MAXIMUM     56.1              56.6    -0.5     48.9
AVG. MINIMUM     39.8              40.6    -0.8     40.5
MEAN             48.0              48.6    -0.6     44.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      4               1.6     2.4        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.20   1992
 MINIMUM         0.84   2004
TOTALS           5.33              3.40    1.93     5.73
DAILY AVG.       0.17              0.11    0.06     0.18
DAYS >= .01        18              16.3     1.7       26
DAYS >= .10        12               9.3     2.7       16
DAYS >= .50         4               1.6     2.4        3
DAYS >= 1.00        1               0.3     0.7        0
GREATEST
 24 HR. TOTAL    1.10   05/31 TO 05/31           05/07 TO 05/08

SNOWFALL (INCHES)
RECORDS
 TOTAL            1.2   1964
 24 HR TOTAL      0.7   05/02/1945 TO 05/03/1945
 SNOW DEPTH         0   05/31/2002
TOTALS              T               0.0     0.0        T
SINCE 7/1        83.8              86.7    -2.9    134.3
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       1               0.0     1.0        2
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL        T   05/19 TO 05/19           05/15 TO 05/15

/DEGREE_DAYS
HEATING TOTAL     519               508      11      619
 SINCE 7/1       8536              8036     500     8184
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0

FREEZE DATES
RECORD
 EARLIEST     08/24/1969
 LATEST       06/13/1965
EARLIEST                        09/30
LATEST                          05/12
......................................................

WIND (MPH)
AVERAGE WIND SPEED              8.2
RESULTANT WIND SPEED/DIRECTION   3/135
HIGHEST WIND SPEED/DIRECTION    39/120    DATE  05/01
HIGHEST GUST SPEED/DIRECTION    50/120    DATE  05/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC              6
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     76

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       6
LIGHT RAIN               20     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                1     SLEET                      1
FOG                      17     FOG W/VIS <= 1/4 MILE      2
HAZE                      0

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

&&

...WET AND COOL START TO MAY GIVES WAY TO SUMMERLIKE WEATHER LATER IN
THE MONTH...

THE MONTH OF MAY FEATURED A WIDE RANGE OF WEATHER CONDITIONS IN JUNEAU.
WARM AND SUNNY CONDITIONS OCCURRED BETWEEN THE 5TH AND 9TH AND DURING
THE LAST 10 DAYS OF THE MONTH. CONDITIONS WERE COOLER AND WETTER THAN
NORMAL IN BETWEEN THESE DRY SPELLS. THIS RESULTED IN WHAT TURNED OUT TO
BE A GENERALLY NEAR NORMAL MAY IN TERMS OF TEMPERATURE. MOST OF THE
PRECIPITATION FELL DURING THE FIRST FEW DAYS OF THE MONTH...THE MIDDLE
OF THE MONTH...AND THE LAST COUPLE DAYS OF MAY. EASTERLY OFFSHORE FLOW
WAS THE PREDOMINANT WEATHER PATTERN IN THE LATTER HALF OF THE MONTH.
HOWEVER...THE HEAVIEST 24 HOUR RAINFALL EVENT OCCURRED ON THE LAST DAY
OF THE MONTH AS A WEATHER SYSTEM MOVED EAST INTO THE AREA FROM CANADA.
THE SYSTEM DROPPED 1.10 INCHES OF RAIN AT THE AIRPORT. THIS BROKE THE
DAILY RAINFALL RECORD OF 0.91 INCHES SET IN 1948. THE TOTAL
PRECIPITATION FOR THE MONTH ENDED AT 5.33 INCHES...WHICH WAS 1.93 INCHES
ABOVE NORMAL. THIS WAS ALL IN THE FORM OF RAIN EXCEPT FOR ICE PELLETS
THAT MIXED IN WITH RAIN SHOWERS ON THE 19TH.

THE STRONGEST WIND REPORTED AT THE AIRPORT WAS 50 MPH ON THE 1ST OF THE
MONTH. THE JUNEAU FEDERAL BUILDING ALSO RECEIVED ITS STRONGEST WIND OF
THE MONTH ON THIS DAY AS A 48 MPH GUST WAS REPORTED AROUND MIDDAY. A
STRONG FRONT MOVING ACROSS SOUTHEAST ALASKA CREATED THESE STRONG WINDS.

$$