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000
CXAK57 PAJK 180017
CLAYAK

CLIMATE REPORT
NATIONAL WEATHER SERVICE JUNEAU AK
239 PM AKST WED JAN 17 2024

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

...THE YAKUTAT CLIMATE SUMMARY FOR THE YEAR OF 2023...

CLIMATE NORMAL PERIOD: 1991 TO 2020
CLIMATE RECORD PERIOD: 1917 TO 2024

WEATHER         OBSERVED          NORMAL  DEPART   LAST YEAR`S
                VALUE   DATE(S)   VALUE   FROM     VALUE DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             88   08/15/2004
 LOW             -24   12/30/1964
HIGHEST           77   05/18         MM      MM       82  06/04
LOWEST            -3   02/28         MM      MM      -12  01/06
AVG. MAXIMUM    47.8               48.1    -0.3
AVG. MINIMUM    36.0               34.0     2.0
MEAN            41.9               41.1     0.8     41.5
DAYS MAX >= 90     0                0.0     0.0        0
DAYS MAX <= 32    17               34.0   -17.0       33
DAYS MIN <= 32   134              156.8   -22.8      145
DAYS MIN <= 0      2                3.7    -1.7        4

PRECIPITATION (INCHES)
RECORD
 MAXIMUM      250.24   1987
 MINIMUM       85.99   1950
TOTALS        131.86             140.36   -8.50   162.51
DAILY AVG.      0.36               0.38   -0.02
DAYS >= .01      235              236.9    -1.9      188
DAYS >= .10      176              180.7    -4.7      148
DAYS >= .50       90               90.9    -0.9       71
DAYS >= 1.00      46               45.3     0.7       33
GREATEST
 24 HR. TOTAL   3.34   12/11 TO 12/12
 STORM TOTAL    3.29
 (MM/DD(HH))


DEGREE DAYS
HEATING TOTAL   8053               8706    -653     8317
 SINCE 7/1      3387               3806    -419
COOLING TOTAL      0                  0       0        0
 SINCE 1/1         0                  0       0

FREEZE DATES
EARLIEST                        09/25
LATEST                          05/07
................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.5
HIGHEST WIND SPEED/DIRECTION    43/060    DATE  11/20
HIGHEST GUST SPEED/DIRECTION    62/140    DATE  12/23


WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN               49     RAIN                     127
LIGHT RAIN              222     FREEZING RAIN              1
LT FREEZING RAIN          3     HAIL                       0
HEAVY SNOW                8     SNOW                      17
LIGHT SNOW               76     SLEET                      0
FOG                     301     FOG W/VIS <= 1/4 MILE     39
HAZE                     16

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

$$

WHILE PRECIPITATION WAS GENERALLY ABOVE NORMAL FOR SOUTHEAST ALASKA,
THE BIGGER STORY WAS THE WARMER THAN NORMAL CONDITIONS THAT ALL
LOCATIONS EXPERIENCED. BUT IN AN AGE OF A WARMING GLOBAL CLIMATE,
THIS SHOULD NOT BE TOO SURPRISING.

SITKA EXPERIENCED ITS 2ND WARMEST YEAR ON RECORD, JUNEAU ITS 6TH
WARMEST, KETCHIKAN ITS 13TH WARMEST, AND YAKUTAT ITS 13TH WARMEST
YEAR. TO PUT THIS INTO PERSPECTIVE, THE SHORTEST OF THESE RECORDS IS
SITKA AND IT GOES BACK TO 1944. THE LONGEST RECORD, YAKUTAT, GOES
BACK TO 1910. THERE WERE SOME NOTABLE COLD SPELLS ACROSS ALL OF
SOUTHEAST ALASKA; THE LAST WEEK OF FEBRUARY THROUGH THE SECOND WEEK
OF MARCH AND THEN AGAIN AT THE END OF OCTOBER. HOWEVER, WHEN LOOKING
AT THE DAILY TEMPERATURE RANGES FOR EACH OF THE 4 CLIMATE SITES
PLOTTED AGAINST THE NORMAL DAILY HIGHS AND LOWS, TWO THINGS BECOME
OBVIOUS. FIRST OF ALL, OVERNIGHT LOWS DID NOT GET DOWN TO OR BELOW
NORMAL NEARLY AS OFTEN AS DAYTIME HIGHS ROSE TO ABOVE NORMAL VLAUES.
SECONDLY, THE DEGREE TO WHICH DAILY HIGHS WERE HIGHER THAN NORMAL
WAS SIGNIFICANTLY GREATER THAN THE DEGREE TO WHICH OVERNIGHT LOWS
WERE LOWER THAN NORMAL, MEANING THAT THE AVERAGE DAILY TEMPERATURES
WERE SKEWED WARMER THAN NORMAL.  ALSO NOT SURPRISINGLY, DAILY HIGH
TEMPERATURE RECORDS WERE SET 21 TIMES THROUGH THE YEAR WITH AT LEAST
ONE EVENT AT EACH OF THE CLIMATE SITES.  CONVERSELY, ONLY 2 RECORD
LOW TEMPERATURES WERE RECORDED DURING THE YEAR; ONCE AT JUNEAU AND
ONCE AT SITKA. INTERESTINGLY, AS THE LA NINA WINTER OF 2022-2023
ENDED, MANY WERE EXPECTING TO SEE BELOW NORMAL TEMPERATURES FOR THE
SEASON. IN FACT, ONLY KETCHIKAN CLOSED OUT THE WINTER WITH BELOW
NORMAL TEMPERATURES. THIS WAS DUE IN LARGE PART TO A VERY WARM
JANUARY ACROSS SOUTHEAST ALASKA.

THE BEGINNING OF SPRING FEATURED HEAVY SNOW ON THE 1ST OF MARCH AND
THEN AGAIN AT THE MIDDLE OF THE MONTH, BUT VERY LITTLE AFTER THAT
TIME. PRECIPITATION TOTALS FOR THE MONTH WERE, HOWEVER, BELOW NORMAL
AND THE EXCESS SNOW WAS A RESULT OF COLDER THAN NORMAL TEMPERATURES.

TEMPERATURES FINALLY TRENDED ABOVE NORMAL BY MAY AND WHAT FOLLOWED
WAS SOME EXCELLENT SUMMER IN SPITE OF PRECIPITATION REMAINING ABOVE
NORMAL THROUGH JUNE. THE SUMMER ENDED IN AUGUST WITH A GLACIALLY
DAMMED LAKE RELEASE AT SUICIDE BASIN. THIS RELEASE PRODUCED AN ALL
TIME RECORD FLOODING EVENT ON THE MENDENHALL RIVER. TWO HOMES WERE
COMPLETELY DESTROYED WHEN THEY FELL INTO THE RIVER DUE TO RIVERBANK
EROSION AND SEVERAL OTHER STRUCTURES WERE CONDEMNED DUE TO THE RIVER
UNDERCUTTING THEIR FOUNDATIONS. THE FAST FLOWING FLOOD WATERS
ALTERED THE PATH OF THE RIVERBED, DRAMATICALLY SO IN SOME LOCATIONS.

FALL BEGAN WITH MUCH ABOVE NORMAL PRECIPITATION FROM SEVERAL
ATMOSPHERIC RIVERS THAT IMPACTED THE REGION. MODERATE FLOODING
OCCURED ON JORDAN CREEK NEAR THE JUNEAU AIRPORT AND SITKA CAME CLOSE
TO RECORDING A NEW PRECIPITATION RECORD FOR THE MONTH. A VERY STRONG
AUTUMN STORM AFFECTED ALL OF SOUTHEAST ALASKA IN THE DAYS BEFORE
THANKSGVING. HIGH WINDS OCCURED ACROSS ALL OF SOUTHEAST ALAKSA WITH
SNOW OVER THE NORTHERN HALF OF THE PANHANDLE AND RAIN TO THE SOUTH.
THE COMBINATION OF WIND AND SNOW PRODUCED BLIZZARD CONDITIONS IN THE
JUNEAU AREA. THE STRONG WINDS AND HEAVY RAIN ALSO RESULTED IN
TRAGEDY WHEN A DEADLY LANDSLIDE STRUCK THE COMMUNITY OF WRANGELL IN
A SCENARIO ALL TOO SIMILAR TO THE FATAL LANDSLIDE THAT OCCURED IN
HAINES IN 2020.

BY THE BEGINNING OF THE WINTER AND THE END OF 2023, A STRONG EL NINO
HAD DEVELOPED AND THIS WAS REFLECTED IN MONTHLY AVERAGE TEMPERATURES
FROM 4 TO 6 DEGREES ABOVE NORMAL AT THE PRIMARY CLIMATE SITES. NOT
SURPRISINGLY, EVEN THOUGH PRECIPITATION WAS ONCE AGAIN ABOVE NORMAL,
SNOW TOTALS WERE BELOW NORMAL.

FRITSCH

$$