Climatological Report (Monthly)
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CXUS51 KCAR 111453
CLMMLT


CLIMATE REPORT
NATIONAL WEATHER SERVICE CARIBOU, ME
951 AM EST FRI JAN 11 2019

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

...THE MILLINOCKET ME CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1903 TO 2019

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              62   12/11/1907
 LOW              -35   12/31/1917
HIGHEST            53   12/22        MM      MM       50  12/06
                        12/21
LOWEST            -10   12/13        MM      MM      -10  12/28
AVG. MAXIMUM     29.3              30.3    -1.0     23.9
AVG. MINIMUM     11.1              14.4    -3.3      9.3
MEAN             20.2              22.4    -2.2     16.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     22              17.2     4.8       19
DAYS MIN <= 32     31              29.9     1.1       30
DAYS MIN <= 0       5               3.1     1.9        7

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.94   2003
 MINIMUM         1.91   2001
TOTALS           3.21                     -0.32
DAILY AVG.       0.10              0.11   -0.01     0.09
DAYS >= .01         8                MM      MM       10
DAYS >= .10         5                MM      MM        7
DAYS >= .50         2                MM      MM        2
DAYS >= 1.00        1                MM      MM        0

SNOWFALL (INCHES)
RECORDS
 TOTAL             MM   MM
TOTALS             MM                MM      MM       MM
SINCE 7/1          MM                MM      MM       MM
SNOWDEPTH AVG.     MM                MM      MM       MM
DAYS >= 1.0         0                MM      MM        0
GREATEST
 SNOW DEPTH        MM                                 MM  MM
 24 HR TOTAL       MM                                 MM

DEGREE_DAYS
HEATING TOTAL    1379              1322      57     1494
 SINCE 7/1       3361              3165     196     3031
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        458               268     190      263
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              5.3
HIGHEST WIND SPEED/DIRECTION    29/300    DATE  12/23
HIGHEST GUST SPEED/DIRECTION    42/300    DATE  12/23

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           15
NUMBER OF DAYS PC              5
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
  0
  2
  1
  0
  3
  0
  7
HAZE                     15

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.
---------------------------------------------------------------------
...NORTHERN AND EASTERN MAINE MONTHLY CLIMATE NARRATIVE...

DECEMBER 2018 ACROSS NORTHERN AND EASTERN MAINE WILL BE
REMEMBERED FOR VERY COLD WEATHER DURING THE FIRST 2 WEEKS OF THE
MONTH, A SIGNIFICANT WARM-UP MID MONTH, AND COLD WEATHER AT THE
END OF THE MONTH. ASIDE FROM A SIGNIFICANT SOLSTICE RAIN STORM,
THE MONTH WAS NOT ALL THAT STORMY WITH ONLY ONE SIGNIFICANT SNOW
STORM ON THE 17TH THAT PRODUCED WIDESPREAD AMOUNTS OF 4 TO 8
INCHES WITH LOCAL AMOUNTS OVER 12 INCHES IN PARTS OF NORTHERN
WASHINGTON COUNTY AND CENTRAL PENOBSCOT COUNTY.

TEMPERATURES FOR THE MONTH AS A WHOLE AVERAGED FROM 1 TO 3 DEGREES
BELOW AVERAGE, BUT THE FIRST TWO WEEKS OF THE MONTH WERE VERY COLD
WITH TEMPERATURE DEPARTURES OF 6 TO 9 DEGREES BELOW THE 30-YEAR
AVERAGE (1981-2010).

THE MOST NOTEWORTHY EVENT OF THE MONTH WAS THE SOLSTICE SOAKER
THAT PRODUCED FROM 1.5 TO 3 INCHES OF RAIN WITH LOCAL AMOUNTS OVER
3 INCHES IN PARTS OF HANCOCK AND WASHINGTON COUNTIES. THIS ONE
RAIN EVENT CAUSED THE MONTHLY PRECIPITATION TOTALS TO RANGE FROM
75 TO 130 PERCENT OF NORMAL. THE DRIEST AREAS WHERE GENERALLY
ACROSS SOUTHERN AROOSTOOK AND NORTHERN PENOBSCOT COUNTIES WITH
THE GREATEST DEPARTURES FROM NORMAL IN CENTRAL AND SOUTHERN
PISCATAQUIS COUNTY WHERE A FEW SPOTS EXCEEDED 150 PERCENT OF THE
NORMAL PRECIPITATION.

THE SOLSTICE SOAKER WAS ACCOMPANIED BY NEAR RECORD TO RECORD HIGH
TEMPERATURES IN MANY AREAS ON THE 21ST INTO THE 22ND WITH HIGHS
AS WARM AS 50 DEGREES AS FAR NORTH AS CARIBOU ON THE 22ND. THE
COMBINATION OF THE HEAVY RAIN AND MILD TEMPERATURES CAUSED
SIGNIFICANT SNOWMELT. MORE THAN 50 PERCENT OF THE SNOWPACK WAS
LOST FROM THE KATAHDIN REGION NORTH TO THE SAINT JOHN VALLEY, AND
ALL OF THE SNOWPACK MELTED ACROSS THE DOWN EAST REGION. THIS
CAUSED SIGNIFICANT RISES ON AREA RIVERS AND CAUSED MUCH OF THE ICE
TO BREAK UP. ICE JAMS FORMED ON PARTS OF THE AROOSTOOK AND SAINT
JOHN RIVERS AND CAUSED SOME MINOR FLOODING ON A FEW ROADS, BUT NO
STRUCTURES WERE FLOODED.

THE SNOWMOBILE SEASON WHICH GOT OFF TO AN EARLY START SUFFERED A
MAJOR HIT WITH THE SOLSTICE SOAKER WITH MANY TRAILS IN THE NORTH
CLOSED, AND MANY FIELDS WITH BARE SPOTS. CONDITIONS IMPROVED SOME
BY LATE MONTH WITH 3 TO 5 INCHES OF SNOW AND COLDER WEATHER THAT
ALLOWED FOR TRAIL GROOMING.

IN MOST AREAS THE GREATEST SNOW DEPTH WAS OBSERVED AROUND MID
MONTH WITH 1 1/2 TO 2 FEET OF SNOW IN FAR NORTHERN AREAS AND 4 TO
10 INCHES DOWN EAST. BY THE END OF THE MONTH, THE SNOW DEPTH
RANGED FROM 6 INCHES TO A FOOT ACROSS THE FAR NORTH WITH 2 INCHES
OR LESS DOWN EAST.

THE CLIMATE PREDICTION CENTER`S OUTLOOK FOR NORTHERN AND EASTERN
MAINE FOR THE MONTH OF JANUARY IS CALLING FOR SLIGHTLY INCREASED
PROBABILITY OF BELOW AVERAGE TEMPERATURES AND NO STRONG SIGNALS
THAT WOULD POINT TOWARD AN UNUSUALLY WET (SNOWY) OR DRY MONTH.

$$

CB/VJN



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