Climatological Report (Seasonal)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1055 AM EST WED MAR 2 2016

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE WINTER SEASON, FROM
12/1/2015 TO 2/29/2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1940 TO 2016 /FOR TEMPERATURES/
CLIMATE RECORD PERIOD 1871 TO 2016 /FOR PRECIPITATION/
CLIMATE RECORD PERIOD 1882 TO 2016 /FOR SNOWFALL/

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              71   12/06/2001
                        12/07/1998
 LOW              -39   02/16/1943
HIGHEST            62   12/25        59       3       59  12/01
LOWEST            -10   02/15       -10       0      -11  02/24
                        02/14
AVG. MAXIMUM     40.1              34.3     5.8     31.8
AVG. MINIMUM     22.3              16.8     5.5     13.9
MEAN             31.2              25.6     5.6     22.8
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     22              37.0   -15.0       45
DAYS MIN <= 32     75              82.9    -7.9       81
DAYS MIN <= 0       4               7.6    -3.6       18

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        20.49   1935
 MINIMUM         4.12   1872
TOTALS          12.88             10.65    2.23    13.75
DAILY AVG.       0.14              0.12    0.02     0.15
DAYS >= .01        33              32.3     0.7       41
DAYS >= .10        25              19.5     5.5       26
DAYS >= .50        11               7.0     4.0        7
DAYS >= 1.00        2               2.7    -0.7        2
GREATEST
 24 HR. TOTAL    2.04   01/10

SNOWFALL (INCHES)
RECORDS
 TOTAL          107.6   1971
TOTALS           41.0              44.5    -3.5     78.9
SINCE 7/1        41.0              46.4    -5.4     89.2
SNOWDEPTH AVG.      2
DAYS >= TRACE      23              20.1     2.9       41
DAYS >= 1.0         9              11.5    -2.5       20
GREATEST
 SNOW DEPTH         8   01/19
 24 HR TOTAL      8.8   02/05

DEGREE_DAYS
HEATING TOTAL    3045              3550    -505     3743
 SINCE 7/1       4291              5078    -787     5054
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              7.4
HIGHEST WIND SPEED/DIRECTION    36/140    DATE  01/10
HIGHEST GUST SPEED/DIRECTION    49/160    DATE  01/10

SKY COVER
AVERAGE SKY COVER           0.60

AVERAGE RH (PERCENT)     70

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     HEAVY RAIN                 3
RAIN                      9     LIGHT RAIN                24
FREEZING RAIN             3     LT FREEZING RAIN           5
HEAVY SNOW                2     SNOW                       6
LIGHT SNOW               20     FOG                       40
FOG W/VIS <= 1/4 MILE    11     HAZE                      10

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

&&

WINTER 2015-16 WAS ONE OF THE WARMEST ON RECORD IN PORTLAND. DURING
THE LATE FALL OF 2015 A STAGNANT JET STREAM PATTERN KEPT COOL
TEMPERATURES IN THE WESTERN UNITED STATES AND WARM TEMPERATURES IN
THE EAST. THIS WARMTH CONTINUED TO BUILD THROUGH THE MONTH OF
DECEMBER, PEAKING WITH A HIGH TEMPERATURE OF 62 DEGREES ON CHRISTMAS
DAY. EVERY DAY WAS ABOVE NORMAL FROM DECEMBER 2 THROUGH 28 HELPING
TO MAKE DECEMBER 2015 NOT ONLY THE WARMEST DECEMBER ON RECORD BUT
ALSO THE WARMEST MONTH ON RECORD WHEN MEASURED AS A DEPARTURE FROM
NORMAL. COLDER AIR FINALLY ARRIVED AFTER CHRISTMAS ALONG WITH THE
FIRST SNOWFALL OF THE SEASON ON DECEMBER 29, THE SECOND LATEST START
TO THE SNOW SEASON ON RECORD. ALTHOUGH SOME COLDER WEATHER CONTINUED
INTO THE NEW YEAR, THE JANUARY THAW BROUGHT WARM TEMPERATURES AND
MORE THAN 2 INCHES OF RAIN ON JANUARY 10, WASHING AWAY THE SNOW
PACK. A SNOWSTORM ON JANUARY 12 SIGNALED ANOTHER SHIFT IN THE
WEATHER PATTERN WITH THE MOST PERSISTENT COLD WEATHER OF THE SEASON
COMING IN BEHIND IT. THERE WERE 11 STRAIGHT DAYS WHERE THE
TEMPERATURE DID NOT RISE ABOVE FREEZING. WARM WEATHER RETURNED BY
THE END OF JANUARY AND THE BEGINNING OF FEBRUARY WHEN 4 OUT OF 5
DAYS TOPPED 50 DEGREES FROM JANUARY 31 THROUGH FEBRUARY 4. THIS
CULMINATED IN THE BIGGEST SNOWSTORM OF THE SEASON WHEN 8.8 INCHES OF
SNOW FELL ON FEBRUARY 5 WITH PROGRESSIVELY COLDER AIR ARRIVING OVER
THE FOLLOWING WEEK. A BRUTALLY COLD ARCTIC AIR MASS MOVED INTO THE
AREA IN THE MIDDLE OF FEBRUARY WITH 4 STRAIGHT DAYS WITH SUBZERO
TEMPERATURES. BUT THIS COLD WEATHER DID NOT LAST. AFTER FALLING TO
10 BELOW ZERO ON FEBRUARY 15, SNOW CHANGED TO RAIN AND THE
TEMPERATURE WARMED ALL THE WAY TO 50 DEGREES THE NEXT DAY. WARM
WEATHER DOMINATED THE REST OF THE MONTH WITH THE INCONSISTENT WINTER
SNOW PACK DISAPPEARING AGAIN.

THE AVERAGE TEMPERATURE FOR THE WINTER WAS 31.2 DEGREES WHICH WAS
5.6 DEGREES ABOVE NORMAL. THE WARMEST DECEMBER, 8TH WARMEST JANUARY,
AND 9TH WARMEST FEBRUARY COMBINED TO MAKE THIS WINTER THE SECOND
WARMEST ON RECORD. THE WARMEST WINTER WAS 2001-02 WHEN THE AVERAGE
TEMPERATURE WAS 31.3 DEGREES. THE COLDEST WAS 1971 WITH AN AVERAGE
OF 17.9 DEGREES. THE FOLLOWING TABLE LISTS THE WARMEST WINTERS ON
RECORD AT PORTLAND.

WARMEST WINTER (DEC-FEB) AT PORTLAND (SINCE 1940)
RANK  TEMP  SEASON
1     31.3  2001-02
2     31.2  2015-16 <===
3     30.3  2011-12
4     29.3  1997-98
5     29.0  1990-91
6     28.9  1996-97
7     28.7  1952-53
8     28.5  2012-13
9     28.4  2009-10
10    28.0  2005-06

THERE WERE 21 DAYS THIS WINTER WHEN THE TEMPERATURE REACHED 50
DEGREES OR HIGHER. THIS WAS BY FAR THE MOST SUCH DAYS ON RECORD. THE
PREVIOUS RECORD WAS ONLY 14 DAYS SET IN 1949-50.

A TOTAL OF 12.88 INCHES OF PRECIPITATION FELL WHICH WAS 2.23 INCHES
ABOVE NORMAL, BUT THE DRIEST WINTER SINCE 2011-12. THE HEAVIEST
PRECIPITATION WAS ON JANUARY 9 AND 10 WHEN 2.11 INCHES WAS MEASURED.
THE WETTEST WINTER WAS 1934-35 WHEN 20.49 INCHES OF PRECIPITATION
WAS RECORDED. THE DRIEST WAS 1871-72 WITH ONLY 4.12 INCHES.

THERE WAS 41.0 INCHES OF SNOWFALL WHICH WAS 3.5 INCHES BELOW NORMAL
AND THE LEAST WINTER SNOWFALL SINCE 2011-12. THE HEAVIEST SNOWFALL
WAS ON FEBRUARY 5 WHEN 8.8 INCHES OF SNOW FELL. THE SNOWIEST WINTER
WAS 1970-71 WHEN 107.6 INCHES OF SNOW WAS MEASURED. THE LEAST SNOWY
WAS 1936-37 WHEN ONLY 9.5 INCHES WAS RECORDED.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN WINTER 2015-16...
DATE    RECORD                               PREVIOUS
DEC 12  46   - WARMEST AVERAGE TEMPERATURE   46 IN 1979 /TIED/
DEC 14  40   - WARMEST LOW TEMPERATURE       37 IN 2006, 2001, 1983, AND 1958
DEC 24  44   - WARMEST LOW TEMPERATURE       37 IN 2014, 1994, 1964
DEC 24  48   - WARMEST AVERAGE TEMPERATURE   43 IN 1957
DEC 25  62   - WARMEST HIGH TEMPERATURE      53 IN 2014 AND 1994
DEC 25  49   - WARMEST AVERAGE TEMPERATURE   46 IN 2014
JAN 10  52   - WARMEST HIGH TEMPERATURE      50 IN 2000
JAN 10  43   - WARMEST AVERAGE TEMPERATURE   40 IN 2002, 1956, AND 1946
FEB 2   48   - WARMEST HIGH TEMPERATURE      48 IN 1981, 1973, AND 1952 /TIED/
FEB 4   55   - WARMEST HIGH TEMPERATURE      50 IN 1991 AND 1960
FEB 4   38   - WARMEST LOW TEMPERATURE       37 IN 1984
FEB 4   47   - WARMEST AVERAGE TEMPERATURE   41 IN 2006
FEB 25  53   - WARMEST HIGH TEMPERATURE      51 IN 1985 AND 1984
FEB 25  44   - WARMEST AVERAGE TEMPERATURE   42 IN 1996 AND 1975
FEB 29  59   - WARMEST HIGH TEMPERATURE      45 IN 2004 AND 1972
FEB 29  42   - WARMEST AVERAGE TEMPERATURE   38 IN 2000

$$

KIMBLE


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