Climatological Report (Monthly)
Issued by NWS Portland, ME

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CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
613 PM EDT THU MAY 5 2016

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF APRIL 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 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              92   04/28/2009
 LOW                8   04/04/1954
HIGHEST            68   04/22        75      -7       70  04/14
                        04/21
LOWEST             17   04/06        24      -7       23  04/05
                        04/04                             04/02
AVG. MAXIMUM     53.4              53.3     0.1     54.9
AVG. MINIMUM     32.0              34.7    -2.7     34.4
MEAN             42.7              44.0    -1.3     44.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               0.2     0.8        0
DAYS MIN <= 32     16              10.4     5.6       12
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.90   1973
 MINIMUM         0.28   1999
TOTALS           1.56              4.32   -2.76     5.03
DAILY AVG.       0.05              0.14   -0.09     0.17
DAYS >= .01        12              11.2     0.8       10
DAYS >= .10         4               7.0    -3.0        7
DAYS >= .50         0               2.9    -2.9        2
DAYS >= 1.00        0               1.0    -1.0        2
GREATEST
 24 HR. TOTAL    0.48   04/07

SNOWFALL (INCHES)
RECORDS
 TOTAL           20.5   1906
TOTALS            3.7               2.8     0.9      2.9
SINCE 7/1        51.8              61.9   -10.1     94.5
SNOWDEPTH AVG.      0
DAYS >= TRACE       4               1.0     3.0
DAYS >= 1.0         2               0.6     1.4
GREATEST
 SNOW DEPTH         1   04/27
                        04/05
 24 HR TOTAL      2.2   04/26

DEGREE_DAYS
HEATING TOTAL     665               630      35      602
 SINCE 7/1       5792              6648    -856     6726
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.4
HIGHEST WIND SPEED/DIRECTION    37/310    DATE  04/03
HIGHEST GUST SPEED/DIRECTION    49/280    DATE  04/03

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     56

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 0
RAIN                      2     LIGHT RAIN                10
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                1     SNOW                       1
LIGHT SNOW                4     FOG                       10
FOG W/VIS <= 1/4 MILE     2     HAZE                       2

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

&&

AFTER A FEW WARM DAYS TO START THE MONTH, THE WEATHER TOOK A TURN
TOWARD MUCH COLDER TEMPERATURES. LIGHT SNOW FELL ON THE 3RD, 4TH,
AND 6TH. FOR THREE STRAIGHT DAYS THE TEMPERATURE DROPPED INTO THE
TEENS, THE MOST DAYS SUCH DAYS IN APRIL SINCE 1964. THE TEMPERATURE
BOTTOMED OUT AT 17 DEGREES ON THE 4TH AND 6TH. THIS WAS THE COLDEST
TEMPERATURE OBSERVED IN APRIL SINCE 1995. DAYTIME TEMPERATURES THEN
BEGAN TO WARM UP BACK TOWARD NORMAL LEVELS WHILE A PERSISTENTLY DRY
AIR MASS ALLOWED NIGHTTIME TEMPERATURES TO REMAIN NEAR OR BELOW
NORMAL. AFTER A COUPLE OF WARM DAYS WHERE THE TEMPERATURE ROSE INTO
THE UPPER 60S, COLD WEATHER AGAIN RETURNED FOR THE LAST WEEK OF THE
MONTH. A RARE LATE APRIL SNOWSTORM BROUGHT MORE THAN 2 INCHES OF
SNOWFALL ON APRIL 26. THIS WAS THE LATEST SNOWSTORM OBSERVED AT
PORTLAND SINCE 1993.

THE AVERAGE TEMPERATURE WAS 42.7 DEGREES WHICH WAS 1.3 DEGREES BELOW
NORMAL AND THE COLDEST APRIL SINCE 2007. THIS BREAKS THE STREAK OF 8
CONSECUTIVE MONTHS OF ABOVE NORMAL TEMPERATURES AT PORTLAND. WHILE
DAYTIME HIGH TEMPERATURES WERE NEAR NORMAL IN APRIL, IT WAS THE COLD
NIGHTTIME LOW TEMPERATURES THAT DROVE THE AVERAGE TEMPERATURE BELOW
NORMAL. THIS IS TYPICAL OF THE DRY AIR MASSES THAT PERSISTENTLY
DOMINATED THE WEATHER PATTERN IN APRIL. THE COLDEST APRIL WAS IN
1943 WHEN THE AVERAGE TEMPERATURE WAS ONLY 38.4 DEGREES. THE WARMEST
WAS IN 2010 WITH AN AVERAGE OF 48.8 DEGREES.

ON APRIL 1ST THE LOW TEMPERATURE WAS ONLY 51 DEGREES. THIS WAS THE
3RD WARMEST LOW TEMPERATURE OBSERVED IN THE MONTH OF APRIL AND THE
EARLIEST DATE WITH A LOW TEMPERATURE OF 50 OR MORE. ON APRIL 4TH THE
HIGH TEMPERATURE ONLY REACHED 25 DEGREES. THIS WAS THE THIRD COLDEST
HIGH TEMPERATURE OBSERVED IN THE MONTH OF APRIL. THE FOLLOWING
TABLES LIST THE WARMEST DAILY LOW TEMPERATURES AND COLDEST DAILY
HIGH TEMPERATURES IN APRIL.

WARMEST DAILY LOW TEMPERATURES IN APRIL (SINCE 1940)...
RANK  TEMP  DATE
1      54   APRIL 28, 2011
2      52   APRIL 30, 1942
3      51   APRIL 1, 2016 <===
       51   APRIL 29, 2003
       51   APRIL 29, 1974

COLDEST DAILY HIGH TEMPERATURES IN APRIL (SINCE 1940)...
RANK  TEMP  DATE
1      23   APRIL 7, 1982
2      24   APRIL 5, 1995
3      25   APRIL 4, 2016 <===
4      27   APRIL 6, 1982
5      28   APRIL 5, 2003

A TOTAL OF 1.56 INCHES OF PRECIPITATION FELL WHICH WAS 2.76 INCHES
BELOW NORMAL AND THE DRIEST APRIL SINCE 2010. THERE WERE NO VERY
HEAVY RAINFALL PERIODS THIS MONTH, WITH THE HEAVIEST PRECIPITATION
FALLING ON THE 7TH WHEN 0.48 INCHES WAS MEASURED. THE DRIEST APRIL
WAS 1999 WHEN ONLY 0.28 INCHES OF PRECIPITATION WAS RECORDED. THE
WETTEST WAS 1973 WITH 9.90 INCHES.

THERE WAS 3.7 INCHES OF SNOWFALL IN APRIL WHICH WAS 0.9 INCHES ABOVE
NORMAL. THE MOST SNOWFALL FELL ON APRIL 26 WHEN 2.2 INCHES WAS
MEASURED. THIS WAS ALSO THE LATEST SNOWFALL RECORDED AT PORTLAND
SINCE 1993. APRIL SNOWFALL IS TYPICALLY HIT OR MISS. THE SNOWIEST
APRIL WAS 1906 WHEN 20.5 INCHES FELL. BUT THERE HAVE BEEN 10 TIMES
THAT NO SNOW WAS OBSERVED IN APRIL, MOST RECENTLY IN 2009. THERE
HAVE BEEN AN ADDITIONAL 29 TIMES WHICH ONLY RECORDED A TRACE OF
SNOWFALL IN APRIL, MOST RECENTLY IN 2012. THE FOLLOWING TABLE LISTS
ALL OF THE RECORDED SNOWSTORMS AT PORTLAND ON APRIL 26 OR LATER.

ALL SNOWSTORMS APRIL 26 OR LATER (SINCE 1882)...
RANK  SNOW  DATE
1      7.0  MAY 10-11, 1945 (LATEST SNOWFALL)
2      3.3  APR 28-29, 1987
3      2.2  APR 26, 2016 <===
4      2.0  MAY 8-10, 1966
5      1.9  APR 26, 1887
6      1.5  APR 28, 1958
       1.5  APR 26-27, 1885
8      0.5  APR 26, 1890
9      0.4  APR 27, 1993 (MOST RECENT)
10     0.1  MAY 7, 1967
       0.1  APR 27, 1933

AS OF THE END OF APRIL, THE SEASON TOTAL SNOWFALL STANDS AT 51.8
INCHES WHICH IS 10.1 INCHES BELOW NORMAL AND THE LEAST SNOW SINCE
THE 2011-12 SEASON. THE FIRST SNOWFALL OF THE SEASON WAS THE SECOND
LATEST ON RECORD WHEN 7.3 INCHES FELL ON DECEMBER 29-30. THE
HEAVIEST SNOWFALL WAS ON FEBRUARY 5 WHEN 8.8 INCHES WAS MEASURED.
THE LAST SNOWFALL WAS ON APRIL 26 WHEN 2.2 INCHES FELL, THE LATEST
SNOWFALL IN MORE THAN 20 YEARS. THE SNOWIEST SEASON ON RECORD WAS
1970-71 WHEN 14.5 INCHES FELL. THE LEAST SNOWY WAS 1979-80 WITH ONLY
27.5 INCHES.

THE FOLLOWING DAILY RECORDS WERE SET OR TIED IN APRIL 2016...
DATE RECORD                              PREVIOUS
1    51 - WARMEST LOW TEMPERATURE        45 IN 1945
1    58 - WARMEST AVERAGE TEMPERATURE    57 IN 1945
4    25 - COLDEST HIGH TEMPERATURE       31 IN 1954
26   2.2 - GREATEST SNOWFALL             1.9 IN 1887

$$

KIMBLE



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