Climatological Report (Monthly)
Issued by NWS Portland, ME

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000
CXUS51 KGYX 021455
CLMPWM

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAY ME
1055 AM EDT THU MAY 2 2013

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

...THE PORTLAND ME CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1941 TO 2013 /FOR TEMPERATURES/
CLIMATE RECORD PERIOD 1871 TO 2013 /FOR PRECIPITATION/
CLIMATE RECORD PERIOD 1882 TO 2013 /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            65   04/19        75     -10       83  04/17
LOWEST             25   04/07        24       1       23  04/01
AVG. MAXIMUM     53.3              53.3     0.0     57.9
AVG. MINIMUM     35.0              34.7     0.3     36.0
MEAN             44.2              44.0     0.2     47.0
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.2    -0.2        0
DAYS MIN <= 32     11              10.4     0.6       10
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         9.90   1973
 MINIMUM         0.28   1999
TOTALS           2.11              4.32   -2.21     4.84
DAILY AVG.       0.07              0.14   -0.07     0.16
DAYS >= .01        11              11.2    -0.2        8
DAYS >= .10         5               7.0    -2.0        3
DAYS >= .50         1               2.9    -1.9        2
DAYS >= 1.00        0               1.0    -1.0        2
GREATEST
 24 HR. TOTAL    0.63   04/01 TO 04/01
                        03/31 TO 04/01
                        04/01 TO 04/01

SNOWFALL (INCHES)
RECORDS
 TOTAL           20.5   1906
TOTALS            0.2               2.8    -2.6        T
SINCE 7/1        98.0              61.9    36.1
SNOWDEPTH AVG.      0
DAYS >= TRACE       3               1.0     2.0
DAYS >= 1.0         0               0.6    -0.6
GREATEST
 SNOW DEPTH         T   04/13
 24 HR TOTAL      0.2   04/12 TO 04/12

DEGREE_DAYS
HEATING TOTAL     618               630     -12      536
 SINCE 7/1       6145              6648    -503     5530
COOLING TOTAL       0                 0       0        1
 SINCE 1/1          0                 0       0        1
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.2
HIGHEST WIND SPEED/DIRECTION    30/300    DATE  04/03
HIGHEST GUST SPEED/DIRECTION    39/280    DATE  04/03

SKY COVER
AVERAGE SKY COVER           0.40

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     HEAVY RAIN                 0
RAIN                      4     LIGHT RAIN                11
FREEZING RAIN             0     LT FREEZING RAIN           0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     FOG                       10
FOG W/VIS <= 1/4 MILE     0     HAZE                       2

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

&&

AFTER A VERY SNOWY WINTER PORTLAND ENJOYED A MUCH DRIER THAN NORMAL
APRIL WITH MILD TYPICAL SPRING TEMPERATURES.

THE AVERAGE TEMPERATURE WAS JUST 0.2 DEGREES ABOVE NORMAL. THE
AVERAGE OF 44.2 WAS THE 30TH WARMEST APRIL IN THE PAST 73 YEARS. THE
WARMEST APRIL ON RECORD IS 48.8 DEGREES SET IN 2010 AND THE COLDEST
IS 38.4 DEGREES SET IN 1943.

THE AVERAGE HIGH FOR THE MONTH WAS 53.3 DEGREES WHICH IS NORMAL FOR
APRIL AND TIED THREE OTHER YEARS AS THE 32ND WARMEST ON RECORD. THE
AVERAGE LOW FOR THE MONTH WAS 35.0 DEGREES WHICH WAS 0.3 DEGREES
ABOVE NORMAL AND TIED THREE OTHER YEARS AS THE 21ST WARMEST.

THERE WERE NO EXTREME TEMPERATURES IN APRIL WITH THE HIGH FOR THE
MONTH JUST 65 DEGREES (ON THE 19TH) AND THE LOW 25 DEGREES (ON THE
7TH). THE COLDEST HIGH WAS 39 DEGREES ON THE 2ND. ALL OTHER DAYS
REACHED 40 OR HIGHER...WITH EIGHT DAYS REACHING 60 OR WARMER AND
ANOTHER 13 DAYS CLIMBING INTO THE 50S.

THERE WERE FIVE DAYS WITH LOWS IN THE 20S AND A TOTAL OF 11 DAYS
WITH LOWS OF 32 OR COLDER. THERE WERE EIGHT DAYS WITH LOWS IN THE
40S INCLUDING THE WARMEST LOW OF 46 ON THE 19TH.

PORTLAND HAD JUST OVER TWO INCHES OF PRECIPITATION (RAINFALL PLUS
MELTED SNOWFALL) IN APRIL WHICH WAS LESS THAN HALF THE NORMAL
PRECIPITATION FOR THE MONTH. THE 2.11 INCHES WAS 2.21 INCHES BELOW
THE NORMAL OF 4.32 INCHES PRECIPITATION FOR THE MONTH OF APRIL.
THIS WAS THE 24TH DRIEST APRIL IN 143 YEARS. THE DRIEST APRIL WAS
0.28 INCHES IN 1999 AND THE WETTEST WAS 9.90 INCHES IN 1973.

THE MOST PRECIPITATION IN ANY ONE DAY WAS 0.63 INCHES ON THE FIRST
DAY OF THE MONTH. THIS WAS FOLLOWED BY A SEVEN DAY STRETCH WITH SIX
DRY DAYS OUT OF SEVEN WITH THE OTHER DAY RECEIVING JUST A TRACE.
FROM THE 9TH THROUGH THE 14TH PORTLAND SAW PRECIPITATION ON EACH OF
THESE SIX DAYS WITH A TOTAL OF 1.22 INCHES.

THIS WET PERIOD WAS FOLLOWED BY A PROLONGED DRY PERIOD WITH A TRACE
OR MORE OF PRECIPITATION ON JUST FIVE OF THE LAST 16 DAYS OF THE
MONTH. THESE 16 DAYS RECORDED A TOTAL OF JUST 0.26 INCHES OF RAIN.

PORTLAND HAD JUST 0.2 INCHES OF SNOW IN APRIL. THIS WAS 2.6 INCHES
BELOW NORMAL AND IS THE 91ST SNOWIEST APRIL IN THE PAST 132 YEARS.
THE SNOWIEST APRIL WAS 20.5 INCHES IN 1906 AND THE LEAST SNOWIEST
WAS ZERO INCHES OF SNOW IN TEN DIFFERENT YEARS...THE MOST RECENT IN
2009.

PORTLAND HAD JUST THREE DAYS WITH SNOW... 0.2 INCHES ON THE 12TH AND
A TRACE ON THE 6TH AND 13TH.

PORTLAND DID NOT SET OR TIE ANY DAILY RECORDS DURING APRIL OF 2013.

$$

SJC






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