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000
CXUS51 KLWX 040004
CLMBWI

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
802 PM EDT FRI MAY 3 2013

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

...THE BALTIMORE MD CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1870 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              94   04/25/1960
                        04/23/1960
                        04/20/1941
 LOW               20   04/04/1965
HIGHEST            91   04/10        85       6
LOWEST             25   04/04        29      -4
AVG. MAXIMUM     66.2              64.6     1.6     67.2
AVG. MINIMUM     44.5              42.7     1.8     43.3
MEAN             55.3              53.7     1.6
DAYS MAX >= 90      1               0.2     0.8
DAYS MAX <= 32      0               0.0     0.0
DAYS MIN <= 32      3               2.8     0.2
DAYS MIN <= 0       0               0.0     0.0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.70   1889
 MINIMUM         0.39   1985
TOTALS           2.20              3.19   -0.99     1.99
DAILY AVG.       0.07              0.11   -0.04
DAYS >= .01         8              10.8    -2.8
DAYS >= .10         5               6.3    -1.3
DAYS >= .50         2               2.4    -0.4
DAYS >= 1.00        0               0.6    -0.6
GREATEST
 24 HR. TOTAL    0.86   04/19 TO 04/20

SNOWFALL (INCHES)
RECORDS
 TOTAL            9.4   1924
TOTALS              T                 T     0.0
SINCE 7/1         8.0              20.1   -12.1
SNOWDEPTH AVG.      0
DAYS >= TRACE       1               0.1     0.9
DAYS >= 1.0         0               0.0     0.0
GREATEST
 SNOW DEPTH         0
 24 HR TOTAL        T

DEGREE_DAYS
HEATING TOTAL     309               354     -45      305
 SINCE 7/1       4350              4615    -265     3559
COOLING TOTAL      26                13      13       22
 SINCE 1/1         26                14      12       32
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              7.2
HIGHEST WIND SPEED/DIRECTION    28/280    DATE  04/01
HIGHEST GUST SPEED/DIRECTION    40/310    DATE  04/24

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             16
NUMBER OF DAYS CLOUDY          9

AVERAGE RH (PERCENT)     61

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              2     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN               13     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      1
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      6

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

&&

AFTER TWO STRAIGHT MONTHS OF BELOW NORMAL TEMPERATURES...THE MONTHLY
AVERAGE TEMPERATURE FOR APRIL WAS ABOVE THE 1981-2010 NORMAL. THE
PAST SIX YEARS HAVE FEATURED ABOVE NORMAL TEMPERATURES IN APRIL.
HOWEVER...THE MONTH ENDED ON A COOL NOTE AS 10 OF THE LAST 11 DAYS
RECORDED BELOW NORMAL AVERAGE TEMPERATURES.

A PERIOD OF WINTER-LIKE COLD OCCURRED DURING THE 2ND-4TH WHEN THE
LOW TEMPERATURE WAS IN THE 20S EACH DAY. IT WAS ONLY THE FIFTH YEAR
ON RECORD THAT HAD THREE OR MORE CONSECUTIVE DAYS WITH A LOW
TEMPERATURE BELOW 30 DEGREES IN APRIL AND THE FIRST SUCH OCCURRENCE
SINCE 5-8 APRIL 1982.

THE LOW TEMPERATURE OF 27 DEGREES ON THE 3RD TIED THE DAILY RECORD
LOW FOR BALTIMORE THAT WAS PREVIOUSLY SET IN 1965 AND 1985.

WHILE THE LOW TEMPERATURE OF 25 DEGREES ON THE 4TH DID NOT BREAK A
DAILY RECORD LOW...IT WAS THE LOWEST TEMPERATURE DURING APRIL IN 21
YEARS (25 DEGREES ON 4 APRIL 1992).

THE HIGH TEMPERATURE OF 91 DEGREES ON THE 10TH SET A DAILY RECORD
HIGH FOR BALTIMORE. IT BROKE THE OLD RECORD OF 89 SET IN 1922.

PRECIPITATION FOR THE MONTH WAS BELOW NORMAL. IT WAS THE FIRST APRIL
SINCE 2006 WITHOUT AT LEAST ONE INCH OF RAINFALL ON ANY CALENDAR DAY
DURING APRIL.

A TRACE OF SLEET WAS REPORTED ON THE EVENING OF THE 4TH BEFORE
PRECIPITATION QUICKLY CHANGED OVER TO RAIN.

$$
JRK/SMZ