Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000
CXUS51 KBUF 060049
CLMBUF

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
607 PM EDT MON JUN 1 2015

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

...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF MAY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              94   05/22/1911
 LOW               25   05/04/1926
HIGHEST            89   05/09                         85  05/13
LOWEST             34   05/23                         37  05/05
AVG. MAXIMUM     73.1              66.5     6.6     66.7
AVG. MINIMUM     52.2              47.4     4.8     48.6
MEAN             62.6              56.9     5.7     57.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.2    -0.2        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.09   2011
 MINIMUM         0.53   1877
TOTALS           3.50              3.46    0.04     3.12
DAYS >= .01         9                                 14
DAYS >= .10         4                                  8
DAYS >= .50         1                                  2
DAYS >= 1.00        1                                  0
GREATEST
 24 HR. TOTAL    2.44   05/31 TO 05/31

SNOWFALL (INCHES)
RECORDS
 TOTAL            7.9   1989
TOTALS            0.0               0.3    -0.3      0.0
SINCE 7/1       112.9              94.7    18.2
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   05/31 TO 05/31

DEGREE_DAYS
HEATING TOTAL     158               272    -114      242
 SINCE 7/1       6978              6553     425     7097
COOLING TOTAL      91                23      68       23
 SINCE 1/1         91                26      65       23
..................................................

WIND (MPH)
AVERAGE WIND SPEED              10.0
HIGHEST WIND SPEED/DIRECTION    31/280    DATE  05/27
HIGHEST GUST SPEED/DIRECTION    41/280    DATE  05/27

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          7

AVERAGE RH (PERCENT)     64

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       4
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      1
HAZE                      6

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

&&

...VERY WARM AND DRY MAY...

AFTER A COLD START TO SPRING...AND NEAR NORMAL TEMPERATURES IN
APRIL...VERY WARM AIR TEMPERATURES RETURNED TO WESTERN NEW YORK IN
MAY. IT WAS ALSO A DRY MONTH WITH MEANINGFUL RAINFALL FALLING ON TWO
OCCASIONS THROUGH THE MONTH.

ABUNDANT SUNNY DAYS...A DRYING GROUND AND A MEAN SOUTHWESTERLY FLOW
LED TO THE 5TH WARMEST MAY ON RECORD. THE MEAN TEMPERATURES THIS
MONTH WAS 62.6F DEGREES WHICH IS 5.7F DEGREES ABOVE NORMAL. THERE
WERE TWO RECORD HIGH TEMPERATURES SET THIS MONTH...FALLING
CONSECUTIVELY ON THE 8TH AND 9TH WITH READINGS OF 88F AND 89F
RESPECTIVELY. THERE WERE ALSO TWO RECORD WARM MINIMUM
TEMPERATURES...ALSO FALLING CONSECUTIVELY ON THE 10TH AND 11TH WITH
READINGS OF 67F AND 64F DEGREES RESPECTIVELY. THE 5 CONSECUTIVE DAYS
WITHIN THE 80S FROM THE 7TH THROUGH THE 11TH WAS THE EARLIEST
STRETCH OF 5 DAYS WITHIN THE 80S FOR BUFFALO.

PRECIPITATION THIS MONTH TOTALED 3.50 INCHES WHICH IS A SHADE ABOVE
NORMAL. THOUGH MAY`S PRECIPITATION FINISHED NEAR NORMAL...ALMOST THE
ENTIRE MONTH WAS DRY AS MOST OF THE RAIN THIS MONTH FELL OVER TWO
OCCASIONS THE 10-11TH (0.59") AND THE LAST 26 HOURS OF THE MONTH
(2.67"). THE 2.44 INCHES OF RAIN THAT FELL ON THE LAST DAY OF THE
MONTH SET A NEW RECORD FOR THE DATE. THE OLD RECORD WAS 1.30 INCHES
SET BACK IN 1889. THIS DAILY EVENT WAS ALSO THE SECOND GREATEST
CALENDAR RAINFALL EVENT IN THE MONTH OF MAY...TRAILING ONLY THE 3.41
INCHES THAT FELL MAY 19TH 1986.

MANY OF MAY`S DAILY TEMPERATURES WERE ABOVE NORMAL WITH 23 DAYS
AVERAGING ABOVE NORMAL COMPARED TO 8 DAYS AT OR BELOW NORMAL. THESE
WARM TEMPERATURES IN CONJUNCTION WITH ALL THE SUNSHINE AND LACK OF
RAIN MADE THIS MONTH A VERY PLEASANT MONTH. THERE WERE TWO NOTABLE
WEATHER FEATURES THIS MONTH. THE FIRST WAS A LATE FROST/FREEZE
ACROSS WESTERN NEW YORK ON THE MORNING OF THE 23RD. FOLLOWING A COOL
AND CLOUDY DAY IN THE LOW 60S...SKIES CLEARED WITH EXCELLENT
RADIATIONAL COOLING CONDITIONS. TEMPERATURES DROPPED TO 34F DEGREES
SATURDAY MORNING THE 23RD WITH WIDESPREAD FROST ACROSS METRO BUFFALO
AND FREEZE CONDITIONS TO AREAS WELL SOUTH OF BUFFALO. ONLY 5 OTHER
SPRINGS HAVE HAD A TEMPERATURE OF 34F OR COLDER LATER IN THE SEASON.

VEGETATION SPRUNG FORTH IN THE WARM MONTH OF MAY...BUT PROLONGED DRY
STRETCHES AND SUNNY DAYS EVENTUALLY STARTED TO DRY THE LOW BRUSH AND
GRASSES. THIS DRY PATTERN ENDED ON THE LAST DAY OF THE MONTH WHEN A
MOISTURE LADEN SLOW MOVING COLD FRONT MOVED THROUGH THE REGION WITH
SIGNIFICANT RAINFALL. SEVERAL WAVES ALONG THIS COLD FRONT BROUGHT
OVER TWO INCHES OF RAINFALL THE LAST DAY AND A HALF TO WESTERN NEW
YORK...A RAINFALL EVENT THAT WAS WELCOMED EVEN THOUGH THE RAIN FELL
ON A WEEKEND. THIS EVENT PRODUCED NO SIGNIFICANT FLOODING AS
ANTECEDENT DRY CONDITIONS ALLOWED THE GROUND TO ABSORB A PORTION OF
THE RAIN THAT FELL...WITH REMAINING RUNOFF CONTAINED WITHIN ALL
CREEKS AND RIVERS.

WINDS WERE PREDOMINATELY SOUTHWEST THIS MONTH AND TAME WITH THE
STRONGEST GUST JUST 41 MPH. LAKE ERIE`S WATER TEMPERATURE ROSE FROM
39F AT MONTHS START TO 60F BY THE END OF THE MONTH.

IN ALL A PLEASANT SPRING MONTH FOR WESTERN NEW YORK.

SPRING STATS...

SPRING STARTED COOL...WITH AIR TEMPERATURES IN MARCH WELL BELOW
NORMAL. AFTER A NEAR NORMAL MONTH IN APRIL TEMPERATURE-WISE THE
MONTH OF MAY BROUGHT SUMMER LIKE WARMTH ACROSS WESTERN NEW YORK. IT
WAS A DRY SPRING...WITH THE MONTH OF MARCH THE DRIEST OF THE THREE
MONTHS. THE TOTAL PRECIPITATION THIS SPRING WAS CONTRARY TO THE
PRIOR TWO SPRINGS...WHICH FINISHED WITH ABOVE NORMAL PRECIPITATION.
HERE ARE SOME SPRING STATS FOR METEOROLOGICAL SPRING WHICH IS
DEFINED AS THE MONTHS OF MARCH...APRIL AND MAY.

TEMPERATURE.......... 45.9F (+0.3)
PRECIPITATION........ 7.64" (-1.70")
SNOW................. 9.9" (-6.0")

&&

THOMAS

$$



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