Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 021511
CLMBUF

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
338 PM EDT WED JUN 1 2016

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

...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF MAY 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2016

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            90   05/28                         89  05/09
LOWEST             38   05/16                         34  05/23
                        05/15
AVG. MAXIMUM     68.8              66.5     2.3     73.1
AVG. MINIMUM     49.0              47.4     1.6     52.2
MEAN             58.9              56.9     2.0     62.6
DAYS MAX >= 90      1               0.0     1.0        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           1.21              3.46   -2.25     3.50
DAYS >= .01         7                                  9
DAYS >= .10         3                                  4
DAYS >= .50         0                                  1
DAYS >= 1.00        0                                  1
GREATEST
 24 HR. TOTAL    0.41   05/13 TO 05/13           05/31 TO 05/31
                        05/12 TO 05/13                    05/31 TO 05/31
                        05/13 TO 05/13                    05/31 TO 05/31

SNOWFALL (INCHES)
RECORDS
 TOTAL            7.9   1989
TOTALS              T               0.3    -0.3      0.0
SINCE 7/1        55.1              94.7   -39.6
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        T   05/15 TO 05/15

DEGREE_DAYS
HEATING TOTAL     237               272     -35      158
 SINCE 7/1       5595              6553    -958     6978
COOLING TOTAL      59                23      36       91
 SINCE 1/1         59                26      33       91
..................................................

WIND (MPH)
AVERAGE WIND SPEED              8.8
HIGHEST WIND SPEED/DIRECTION    35/230
HIGHEST GUST SPEED/DIRECTION    47/230    DATE  05/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             22
NUMBER OF DAYS CLOUDY          6

AVERAGE RH (PERCENT)     62

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       2
LIGHT RAIN               10     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
HAZE                      3

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

&&

...CONTINUATION OF DRY WEATHER INTO MAY...

FREQUENT COOL PERIODS THE FIRST THREE WEEKS OF MAY YIELDED TO
ABUNDANT SUNSHINE THE LAST 10 DAYS OF THE MONTH. SUMMER`S WARMTH AND
HUMIDITY ALSO INCREASED THE FINAL 10 DAYS OF THE MONTH.
PRECIPITATION AGAIN WAS WELL BELOW NORMAL, AND MUCH OF THE
PRECIPITATION FELL THE FIRST HALF OF THE MONTH.

THE AIR TEMPERATURE AVERAGED 58.9F DEGREES THIS MONTH WHICH IS 2.0
DEGREES ABOVE NORMAL. THERE WERE 12 DAYS THAT AVERAGED BELOW NORMAL
IN MAY...WITH ALL DAYS FALLING WITHIN THE FIRST THREE WEEKS OF MAY.
BUFFALO REACHED ITS FIRST 80F DEGREE READING ON MAY 12TH...SIX DAYS
POST NORMAL. BUFFALO ALSO REACHED ITS FIRST 90F DEGREE READING ON
MAY 28TH...WHICH IS THE EARLIEST SUCH READING SINCE 1991. THIS 90F
DEGREE READING ALSO ESTABLISHED A NEW DAILY RECORD FOR MAY
28TH...BREAKING THE FORMER RECORD OF 86F SET BACK IN 2012. FOLLOWING
THIS FIRST 90F DEGREE READING OF THE YEAR...OVERNIGHT TEMPERATURE
ONLY DROPPED TO 69F...SETTING A NEW RECORD WARM MINIMUM TEMPERATURE
FOR MAY 29TH.

PRECIPITATION AVERAGED WELL BELOW NORMAL AT THE BUFFALO AIRPORT.
SPRING`S RAINS FELL LIGHTLY THROUGH THE FIRST HALF OF THE
MONTH...WITH THE BULK OF THE RAIN FALLING ON THREE DATES...THE 1ST-
2ND AND 13TH. WHEN COMBINED WITH APRIL...THE TWO MONTH TALLY OF 3.11
INCHES OF PRECIPITATION WAS THE 2ND LOWEST TOTAL SINCE RECORDS MOVED
TO THE AIRPORT IN THE SUMMER OF 1943. ON SUNDAY THE 15TH UNDER AN
UPPER LEVEL LOW LIGHT SNOW MIXED IN WITH THE RAIN...ENOUGH SNOW THAT
A LIGHT DUSTING COVERED THE GROUND. THIS WAS THE FIRST SNOW IN MAY
SINCE 2013.

THE OVERALL PATTERN THIS MONTH FEATURED A DEEP TROUGH ACROSS THE
EAST COAST...AND RIDGE OF HIGH PRESSURE OVER THE WEST COAST.
ANOMALOUS POSITIVE HEIGHTS IN THE MID LEVELS OVER GREENLAND FORCED
ANY AREAS OF LOW PRESSURE OVER THE EAST TO STALL...WHICH LINGERED
COOL DAYS...THAT WERE AT TIMES DAMP THE FIRST HALF OF MAY. THE FIRST
AREA OF LOW PRESSURE SPIRALED OVER THE NORTHEAST THE FIRST FEW DAYS
OF MAY...BRINGING LIGHT RAIN ACROSS WESTERN NEW YORK. A SECOND LOW
FORMED THE SECOND WEEK IN MAY...THIS CLOSER TO THE SOUTHERN MID
ATLANTIC REGION. THIS FEATURE WAS FAR ENOUGH AWAY TO LIMIT MUCH
PRECIPITATION FROM REACHING THE REGION...THOUGH COOL DAYS PREVAILED.
ON THE 14TH A COLD FRONT SWEPT ACROSS THE REGION WITH A FEW RAIN
SHOWERS. A MUCH COLDER AIRMASS BEHIND THE FRONT DROPPED ACROSS THE
EASTERN GREAT LAKES REGION ON THE 15TH...PRODUCING A FEW SHOWERS OF
BOTH RAIN AND SNOW. THIS COOL AIRMASS AND ASSOCIATED TROUGH OF LOW
PRESSURE ALOFT SLOWLY EXITED THE REGION THROUGH THE THIRD WEEK IN
MAY. FOLLOWING THIS...WARMTH THAT HAD BEEN BUILDING OVER THE WEST
BEGAN TO SHIFT EASTWARD. ABOVE NORMAL WARMTH FINALLY REACHED THE
EASTERN GREAT LAKES REGION BY THE END OF THE THIRD WEEK OF MAY. THIS
WARMTH CONTINUED TO BUILD UNTIL SATURDAY THE 28TH...A DAY THAT
FEATURED SEVERAL RECORD HIGH TEMPERATURES ACROSS THE REGION. SEVERAL
HEAVY SHOWERS AND THUNDERSTORMS FORMED ON BOTH THE 28TH AND
29TH...THOUGH MUCH OF THE ACTIVITY MISSED THE AIRPORT BOTH DAYS.

LAKE ERIE STARTED THE MONTH AT 43F DEGREES AND SLOWLY WARMED THROUGH
MID-MONTH. AS SUMMERS WARMTH REACHED THE EASTERN GREAT LAKES REGION
THE LAKE TEMPERATURE ROSE DRAMATICALLY THE LAST WEEK OF THE MONTH
SKYROCKETING FROM 51F TO 65F THE LAST 9 DAYS OF THE MONTH. WINDS
WERE GENERALLY LIGHT THIS MONTH WITH STRONGEST GUSTS OF 47 MPH
OCCURRING BEHIND A COLD FRONT PASSAGE ON THE 14TH.

IN ALL...AFTER A COOL START TO MAY...SUMMERS WARMTH REACHED THE
REGION IN TIME FOR THE MEMORIAL DAY HOLIDAY WEEKEND.

SPRING STATS...

THE METEOROLOGICAL MONTHS OF MARCH-APRIL-MAY STARTED MILD AND
RELATIVELY SNOW FREE. BY EARLY APRIL HOWEVER A RETURN TO LATE
WINTER`S CHILL OCCURRED...THIS ALSO ACCOMPANIED BY A FEW INSTANCES
OF SNOW. THE APRIL SNOW WAS MORE THAN THE TYPICAL SNOWY MONTHS OF
NOVEMBER...DECEMBER AND MARCH...AND WAS THE GREATEST APRIL SNOW
SINCE 2004. AFTER A COOL START TO MAY MUCH WARMER TEMPERATURES WERE
RECORDED OVER THE FINAL HALF OF THE MONTH.

PRECIPITATION WHICH STARTED AROUND NORMAL THROUGH MARCH WAS LACKING
THE FINAL TWO MONTHS OF SPRING. THIS LED TO THE GROUND BECOMING
DRY...AS SPRING`S VEGETATION QUICKLY USED WHAT WATER WAS STORED FROM
EARLY SPRING.

TEMPERATURE..............47.3F (+1.7)
PRECIPITATION............5.96" (-3.38)
SNOW.....................8.0" (-7.9)

&&

THOMAS

$$


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