Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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CXUS51 KBUF 060109
CLMBUF

CLIMATE REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
822 AM EDT TUE MAY 2 2017

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

...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1871 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              94   04/28/1990
 LOW                5   04/01/1923
HIGHEST            85   04/27                         74  04/17
LOWEST             31   04/08                         17  04/05
AVG. MAXIMUM     60.3              55.0     5.3     52.3
AVG. MINIMUM     40.8              36.8     4.0     33.9
MEAN             50.5              45.9     4.6     43.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.5    -0.5        2
DAYS MIN <= 32      2               8.5    -6.5       12
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.38   2017
 MINIMUM         0.59   1915
TOTALS           6.38              3.01    3.37     1.90
DAYS >= .01        13                                 11
DAYS >= .10         8                                  7
DAYS >= .50         3                                  0
DAYS >= 1.00        3                                  0
GREATEST
 24 HR. TOTAL    1.95   04/20 TO 04/20

SNOWFALL (INCHES)
RECORDS
 TOTAL           15.7   1885
TOTALS            2.3               2.7    -0.4      7.1
SINCE 7/1        76.1              94.4   -18.3
SNOWDEPTH AVG.      0                MM      MM    999999
DAYS >= 1.0         1               0.8     0.2        3
GREATEST
 SNOW DEPTH         1   04/08                          2  04/05
                        04/07                             04/04
 24 HR TOTAL      2.3   04/06 TO 04/07

DEGREE_DAYS
HEATING TOTAL     432               576    -144      648
 SINCE 7/1       5308              6281    -973     5358
COOLING TOTAL       6                 3       3        0
 SINCE 1/1          6                 3       3        0
.....................................................

WIND (MPH)
AVERAGE WIND SPEED              10.7
HIGHEST WIND SPEED/DIRECTION    40/260
HIGHEST GUST SPEED/DIRECTION    53/260    DATE  04/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
NUMBER OF DAYS FAIR            3
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         16

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       6
LIGHT RAIN               15     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                2     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                      1

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

&&

...MILD, SOGGY APRIL...

ABOVE NORMAL TEMPERATURES RETURNED FOR APRIL, WHILE FEATURING A VERY
WET MONTH WITH THREE DAILY RECORDING BREAKING PRECIPITATION EVENTS.
DESPITE THE WET MONTH, TEMPERATURES FINISHED WITHIN A DEGREE OF THE
WARMEST APRIL ON RECORD. THE MARCH-APRIL PRECIPITATION OF 10.74
INCHES WAS THE SECOND WETTEST IN HISTORY, TRAILING ONLY MARCH-APRIL
OF 1991 WHICH TOTALED 11.80 INCHES OF PRECIPITATION.

THE AVERAGE TEMPERATURE FOR APRIL FINISHED AT 50.5F, WHICH IS THE
6TH WARMEST APRIL ON RECORD, AND 0.8 DEGREES FROM THE WARMEST APRIL
ON RECORD (51.3F/1921). THE WARMEST DAY THIS MONTH WAS THE 27TH,
WHEN A NEW RECORD HIGH FOR THE DATE WAS SET AT 85F. THIS BROKE THE
FORMER RECORD OF 84F SET BACK IN 1984. THIS 85F READING WAS ALSO THE
9TH WARMEST DAY IN BUFFALO`S HISTORY OF RECORD KEEPING. THERE WERE 5
DAYS ABOVE 70F THIS MONTH, ONE MORE THAN THE AIRPORT NORMAL. THERE
WERE ONLY 2 DAYS THAT REACHED THE FREEZING MARK THIS APRIL, WITH
ONLY THE YEARS 2010 AND 1878 FEWER WHICH FEATURED NO DAYS DIPPING TO
THE FREEZING MARK.

PRECIPITATION FOR THE MONTH FINISHED AT 6.38 INCHES, WHICH IS THE
WETTEST APRIL ON RECORD, AND MORE THAN DOUBLE THE NORMAL AMOUNT OF
PRECIPITATION. THE FORMER WETTEST APRIL OCCURRED IN 1961 WITH 5.90
INCHES OF PRECIPITATION RECORDED. CONTRIBUTING TO THIS WET APRIL
WERE THREE EXTREME PRECIPITATION EVENTS. THE FIRST, A COMBINATION OF
RAIN AND SNOW, WAS ON THE 6TH AND ESTABLISHED A NEW DAILY
PRECIPITATION RECORD OF 1.58 INCHES. THE SECOND, ON THE 20TH,
FEATURED MULTIPLE THUNDERSTORMS THAT ESTABLISHED NOT ONLY A NEW
DAILY RECORD OF 1.95 INCHES, BUT ALSO ESTABLISHED THE GREATEST
CALENDAR PRECIPITATION EVENT FOR THE MONTH. THE THIRD EVENT HAPPENED
ON THE LAST DAY OF THE MONTH WHEN MORNING THUNDERSTORMS, COMBINED
WITH ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS IN THE EVENING
BROUGHT 1.07 INCHES OF RAIN AND PUSHED THE AIRPORT TO THE WETTEST
APRIL ON RECORD. THERE WAS ONE SNOW EVENT ON THE 6TH AND 7TH WITH
2.3 INCHES OF SNOW FALLING. ALTHOUGH APRIL WAS THE WETTEST MONTH ON
RECORD, THE 13 DAYS OF MEASURABLE PRECIPITATION WAS 1 DAY LESS THAN
NORMAL.

THE SYNOPTIC PATTERN AS A WHOLE THIS MONTH FEATURED A PROGRESSIVE
FLOW, WITH ANOMALOUS WARM TEMPERATURES AND INCREASED HEIGHTS ALOFT
ACROSS THE NORTHEAST. WHILE THERE WAS ONE AMPLIFIED PERIOD THAT
TAPPED INTO MUCH COLDER AIR, WITH ACCUMULATING SNOW ON THE 6TH AND
7TH, MUCH OF THE MONTH FEATURED STORM SYSTEMS TRACKING ACROSS THE
OHIO VALLEY, BRINGING PERIODS OF RAIN AND THUNDERSTORMS ACROSS
WESTERN NEW YORK. THERE WERE NO PERSISTENT DRY STRETCHES THIS MONTH,
WITH JUST THREE DAYS THE GREATEST STRETCH WITHOUT A TRACE OF
PRECIPITATION. STORMS THAT BROUGHT ABUNDANT PRECIPITATION TO WESTERN
NEW YORK OCCURRED ON THE 3RD-4TH, 6TH-7TH, 19TH-20TH AND 30TH OF THE
MONTH. THESE STORM SYSTEM BROUGHT SOME RIVER AND CREEK FLOODING TO
THE GENESEE VALLEY ON THE 7TH AND 8TH, WHILE AFTER THE DAILY
RECORDING BREAKING EVENT OF THE 20TH SEVERAL CREEKS AND STREAMS
THROUGHOUT ALL OF WESTERN NEW YORK WENT INTO MINOR FLOOD STAGE. THE
DRIEST WEEK THIS MONTH WAS THE WEEK LEADING UP TO EASTERN SUNDAY THE
16TH, WITH GENERALLY LESS THAN A QUARTER OF AN INCH OF PRECIPITATION
FALLING ACROSS WESTERN NEW YORK. THERE WERE FOUR THUNDERSTORMS THIS
MONTH WHICH IS DOUBLE THE NORM.

SOUTHWEST WINDS AHEAD OF A COLD FRONT BROUGHT THE STRONGEST WIND
GUSTS THIS MONTH, WITH 53 MPH REGISTERED AT THE BUFFALO AIRPORT
DURING THE AFTERNOON OF EASTER SUNDAY, THE 16TH. OVERALL WINDS WERE
NORMAL THIS MONTH, FINISHING JUST A TICK BELOW THE AVERAGE OF 10.8
MPH. LAKE ERIE WARMED QUICKLY HAVING JUST A LITTLE SHORE ICE TO
MELT. TEMPERATURES ON THE LAKE ROSE FROM 36F AT MONTHS START TO 48F
DEGREES AT MONTHS END.

IN ALL ANOTHER VERY WET SPRING MONTH, BUT WITH MILD TEMPERATURES.

&&

THOMAS

$$



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