Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 051758 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1135 AM EDT SUN MAY 1 2016 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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 93 04/28/1990 04/30/1970 LOW 11 04/04/1879 HIGHEST 77 04/21 84 04/13 LOWEST 14 04/05 27 04/25 04/01 AVG. MAXIMUM 52.6 56.0 -3.4 58.0 AVG. MINIMUM 32.0 36.6 -4.6 37.3 MEAN 42.3 46.3 -4.0 47.6 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 3 0.2 2.8 0 DAYS MIN <= 32 16 9.5 6.5 6 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 5.81 2011 MINIMUM 0.94 1884 TOTALS 1.56 2.73 -1.17 2.70 DAYS >= .01 13 13 DAYS >= .10 7 6 DAYS >= .50 1 2 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.65 04/25 TO 04/26 04/20 TO 04/20 SNOWFALL (INCHES) RECORDS TOTAL 23.8 1901 TOTALS 8.8 3.9 4.9 0.5 SINCE 7/1 63.7 99.1 -35.4 101.9 SNOWDEPTH AVG. 0 MM MM 0 DAYS >= 1.0 2 1.2 0.8 0 GREATEST SNOW DEPTH 5 04/04 0 MM 24 HR TOTAL 5.0 04/03 TO 04/03 04/23 TO 04/23 DEGREE_DAYS HEATING TOTAL 674 565 109 514 SINCE 7/1 5353 6303 -950 6686 COOLING TOTAL 0 4 -4 0 SINCE 1/1 0 4 -4 0 .................................................... WIND (MPH) AVERAGE WIND SPEED 9.0 HIGHEST WIND SPEED/DIRECTION 36/250 HIGHEST GUST SPEED/DIRECTION 53/250 DATE 04/01 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.60 NUMBER OF DAYS FAIR 7 NUMBER OF DAYS PC 9 NUMBER OF DAYS CLOUDY 14 AVERAGE RH (PERCENT) 58 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 1 HEAVY RAIN 0 RAIN 3 LIGHT RAIN 13 FREEZING RAIN 0 LT FREEZING RAIN 1 HAIL 0 HEAVY SNOW 1 SNOW 3 LIGHT SNOW 8 SLEET 0 FOG 10 FOG W/VIS <= 1/4 MILE 1 HAZE 4 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...SNOWY START TO APRIL...WITH COOL TEMPERATURES... AFTER A MILD...AND BELOW NORMAL SNOWFALL WINTER...APRIL TURNED THE TABLES WITH BELOW NORMAL TEMPERATURES AND ABOVE NORMAL SNOWFALL. THE SNOW ALL FELL WITHIN THE FIRST HALF OF THE MONTH...AND A BRIEF WARM SPELL TO START THE SECOND HALF OF THE MONTH ALLOWED FOR SPRING`S FLOWERS TO BLOOM FORTH. THE AVERAGE TEMPERATURE FOR APRIL WAS 42.3F WHICH IS 4 DEGREES BELOW NORMAL. THERE WAS ONE RECORD SET THIS MONTH...AS THE 14 DEGREES ON THE 5TH BROKE THE FORMER RECORD OF 15 DEGREES SET BACK IN 1879. THE WARMEST DAY WAS 77 DEGREES ON THE 21ST...DURING A ONE WEEK STRETCH OF PLEASANT SPRING TEMPERATURES. PRECIPITATION WAS BELOW NORMAL...WITH 1.56 INCHES RECORDED AND THIS TOTAL FALLS JUST OVER AN INCH BELOW NORMAL. SNOWFALL HOWEVER WAS ABOVE NORMAL WITH 8.8 INCHES MEASURED...WITH ALL SNOW MEASURED WITHIN THE FIRST 10 DAYS OF THE MONTH. THIS TOTAL WAS MORE THAN THE TYPICAL SNOWY MONTHS OF NOVEMBER...DECEMBER AND MARCH...AND WAS THE GREATEST APRIL SNOW SINCE 1995. THERE WERE 6 DAYS THAT RECORDED SNOWFALL...DOUBLE THE NORMAL AMOUNT OF DAYS. A SERIES OF CLIPPER STORM SYSTEMS WITHIN A LONG WAVE TROUGH OVER THE EASTERN UNITED STATES MAINTAINED UNSEASONABLY COOL AIR...WITH PERIODIC SNOWS OVER THE FIRST 2 WEEKS OF THE MONTH. IT WAS THE COLDEST FIRST 10 DAYS TO APRIL SINCE 2003 FOR WESTERN NEW YORK. AFTER GRAUPEL AND WET SNOW FELL OVER PORTIONS OF WESTERN NEW YORK ON THE 12TH...A BROAD RIDGE OF HIGH PRESSURE USHERED IN SPRING WITH STEADILY WARMING TEMPERATURES AND MULTIPLE DAYS OF SUNSHINE THROUGH THE MIDDLE PORTION OF THE MONTH. THIS ALLOWED FOR SPRINGS FLOWERS TO BLOOM FORTH. THE WEATHER PATTERN FLIPPED AGAIN FOR THE FINAL WEEK OF APRIL WITH BELOW NORMAL TEMPERATURES AND DAMP DAYS TO CLOSE OUT THE MONTH. IN ALL A COOL APRIL...WITH SNOW TO START...AND DAMPNESS TO CLOSE. && THOMAS $$

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