Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 040048 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 547 PM EDT FRI MAY 1 2015 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF APRIL 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 93 04/28/1990 04/30/1970 LOW 11 04/04/1879 HIGHEST 84 04/13 82 04/14 04/13 LOWEST 27 04/25 24 04/16 04/01 AVG. MAXIMUM 58.0 56.0 2.0 56.8 AVG. MINIMUM 37.3 36.6 0.7 35.4 MEAN 47.6 46.3 1.3 46.1 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 0 0.2 -0.2 0 DAYS MIN <= 32 6 9.5 -3.5 11 DAYS MIN <= 0 0 0.0 0.0 0 PRECIPITATION (INCHES) RECORD MAXIMUM 5.81 2011 MINIMUM 0.94 1884 TOTALS 2.70 2.73 -0.03 3.85 DAYS >= .01 13 15 DAYS >= .10 6 10 DAYS >= .50 2 3 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.90 04/20 TO 04/20 SNOWFALL (INCHES) RECORDS TOTAL 23.8 1901 TOTALS 0.5 3.9 -3.4 0.3 SINCE 7/1 101.9 99.1 2.8 112.7 SNOWDEPTH AVG. 0 MM MM 0 DAYS >= 1.0 0 1.2 -1.2 0 GREATEST SNOW DEPTH 0 MM 4 04/01 24 HR TOTAL 0.4 04/23 TO 04/23 DEGREE_DAYS HEATING TOTAL 514 565 -51 562 SINCE 7/1 6686 6303 383 6795 COOLING TOTAL 0 4 -4 1 SINCE 1/1 0 4 -4 1 ......................................................... WIND (MPH) AVERAGE WIND SPEED 10.5 HIGHEST WIND SPEED/DIRECTION 40/260 HIGHEST GUST SPEED/DIRECTION 57/250 DATE 04/10 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.70 NUMBER OF DAYS FAIR 4 NUMBER OF DAYS PC 11 NUMBER OF DAYS CLOUDY 15 AVERAGE RH (PERCENT) 62 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 3 MIXED PRECIP 0 HEAVY RAIN 4 RAIN 7 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 0 SNOW 1 LIGHT SNOW 5 SLEET 0 FOG 13 FOG W/VIS <= 1/4 MILE 0 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...COMFORTABLE APRIL... COMFORTABLE DAYS RETURNED TO WESTERN NEW YORK IN APRIL FOLLOWING ANOTHER HARSH WINTER AND SLOW START TO SPRING. THE MONTH HAD THREE WEATHER REGIMES...WITH EACH LASTING ABOUT 10 DAYS. THE FIRST 10 DAYS IN APRIL SAW DAILY SWINGS IN TEMPERATURES AS WINTER`S COLD AND LATE SEASON SNOW BATTLED WITH THE STRONGER APRIL SUN ANGLE AND WARMTH OF SPRING. THE MIDDLE OF THE MONTH WAS PLEASANT WITH ABOVE NORMAL WARMTH AND A FEW APRIL SHOWERS. THE END OF THE MONTH FINISHED ON THE COOL SIDE WITH SCATTERED LIGHT SHOWERS AND SPRINKLES. THE AVERAGE TEMPERATURE THIS MONTH WAS 47.6F DEGREES...WHICH IS OVER A DEGREE ABOVE NORMAL...AND FIRST ABOVE NORMAL MONTH SINCE LAST DECEMBER. THE FIRST 80 DEGREE READING OF THE YEAR OCCURRED ON THE 13TH WITH A READING OF 84F DEGREES...WHICH IS ABOUT TWO AND A HALF WEEKS EARLIER THAN NORMAL. THERE WERE NO RECORDS ESTABLISHED THIS MONTH. PRECIPITATION FOR THE MONTH SUMMED TO 2.70 INCHES WHICH IS JUST SHY OF NORMAL. ALONG A WARM FRONT NEARLY AN INCH OF PRECIPITATION FELL ACROSS THE GENESEE VALLEY ON MONDAY APRIL 20TH. THERE WAS A NORMAL AMOUNT OF DAYS (13 DAYS) WITH PRECIPITATION THIS MONTH. THERE WAS MEASURABLE SNOWFALL ON THE 24TH-25TH WHICH TALLIED HALF AN INCH. A WARM FRONT LIFTED ACROSS NEW YORK STATE ON THE 2ND AND BROUGHT THE FIRST TASTE OF SPRING TO THE REGION. GUSTY SOUTHERLY WINDS BROUGHT TEMPERATURES INTO THE UPPER 60S AND LOWER 70S ACROSS WESTERN NEW YORK. FOLLOWING A COLD FRONT PASSAGE ON THE 3RD...A MINOR SNOW ACCUMULATION OCCURRED ACROSS THE REGION ON SATURDAY APRIL 4TH. THE PATTERN FOR THE NEXT WEEK FEATURED EARLY SPRING TEMPERATURE FLUCTUATIONS THAT CUMULATED WITH A STRONG COLD FRONT ON THE 10TH THAT BROUGHT STRONG...DAMAGING WIND GUSTS ACROSS WESTERN NEW YORK. FOR MID MONTH A DOMINATING RIDGE OF HIGH PRESSURE REACHED WESTERN NEW YORK FOR THE MIDDLE PORTION OF THE MONTH. THERE WERE SUN-FILLED DAYS THAT ALLOWED THE GRASS TO GREEN AND EARLY SPRING FLOWERS TO APPEAR. RAIN SHOWERS WERE LIGHT AND TENDED TO FALL DURING THE LATER EVENING AND OVERNIGHT HOURS. THE LAST THIRD OF THE MONTH WAS DOMINATED BY A SLOW MOVING CUT OFF LOW THAT BROUGHT UNSEASONABLY COOL TEMPERATURES AND CLOUDY DAYS TO WESTERN NEW YORK. THIS SYSTEM BROUGHT SEVERAL INCHES OF SNOW TO THE HILLS OF SOUTHWESTERN NEW YORK STATE ON THURSDAY THE 23RD...AND EVEN A FEW TENTHS OF AN INCH OF SNOW ACROSS THE GENESEE VALLEY. THIS SNOW FALLING THROUGH THE EARLY MORNING HOURS SNARLED THE MORNING COMMUTE. LATE APRIL`S WARMTH RETURNED FOR THE FINAL FEW DAYS OF THE MONTH. IN ALL A TYPICAL APRIL THAT WAS WELL WELCOMED FOLLOWING THREE MONTHS OF WELL BELOW NORMAL TEMPERATURES. && THOMAS $$

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