Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 040516 CLMBUF CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 142 PM EDT THU JUN 1 2017 ................................... ...THE BUFFALO NY CLIMATE SUMMARY FOR THE MONTH OF MAY 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 05/22/1911 LOW 25 05/04/1926 HIGHEST 83 05/18 90 05/28 LOWEST 34 05/09 38 05/16 05/08 05/15 AVG. MAXIMUM 63.9 66.5 -2.6 68.8 AVG. MINIMUM 48.3 47.4 0.9 49.0 MEAN 56.1 56.9 -0.8 58.9 DAYS MAX >= 90 0 0.0 0.0 1 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 6.35 3.46 2.89 1.21 DAYS >= .01 14 7 DAYS >= .10 10 3 DAYS >= .50 3 0 DAYS >= 1.00 3 0 GREATEST 24 HR. TOTAL 1.79 05/25 TO 05/25 SNOWFALL (INCHES) RECORDS TOTAL 7.9 1989 TOTALS 0.0 0.3 -0.3 T SINCE 7/1 76.1 94.7 -18.6 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 0.0 DEGREE_DAYS HEATING TOTAL 286 272 14 237 SINCE 7/1 5594 6553 -959 5595 COOLING TOTAL 21 23 -2 59 SINCE 1/1 27 26 1 59 .................................................... WIND (MPH) AVERAGE WIND SPEED 10.4 HIGHEST WIND SPEED/DIRECTION 33/240 DATE 05/02 HIGHEST GUST SPEED/DIRECTION 51/230 DATE 05/01 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM NUMBER OF DAYS FAIR 1 NUMBER OF DAYS PC 12 NUMBER OF DAYS CLOUDY 18 AVERAGE RH (PERCENT) 68 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 5 MIXED PRECIP 0 HEAVY RAIN 6 RAIN 7 LIGHT RAIN 18 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 1 HEAVY SNOW 0 SNOW 0 LIGHT SNOW 0 SLEET 0 FOG 11 FOG W/VIS <= 1/4 MILE 2 HAZE 1 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...VERY WET MAY FOR WESTERN NEW YORK... A WET SPRING CONTINUED THROUGH THE MONTH OF MAY AS SLOW MOVING STORM SYSTEMS, AND HEAVY DOWNPOURS FROM THUNDERSTORMS CONTINUED TO SATURATE WESTERN NEW YORK. COMBINED WITH MARCH AND APRIL, THE THREE SPRING MONTHS FINISHED SECOND WETTEST ON RECORD, TRAILING ONLY THE SPRING OF 2011. THE AVERAGE AIR TEMPERATURE FOR MAY WAS 56.1F WHICH IS 0.8F DEGREES BELOW NORMAL. THIS IS THE SECOND BELOW NORMAL TEMPERATURE MONTH OF THE SPRING. MUCH OF THE FIRST HALF OF THE MONTH REMAINED BELOW NORMAL, WITH THE COOLEST DAYS THIS MONTH ON THE 8TH AND 9TH WHEN THE MERCURY DIPPED TO 34F. DAYS TRENDED ABOVE NORMAL FOR THE END OF THE MONTH, INCLUDING 4 STRAIGHT DAYS IN THE 70S TO FINISH THE MEMORIAL DAY WEEKEND AND MONTH. THERE WAS ONE RECORD HIGH MINIMUM RECORD SET, ON THE 17TH THE THERMOMETER DIPPED ONLY TO 64F, TYING THE RECORD PREVIOUSLY SET BACK IN 1889. PRECIPITATION FOR THE MONTH FINISHED AT 6.35 INCHES, WHICH IS ALMOST THREE INCHES ABOVE NORMAL. THERE WERE THREE DAILY RECORD PRECIPITATION EVENTS, THIS ON THE HEALS OF THREE DAILY RECORD PRECIPITATION EVENTS IN APRIL. THERE WERE 5 DAYS WITH THUNDERSTORMS, WITH EACH EVENT CONTRIBUTING TO THE 7TH WETTEST MAY ON RECORD. DESPITE THE WET MONTH, THE NUMBER OF DAYS WITH PRECIPITATION (14) WERE JUST ONE MORE THAN NORMAL (13). NEW PRECIPITATION MARKS WERE ESTABLISHED ON THE 1ST (1.29"), 4TH (1.37") AND 25TH (1.79"). THE BEGINNING OF THE MONTH BEGAN ON THE STORMY SIDE, WITH NUMEROUS SEVERE THUNDERSTORMS BRINGING LOCALIZED DAMAGING WIND GUSTS ACROSS WESTERN NEW YORK. IN ADDITION HEAVY RAIN PASSED ACROSS THE REGION WITH OVER AN INCH OF RAIN MEASURED AT THE BUFFALO AIRPORT. THIS RECORDED SETTING EVENT FOLLOWED A DAILY RECORD THAT WAS SET ON THE LAST DAY OF APRIL. AFTER A FEW DAYS OF COOL WEATHER AND RESPITE FROM THE RAIN, ANOTHER STORM SYSTEM CUT THROUGH THE OHIO VALLEY AND PRODUCED ADDITIONAL WIDESPREAD SOAKING RAIN. THIS EVENT PRODUCED YET ANOTHER DAILY RECORD AT BUFFALO. COOL WEATHER AND CLOUDY DAYS CONTINUED THROUGH MID-MONTH AS A DEEP UPPER LEVEL LOW REMAINED STALLED OVER QUEBEC. THE SPRING OF 2017 WAS A STARK CONTRAST TO THE PREVIOUS SPRING OF 2016 WHICH FEATURED THE ONSET OF DROUGHT CONDITIONS. LAWNS THIS YEAR REMAINED LUSH AND FLOWERS FLOURISHED UNDER THE COOL AND DAMP CONDITIONS. THE FIRST TASTE OF SUMMER THIS MONTH OCCURRED ON THE 17TH AND 18TH OF THE MONTH. WARM AIR FROM THE SOUTHWEST FLOWED OVER THE EASTERN GREAT LAKES REGION AND BROUGHT WIDESPREAD 80S, AND A FEW 90F READINGS. ANOTHER COOL POOL SETTLED OVER WESTERN NEW YORK LATER ON THE 18TH. AS THESE AIRMASSES CLASHED, SEVERE THUNDERSTORMS AGAIN FORMED, WITH SOME BEARING HAIL TO 2 INCHES IN DIAMETER ACROSS SOUTHWESTERN NEW YORK. ANOTHER SLOW MOVING LOW FROM THE SOUTH PASSED NEAR THE REGION ON THE 25TH, BRINGING AN ALL-DAY RAIN EVENT THAT YIELDED AN INCH TO TWO INCHES OF RAIN TO WESTERN NEW YORK. THIS EVENT ALSO BROUGHT A DAILY RECORD OF 1.79 INCHES OF RAIN TO THE BUFFALO AIRPORT. A WEAK COLD FRONT BROUGHT SOME SHOWERS LATER SUNDAY AND INTO THE EARLY MORNING HOURS OF MEMORIAL DAY, THE 29TH. MUCH OF THE RAIN ENDED BY TIME FESTIVITIES BEGAN ON MONDAY. LAKE ERIE`S WATER TEMPERATURE REMAINED ABOVE NORMAL AND WARMED FROM 46F DEGREES AT THE BEGINNING OF THE MONTH TO 58F DEGREES BY MONTHS CLOSE. WINDS FOR THE MONTH FINISHED ABOVE NORMAL (+0.4 MPH), FINISHING WITH AN AVERAGE SPEED OF 10.4 MPH. THE PEAK WIND GUSTS FOR THE MONTH OCCURRED IN STORMS ON THE 1ST WITH 51 MPH REGISTERED. IN ALL, AND WHAT HAS BEEN THE THEME THIS SPRING, A WET MONTH LACKING ANY SIGNIFICANT LENGTHY WARM SPELLS. && THOMAS $$

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