Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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795 CXUS51 KBUF 040058 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 714 AM EDT SAT APR 1 2017 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF MARCH 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 86 03/29/1905 LOW -9 03/06/2014 HIGHEST 66 03/01 75 03/09 LOWEST 3 03/05 16 03/05 AVG. MAXIMUM 40.6 42.8 -2.2 49.9 AVG. MINIMUM 25.2 25.8 -0.6 30.4 MEAN 32.9 34.3 -1.4 40.1 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 8 5.5 2.5 4 DAYS MIN <= 32 19 23.2 -4.2 20 DAYS MIN <= 0 0 0.1 -0.1 0 PRECIPITATION (INCHES) RECORD MAXIMUM 7.02 1873 MINIMUM 0.47 1958 TOTALS 4.66 2.50 2.16 1.82 DAYS >= .01 16 16 DAYS >= .10 7 6 DAYS >= .50 4 0 DAYS >= 1.00 1 0 GREATEST 24 HR. TOTAL 1.22 03/31 TO 03/31 SNOWFALL (INCHES) RECORDS TOTAL 54.0 1900 TOTALS 33.0 16.3 16.7 3.2 SINCE 7/1 104.6 95.2 9.4 54.9 SNOWDEPTH AVG. 3 3 0 0 DAYS >= 1.0 5 4.0 1.0 1 GREATEST SNOW DEPTH 22 03/15 1 03/03 24 HR TOTAL 17.3 03/14 TO 03/15 DEGREE_DAYS HEATING TOTAL 988 952 36 762 SINCE 7/1 4856 5738 -882 4679 COOLING TOTAL 0 0 0 0 SINCE 1/1 0 0 0 0 ....................................................... WIND (MPH) AVERAGE WIND SPEED 11.2 HIGHEST WIND SPEED/DIRECTION 60/260 HIGHEST GUST SPEED/DIRECTION 81/250 DATE 03/08 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.80 NUMBER OF DAYS FAIR 3 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 21 AVERAGE RH (PERCENT) 66 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 0 HEAVY RAIN 2 RAIN 5 LIGHT RAIN 12 FREEZING RAIN 0 LT FREEZING RAIN 0 HAIL 0 HEAVY SNOW 2 SNOW 3 LIGHT SNOW 15 SLEET 1 FOG 13 FOG W/VIS <= 1/4 MILE 1 HAZE 6 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...CHILLY MARCH FOLLOWING MILD WINTER... AFTER A MILD WINTER ACROSS THE GREAT LAKES, ARCTIC AIR POURED OVER THE REGION, PRODUCING A MARCH THAT FINISHED LESS THAN A DEGREE WARMER THAN THE AVERAGE OF THE 2016-17 METEOROLOGICAL WINTER MONTHS OF DECEMBER, JANUARY AND FEBRUARY. MARCH, COLDER THAN FEBRUARY FOR JUST THE 9TH TIME IN RECORDED HISTORY, WAS ALSO THE FIRST BELOW NORMAL TEMPERATURE MONTH SINCE APRIL 2016. THERE WERE THREE NOTABLE WEATHER EVENTS THIS MONTH. THE FIRST WAS A HIGH WIND EVENT THAT BROUGHT A CONSIDERABLE AMOUNT OF DAMAGE ACROSS WESTERN NEW YORK. THE NEXT TWO WERE PRECIPITATION EVENTS, A NOR`EASTER THAT DROPPED OVER TWO-FEET OF SNOW MID-MONTH, AND FINALLY A LONG DURATION RAIN EVENT WITH OVER AN INCH OF RAIN TO CLOSE OUT MARCH. THE AVERAGE TEMPERATURE IN MARCH WAS 32.9F DEGREES, WHICH IS 1.4F DEGREES BELOW NORMAL. THERE WERE 17 DAYS BELOW NORMAL IN MARCH, WITH THE BULK OF THESE DAYS CENTERED MID-MONTH. THREE DAYS THIS MONTH REACHED INTO THE 60S, WHICH IS NORMAL. THE 66F READING ON THE 1ST WAS THE WARMEST DAY THIS MONTH, AND ALSO SET A DAILY RECORD, BREAKING THE FORMER RECORD OF 62F/1954. THERE WERE TWO BRIEF WARM SPELLS THIS MONTH, THE FIRST FROM THE 6TH TO THE 8TH AND THE SECOND FROM THE 24TH TO 28TH. PRECIPITATION FOR THE MONTH TOTALED 4.66 INCHES, WHICH WAS THE 12TH WETTEST MARCH ON RECORD. SNOWFALL TOTALED 33.0 INCHES WHICH IS TIED FOR THE 10TH SNOWIEST MARCH ON RECORD. THERE WERE 16 DAYS THAT HAD MEASURABLE PRECIPITATION THIS MONTH...ABOUT AVERAGE. HOWEVER OF THESE 16 DAYS, 6 HAD AT LEAST A QUARTER OF AN INCH OF PRECIPITATION WHICH IS JUST TWO DAYS LESS THAN THE RECORD OF 8 FOR MARCH. A NEW DAILY SNOWFALL RECORD WAS ESTABLISHED ON THE 14TH WHEN 16.2 INCHES OF SNOW WAS MEASURED. THERE WAS ALSO TWO NEW PRECIPITATION RECORDS SET, THE FIRST ON THE 14TH AT 0.96 AND A SECOND ON THE 31ST AT 1.22 INCHES OF PRECIPITATION. MARCH CAME IN LIKE A LION, AS A STORM SYSTEM CUT BY WESTERN NEW YORK TO THE NORTHWEST. THIS SYSTEM BROUGHT WIND GUSTS OVER 60 MPH TO THE GENESEE VALLEY. WARM AIR AHEAD OF THE SURFACE LOW ALSO BROUGHT TEMPERATURES INTO THE MID 60S ACROSS THE ROCHESTER METRO AREA TO START THE MONTH. HOWEVER THIS WARMTH FLEETED QUICKLY, WITH TEMPERATURES ON THE 4TH REMAINING IN THE TEENS FOR HIGHS, AND DIPPING TO 3F DEGREES ON THE MORNING OF THE 5TH, THE COLDEST MORNING OF THE MONTH. AFTER A RETURN TO MILD TEMPERATURES THE 6TH THROUGH 8TH, A SEVERE WIND EVENT OCCURRED ACROSS WESTERN NEW YORK ON WEDNESDAY THE 8TH. THIS WIND EVENT WAS NOT A CLASSIC EVENT AS THE SURFACE LOW REMAINED FAR AWAY FROM THE EASTERN GREAT LAKES REGION. RATHER A VERY STRONG LOW LEVEL JET FLOWED ACROSS THE REGION, WITH SUNSHINE INCREASING THE MIXING LAYER, SUCH THAT THESE STRONG WINDS ALOFT WERE TRANSPORTED TO THE SURFACE. SEVERE DAMAGE OCCURRED ACROSS WESTERN NEW YORK, INCLUDING THE GENESEE VALLEY WITH NUMEROUS TREES DOWN, AND OBJECTS TOSSED ABOUT. A PEAK WIND GUST OF 81 MPH AT THE ROCHESTER AIRPORT WAS THE SECOND GREATEST WIND GUST EVER RECORDED. THE FOLLOWING TUESDAY AND WEDNESDAY, THE 14TH AND 15TH, A NOR`EASTER DEVELOPED, DROPPING WIDESPREAD SNOW ACROSS THE REGION. THOUGH THE INITIAL ROUND OF SNOW WAS MANAGEABLE, THE CONSTANT FLOW OF MOISTURE ACROSS LAKE ONTARIO, AND FALLING TEMPERATURES BROUGHT CONTINUAL LAKE ENHANCED SNOW, SUCH THAT BY THE TIME ALL WAS SAID AND DONE ON THE 15TH, 26.5 INCHES OF SNOW WAS MEASURED AT THE ROCHESTER AIRPORT. THE SNOWDEPTH DECREASED RAPIDLY, THANKS TO A STRONG MARCH SUN ANGLE AND DAYTIME TEMPERATURES RISING ABOVE FREEZING. THIS SNOW ABLATED JUST A WEEK LATER, BEFORE SEVERAL RAIN EVENTS IMPACTED WESTERN NEW YORK. THIS FIRST EVENT BROUGHT NEARLY AN INCH OF RAINFALL TO WESTERN NEW YORK ON THE 24TH AND 25TH. A SECOND EVENT, WITH GREATER RAINFALL, REACHED THE REGION AT THE END OF THE MONTH WITH ONE TO ONE AND A HALF INCHES OF RAIN FALLING ACROSS WESTERN NEW YORK. IN ALL, AN ACTIVE AND COOL MONTH. && THOMAS $$

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