Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 011922 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 757 AM EST WED FEB 1 2017 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 74 01/25/1950 LOW -17 01/16/1994 HIGHEST 56 01/12 58 01/31 LOWEST 7 01/08 5 01/24 01/07 01/06 AVG. MAXIMUM 37.3 31.7 5.6 35.1 AVG. MINIMUM 25.5 17.6 7.9 19.6 MEAN 31.4 24.7 6.7 27.4 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 10 15.9 -5.9 12 DAYS MIN <= 32 21 27.5 -6.5 28 DAYS MIN <= 0 0 2.6 -2.6 0 PRECIPITATION (INCHES) RECORD MAXIMUM 8.05 1878 MINIMUM 0.52 1921 TOTALS 2.75 2.41 0.34 1.52 DAYS >= .01 16 18 DAYS >= .10 6 6 DAYS >= .50 3 0 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.83 01/17 TO 01/18 SNOWFALL (INCHES) RECORDS TOTAL 61.3 2004 TOTALS 11.8 28.2 -16.4 20.2 SINCE 7/1 57.0 57.4 -0.4 23.7 SNOWDEPTH AVG. 0 4 -4 1 DAYS >= 1.0 4 8.8 -4.8 7 GREATEST SNOW DEPTH 5 01/25 5 01/23 01/22 01/21 24 HR TOTAL 4.8 01/24 TO 01/24 DEGREE_DAYS HEATING TOTAL 1036 1251 -215 1159 SINCE 7/1 3049 3704 -655 2898 COOLING TOTAL 0 0 0 0 SINCE 1/1 0 0 0 0 ......................................................... WIND (MPH) AVERAGE WIND SPEED 10.1 HIGHEST WIND SPEED/DIRECTION 41/260 HIGHEST GUST SPEED/DIRECTION 58/260 DATE 01/11 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.80 NUMBER OF DAYS FAIR 2 NUMBER OF DAYS PC 7 NUMBER OF DAYS CLOUDY 22 AVERAGE RH (PERCENT) 75 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 1 MIXED PRECIP 1 HEAVY RAIN 1 RAIN 4 LIGHT RAIN 16 FREEZING RAIN 0 LT FREEZING RAIN 2 HAIL 0 HEAVY SNOW 1 SNOW 5 LIGHT SNOW 16 SLEET 2 FOG 24 FOG W/VIS <= 1/4 MILE 2 HAZE 2 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...MILD JANUARY WITH FEW INTERRUPTIONS... JANUARY 2017 WILL BE REMEMBERED FOR ITS COMPLACENCY AS ONLY BRIEF PERIODS OF TRUE WINTER WEATHER OCCURRED. OVERALL TEMPERATURES WERE WELL ABOVE NORMAL, AND SNOWFALL WAS LACKING. A PERSISTENT WARM AND MOIST AIRMASS MID-MONTH BROUGHT SEVERAL DAYS OF FOG AND LOW CLOUDS. THE AVERAGE TEMPERATURE OF 31.4F WAS OVER SIX AND A HALF DEGREES ABOVE NORMAL, AND PLACED THIS JANUARY AS THE 17TH WARMEST JANUARY ON RECORD. OF THE 31 DAYS IN THE MONTH, 23 FINISHED ABOVE NORMAL. THERE WAS ONE RECORD TEMPERATURE TIED, THIS WHEN THE TEMPERATURE ONLY DROPPED TO 38F ON THE 11TH, TYING THE FORMER RECORD SET BACK IN 1975. THERE WERE 12 DAYS THIS MONTH THAT REMAINED AT OR ABOVE FREEZING; AND ONLY 2006 (14 DAYS) AND 1932 (17 DAYS) HAD MORE. IN FACT, OF THESE 12 DAYS THERE WERE 7 DAYS IN A ROW THAT REMAINED AT OR ABOVE FREEZING. ONLY YEARS, 1906, 1928, 2007 WITH 8 DAYS, AND 1995 WITH 10 DAYS HAD LONGER STRETCHES. PRECIPITATION FOR THE MONTH FINISHED ABOUT A THIRD OF AN INCH ABOVE NORMAL. MOST OF THIS PRECIPITATION FELL AS RAIN, AS SNOWFALL WAS WELL BELOW NORMAL. JUST 11.8 INCHES OF SNOW FELL, WHICH IS WELL BELOW THE NORMAL OF 28.2 INCHES. THIS RANKS AS TIED FOR 25TH LEAST SNOWIEST JANUARY ON RECORD. ABOUT HALF THE MONTHLY SNOW FELL ON THE 24TH IN A WEAK SYNOPTIC EVENT. PRECIPITATION WAS EVENLY SPREAD THROUGH THE MONTH AND THERE WERE NO MAJOR RAIN EVENTS AROUND THE METRO ROCHESTER AREA, THOUGH HEAVY RAIN ACROSS THE SOUTHERN TIER AND UPPER GENESEE VALLEY ON THE 12TH CAUSED SIGNIFICANT FLOODING. JANUARY OPENED THE NEW YEAR QUIET WITH TEMPERATURES RISING INTO THE 40S THE FIRST 4 DAYS OF THE MONTH. A WARM FRONT LIFTED ACROSS THE REGION ON THE 3RD, SPREADING RAIN ACROSS THE REGION...BUT WITH MINOR FLOODING. A COLD FRONT SWEPT ACROSS THE REGION DURING THE EARLY MORNING HOURS OF THE 4TH, SENDING THE REGION INTO ITS ONLY PROLONGED COLD SPELL THIS MONTH, AND GENERATING LAKE EFFECT SNOW MAINLY TO THE EAST OF THE LAKES. LAKE EFFECT SNOW FLEW EAST OF THE LAKES FROM THE 4TH THROUGH THE 8TH WITH UP TO 3 FEET FALLING EAST OF BOTH LAKE ERIE (SW NYS) AND LAKE ONTARIO (TUG HILL) BUT ONLY A FEW INCHES ALONG THE SOUTHERN LAKE ONTARIO SHORELINE THROUGH THE ROCHESTER AREA. AFTER 5 DAYS WITH BELOW NORMAL AIR TEMPERATURES, A WARM FRONT LIFTED TOWARDS THE REGION. INITIALLY A WINTRY MIX OF SNOW, THEN SLEET AND FREEZING RAIN FELL ACROSS WESTERN NEW YORK ON THE 10TH AND 11TH. A WAVE OF LOW PRESSURE PRODUCE WIDESPREAD RAIN ON THE 12TH, WITH AN INCH TO AN INCH AND A HALF FALLING ACROSS THE SOUTHERN TIER AND TOWARDS THE LOWER GENESEE VALLEY...PRODUCING FLOODING OF BOTH RIVERS, AND AREA- WIDE. FROM THE 17TH TO THE 23RD AIR TEMPERATURES REMAINED ABOVE FREEZING. THERE WAS A RAIN AND THUNDERSTORM EVENT ON THE 17TH THAT PRODUCED A HALF TO ONE INCH OF RAINFALL ACROSS THE REGION, THOUGH WITH MUCH OF THE SNOW MELTED FROM AN EARLIER RAIN EVENT, FLOODING WAS MINIMAL. THE WARMER TEMPERATURES, AND AT TIMES NORTHEAST WINDS PRODUCED A PERIOD OF LOW CLOUDS AND STRATUS. CLOUDS AND VISIBILITIES TENDED TO BE LOWEST FROM THE EVENING, THROUGH THE OVERNIGHT AND INTO THE MORNING HOURS OF THE 20TH THROUGH THE 23RD. THERE WAS A BREAK IN THE CLOUDS ON THE 21ST AND THIS ALLOWED FOR TEMPERATURES TO SPIKE TOWARDS 50F...THE THIRD 50 DEGREE READING THIS MONTH. TRANQUIL CONDITIONS STARTED THE 4TH WEEK OF THE MONTH BUT A MARGINALLY COLD AIRMASS BROUGHT UP TO HALF A FOOT OF GENERAL SNOW ACROSS THE GENESEE VALLEY ON THE 24TH BEFORE A SECOND SIGNIFICANT LAKE EFFECT SNOW EVENT, ONE THAT DUMPED UPWARDS TO A FOOT AND A HALF OF SNOW ACROSS THE SOUTHERN TIER AND BOSTON HILLS, BUT AGAIN JUST A FEW INCHES ALONG THE SOUTHERN LAKE ONTARIO SHORELINE AND THE METRO ROCHESTER AREA. A CLIPPER ON THE 31ST DROPPED ANOTHER HALF INCH OF SNOW ACROSS THE ROCHESTER REGION. WINDS WERE LIGHTER THAN DECEMBER, FINISHING THE MONTH AT 10.3 MPH, WHICH IS JUST BELOW NORMAL. THERE WERE TWO HIGH WIND EVENTS THIS MONTH, THE FIRST ON THE 4TH WHEN WIND GUSTS TOPPED 50 MPH ACROSS THE ROCHESTER METRO AREA, AND A SECOND ON THE MORNING HOURS OF THE 11TH...WHICH MEASURED A PEAK WIND SPEED OF 58 MPH AT THE ROCHESTER AIRPORT. IN ALL A MILD MONTH, LACKING THE DEEP SNOWPACK USUALLY FOUND DURING JANUARY. && THOMAS $$

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