Climatological Report (Monthly)
Issued by NWS Buffalo, NY

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000 CXUS51 KBUF 041446 CLMROC CLIMATE REPORT NATIONAL WEATHER SERVICE BUFFALO NY 1139 AM EST SUN FEB 1 2015 ................................... ...THE ROCHESTER NY CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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 74 01/25/1950 LOW -17 01/16/1994 HIGHEST 57 01/04 53 01/13 01/11 LOWEST -9 01/14 -6 01/03 AVG. MAXIMUM 29.2 31.7 -2.5 28.7 AVG. MINIMUM 9.9 17.6 -7.7 12.5 MEAN 19.5 24.7 -5.2 20.6 DAYS MAX >= 90 0 0.0 0.0 0 DAYS MAX <= 32 20 15.9 4.1 18 DAYS MIN <= 32 30 27.5 2.5 29 DAYS MIN <= 0 4 2.6 1.4 6 PRECIPITATION (INCHES) RECORD MAXIMUM 8.05 1878 MINIMUM 0.52 1921 TOTALS 1.74 2.41 -0.67 1.23 DAYS >= .01 17 17 DAYS >= .10 6 3 DAYS >= .50 1 0 DAYS >= 1.00 0 0 GREATEST 24 HR. TOTAL 0.63 01/03 TO 01/04 SNOWFALL (INCHES) RECORDS TOTAL 61.3 2004 TOTALS 17.7 28.2 -10.5 20.8 SINCE 7/1 43.4 57.4 -14.0 56.8 SNOWDEPTH AVG. 2 4 -2 2 DAYS >= 1.0 9 8.8 0.2 6 GREATEST SNOW DEPTH 4 01/31 10 01/03 01/13 24 HR TOTAL 3.4 01/12 DEGREE_DAYS HEATING TOTAL 1402 1251 151 1371 SINCE 7/1 3622 3704 -82 3868 COOLING TOTAL 0 0 0 0 SINCE 1/1 0 0 0 0 ................................................... WIND (MPH) AVERAGE WIND SPEED 10.8 HIGHEST WIND SPEED/DIRECTION 40/250 DATE 01/04 HIGHEST GUST SPEED/DIRECTION 57/240 DATE 01/04 SKY COVER POSSIBLE SUNSHINE (PERCENT) MM AVERAGE SKY COVER 0.70 NUMBER OF DAYS FAIR 2 NUMBER OF DAYS PC 11 NUMBER OF DAYS CLOUDY 18 AVERAGE RH (PERCENT) 69 WEATHER CONDITIONS. NUMBER OF DAYS WITH THUNDERSTORM 0 MIXED PRECIP 1 HEAVY RAIN 0 RAIN 2 LIGHT RAIN 3 FREEZING RAIN 0 LT FREEZING RAIN 3 HAIL 0 HEAVY SNOW 1 SNOW 3 LIGHT SNOW 25 SLEET 1 FOG 20 FOG W/VIS <= 1/4 MILE 1 HAZE 11 - INDICATES NEGATIVE NUMBERS. R INDICATES RECORD WAS SET OR TIED. MM INDICATES DATA IS MISSING. T INDICATES TRACE AMOUNT. && ...A COLD JANUARY... JANUARY WAS A COLD WINTER MONTH ACROSS WESTERN NEW YORK AS COLD WEATHER PATTERNS TOOK THE UPPER HAND OVER ANY ATTEMPTS OF A WINTER RESPITE FROM THE FRIGID TEMPERATURES. NICKEL AND DIME SNOWS FELL THROUGH THE MONTH...OF WHICH EARLY MONTH WAS OF THE LAKE EFFECT SNOW VARIETY...AND LATER MONTH WAS SYNOPTICALLY DRIVEN SNOWS. THE AVERAGE TEMPERATURE THIS MONTH WAS 19.5F DEGREES WHICH IS JUST OVER 5 DEGREES BELOW NORMAL. THIS MADE JANUARY THE 23RD COLDEST IN 145 YEARS...AND COLDEST JANUARY SINCE 2009 WHEN THE AVERAGE TEMPERATURE WAS THEN 19.1F. THERE WERE 17 DAYS THAT DROPPED INTO THE SINGLE DIGITS THIS MONTH...TWO MORE THAN LAST JANUARY...AND MORE THAN DOUBLE THE TYPICAL AMOUNT. RECORDS THAT WERE PREVIOUSLY ESTABLISHED IN JANUARY STOOD THROUGH THE MONTH. PRECIPITATION FOR THE MONTH WAS ABOUT A HALF INCH BELOW NORMAL...WITH SNOWFALL ALSO MORE THAN 10 INCHES BELOW NORMAL. THERE WAS ONE RAINSTORM THIS MONTH...ON THE 3RD-4TH...OTHERWISE MUCH OF THE PRECIPITATION THAT FELL THIS MONTH WAS SNOW. THERE WERE NO SNOWFALL RECORDS THIS MONTH...AND THE GREATEST CALENDAR DAY SNOWFALL WAS BUT A MERE 3.4 INCHES ON THE 12TH. MEASURABLE SNOWFALL OCCURRED ON 20 DAYS THIS MONTH WHICH WAS 4 DAYS MORE THAN NORMAL. THE NEW YEAR BEGAN WITH LAKE EFFECT SNOW DOWNWIND OF THE EASTERN GREAT LAKES ON A GUSTY SOUTHWEST WIND. THIS WIND PROVED TOO STRONG FOR A HEALTHY BAND OF LAKE SNOW TO DEVELOP...THOUGH SEVERAL INCHES DID COAT WESTERN NEW YORK NEW YEARS DAY. THE NEXT THREE DAYS OF JANUARY WERE ATYPICAL FOR THE MONTH AS A WHOLE...AS A SOUTHERLY FLOW AND ABOVE NORMAL TEMPERATURES WERE COUPLED WITH A SOAKING RAINFALL. OVER AN INCH OF RAIN FELL ACROSS WESTERN NEW YORK ON THE 3RD AND 4TH...WITH THE GREATEST RAINFALL AMOUNTS FOUND JUST TO THE NORTHEAST OF LAKE ERIE. A SURGE OF VERY COLD AIR REACHED THE EASTERN GREAT LAKES ON THE 5TH...AND REMAINED ACROSS THE REGION FOR THE BETTER PART OF A WEEK. THIS COLD AIRMASS PRODUCED THREE MODERATE LAKE EFFECT SNOW EVENTS EAST OF LAKE ERIE WITH EACH EVENT DROPPING BETWEEN ONE AND TWO FEET OF SNOW. BY MID MONTH THE ARCTIC AIRMASS RETREATED AND A WESTERLY FLOW RETURNED ACROSS THE EASTERN GREAT LAKES REGION. THIS WESTERLY FLOW CONCENTRATED THE ARCTIC COLD WELL TO OUR NORTH...ALLOWING WESTERN NEW YORK TO CYCLE THROUGH TEMPERATURES NEAR NORMAL. WITHIN THIS WESTERLY FLOW THERE WERE SEVERAL SYNOPTIC CLIPPERS THAT CROSSED THE REGION (12TH, 26-27TH AND 29TH-30TH) WITH TYPICAL LIGHT SNOWFALLS. ON THE 24TH WIDESPREAD LIGHT FREEZING RAIN AND DRIZZLE GLAZED WESTERN NEW YORK WITH HUNDREDS OF CARS SLIDING OFF THE ROADWAYS. AN AREA OF HIGH PRESSURE BROUGHT CRYSTAL CLEAR BLUE SKIES ON WEDNESDAY JANUARY 28TH. COLD AIR RETURNED FOR GOOD AT THE END OF THE MONTH WITH THE LAST WEEK OF THE MONTH DIPPING INTO THE SINGLE DIGITS. TYPICAL SHORELINE ICE WAS FOUND ON THE SOUTHERN SHORELINE OF LAKE ONTARIO. THE PEAK WIND GUST THIS MONTH WAS 57 MPH ON THE 4TH. IN ALL JANUARY WAS BITTERLY COLD FOR THE GENESEE VALLEY. && THOMAS $$

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