BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, NOVEMBER 6, 2016 ALL TIMES ARE IN EASTERN STANDARD TIME RAIN AND GRAUPEL ON THE SUMMIT TODAY Rain showers that began early this morning continued this afternoon mixing with some graupel for a time. Only a trace amount of Graupel fell but .01 inches of precipitation had fallen by the 1 o'clock observation. Winds had shifted from the West to the north by 1 and temperatures which had warmed into the mid 40s had dropped back into the lower 40s as humidities went to 100%. PRELIMINARY STATS FOR OCTOBER 2016 TEMPERATURE, Deg. F Avg. Max. 62.3 [+2.0] Avg. Min. 45.3 [+2.4] Mean 53.8 [+2.2] 24-hour corrected mean: 53.2 Max. for month: 79F on 19th Min. for month: 28F on 27th HEATING DEGREE DAYS Total heating units: 346 [-75] Total for the season: 421 [-142] Total for last season: 454 COOLING DEGREE DAYS Total cooling units: 7 [+2] Total for the season: 901 [+299] Total for last season: 810 PRECIPITATION, Inches Total: 7.04 [+2.35] Greatest in 24 hrs: 1.89 in. on 9th WIND, mph Avg. uncorrected wind speed: 11.3 Avg. corrected wind speed: 11.8 Prevailing wind direction: W at 11% Peak gust and direction: 47 W on 23rd SUNSHINE: Campbell-Stokes card minutes: 11598 mins. of possible 19824 or 59% Astronomical total minutes: 11986 mins. of possible 20503 or 58% 7 A.M. Weather: Broken altocumulus, Few cumulus ENE-ESE Temperature: 43F; Dew Point: 43F; Wind: NNW at 9 kts Sea-level pressure: 30.08 ins. Hg, increasing then more rapidly Visibility: 50 miles 6-hr Max temp: 47F 6-hr Min temp: 43F 24-hr precip: 0.03 in. BHO SA 1155 E50 BKN 50 186/43/43/3309/008/ FEW CU FRAC ENE-ESE/ 8/4// 53014 MANUAL 70003 ASOS 70003 10047 20043 10 A.M. Weather: Broken Altocumulus, Few cumulus Temperature: 44F; Dew Point: 42F; Wind: N at 8 kts, Sea-level pressure: 30.15 ins. Hg, rising then more rapidly Visibility: 40 miles BHO SA 1455 E80 BKN 70 213/44/42/1008/015/ FEW CU/ 8/17/ 53027 1 P.M. Weather: Broken Stratocumulus, Few Cumulus Fractus, Few Stratus Fractus Temperature: 42F; Dew Point: 42F; Wind: N at 7 kts Sea-level pressure: 30.18 ins. Hg, rising then more rapidly Visibility: 70 miles 6-hr Max. temp: 44F 6-hr Min. temp: 42F 6-hr Precip: 0.01 BHO SA 1755 E50 BKN 70 220/42/42/0507/018/ FEW CU FRAC FEW S FRAC VIRGA N AND E SHOWERS SSE-S AND SW VSBY SSE-SSW 30/ 8/8// 53007 MANUAL 60001 ASOS 60001 10044 20042 SUMMARY FOR SATURDAY, NOVEMBER 5, 2016 TEMPERATURE (DEGREES F) MAX.....55 NORMAL.....53 MIN.....32 NORMAL.....36 MEAN....44 NORMAL.....45 DEPARTURE FROM 30-YEAR NORMAL........................-1 TOTAL DEPARTURE FOR THE MONTH.......................+18 [+4.5 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0 DEPARTURE...........0 TOTAL COOLING UNITS FOR THE MONTH...............0 DEPARTURE...........0 TOTAL COOLING UNITS FOR THE SEASON............901 DEPARTURE........+299 TOTAL COOLING UNITS LAST SEASON TO DATE.......810 DIFFERENCE........+91 HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............21 DEPARTURE..........+1 TOTAL HEATING UNITS FOR THE MONTH..............79 DEPARTURE.........-17 TOTAL HEATING UNITS FOR THE SEASON............500 DEPARTURE........-160 TOTAL HEATING UNITS LAST SEASON TO DATE.......494 DIFFERENCE.........+6 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................24 W AT 12:05 P.M. ASOS........................24 W AT 12:05 P.M. DAVIS.......................22 W AT 12:06 P.M. RMY 24 FASTEST MILE FOR YESTERDAY.....................15 W AT 12:07 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................17 WNW AT 12:06 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................14 W AT 12:06 P.M. AVERAGE WIND SPEED AND DIRECTION..............9.4 W ASOS.......................9.8 DAVIS......................8.3 W [263 Deg.] *last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03 DEPARTURE......-0.12 ASOS..............0.03 TOTAL PRECIPITATION FOR THE MONTH..........0.04 DEPARTURE......-0.74 ASOS..............0.05 TOTAL PRECIPITATION FOR THE YEAR..........34.40 DEPARTURE.....-10.15 ASOS.............34.75 PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system gust RMY: R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized M: Missing data 10/1 57/52/55/-2/1.22/000/00 33 NNE AERO M RMY 34 10/2 55/52/54/-3/0.19/000/00 23 N AERO M RMY N/A 10/3 69/53/61/+5/0.00/404/58 21 ENE AERO M RMY 20 10/4 61/47/54/-2/T/493/71 26 NE AERO M RMY 27 10/5 61/44/53/-3/0.00/630/91 22 NE AERO M RMY 21 10/6 71/46/59/+4/0.00/682/99 16 SW* AERO M RMY 15 10/7 75/54/65/+10/0.00/679/99 16 S AERO M RMY 16 10/8 69/53/61/+7/0.00/130/19 23 SSW AERO M RMY 23 10/9 63/44/54/0/1.89/000/00 28 N AERO M RMY 34 10/10 57/40/49/-5/0.00/658/97 32 NW AERO M RMY 32 10/11 62/39/51/-2/0.00/655/97 17 N AERO M RMY N/A 10/12 68/49/59/+6/0.00/645/96 17 S AERO M RMY 17 10/13 71/52/62/+9/T/348/52 24 SSW AERO M RMY 28 10/14 58/41/50/-2/0.00/667/100 26 NNW AERO M RMY 25 10/15 58/38/48/-4/0.00/578/87 23 S AERO M RMY 26 10/16 68/46/57/+6/0.00/562/85 28 SSW AERO M RMY 30 10/17 76/58/67/+16/0.00/494/75 23 WSW AERO M RMY N/A 10/18 74/56/65/+14/0.54/210/32 35 SSW AERO M RMY 37 10/19 79/58/69/+19/0.00/549/84 29 SSW AERO M RMY N/A 10/20 64/54/59/+9/0.05/429/66 23 ENE AERO M RMY 22 10/21 75/57/66/+16/1.60/142/22 30 ESE AERO M RMY 31 TSTM 10/22 65/40/53/+4/0.23/000/00 37 WSW AERO M RMY N/A 10/23 56/41/49/0/0.00/578/90 47 W AERO M RMY 50 10/24 59/41/50/+1/T/607/95 38 W AERO M RMY 40 10/25 48/33/41/-8/0.00/586/92 33 WNW AERO M RMY 35 10/26 47/32/40/-8/0.00/495/78 29 WNW AERO M RMY 31 10/27 46/28/37/-11/0.67/013/02 28 ESE AERO 28 ESE RMY N/A 10/28 51/41/46/-2/0.38/000/00 40 WNW AERO 41 WNW RMY 43 10/29 55/37/46/-1/T/000/00 24 SSW AERO 24 SSW RMY N/A 10/30 63/43/53/+6/0.27/150/24 25 W AERO 25 WSW RMY N/A 10/31 51/34/43/-4/0.00/602/97 31 NW AERO 29 NW RMY 33 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO/RMY GUST AERO: Aerovane wind recording system gust RMY: R.M. Young wind gust recording system TSTM: Thunderstorm day (thunder heard some time during day) ....: Data not yet available, records not finalized M: Missing data 11/1 55/29/42/-4/0.00/.../.. 22 SSE AERO 22 S RMY N/A 11/2 69/45/57/+11/0.00/.../.. 24 SSW AERO 24 S RMY 26 11/3 65/49/57/+11/0.01/.../.. 38 W AERO 41 W RMY 38 11/4 56/35/46/+1/0.00/.../.. 26 NW AERO 26 NW RMY 30 11/5 55/32/44/-1/0.03/.../.. 24 W AERO 23 W RMY 24 11/6 Low temp since midnight is 43F; normal low is now 37F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 6 HIGH 71 IN 1959, 2015 LOW 22 IN 1951 PRECIP 1.72 INCHES IN 1907 SNOWFALL 8.0 IN 1894 PEAK GUST 63 W IN 1973 RECORDS FOR NOVEMBER 7 HIGH 75 IN 1938 LOW 21 IN 1930 PRECIP 2.02 INCHES IN 1953 SNOWFALL 3.5 IN 2012 PEAK GUST 69e ENE IN 1953 TODAY'S REPORT PREPARED BY: Robert Millette