BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, DECEMBER 1, 2018 ALL TIMES ARE IN EASTERN STANDARD TIME FAIR VISIBILITY DAY WITH FAIRLY LIGHT WIND SPEEDS... NOVEMBER AND FALL FINISH AS THE WETTEST ON RECORD... The day started with very few clouds, which increased in quantity as the day progressed. Visibility has remained fairly reasonable throughout the day, with Mount Monadnock being faintly visible 70 miles away. The high temperature so far today is 41F, 3 degrees below our normal daily maximum of 44F. Wind speeds have remained fairly light, only occasionally gusting over 10 knots. BHO Wettest Novembers, inches (1886-2018): 1) 10.32 in 2018 2) 9.78 in 1983 3) 9.29 in 1945 4) 9.17 in 1972 5) 8.95 in 1895 6) 8.93 in 1988 7) 8.79 in 1963 BHO Wettest Falls (Sep-Nov), inches (1886-2018): 1) 25.42 in 2018 2) 23.18 in 2005 3) 23.13 in 1996 4) 22.47 in 1888 5) 20.65 in 2011 6) 20.64 in 1932 7) 20.08 in 1962 Today's Observations: 7 A.M. Weather: Few stratocumulus in all directions Temperature: 29F; Dew Point: 27F; Wind: NNW at 11G16 kts, Sea-level pressure: 30.15 ins. Hg, rising unsteadily Visibility: 70 miles 6-hr Max temp: 30F 6-hr Min temp: 28F 24-hr Precip: 0.00 ins. 24-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1155 CLR 70 209/29/27/3411G16/015/ FEW SC ALQDS 8/400 50022 10030 20028 10 A.M. Weather: Scattered stratocumulus Temperature: 37F; Dew Point: 28F; Wind: NNW at 4 kts, Wind: light Sea-level pressure: 30.18 ins. Hg, rising unsteadily Visibility: 70 miles 3-hr Precip: 0.00 ins. 3-hr snowfall: 0.0 ins. BHO SA 1455 25 SCT 70 220/37/28/3404/018 WND LGT/ 8/400 51011 1 P.M. Weather: Scattered stratocumulus, scattered cirrocumulus Temperature: 39F; Dew Point: 28F; Wind: calm Sea-level pressure: 30.20 ins. Hg, falling then rising Visibility: 70 miles 6-hr Max temp: 41F 6-hr Min temp: 29F 6-hr Precip: 0.00 ins. 6-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1755 30 SCT 250 SCT 70 226/39/28/0000/020/ WND CALM 8/409 53006 10041 20029 SUMMARY FOR FRIDAY, NOVEMBER 30, 2018 TEMPERATURE (DEGREES F) MAX.....39 NORMAL.....45 MIN.....27 NORMAL.....29 MEAN....33 NORMAL.....37 DEPARTURE FROM 30-YEAR NORMAL........................-4 TOTAL DEPARTURE FOR THE MONTH.......................-79 [-2.8 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............32 DEPARTURE..........4 TOTAL HEATING UNITS FOR THE MONTH.............776 DEPARTURE........+78 TOTAL HEATING UNITS FOR THE SEASON...........1320 DEPARTURE........+59 TOTAL HEATING UNITS LAST SEASON TO DATE.......969 DIFFERENCE......+351 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................18 NW AT 12:44 A.M. AERO.........................16 NW AT 12:42 A.M. ASOS.........................18 NW AT 12:46 A.M. DAVIS........................18 NW AT 12:45 A.M. RMY N/A FASTEST MILE FOR YESTERDAY......................13 NW AT 6:25 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................13 NW AT 3:06 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................13 NW AT 3:06 A.M. AVERAGE WIND SPEED AND DIRECTION...............6.1 NW ASOS........................6.5 DAVIS.......................6.8 WNW [302 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE.......-0.16 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.00 DEPARTURE........0.00 ASOS..............0.00 TOTAL PRECIPITATION FOR THE YEAR..........63.37 DEPARTURE......+15.03 ASOS.............65.63 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE........-0.2 TOTAL SNOWFALL FOR THE MONTH................0.0 DEPARTURE.........0.0 TOTAL SNOWFALL FOR THE SEASON...............7.6 DEPARTURE........+5.0 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 11/01 65/49/57/+11/..../006/01 25 SSW AERO 24 SSW RMY N/A 11/02 65/52/59/+13/..../000/00 37 SSW AERO 41 SSW RMY N/A 11/03 64/42/53/+7/..../144/24 59 W AERO 60 W RMY 58 11/04 52/37/45/0/..../570/96 31 W AERO 30 W RMY N/A 11/05 49/40/45/0/..../000/00 30 ENE AERO 29 ENE RMY 28 11/06 58/45/52/+7/..../000/00 29 SSW AERO 29 SSW RMY 31 11/07 60/50/55/+10/..../456/98 30 WSW AERO 30 WSW RMY 32 11/08 52/37/45/+1/..../234/78 29 WNW AERO 26 WNW RMY 23 11/09 48/34/41/-3/..../000/00 43 E AERO 40 E RMY 42 11/10 45/32/39/-5/..../576/100 45 W AERO 47 WNW RMY 46 11/11 43/30/37/-6/0.00/462/80 32 WNW AERO 30 W RMY 32 11/12 48/27/38/-5/0.00/000/00 18 SW AERO 18 SW RMY N/A 11/13 52/37/45/+2/..../458/80 44 WNW AERO 44 WNW RMY 48 11/14 37/20/29/-13/..../000/00 45 WNW AERO 50 WNW RMY 50 11/15 30/19/25/-17/..../.../.. 33 E AERO 36 E RMY N/A 11/16 41/30/36/-6/..../.../.. 43 E AERO 44 ENE RMY N/A 11/17 45/34/40/-1/0.00/.../.. 28 W AERO 27 W RMY 28 11/18 40/30/35/-6/0.00/.../.. 21 W AERO 21 W RMY M 11/19 38/33/36/-5/..../.../.. 16 E AERO 14 E RMY N/A 11/20 38/31/35/-5/..../.../.. 30 NE AERO 30 NE RMY N/A 11/21 39/20/30/-10/..../.../.. 40 WNW AERO 46 WNW RMY 47 11/22 20/09/15/-25/..../.../.. 36 NW AERO 41 NW RMY 42 11/23 30/09/20/-19/0.00/.../.. 25 SW AERO 25 SW RMY 27 11/24 43/24/34/-5/..../.../.. 27 SW AERO 27 ESE RMY N/A 11/25 43/40/42/+3/..../.../.. 39 ENE AERO 39 ENE RMY 39 11/26 44/39/42/+4/..../.../.. 45 E AERO 44 E RMY 45 11/27 45/33/39/+1/..../.../.. 44 ENE AERO 44 ENE RMY N/A 11/28 39/31/35/-3/..../.../.. 37 WNW AERO 41 WNW RMY 42 11/29 43/30/37/0/..../.../.. 40 NW AERO 41 NW RMY 44 11/30 39/27/33/-4/0.00/.../.. 18 NW AERO 16 NW RMY N/A 12/01 Low temp since midnight is 28F; normal low is 29F DAILY RECORDS FOR NOVEMBER 2018 11/22/18: DAILY RECORD LOW MAXIMUM TEMPERATURE OF 20F, BREAKS PREVIOUS RECORD OF 26F SET IN 1972 AND 2008 11/22/18: DAILY RECORD LOW MINIMUM TEMPERATURE OF 9F, BREAKS PREVIOUS RECORD OF 12F SET IN 1987 11/23/18: DAILY RECORD LOW MINIMUM TEMPERATURE OF 9F, TIES PREVIOUS RECORD OF 9F SET IN 1888 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR DECEMBER 1 HIGH 70 IN 2001 LOW 3 IN 1887 PRECIP 1.46 INS. IN 1917 SNOW 2.0 INS. IN 1902 PEAK GUST 72 MPH NW IN 1964 RECORDS FOR DECEMBER 2 HIGH 61 IN 1998 LOW 3 IN 1890 PRECIP 2.09 INS. IN 1974 SNOWFALL 5.0 INS. IN 1894, 1929 PEAK GUST 89e MPH SSE IN 1942 TODAY'S REPORT PREPARED BY: Samantha Richard