BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, NOVEMBER 23, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME FAIR WEATHER WITH ALMOST PERFECT VISIBILITY ATOP GREAT BLUE HILL.... We observed partly cloudy skies today, along with a perfect   visibility of 90 miles. We measured 0.12 inches from last night's rainfall. Wind has been consistent from the west, blowing at an average of 10 mph. Dew points have remained in the teens, with humidity decreasing to 30% by the 1 P.M. observation.   The high so far today is 43F, which is 4 degrees below the daily normal maximum of 47F. The low since midnight is 27F, which is 4 degrees below the normal minimum of 31F.   Today's Observations: 7 A.M. Weather: Broken cirrus Temperature: 27F; Dew Point: 17F; Wind: WNW at 10 kts Sea-level pressure: 29.96 ins. Hg, rising steadily Visibility: 90 miles 6-hr Max temp: 32F 6-hr Min temp: 27F 24-hr Precip:  0.12 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 E250 BKN 90 146/27/17/2910/996/ 8/001 70012 53016 10032 20027 10 A.M. Weather: Broken cirrus Temperature: 36F; Dew Point: 14F; Wind: W at 10 kts Sea-level pressure: 29.98 ins. Hg, rising steadily Visibility: 90 miles 3-hr Precip: 0.00 ins. BHO SA 1455 E250 BKN 90 153/36/14/2710/998/ 8/001 51007 1 P.M. Weather: Broken cirrus Temperature: 43F; Dew Point: 15F; Wind: WSW at 8 kts Sea-level pressure: 29.92 ins. Hg, falling steadily Visibility: 85 miles 6-hr Max temp: 43F 6-hr Min temp: 27F 3-hr Precip: 0.00 ins. BHO SA 1755 E250 BKN 85 135/43/15/2508/992/ 8/002 56018 10043 20027 SUMMARY FOR FRIDAY, NOVEMBER 22, 2019 TEMPERATURE (DEGREES F) MAX.....52   NORMAL.....48 MIN.....32   NORMAL.....32 MEAN....42   NORMAL.....40 DEPARTURE FROM 30-YEAR NORMAL................... +2 TOTAL DEPARTURE FOR THE MONTH...................-95 [-4.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............23  DEPARTURE........-2 TOTAL HEATING UNITS FOR THE MONTH..............591  DEPARTURE......+109 TOTAL HEATING UNITS FOR THE SEASON............1031  DEPARTURE.......-14 TOTAL HEATING UNITS LAST SEASON TO DATE.......1081  DEPARTURE.......-50 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................46 W   AT  5:49 P.M.                      AERO.........................47 W   AT  3:07 P.M                      ASOS.........................48 W   AT  5:51 P.M.                    DAVIS........................50 W   AT  5:46 P.M. RMY 47 FASTEST MILE FOR YESTERDAY......................34 W   AT  3:08 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................32 WNW AT  3:09 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................35 WNW AT  3:07 P.M. AVERAGE WIND SPEED AND DIRECTION..............19.7 SSW                                      ASOS.......................18.0                      DAVIS......................19.1 WSW [245 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.12  DEPARTURE......-0.04                          ASOS..............0.12 TOTAL PRECIPITATION FOR THE MONTH..........1.83  DEPARTURE......-1.64                          ASOS..............1.90 TOTAL PRECIPITATION FOR THE YEAR..........47.17  DEPARTURE......-0.08                          ASOS.............47.37 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.1 TOTAL SNOWFALL FOR THE MONTH................0.1  DEPARTURE.......-1.0 TOTAL SNOWFALL FOR THE SEASON...............0.1  DEPARTURE.......-1.3 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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  67/35/51/+5/..../0.0/534/86            67 S   AERO M  M   RMY N/A 11/02  50/31/41/-5/0.00/0.0/612/99            17 WNW AERO 14 W   RMY N/A 11/03  53/35/44/-2/0.00/0.0/567/92            25 WSW AERO 23 W   RMY 26 11/04  53/33/43/-2/0.00/0.0/546/89            24 S   AERO 20 S   RMY 24 11/05  54/44/49/+4/0.33/0.0/000/00            22 S   AERO 18 WNW RMY 28 11/06  51/36/44/-1/0.00/0.0/596/98            28 WSW AERO 23 W   RMY 27 11/07  55/38/47/+2/0.27/0.0/000/00            30 S   AERO 26 SSW RMY 32 11/08  38/23/31/-13/0.00/0.0/555/92           38 NW  AERO 37 WNW RMY 44   11/09  39/20/30/-14/0.00/0.0/583/97           22 S   AERO 18 S   RMY N/A 11/10  51/30/41/-3/0.00/0.0/174/29            30 SW  AERO 30 SW  RMY 31 11/11  52/39/46/+3/T/0.0/000/00               23 NE  AERO 22 NE  RMY 23 11/12  42/20/31/-12/0.08/0.1/000/00           37 WNW AERO 37 WNW RMY 41 11/13  28/15/22/-21/0.00/0.0/592/100          32 WNW AERO 32 WNW RMY 35 11/14  36/17/28/-14/0.00/0.0/136/23           18 SW  AERO 17 SW  RMY 20 11/15  51/32/42/0/0.00/0.0/553/94             25 WNW AERO 25 WNW RMY N/A 11/16  35/22/29/-13/0.00/0.0/580/99           35 NNW AERO 35 NNW RMY N/A 11/17  40/21/31/-10/T/T/.../..                28 ENE AERO 27 ENE RMY 29 11/18  36/32/34/-7/..../0.0/.../..            28 NNE AERO 29 N   RMY 31 11/19  42/36/39/-2/.../0.0/.../..             12 SSW AERO  9 NNW RMY N/A 11/20  38/33/36/-4/..../T/.../..              20 NW  AERO 18 NW  RMY 21 11/21  46/30/38/-2/0.00/0.0/.../..            21 NW  AERO 21 NW  RMY N/A 11/22  52/32/42/+2/0.12/0.0/.../..            46 W   AERO 47 W   RMY 47 11/23 The low since midnight is 27F, daily normal minimum is 31F DAILY RECORDS FOR NOVEMBER 11/13/19: DAILY RECORD LOW MAXIMUM TEMPERATURE OF 28F,           BREAKS PREVIOUS RECORD OF 30F SET IN 1920.           It was also the third earliest maximum temperature           colder than 30F on record, behind only 28F on 11/8/1894           and 29F on 11/12/1894. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR NOVEMBER 23 HIGH 73 IN 1931 LOW 9 IN 1888, 2018 PRECIP 2.33 INS IN 2006 SNOWFALL 5.5 INS IN 1989 PEAK GUST 64e S IN 1953 RECORDS FOR NOVEMBER 24 HIGH 69 IN 1931 LOW 7 IN 1897 PRECIP 1.76 INCHES IN 1901 SNOWFALL 4.5 INS IN 1936 PEAK GUST 69 SSW IN 1959 TODAY'S REPORT PREPARED BY: Benjamin Turner