BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, NOVEMBER 19, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME DREARY WEATHER CONTINUES... Different day, but same story as yesterday with overcast skies, rain, drizzle, and fog. 0.50" of rain was measured for the 24 hour period ending at 7 A.M. this morning. An additional 0.10" has been recorded in the 6 hours ending at 1 P.M. The observatory has spent the day in the clouds, as such visibility has been extremely poor, stuck under 1/2 mile all day. Also of note is the light wind, we actually had a 2.5 hour period early this morning of calm winds, not something that happens too commonly here on the hill. The peak wind so far today has only been around 12 mph! The high so far today is 41F, which is 8 degrees below the daily normal maximum of 49F. The low since midnight is 36F, which is 3 degrees above the normal minimum of 33F.   Today's Observations: 7 A.M. Weather: Vertical visibility 300 feet, sky obscured, light rain Temperature: 37F; Dew Point: 37F; Wind: Calm, Sea-level pressure: 29.75 ins. Hg, rising, then more slowly Visibility: 1/2 miles, fog 6-hr Max temp: 37F 6-hr Min temp: 36F 24-hr Precip:  0.50 ins. 24-hr Snowfall: 0.0 ins. BHO SA 1155 W3 X 1/2R-F 073/37/37/0000/975/ WND CALM/ 8//// 51015 6/// 70050 10037 20036 10 A.M. Weather: Vertical visibility 200 feet, sky obscured, light drizzle Temperature: 39F; Dew Point: 39F; Wind: S at 3 kts, Sea-level pressure: 29.75 ins. Hg, rising, then steady Visibility: 1/4 miles, fog 3-hr Precip: 0.07 ins. BHO SA 1455 W2 X 1/4L-F 076/39/39/1703/975/ WND LGT/ 8//// 51003 6007 1 P.M. Weather: Vertical visibility 200 feet, sky obscured, light drizzle Temperature: 40F; Dew Point: 40F; Wind: SSW at 4 kts Sea-level pressure: 29.75 ins. Hg, falling steadily Visibility: 1/4 miles, fog 6-hr Max temp: 41F 6-hr Min temp: 37F 6-hr Precip: 0.10 ins. BHO SA 1755 W2 X 1/4L-F 073/40/40/2004/975/ WND LGT/ 8//// 57003 6010 10041 20037 SUMMARY FOR MONDAY, NOVEMBER 18, 2019 TEMPERATURE (DEGREES F) MAX.....36   NORMAL.....49 MIN.....32   NORMAL.....33 MEAN....34   NORMAL.....41 DEPARTURE FROM 30-YEAR NORMAL................... -7 TOTAL DEPARTURE FOR THE MONTH...................-89 [-5.1 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............31  DEPARTURE........+10 TOTAL HEATING UNITS FOR THE MONTH..............486  DEPARTURE.......+103 TOTAL HEATING UNITS FOR THE SEASON.............926  DEPARTURE........-20 TOTAL HEATING UNITS LAST SEASON TO DATE........937  DEPARTURE........-11 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................28 NNE AT 11:17 A.M.                      AERO.........................29 N   AT  8:52 A.M                      ASOS.........................29 NE  AT 11:18 A.M.                    DAVIS........................29 N   AT 10:50 A.M. RMY 31 FASTEST MILE FOR YESTERDAY......................22 N   AT 12:24 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................20 N   AT  3:38 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................20 N   AT 12:06 P.M. AVERAGE WIND SPEED AND DIRECTION...............14.0 N                                      ASOS........................13.9                      DAVIS.......................14.1 N [008 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.50  DEPARTURE......+0.34                          ASOS..............0.47 TOTAL PRECIPITATION FOR THE MONTH..........1.37  DEPARTURE......-1.46                          ASOS..............1.37 TOTAL PRECIPITATION FOR THE YEAR..........46.71  DEPARTURE......+0.10                          ASOS.............46.84 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE....... 0.0 TOTAL SNOWFALL FOR THE MONTH................0.1  DEPARTURE.......-0.6 TOTAL SNOWFALL FOR THE SEASON...............0.1  DEPARTURE.......-0.9 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/.../..            67 S   AERO M  M   RMY N/A 11/02  50/31/41/-5/0.00/0.0/.../..            17 WNW AERO 14 W   RMY N/A 11/03  53/35/44/-2/0.00/0.0/.../..            25 WSW AERO 23 W   RMY 26 11/04  53/33/43/-2/0.00/0.0/.../..            24 S   AERO 20 S   RMY 24 11/05  54/44/49/+4/0.33/0.0/.../..            22 S   AERO 18 WNW RMY 28 11/06  51/36/44/-1/0.00/0.0/.../..            28 WSW AERO 23 W   RMY 27 11/07  55/38/47/+2/0.27/0.0/.../..            30 S   AERO 26 SSW RMY 32 11/08  38/23/31/-13/0.00/0.0/.../..           38 NW  AERO 37 WNW RMY 44   11/09  39/20/30/-14/0.00/0.0/.../..           22 S   AERO 18 S   RMY N/A 11/10  51/30/41/-3/0.00/0.0/.../..            30 SW  AERO 30 SW  RMY 31 11/11  52/39/46/+3/T/0.0/.../..               23 NE  AERO 22 NE  RMY 23 11/12  42/20/31/-12/0.08/0.1/.../..           37 WNW AERO 37 WNW RMY 41 11/13  28/15/22/-21/0.00/0.0/.../..           32 WNW AERO 32 WNW RMY 35 11/14  36/17/28/-14/0.00/0.0/.../..           18 SW  AERO 17 SW  RMY 20 11/15  51/32/42/0/0.00/0.0/.../..             25 WNW AERO 25 WNW RMY N/A 11/16  35/22/29/-13/0.00/0.0/.../..           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 The low since midnight is 36F, daily normal minimum is 33F 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 19 HIGH 72 IN 1941 LOW 10 IN 1936 PRECIP 1.92 INCHES IN 1926 SNOWFALL 11.0 INS IN 1986 PEAK GUST 59e E IN 1945 RECORDS FOR NOVEMBER 20 HIGH 72 IN 1953 LOW 10 IN 1894 PRECIP 2.78 INS IN 1988 SNOWFALL 3.0 INS IN 1897 PEAK GUST 73e S IN 1950 TODAY'S REPORT PREPARED BY: Matt Douglas