BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY MONDAY, NOVEMBER 19, 2018  ALL TIMES ARE IN EASTERN STANDARD TIME FOGGY, DRIZZLY AND COOL WITH LIGHT WINDS.... Fog reduced visibility to a 1/16th mile after the  7 A.M. observation, where the visibility was 5 miles. We observed a partial undercast this morning, with  drizzly conditions persisting until noon. Precipitation was very light, and only left a trace. Winds were light  and even calm at times, with a gust so far today of 12  mph. Winds were 6 mph on average or lower during the  observation period. The maximum temperature reached so far today is 38F, 11 degrees below the daily normal of  49F. The low since midnight is 33F, same as the daily normal minimum.  Today's Observations: 7 A.M. Weather: Overcast nimbostratus, partial undercast,  very light drizzle Temperature: 35F; Dew Point: 35F; Wind: E at 8 kts   Sea-level pressure: 30.17 ins. Hg, falling steadily       Visibility: 5 miles, fog 6-hr Max temp: 35F 6-hr Min temp: 33F 24-hr Precip: 0.01 ins. 24-hr snowfall: 0.0 ins. Snow depth: 0 ins.    BHO SA 1155 E30 OVC 5L-F 218/35/35/0908/017/ PARTIAL  UNDERCAST ALQDS L-CTD PCPN VRY LGT/ 8/02/ 70001 58009  10035 20033  10 A.M. Weather: Very light drizzle Temperature: 35F; Dew Point: 35F; Wind: NW at 2 kts, Wind: Light and variable   Sea-level pressure: 30.15 ins. Hg, falling steadily  Visibility: 1/16 mile, fog 3-hr Precip: Trace 3-hr snowfall: 0.0 ins.  BHO SA 1455 W3 X 1/16L-F 209/35/35/3202/015/ L-CTD PCPN  VRY LGT WND L/V/ 8//// 6//// 58009  1 P.M. Weather: Fog Temperature: 35F; Dew Point: 35F; Wind: NW at 4 kts, Wind: Light  Sea-level pressure: 30.09 ins. Hg, falling, then more rapidly    Visibility: 1/16 mile, fog 6-hr Max temp: 38F 6-hr Min temp: 34F  6-hr Precip: Trace 6-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1755 W3 X 1/16F 188/35/35/3004/009/ WND LGT/ 8////  6//// 56021 10038 20034   SUMMARY FOR SUNDAY, NOVEMBER 18, 2018  TEMPERATURE (DEGREES F) MAX.....40   NORMAL.....49 MIN.....30   NORMAL.....33 MEAN....35   NORMAL.....41 DEPARTURE FROM 30-YEAR NORMAL........................-6 TOTAL DEPARTURE FOR THE MONTH.......................-11 [-0.4 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............30   DEPARTURE.........+6 TOTAL HEATING UNITS FOR THE MONTH.............394   DEPARTURE........+11 TOTAL HEATING UNITS FOR THE SEASON............938   DEPARTURE.........-8 TOTAL HEATING UNITS LAST SEASON TO DATE.......667   DIFFERENCE......+271 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................21 W   AT 12:41 A.M.                    AERO.........................21 W   AT 12:41 A.M.                     ASOS.........................21 W   AT 12:42 A.M.                     DAVIS........................21 WNW AT 12:14 A.M. RMY M FASTEST MILE FOR YESTERDAY......................16 W   AT 12:44 A.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................16 W   AT 12:42 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................17 W   AT 12:42 A.M. AVERAGE WIND SPEED AND DIRECTION..............5.0 W                    ASOS.......................5.3                    DAVIS......................5.6 W [276 deg.]   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01  DEPARTURE.......-0.15                          ASOS..............0.02 TOTAL PRECIPITATION FOR THE MONTH..........7.39  DEPARTURE.......+4.57                          ASOS..............7.69  TOTAL PRECIPITATION FOR THE YEAR..........60.43  DEPARTURE......+14.02                          ASOS.............62.55 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE........-0.1 TOTAL SNOWFALL FOR THE MONTH................7.5  DEPARTURE........+6.7 TOTAL SNOWFALL FOR THE SEASON...............7.5  DEPARTURE........+6.4 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 Low temp since midnight is 33F; normal low is 33F 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: Benjamin Turner