BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, NOVEMBER 21, 2018  ALL TIMES ARE IN EASTERN STANDARD TIME FAIR WEATHER WITH A MODERATE SOUTHWESTERLY WIND.... Visibility was 40 miles this morning, increasing to 70  miles by the 1 P.M observation. The snowfall overnight  left .1 inches in the gauge at 7 A.M. We measured .38 inches from the yesterday's rainfall. Wind has  increased since this morning, with frequent gusts  at or above 20 mph. The maximum temperature reached  so far today is 37F, 11 degrees below the daily normal  of 48F. The low since midnight is 26F, 6 degrees below  the daily normal minimum of 32F.   Today's Observations: 7 A.M. Weather: Broken altostratus and cirrostratus, few cumulus NE-SW   Temperature: 28F; Dew Point: 24F; Wind: WSW at 10G14 kts   Sea-level pressure: 30.01 ins. Hg, rising steadily       Visibility: 40 miles, thin smoke layer W-NE 6-hr Max temp: 31F 6-hr Min temp: 26F 24-hr Precip: 0.38 ins. 24-hr snowfall: 0.1 ins. Snow depth: 0 ins.    BHO SA 1155 E100 BKN 250 BKN 40 164/28/24/2510G14/001/  FEW CU NE-SW THN K LYR W-NE/ 8/119 70038 51012 10031 20026  10 A.M. Weather: Overcast altostratus, few cumulus in all directions Temperature: 35F; Dew Point: 24F; Wind: SSW at 12G21 kts   Sea-level pressure: 29.99 ins. Hg, falling steadily  Visibility: 40 miles 3-hr Precip: 0.00 ins.  3-hr snowfall: 0.0 ins.  BHO SA 1455 E100 OVC 40 157/35/24/2012G21/999/ FEW CU ALQDS/  8/11/ 58007  1 P.M. Weather: Overcast altostratus, few cumulus in all directions   Temperature: 37F; Dew Point: 25F; Wind: SSW at 12G23 kts  Sea-level pressure: 29.91 ins. Hg, falling rapidly    Visibility: 70 miles 6-hr Max temp: 37F 6-hr Min temp: 28F  6-hr Precip: 0.00 ins. 6-hr snowfall: 0.0 ins. Snow depth: 0 ins. BHO SA 1755 E100 OVC 70 129/37/25/2012G23/991/ FEW CU ALQDS/  8/11/ 56036 10037 20028   SUMMARY FOR TUESDAY, NOVEMBER 20, 2018  TEMPERATURE (DEGREES F) MAX.....38   NORMAL.....48 MIN.....33   NORMAL.....32 MEAN....36   NORMAL.....40 DEPARTURE FROM 30-YEAR NORMAL........................-4 TOTAL DEPARTURE FOR THE MONTH.......................-20 [-1.2 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............29   DEPARTURE.........+4 TOTAL HEATING UNITS FOR THE MONTH.............452   DEPARTURE........+20 TOTAL HEATING UNITS FOR THE SEASON............996   DEPARTURE.........+1 TOTAL HEATING UNITS LAST SEASON TO DATE.......686   DIFFERENCE......+280 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY....................30 NE  AT 12:42 P.M.                    AERO.........................30 NE  AT 11:24 A.M.                     ASOS.........................30 NE  AT 12:14 P.M.                     DAVIS........................30 NE  AT 11:26 A.M. RMY N/A FASTEST MILE FOR YESTERDAY......................23 NE  AT 12:08 P.M.  MAXIMUM 2-MINUTE ASOS AVERAGE...................21 NE  AT 12:15 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................21 NE  AT 12:09 P.M. AVERAGE WIND SPEED AND DIRECTION..............10.3 NE                    ASOS.......................10.8                    DAVIS......................10.1 N [12 deg.]   PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.38  DEPARTURE.......+0.22                          ASOS..............0.41 TOTAL PRECIPITATION FOR THE MONTH..........7.87  DEPARTURE.......+4.73                          ASOS..............8.18  TOTAL PRECIPITATION FOR THE YEAR..........60.91  DEPARTURE......+14.18                          ASOS.............63.04 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.1  DEPARTURE........+0.1 TOTAL SNOWFALL FOR THE MONTH................7.6  DEPARTURE........+6.7 TOTAL SNOWFALL FOR THE SEASON...............7.6  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 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 Low temp since midnight is 26F; normal low is 32F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 21 HIGH 69 IN 1931 LOW 10 IN 1888 PRECIP 2.60 INCHES IN 1950 SNOWFALL 4.0 INS IN 1929 PEAK GUST 69 NW IN 1989 RECORDS FOR NOVEMBER 22 HIGH 70 IN 1931 LOW 12 IN 1987 PRECIP 1.78 INS IN 2005 SNOWFALL 9.0 INS IN 1971 PEAK GUST 70e SE IN 1945 TODAY'S REPORT PREPARED BY: Benjamin Turner