BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, OCTOBER 17, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME VERY WINDY AND OVERCAST FOLLOWING A RECORD BREAKING STORM....NEW MINIMUM PRESSURE RECORD FOR OCTOBER SET THIS MORNING... Today we observed overcast skies with some momentary breaks. Visibility was limited due to a distant fog, with the highest of 50 miles being observed to the east. We measured 1.96 inches of rainfall from last night's storm, and a max gust of 60 mph from the E after midnight, which is a new record for the date. Wind continues to be strong, with speeds of 30 mph and a max gust of 55 mph since 7 A.M. This Nor'easter established a new record minimum sea-level pressure for the month of October of 28.82 in Hg (975.8 mb), which broke the previous record of 28.95 in Hg, set on October 25th, 1925. Overnight, the pressure fell in very rapid fashion (by almost 50 millibars in 24 hours) as the storm intensified over New England.   The high so far today is 51F, 9 degrees below the daily normal maximum of 60F. The low since midnight is 46F, 4 degrees above the normal minimum of 42F. Today's Observations: 7 A.M. Weather: Overcast stratocumulus Temperature: 47F; Dew Point: 41F; Wind: SW at 19G37 kts, Peak wind: 47 MPH (41 kts) SW at 6:59 A.M. Sea-level pressure: 30.07 ins. Hg, rising rapily Visibility: 50 miles, except 35 WSW-NW due to fog 6-hr Max temp: 60F 6-hr Min temp: 46F BHO SA 1155 E30 OVC 50 813/47/41/2319G37/897/ DSNT FG VSBY 35 WSW-NW PRESRR PK WND 2341/59/ 8/4// 53050 10060 20046 10 A.M. Weather: Overcast stratocumulus Temperature: 49F; Dew Point: 41F; Wind: SW at 23G32 kts, Peak wind: 51 MPH (44 kts) SW at 9:08 A.M. Sea-level pressure: 29.02 ins. Hg, falling then rising Visibility: 50 miles, except 35 WSW-NW due to fog 3-hr Precip: 0.00 ins. BHO SA 1455 E30 OVC 50 827/49/41/2423G32/902/ DSNT FG VSBY 35 WSW-NW PK WND 2344/08/ 8/4// 51014 1 P.M. Weather: Broken stratocumulus, overcast nimbostratus, very light rain Temperature: 50F; Dew Point: 42F; Wind: SW at 21G33 kts, Peak wind: 53 MPH (46 kts) W at 11:45 A.M. Sea-level pressure: 29.04 ins. Hg, rising steadily Visibility: 35 miles, distant fog 6-hr Max temp: 51F 6-hr Min temp: 46F 6-hr Precip: Trace BHO SA 1755 E30 BKN 60 OVC 35 834/50/42/2321G33/904/ DSNT FG ALQDS R-CTD PCPN VRY LGT PK WND 2646/1645/ 8/42/ 600// 53007 10051 20046 SUMMARY FOR WEDNESDAY, OCTOBER 16, 2019 TEMPERATURE (DEGREES F) MAX.....61   NORMAL.....60 MIN.....45   NORMAL.....43 MEAN....53   NORMAL.....51 DEPARTURE FROM 30-YEAR NORMAL.....................+2 TOTAL DEPARTURE FOR THE MONTH.....................+3 [ 0.0 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............12  DEPARTURE.........-2 TOTAL HEATING UNITS FOR THE MONTH..............171  DEPARTURE.........-7 TOTAL HEATING UNITS FOR THE SEASON.............264  DEPARTURE........-56 TOTAL HEATING UNITS LAST SEASON TO DATE........219  DEPARTURE........+45 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY................0  DEPARTURE..........0 TOTAL COOLING UNITS FOR THE MONTH................2  DEPARTURE.........-2 TOTAL COOLING UNITS FOR THE SEASON.............682  DEPARTURE........+81 TOTAL COOLING UNITS LAST SEASON TO DATE........874  DEPARTURE.......-192 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................58 ESE AT 10:55 P.M.                    AERO.........................58 ESE AT 10:59 P.M.                    ASOS.........................57 ESE AT 11:16 P.M.                    DAVIS........................58 ESE AT 10:54 P.M. RMY N/A FASTEST MILE FOR YESTERDAY......................46 ESE AT 10:58 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................43 E   AT 10:58 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................47 E   AT 10:57 P.M. AVERAGE WIND SPEED AND DIRECTION................15.3 ESE                    ASOS.........................14.5                      DAVIS........................15.3 SE [128 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.96  DEPARTURE......+1.81                          ASOS..............2.12 TOTAL PRECIPITATION FOR THE MONTH..........4.62  DEPARTURE......+2.25                          ASOS..............4.88 TOTAL PRECIPITATION FOR THE YEAR..........43.04  DEPARTURE......+1.58                          ASOS.............43.11 PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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 10/01  67/52/60/+3/0.06/.../..               28 SW  AERO 25 SSW RMY 29 10/02  74/49/62/+5/0.42/.../..               30 ENE AERO 25 ENE RMY 28 10/03  51/46/49/-7/..../.../..               28 ENE AERO 26 ENE RMY N/A 10/04  59/40/50/-6/..../.../..               38 NNW AERO 38 NNW RMY 38 10/05  58/35/47/-9/0.00/.../..               21 N   AERO 18 SSW RMY N/A 10/06  65/44/55/0/0.00/.../..                36 SSW AERO 35 SSW RMY N/A 10/07  77/57/67/+12/0.12/.../..              47 SSW AERO 46 SSW RMY 49 10/08  60/52/56/+2/T/.../..                  22 NE  AERO 18 NW  RMY N/A 10/09  55/49/52/-2/..../.../..               43 NE  AERO 37 NE  RMY 44 10/10  54/47/51/-3/..../.../.. 41 NE  AERO 37 NE  RMY 42 10/11  52/48/50/-3/..../000/00               41 NE  AERO 39 NE  RMY 41 10/12  52/49/51/-2/..../.../..               39 NE  AERO 37 NE  RMY N/A 10/13  66/48/57/+4/..../.../.. 18 WNW AERO 17 WNW RMY 18 10/14  67/51/59/+7/..../.../..               18 WSW AERO 17 WSW RMY N/A 10/15  61/43/52/0/..../.../..                18 NNW AERO 17 NNW RMY N/A 10/16  61/45/53/+2/..../.../..               58 ESE AERO 58 ESE RMY N/A 10/17 The low since midnight is 46F, normal daily minimum is 42F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 17 HIGH 86F IN 1947 LOW 25F IN 1886 PRECIP 1.87 INCHES IN 1989 SNOWFALL TRACE IN 1970 PEAK GUST 55 MPH NE IN 1964 RECORDS FOR OCTOBER 18 HIGH 82F IN 1908 LOW 26F IN 1939 PRECIP 2.79 INCHES IN 1975 SNOWFALL 3.0 INCHES IN 2009 PEAK GUST 66 MPH S IN 1967 TODAY'S REPORT PREPARED BY: Benjamin Turner