BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA FRIDAY, OCTOBER 23, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME DENSE FOG GIVES WAY TO MOSTLY CLOUDY SKIES... Not the best looking Friday! Thick fog settled into the area yesterday evening thanks to a maritime fog bank that meandered its way onshore. It remained solidly in place into this morning. At its worst, visibility was 1/8 of a mile, even 1/16 at times before finally eroding around 8:30 AM today into overcast skies. This cloud deck slowly thinned into the afternoon allowing for a few splashes of sun to poke through. Skies are currently broken with a maximum visibility of only 30 miles.  Winds have been rather light today, only topping out at 11 MPH with an average of just 4 MPH from the east. The high so far today is 68F, 10 degrees above the daily normal minimum of 58F. The low since midnight is 52F, 12 degrees above the normal low of 40F. These temperatures are normal for late-September! Today's Observations: 7 A.M. Weather: Overcast Stratus, Fog (few thin spots in overcast overhead) Temperature: 55F; Dew Point: 55F; Relative Humidity: 100% Wind: E at 6 kts (wind light) Sea-level pressure: 30.29 ins. Hg: rising, then rising more slowly Visibility: 1/8 mile, fog 6-hr Max temp: 55F 6-hr Min temp: 52F 24-hr Precip: 0.00 ins. BHO SA 1155 E10 OVC 1/8F 259/55/55/0806/029/ FEW THN SPTS IOVC OVHD WND LGT/ 8/6// 51018 10055 20052 10 A.M. Weather: Broken Stratocumulus Temperature: 62; Dew Point: 55F; Relative Humidity: 78% Wind: ESE at 5 kts (wind light) Sea-level pressure: 30.28 ins. Hg: rising, then falling Visibility: 25 miles, thin fog 3-hr Precip: 0.00 ins. BHO SA 1455 E15 BKN 25 253/62/55/1105/028/ THN F ALQDS WND LGT/ 8/400 58006 1 P.M. Weather: Broken Stratocumulus Temperature: 66F; Dew Point: 56F; Relative Humidity: 70% Wind: E at 5 kts (wind light) Sea-level pressure: 30.21 ins. Hg: falling, then falling more rapidly Visibility: 30 miles, hazy 6-hr Max temp: 68F 6-hr Min temp: 55F 6-hr Precip: 0.00 inches BHO SA 1755 E25 BKN 30 229/66/56/0805/021/ HAZY WND LGT/ 8/400 58024 10068 20055 SUMMARY FOR THURSDAY, OCTOBER 22, 2020 TEMPERATURE (DEGREES F) MAX.....70   NORMAL.....58 MIN.....54   NORMAL.....41 MEAN....62   NORMAL.....49 DEPARTURE FROM 30-YEAR NORMAL................+13 TOTAL DEPARTURE FOR THE MONTH................+81 [+3.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY............. 3  DEPARTURE.....-13 TOTAL HEATING UNITS FOR THE MONTH............181  DEPARTURE.....-86 TOTAL HEATING UNITS FOR THE SEASON...........279  DEPARTURE....-130 TOTAL HEATING UNITS LAST SEASON TO DATE......346  DEPARTURE.....-67 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY............. 0  DEPARTURE...... 0                   TOTAL COOLING UNITS FOR THE MONTH............. 1  DEPARTURE..... -4 TOTAL COOLING UNITS FOR THE SEASON...........831  DEPARTURE....+229 TOTAL COOLING UNITS LAST SEASON TO DATE......682  DEPARTURE....+149 PEAK WIND GUST FOR YESTERDAY (MPH)                    420C/Official...............18 SSW AT  12:09 A.M.                      AEROVANE (south tower)......17 SSW AT  12:00 A.M.                    ASOS........................19 SSW AT  12:21 A.M                    DAVIS #1....................18 SSW AT  12:02 A.M                    DAVIS #2 (south tower)......18 SW  AT  12:05 A.M                    RMY.........................N/A                    MERLIN......................N/A FASTEST MILE FOR YESTERDAY.....................13 SSW AT  12:06 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................14 SSW AT  12:19 A.M MAXIMUM 2-MINUTE DAVIS #1 AVERAGE..............13 SW  AT  12:00 A.M MAXIMUM 2-MINUTE DAVIS #2 AVERAGE..............14 SSW AT  12:00 A.M AVERAGE WIND SPEED AND DIRECTION..............7.4 E  [178 total miles]                            ASOS.......................7.9                    DAVIS #1...................8.1 E  [96 deg.]                    DAVIS #2...................8.1 E  [82 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE....-0.16                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........4.20  DEPARTURE....+0.91                          ASOS..............4.18 TOTAL PRECIPITATION FOR THE YEAR..........38.62  DEPARTURE....-3.75                          ASOS.............39.39 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  75/56/66/+9/0.00/.../..             28 SW   AERO 28 SW   RMY N/A 10/02  63/49/56/-1/0.02/.../..             20 NW   AERO 21 NW   RMY 20 10/03  65/45/55/-1/0.00/.../..             19 WNW  AERO 19 WNW  RMY 19 10/04  65/45/55/-1/0.00/.../..             17 ESE  AERO 18 ESE  RMY 18 10/05  62/52/57/+1/0.00/.../..             17 ENE  AERO 17 ENE  RMY N/A 10/06  69/51/60/+5/0.00/.../..             28 S    AERO 28 S    RMY 29 10/07  73/50/62/+7/0.14/.../..             76 W    AERO 74 W    RMY 70  TSTM 10/08  61/42/52/-2/0.00/.../..             41 W    AERO 41 W    RMY N/A 10/09  60/37/49/-5/0.00/.../..             25 SSW  AERO 28 SSW  RMY N/A 10/10  75/52/64/+10/0.00/.../..            40 SSW  AERO 40 SSW  RMY 38 10/11  64/47/56/+3/0.00/.../..             32 NNW  AERO 35 NNW  RMY N/A 10/12  52/48/50/-3/T/.../..                28 E    AERO 27 E    RMY N/A 10/13  57/49/53/0/1.74/.../..              32 E    AERO 33 E    RMY N/A 10/14  67/47/57/+5/0.00/.../..             23 WNW  AERO 25 WNW  RMY N/A 10/15  71/50/61/+9/0.00/.../..             43 S    AERO 46 S    RMY 42 10/16  68/48/58/+7/..../.../..             28 S    AERO 30 S    RMY N/A 10/17  56/39/48/-3/..../.../..             35 WNW  AERO 40 WNW  RMY 37 10/18  60/46/53/+2/0.00/.../..             20 ESE  AERO 21 ESE  RMY 20 10/19  61/46/54/+4/0.00/.../..             16 ESE  AERO 16 SSE  RMY N/A 10/20  66/49/58/+8/0.00/.../..             22 S    AERO 22 S    RMY 22 10/21  71/56/64/+14/0.06/.../..            26 SSW  AERO 26 SSW  RMY 26 10/22  70/54/62/+13/0.00/.../..            18 SSW  AERO 17 SSW  RMY N/A 10/23 The low since midnight is 52, the daily normal low is 40F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR OCTOBER 23 HIGH 82F IN 1947 LOW 24F IN 1969 PRECIP 3.66 INCHES IN 2014 SNOWFALL 3.0 INCHES IN 1891 PEAK GUST 78e MPH NW IN 1941 RECORDS FOR OCTOBER 24 HIGH 79F IN 1963 LOW 22F IN 1969 PRECIP 2.96 INCHES IN 1890 SNOWFALL 1.8 INCHES IN 1960 PEAK GUST 70 MPH SE IN 1959 TODAY'S REPORT PREPARED BY: Andrew Swanson