BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, OCTOBER 14, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME A CRYSTAL CLEAR DAY FOLLOWING SOME MUCH-NEEDED RAINFALL.... Yesterday was the first time in a while that we've had a good rain storm! The total for the whole event was 1.74 inches, with the majority of it falling yesterday. This evens out our monthly departure, but the annual departure of -4.69 inches still looms. Today we've had mostly clear skies, with a visibility of 80 miles at the 1 P.M. observation. Wind is about 15 mph on average from the west, with a max gust of 22 mph so far. Dew points are in the mid 40's, and the afternoon humidity is 44%. The high so far today is 66, 5 degrees above the daily normal of 61F. The low since midnight is 47F, which is 4 degrees above the normal low of 43F. PRELIMINARY STATS FOR SEPTEMBER 2020 TEMPERATURE, Deg. F Avg. Max. 73.2 [+1.6] Avg. Min. 54.9 [+0.3] Mean      64.1 [+1.0] 24-hour corrected mean: 63.6 Max. for month: 82F on the 8th Min. for month: 39F on the 22nd HEATING DEGREE DAYS Total heating units:    95 [-22] Total for the season:   98 [-44] Total for last season:  93 COOLING DEGREE DAYS Total cooling units:     73  [+13] Total for the season:   830  [+233] Total for last season:  680 PRECIPITATION, Inches Total: 1.61 [-2.45] Greatest in 24 hrs: 1.02 ins. on 29th-30th WIND, mph Avg. uncorrected wind speed: 10.6 mph Avg. corrected wind speed:   11.1 mph Prevailing wind direction:   S [20%] Peak gust and direction:     71 S on the 30th SUNSHINE: Campbell-Stokes card minutes: 12150 minutes of a possible 21582 or 56% Astronomical total minutes: 12593 minutes of a possible 22403 or 56% Today's Observations: 7 A.M. Weather: Clear Temperature: 49F; Dew Point: 48F; Relative Humidity: 98% Wind: WNW at 10G17 kts Sea-level pressure: 29.86 ins. Hg: rising steadily Visibility: 65 miles, fog 6-hr Max temp: 49F 6-hr Min temp: 47F 24-hr Precip: 1.42 ins. BHO SA 1155 CLR 65 112/49/48/3010G17/986/ 70142 53020 10049 20047 10 A.M. Weather: Clear Temperature: 58F; Dew Point: 49F; Relative Humidity: 72% Wind: WNW at 8 kts Sea-level pressure: 29.90 ins. Hg: rising steadily Visibility: 75 miles 3-hr Precip: 0.00 ins. BHO SA 1455 CLR 75 125/58/49/3008/990/ 51013 1 P.M. Weather: Clear, few distant cumulus Temperature: 65F; Dew Point: 43F; Relative Humidity: 44% Wind: W at 9 kts Sea-level pressure: 29.90 ins. Hg: rising steadily Visibility: 80 miles 6-hr Max temp: 49F 6-hr Min temp: 66F 6-hr Precip: 0.00 BHO SA 1755 CLR 80 126/65/43/2709/990/ FEW CU DSNT ALQDS/ 8/100 50001 10066 20049 SUMMARY FOR TUESDAY, OCTOBER 13, 2020 TEMPERATURE (DEGREES F) MAX.....57   NORMAL.....61 MIN.....49   NORMAL.....44 MEAN....53   NORMAL.....53 DEPARTURE FROM 30-YEAR NORMAL................ 0 TOTAL DEPARTURE FOR THE MONTH................+22 [+1.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY.............12  DEPARTURE..... -1 TOTAL HEATING UNITS FOR THE MONTH............111  DEPARTURE.....-27 TOTAL HEATING UNITS FOR THE SEASON...........209  DEPARTURE.....-71 TOTAL HEATING UNITS LAST SEASON TO DATE......233  DEPARTURE.....-24 COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY............. 0  DEPARTURE...... 0                   TOTAL COOLING UNITS FOR THE MONTH............. 1  DEPARTURE..... -3 TOTAL COOLING UNITS FOR THE SEASON...........831  DEPARTURE....+230 TOTAL COOLING UNITS LAST SEASON TO DATE......682  DEPARTURE....+149 PEAK WIND GUST FOR YESTERDAY (MPH)                    420C/Official...............32 E   AT   7:10 A.M.                      AEROVANE....................33 E   AT   6:34 A.M.                    ASOS........................34 ENE AT   7:10 A.M.                    DAVIS #1....................33 E   AT   7:10 A.M.                    DAVIS #2....................29 E   AT   7:10 A.M.                    RMY N/A  MERLIN N/A FASTEST MILE FOR YESTERDAY.....................23 ENE AT   5:46 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................23 E   AT   7:14 A.M. MAXIMUM 2-MINUTE DAVIS #1 AVERAGE..............23 E   AT   6:02 A.M. MAXIMUM 2-MINUTE DAVIS #2 AVERAGE..............23 E   AT   6:02 A.M. AVERAGE WIND SPEED AND DIRECTION.............14.6 ENE (351 total miles)                            ASOS......................15.1                    DAVIS #1..................15.0 ENE [060 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.90  DEPARTURE....+1.27                          ASOS..............1.91 TOTAL PRECIPITATION FOR THE MONTH..........1.90  DEPARTURE....-0.03                          ASOS..............1.91 TOTAL PRECIPITATION FOR THE YEAR..........36.32  DEPARTURE....-4.69                          ASOS.............37.12 PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 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 09/01  76/59/68/0/0.00/698/88              22 SSE  AERO 21 SE   RMY 20 09/02  69/59/64/-4/0.18/102/13             23 SSE  AERO 23 SSE  RMY 24 09/03  75/66/71/+4/0.04/000/00             22 SSW  AERO 21 SSW  RMY N/A 09/04  82/62/72/+5/0.00/763/98             26 WNW  AERO 26 WNW  RMY 25 09/05  76/55/66/-1/0.00/760/98             25 W    AERO 25 W    RMY 24 09/06  78/58/68/+1/0.00/356/46             24 W    AERO 24 W    RMY N/A 09/07  79/61/70/+4/0.00/632/82             27 SSE  AERO 30 SSE  RMY 28 09/08  82/61/72/+6/0.00/545/71             17 S    AERO 16 S    RMY 17 09/09  80/62/71/+5/0.00/214/28             16 S    AERO 15 S    RMY 16 09/10  81/69/75/+10/0.28/015/02            21 SSW  AERO 21 SSW  RMY N/A 09/11  72/55/64/-1/0.01/152/20             25 N    AERO 25 N    RMY N/A 09/12  68/51/60/-5/0.00/666/88             21 ENE  AERO 21 ENE  RMY 21 09/13  74/53/64/0/0.00/611/81              26 SSW  AERO 26 SSW  RMY 26 09/14  74/50/62/-2/0.00/511/68             29 NNW  AERO 33 NNW  RMY 30 09/15  64/44/54/-10/0.00/583/78            18 S    AERO 18 S    RMY N/A 09/16  72/49/61/-2/0.00/603/81             31 SSW  AERO 31 SSW  RMY 31 09/17  76/57/67/+4/0.00/453/61             26 WSW  AERO 28 W    RMY N/A 09/18  64/48/56/-6/0.00/163/22             28 NE   AERO 30 NNW  RMY N/A 09/19  59/42/51/-11/0.00/722/98            23 N    AERO 23 N    RMY N/A 09/20  58/40/49/-13/0.00/602/82            25 NE   AERO 25 NE   RMY 27 09/21  61/41/51/-10/0.00/694/95            29 NE   AERO 27 NE   RMY 29 09/22  63/39/51/-10/0.00/022/03            28 NNW  AERO 30 NNW  RMY 29 09/23  78/50/64/+4/0.00/617/85             31 NW   AERO 32 WNW  RMY 32 09/24  76/57/67/+7/0.00/347/48             20 SW   AERO 18 WSW  RMY 19 09/25  77/57/67/+7/0.00/655/91             18 ENE  AERO 18 WSW  RMY N/A 09/26  77/57/67/+8/0.00/516/72             21 S    AERO 21 S    RMY 21 09/27  79/64/72/+13/0.01/121/17            24 S    AERO 25 S    RMY 24 09/28  78/64/71/+13/0.07/199/28            24 SSE  AERO 24 S    RMY 25 09/29  76/62/69/+11/0.01/234/33            30 S    AERO 30 S    RMY N/A 09/30  72/56/64/+6/1.01/395/56             71 S    AERO 88 S    RMY N/A 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    RMT N/A 10/14  The low since midnight is 47F, the daily normal low is 43F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR OCTOBER 14 HIGH 79F IN 2000 LOW 28F IN 1958 PRECIP 2.69 INCHES IN 1990 SNOWFALL 2.0 INCHES IN 1913 PEAK GUST 63e W IN 1976 RECORDS FOR OCTOBER 15 HIGH 83F IN 1897 LOW 29F IN 1887,1937 PRECIP 4.58 INCHES IN 2005 SNOWFALL TRACE IN 1961,1972 PEAK GUST 69 MPH W IN 2003 TODAY'S REPORT PREPARED BY: Benjamin Turner