BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA WEDNESDAY, SEPTEMBER 9, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME OVERCAST WITH LIMITED VISIBILITY, AND SLIGHTLY ON THE WARMER SIDE.... Today was overcast, with either a smoke layer or haze limiting visibility to 50 miles at 1 P.M. Could this be smoke from the wildfires on the west coast? Wind is coming in from the south, but very light. An average speed of 5 mph and a max gust of 11 mph have been seen so far.   We could really use some rainfall as our precipitation deficit starts to mount. The departure for the year is getting close to 3 inches again, sitting at -2.95 inches as of this morning. The high so far today is 79F, 5 degrees above the daily normal max of 74F. The low since midnight is 62F, which is 5 degrees above the normal low of 57F. PRELIMINARY STATS FOR AUGUST 2020 TEMPERATURE, Deg. F Avg. Max. 82.5 [+3.3] Avg. Min. 64.3 [+2.5] Mean      73.4 [+2.9] 24-hour corrected mean: 72.3 Max. for month: 94F on the 10th Min. for month: 54F on the 31st HEATING DEGREE DAYS Total heating units:     2 [-14] Total for the season:    3 [-22] Total for last season:  12 COOLING DEGREE DAYS Total cooling units:    270  [+84] Total for the season:   757  [+220] Total for last season:  622 PRECIPITATION, Inches Total: 3.74 [-0.29] Greatest in 24 hrs: N/A WIND, mph Avg. uncorrected wind speed: 10.0 mph Avg. corrected wind speed:   10.6 mph Prevailing wind direction:   SSW [12%] Peak gust and direction:     67 SSE on the 4th SUNSHINE: Campbell-Stokes card minutes: 15366 minutes of a possible 24780 or 62% Astronomical total minutes: 15940 minutes of a possible 25709 or 62% Today's Observations: 7 A.M. Weather: Overcast stratus Temperature: 62F; Dew Point: 61F; Relative Humidity: 95% Wind: SSW at 4 kts, wind light and variable Sea-level pressure: 30.30 ins. Hg: rising steadily Visibility: 3 miles, fog 6-hr Max temp: 65F 6-hr Min temp: 62F 24-hr Precip: 0.00 ins. BHO SA 1155 8 OVC 3F 262/62/61/2104/030/ WND L/V/ 8/6// 51016 10065 20062 10 A.M. Weather: Broken altostratus and cirrostratus Temperature: 73F; Dew Point: 62F; Relative Humidity: 68% Wind: SSW at 5 kts, wind light Sea-level pressure: 30.14 ins. Hg: falling then rising Visibility: 25 miles, thin smoke layer in all directions 3-hr Precip: 0.00 ins. BHO SA 1455 180 BKN 250 BKN 25 268/73/62/2105/032/ THN K LYR ALQDS WND LGT/ 8/057 50006 1 P.M. Weather: Overcast cirrus Temperature: 78F; Dew Point: 60F; Relative Humidity: 54% Wind: S at 6 kts, wind light Sea-level pressure: 30.31 ins. Hg: rising, then falling Visibility: 50 miles 6-hr Max temp: 79F 6-hr Min temp: 62F 6-hr Precip: 0.00 ins. BHO SA 1755 250 OVC 50 266/78/60/1706/031/ WND LGT/ 8/007 57002 10079 20062   SUMMARY FOR TUESDAY, SEPTEMBER 8, 2020 TEMPERATURE (DEGREES F) MAX.....82   NORMAL.....75 MIN.....61   NORMAL.....57 MEAN....72   NORMAL.....66 DEPARTURE FROM 30-YEAR NORMAL................ +6 TOTAL DEPARTURE FOR THE MONTH................ +15 [+1.7 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY............  7  DEPARTURE......+4                     TOTAL COOLING UNITS FOR THE MONTH............ 32  DEPARTURE......+5 TOTAL COOLING UNITS FOR THE SEASON...........789  DEPARTURE....+225 TOTAL COOLING UNITS LAST SEASON TO DATE......634  DEPARTURE....+155 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................17 S   AT  7:55 P.M.                      AERO.........................16 S   AT  8:00 P.M.                    ASOS.........................17 S   AT  7:58 P.M.                    DAVIS........................18 S   AT  8:03 P.M.                    RMY 16  MERLIN 17 FASTEST MILE FOR YESTERDAY......................12 S   AT  7:56 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................13 S   AT  8:58 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................13 S   AT  8:03 P.M. AVERAGE WIND SPEED AND DIRECTION...............7.4 S                             ASOS........................8.0                    DAVIS.......................7.2 SSW [208 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE....-0.12                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........0.22  DEPARTURE....-0.74                          ASOS..............0.24 TOTAL PRECIPITATION FOR THE YEAR..........33.03  DEPARTURE....-2.95                          ASOS.............33.82 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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 08/01  87/66/77/+5/0.00/866/100            18 S    AERO 21 S    RMY 19 08/02  85/69/77/+5/0.02/320/37             36 S    AERO 37 S    RMY 38 08/03  91/75/83/+11/0.00/715/83            36 WSW  AERO 38 SW   RMY 36 08/04  83/71/77/5/0.21/094/11              67 SSE  AERO 71 S    RMY 70 08/05  90/68/79/+7/0.00/668/78             28 SW   AERO 30 SW   RMY 29 08/06  84/65/75/3/0.00/701/82   20 W    AERO 17 W    RMY 19 08/07  79/65/72/0/T/136/16                 16 NE   AERO 16 NE   RMY N/A 08/08  83/64/74/+2/0.00/612/72             20 S    AERO 20 S    RMY 19 08/09  90/65/78/+6/0.00/661/78             26 SSW  AERO 26 SSW  RMY 26 08/10  94/69/82/+11/0.00/727/86            22 W    AERO 20 W    RMY 20 08/11  92/72/82/+11/0.00/708/84            31 SSW  AERO 35 SSW  RMY 31  TSTM 08/12  93/74/84/+13/0.00/647/77            22 SSW  AERO 22 SW   RMY 19 08/13  88/71/80/+9/0.00/528/63             18 ENE  AERO 18 NE   RMY 18 08/14  82/67/75/+4/0.00/618/74             23 ENE  AERO 23 ENE RMY N/A 08/15  67/62/65/-6/T/000/00                33 NNE  AERO 32 NNE  RMY N/A 08/16  69/62/66/-5/..../000/00             26 ENE  AERO 28 ENE  RMY 26 08/17  73/59/66/-5/..../339/41             25 NE   AERO 24 NE   RMY N/A 08/18  84/63/74/+3/..../784/95             23 W    AERO 23 W    RMY 24 08/19  81/59/70/0/0.03/526/64              26 W    AERO 28 W    RMY 27 08/20  80/56/68/-2/0.00/804/98             22 W    AERO 21 W    RMY 22 08/21  88/61/75/+5/0.00/719/88             28 SW   AERO 26 SW   RMY 28 08/22  85/66/76/+6/0.26/521/64             18 NNE  AERO 16 S    RMY 16 08/23  89/63/76/+6/2.21/552/68             60 WNW  AERO 53 WNW  RMY 58  TSTM HAIL 08/24  87/67/77/+7/0.00/493/61             18 S    AERO 18 S    RMY 19  TSTM 08/25  86/65/76/+7/0.01/492/61             35 NNW  AERO 37 NNW  RMY 35 08/26  74/56/65/-4/0.00/780/97             29 NW   AERO 32 NW   RMY N/A 08/27  68/57/63/-6/0.33/008/01             18 SSE  AERO 20 SSE  RMY 20  TSTM 08/28  80/59/70/+1/0.00/559/70             20 W    AERO 20 W    RMY N/A 08/29  74/65/70/+1/0.06/000/00             32 W    AERO 32 W    RMY N/A 08/30  75/57/66/-2/0.00/793/100            36 W    AERO 36 W    RMY N/A 08/31  75/54/65/-3/0.00/569/72             20 S    AERO 20 S    RMY 20 DAILY RECORDS FOR AUGUST 2020 8/23/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 89F,          BREAKS PREVIOUS RECORD of 88F SET IN 1918, 1947, 1949, 1996 8/23/20: DAILY RECORD PRECIPITATION OF 2.21 INS,          BREAKS PREVIOUS RECORD OF 2.09 INS SET IN 2010 8/23/20: DAILY RECORD PEAK WIND GUST OF 60 MPH,          TIES PREVIOUS RECORD OF 60 MPH SET IN 1940 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/.../..              22 SSE  AERO 21 SE   RMY 20 09/02  69/59/64/-4/.../.../..              23 SSE  AERO 23 SSE  RMY 24 09/03  75/66/71/+4/.../.../..              22 SSW  AERO 21 SSW  RMY n/a 09/04  82/62/72/+5/0.00/.../..             26 WNW  AERO 26 WNW  RMY 25 09/05  76/55/66/-1/0.00/.../..             25 W    AERO 25 W    RMY 24 09/06  78/58/68/+1/0.00/.../..             24 W    AERO 24 W    RMY N/A 09/07  79/61/70/+4/0.00/.../..             27 SSE  AERO 30 SSE  RMY 28 09/08  82/61/72/+6/0.00/.../..             17 S    AERO 16 S    RMY 17 09/09 The low since midnight is 62F, the daily normal low is 57F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR SEPTEMBER 9 HIGH 92F IN 2015 LOW 41F IN 1938 PRECIP 1.97 INCHES IN 1969 PEAK GUST 52 MPH WNW IN 1969, NW IN 1978 RECORDS FOR SEPTEMBER 10 HIGH 90F IN 1931,1989 LOW 41F IN 1956 PRECIP 5.60 INCHES IN 1999 (DAILY RECORD FOR SEPTEMBER) PEAK GUST 48 MPH NW IN 1972 TODAY'S REPORT PREPARED BY: Benjamin Turner