BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, DECEMBER 27, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME MILDER TODAY, BUT CLOUDS DOMINATE... We can add another day of non-measurable precipitation to our records, clocking in with 9 consecutive days thus far! Overnight precipitation left us with only a trace. This appears to be our second longest dry stretch of the year (January 10th-19th at 10 days is our lengthiest). It appears we may break that heading into the weekend. Clouds and haze have dominated throughout the day. It has been accompanied with limited visibility, though with winds from the south, milder and above average temperatures have been observed. The high so far today is 47F, which is 11 degrees above the daily normal maximum of 36F. The low since midnight is 31F, which is 11 degrees above the normal minimum of 20F. Today's Observations: 7 A.M. Weather: Overcast Stratus Temperature: 33F; Dew Point: 30F; Wind: S at 14G19 kts Sea-level pressure: 30.31 ins. Hg, falling, then falling more rapidly Visibility: 45 miles, hazy 6-hr Max temp: 33F 6-hr Min temp: 31F 24-hr Precip:  Trace 24-hr Snowfall: 0.0 ins. Snow Depth: Trace BHO SA 1155 E035 OVC 45 265/33/30/1714G19/031/ HAZY/ 8/6// 58012 10033 20031 10 A.M. Weather: Overcast Stratus, Few lower Stratocumulus Temperature: 38F; Dew Point: 35F; Wind: S at 13G19 kts, Sea-level pressure: 30.27 ins. Hg, falling, then falling more rapidly Visibility: 40 miles, hazy 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 E020 OVC 40 251/38/35/1813G19/027/ FEW LWR SC ALQDS HAZY/ 8/6// 58014 1 P.M. Weather: Broken Stratocumulus, Overcast Altocumulus, sun dimly visible Temperature: 46F; Dew Point: 40F; Wind: SSW at 18G23 kts Peak Wind: 33 MPH (29 kts) SSW at 11:11 AM Sea-level pressure: 30.13 ins. Hg, falling, then falling more slowly Visibility: 35 miles, hazy 6-hr Max temp: 47F 6-hr Min temp: 33F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. Snow Depth: Trace BHO SA 1755 E020 BKN E090 OVC 35 203/46/40/2018G23/013/ PK WND 2028/1611 HAZY SUN DMLY VSBL/ 8/49/ 56048 10047 20033 SUMMARY FOR THURSDAY, DECEMBER 26, 2019 TEMPERATURE (DEGREES F) MAX.....39   NORMAL.....36 MIN.....29   NORMAL.....20 MEAN....34   NORMAL.....28 DEPARTURE FROM 30-YEAR NORMAL......................+6 TOTAL DEPARTURE FOR THE MONTH.....................-19 [-0.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............31  DEPARTURE........-6 TOTAL HEATING UNITS FOR THE MONTH..............872  DEPARTURE.......+17 TOTAL HEATING UNITS FOR THE SEASON............2109  DEPARTURE........-8 TOTAL HEATING UNITS LAST SEASON TO DATE.......2148  DEPARTURE.......-39 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................22 ENE AT  11:36 A.M.                      AERO.........................20 ENE AT  11:47 A.M.                      ASOS.........................24 NE  AT  11:36 A.M.                    DAVIS........................23 ENE AT  11:32 A.M. RMY 22 FASTEST MILE FOR YESTERDAY......................17 ENE AT  11:51 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................17 ENE AT  12:30 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................18 ENE AT  11:44 A.M. AVERAGE WIND SPEED AND DIRECTION.............. 7.1 ENE                                      ASOS....................... 7.7                    DAVIS...................... 7.9 ENE [069 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..........6.06  DEPARTURE......+1.87                          ASOS..............6.51 TOTAL PRECIPITATION FOR THE YEAR..........55.14  DEPARTURE......+2.41                          ASOS.............55.91 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.5 TOTAL SNOWFALL FOR THE MONTH...............19.1  DEPARTURE.......+8.4 TOTAL SNOWFALL FOR THE SEASON..............19.2  DEPARTURE.......+5.9 PRELIMINARY CLIMATE SUMMARY FOR DECEMBER CALENDAR DAY DATA DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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 12/01  32/16/24/-13/..../5.8/011/02           33 ENE AERO 32 ENE RMY N/A 12/02  37/25/31/-5/..../2.7/000/00            52 NE  AERO 47 NE  RMY 53 12/03  30/23/27/-9/..../4.6/000/00            32 N   AERO 35 N   RMY 36 12/04  34/22/28/-7/..../0.0/000/00            23 WNW AERO 23 NNW RMY N/A 12/05  41/26/34/-1/..../0.0/343/62            33 NW  AERO 35 NW  RMY 37 12/06  33/23/28/-7/0.02/0.1/000/00            25 NW  AERO 23 NW  RMY 29 12/07  31/18/25/-9/0.00/0.0/519/94            25 NW  AERO 23 NW  RMY N/A 12/08  36/15/26/-8/0.00/0.0/.../..            31 SSW AERO 32 SSW RMY N/A 12/09  57/36/47/+13/..../0.0/.../..           53 S   AERO 52 S   RMY 54 12/10  58/37/48/+15/..../0.0/.../..           35 SW  AERO 39 SW  RMY N/A 12/11  36/23/30/-3/..../3.0/.../..            25 NW  AERO 25 NW  RMY N/A 12/12  29/17/23/-10/..../1.8/.../..           29 W   AERO 30 W   RMY 25 12/13  46/22/34/+2/..../0.0/.../..            25 SSE AERO 25 SSE RMY N/A 12/14  58/46/52/+20/..../0.0/.../..           45 S   AERO 41 S   RMY N/A 12/15  48/28/38/+6/0.00/0.0/.../..            53 W   AERO 53 W   RMY 50 12/16  30/25/28/-3/0.00/0.0/.../..            36 W   AERO 36 W   RMY N/A 12/17  35/23/29/-2/..../1.0/.../..            22 NNW AERO 21 NE  RMY 23 12/18  33/18/26/-5/.../0.0/.../..             44 WNW AERO 45 WNW RMY N/A 12/19  20/9/15/-15/.../0.0/.../..             51 W   AERO 47 W   RMY N/A 12/20  29/11/20/-10/0.00/0.0/..../..          32 W   AERO 30 W   RMY 29 12/21  31/16/24/-6/0.00/0.0/..../..           16 SSE AERO 15 SSE RMY N/A 12/22  40/26/33/+4/0.00/0.0/..../..           23 SW  AERO 21 SW  RMY 23 12/23  54/33/44/+15/0.00/0.0/..../..          30 WSW AERO 30 SW  RMY 30 12/24  42/29/36/+7/0.00/0.0/..../..           30 NW  AERO 27 NW  RMY 30 12/25  42/25/34/+6/0.00/0.0/..../..           16 NNE AERO 16 N   RMY N/A 12/26  39/29/34/+6/0.00/0.0/..../..           22 ENE AERO 20 ENE RMY 22 12/27 The low since midnight is 31F, daily normal minimum is 20F DAILY RECORDS FOR DECEMBER 12/01/19: DAILY RECORD SNOWFALL OF 5.8 INS.,           BREAKS PREVIOUS RECORD OF 2.0 INS. SET IN 1902. DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):   RECORDS FOR DECEMBER 27 HIGH 57 IN 1895,1949 LOW -4 IN 1903 PRECIP 2.43 INS. IN 1969 SNOWFALL 11.2 INS. IN 1947 PEAK GUST 73 S IN 2011 RECORDS FOR DECEMBER 28 HIGH 60 IN 1982 LOW -2 IN 1933 PRECIP 2.16 INS. IN 1967 SNOWFALL 9.5 INS. IN 1967 PEAK GUST 89 MPH SSE IN 1983 TODAY'S REPORT PREPARED BY: Andrew Swanson