BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY WEDNESDAY, JANUARY 8, 2020 ALL TIMES ARE IN EASTERN STANDARD TIME FAIR WEATHER FOLLOWING LAST NIGHT'S SNOW WITH SOME ADDITIONAL SQUALLS IN THE AFTERNOON.... Last night's snow left 0.7 inches on the snow boards, with some squalls leaving a trace between 3 P.M. and 4 P.M. Skies became cloudier, and the wind picked up from the west as the day went on. The max gust so far today is 38 mph. Visibility was limited this morning due to a distant fog, but increased to 65 miles by the 1 P.M. observation. The high temperature so far today is 38F, 4 degrees above the daily normal maximum of 34F. The low since midnight is 26F, which is 8 degrees above the normal low of 18F. PRELIMINARY STATS FOR NOVEMBER 2019 TEMPERATURE, Deg. F Avg. Max. 39.1 [0.0] Avg. Min. 25.0 [+1.4] Mean      32.1 [+0.8] 24-hour corrected mean: 32.3 Max. for month: 58F on the 10th Min. for month: 9F on the 19th HEATING DEGREE DAYS Total heating units:   1014 [-29] Total for the season:  2251 [-54] Total for last season: 2295 PRECIPITATION, Inches Total: 7.81 [+2.92] Greatest in 24 hrs: N/A SNOWFALL, Inches Total: 19.9 [+6.5] Greatest in 24 hrs: 5.8 ins. on the 1st-2nd WIND, mph Avg. uncorrected wind speed: 13.2 mph Avg. corrected wind speed:   13.6 mph Prevailing wind direction:   W [20%] Peak gust and direction:     53 S,W on the 9th, 15th SUNSHINE: Campbell-Stokes card minutes: 6168 minutes of possible 16470 or 37% Astronomical total minutes: 6368 minutes of possible 17000 or 37% Today's Observations: 7 A.M. Weather: Scattered altocumulus, few stratus fractus Temperature: 26F; Dew Point: 24F; Wind: W at 6 kts, Wind: Light Sea-level pressure: 29.80 ins. Hg, falling steadily Visibility: 30 miles, distant fog 6-hr Max temp: 31F 6-hr Min temp: 26F 24-hr Precip:  0.04 ins. 24-hr Snowfall: 0.7 ins. BHO SA 1155 70 SCT 30 090/26/24/2606/980/ FEW STFA DSNT FG ALQDS WND LGT/ 8/770 4/001 70004 58003 10031 20026 10 A.M. Weather: Broken altocumulus, few cumulus NW-SSW Temperature: 32F; Dew Point: 29F; Wind: SW at 8 kts Sea-level pressure: 29.81 ins. Hg, rising, then more slowly Visibility: 30 miles, distant fog 3-hr Precip:  0.00 ins. 3-hr Snowfall: 0.0 ins. BHO SA 1455 E70 BKN 30 094/32/29/2208/981/ FEW CU NW-SSW DSNT FG ALQDS/ 8/170 51004 1 P.M. Weather: Scattered cumulus, broken cirrostratus Temperature: 38F; Dew Point: 25F; Wind: W at 12G20 kts Sea-level pressure: 29.75 ins. Hg, falling, then more rapidly Visibility: 65 miles 6-hr Max temp: 38F 6-hr Min temp: 26F 6-hr Precip:  0.00 ins. 6-hr Snowfall: 0.0 ins. BHO SA 1755 40 SCT E250 BKN 65 073/38/25/2812G20/975/ 8/105 56021 10038 20026 SUMMARY FOR TUESDAY, JANUARY 7, 2020 TEMPERATURE (DEGREES F) MAX.....38   NORMAL.....34 MIN.....29   NORMAL.....18 MEAN....34   NORMAL.....26 DEPARTURE FROM 30-YEAR NORMAL..................... +8 TOTAL DEPARTURE FOR THE MONTH.....................+64 [+8.9 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY...............31  DEPARTURE....... -8 TOTAL HEATING UNITS FOR THE MONTH..............207  DEPARTURE.......-64 TOTAL HEATING UNITS FOR THE SEASON............2458  DEPARTURE......-117 TOTAL HEATING UNITS LAST SEASON TO DATE.......2518  DEPARTURE.......-60 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................30 WSW AT  3:14 A.M.                      AERO.........................28 WSW AT  3:17 A.M.                      ASOS.........................30 W   AT  3:14 A.M.                    DAVIS........................30 W   AT  3:14 A.M. RMY N/A FASTEST MILE FOR YESTERDAY......................18 W   AT  3:10 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................21 W   AT  3:15 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................23 W   AT  3:14 A.M. AVERAGE WIND SPEED AND DIRECTION...............9.1 SW                                    ASOS........................9.6                    DAVIS......................10.1 SW [223 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.04  DEPARTURE......-0.10                          ASOS..............0.04 TOTAL PRECIPITATION FOR THE MONTH..........0.34  DEPARTURE......-0.66                          ASOS..............0.34 TOTAL PRECIPITATION FOR THE YEAR...........0.34  DEPARTURE......-0.66                          ASOS..............0.34 SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.7  DEPARTURE.......+0.2 TOTAL SNOWFALL FOR THE MONTH................1.2  DEPARTURE.......-2.7 TOTAL SNOWFALL FOR THE SEASON..............21.2  DEPARTURE.......+1.3 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/-8/0.00/0.0/402/73            31 SSW AERO 32 SSW RMY N/A 12/09  57/36/47/+13/..../0.0/000/00           53 S   AERO 52 S   RMY 54 12/10  58/37/48/+15/..../0.0/044/08           35 SW  AERO 39 SW  RMY N/A 12/11  36/23/30/-3/..../3.0/236/43            25 NW  AERO 25 NW  RMY N/A 12/12  29/17/23/-10/..../1.8/488/89           29 W   AERO 30 W   RMY 25 12/13  46/22/34/+2/..../0.0/000/00            25 SSE AERO 25 SSE RMY N/A 12/14  58/46/52/+20/..../0.0/000/00           45 S   AERO 41 S   RMY N/A 12/15  48/28/38/+6/0.00/0.0/284/52            53 W   AERO 53 W   RMY 50 12/16  30/25/28/-3/0.00/0.0/000/00            36 W   AERO 36 W   RMY N/A 12/17  35/23/29/-2/..../1.0/000/00            22 NNW AERO 21 NE  RMY 23 12/18  33/18/26/-5/.../0.0/229/42             44 WNW AERO 45 WNW RMY N/A 12/19  20/9/15/-15/.../0.0/534/98             51 W   AERO 47 W   RMY N/A 12/20  29/11/20/-10/0.00/0.0/540/99           32 W   AERO 30 W   RMY 29 12/21  31/16/24/-6/0.00/0.0/163/30            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  47/31/39/+11/0.00/0.0/..../..          32 SSW AERO 30 SSW RMY 34 12/28  47/30/39/+11/0.00/0.0/..../..          23 W   AERO 22 W   RMY N/A 12/29  42/28/35/+8/..../0.0/..../..           22 WNW AERO 21 WNW RMY 23 12/30  36/32/34/+7/..../0.8/..../..           40 E   AERO 37 E   RMY 37 12/31  40/32/36/+9/..../0.0/..../..           35 E   AERO 32 E   RMY N/A     PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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 01/01  38/30/34/+7/..../0.0/..../..           39 W   AERO 38 W   RMY 41 01/02  46/29/38/+11/0.00/0.0/..../..          28 SW  AERO 28 SW  RMY 30 01/03  46/40/43/+17/0.00/0.0/..../..          21 SW  AERO 18 SW  RMY N/A 01/04  46/36/41/+15/..../0.0/..../..          16 NNW AERO 16 NNW RMY N/A 01/05  36/24/30/+4/..../0.5/..../..           43 NW  AERO 46 NW  RMY 43 01/06  33/23/28/+2/T/T/..../..                26 W   AERO 21 W   RMY N/A 01/07  38/29/34/+8/..../0.4/.../..            30 WSW AERO 28 WSW RMY N/A 01/08  The low since midnight is 26F, daily normal minimum is 9F 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 JANUARY 8 HIGH 65F IN 2008 LOW -8F IN 1968 PRECIP 1.70 INS. IN 1958,1979 SNOWFALL 12.5 INS. IN 1996 PEAK GUST 77 MPH NNW IN 1958 RECORDS FOR JANUARY 9 HIGH 62F IN 1937 LOW -9F IN 1968 PRECIP 3.00 INS. IN 1956 SNOWFALL 10.0 INS. IN 1904 PEAK GUST 101e MPH SE IN 1978 [RECORD FOR MONTH] TODAY'S REPORT PREPARED BY: Benjamin Turner