BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY FRIDAY, DECEMBER 4, 2015   ALL TIMES ARE IN EASTERN STANDARD TIME DRY COOL AIR WORKS INTO THE REGION, BRILLIANT BLUE SKIES THIS MORNING Yesterday's maximum temperature of 53F was reached by midnight yesterday morning, with back to back days featuring a maximum reading of 53F and minimum of 37F. Both days were 9 degrees above the daily normal temperature. Although December has begun with rain spanning three days, precipitation for the month is still 0.12 inches below normal. Annual precipitation is 9.24 inches below normal with a strong likelihood that this deficit will not be erased by the end of the year. BHO Warmest Novembers, deg F (1885-2015): 1) 47.9 in 2011 2) 47.4 in 1975 3) 47.1 in 2006 4) 46.4 in 1948    46.4 in 1979    46.4 in 2009 7) 46.1 in 2015 8) 46.0 in 2001 9) 45.7 in 1953    45.7 in 1999 PRELIMINARY STATS FOR OCTOBER 2015 TEMPERATURE, Deg. F Avg. Max. 54.3 [+4.3] Avg. Min. 38.6 [+5.1] Mean      46.5 [+4.8] Corrected mean: 46.1 Max. for month: 72 on 5th Min. for month: 23 on 24th COOLING DEGREE DAYS Total cooling units: 1 [+1]   Total for the season: 811 [+209] Total for last season: 595 HEATING DEGREE DAYS Total heating units: 548 [-150]   Total for the season: 1002 [-259] Total for last season: 1159 PRECIPITATION, Inches Total: 2.59 [-2.18] Greatest in 24 hrs: 1.18 from 20th Snowfall: Trace [-2.3] Seasonal: Trace [-2.6]   WIND, mph Avg. uncorrected wind speed: 12.4 Avg. corrected wind speed: 12.7 Prevailing wind direction: W @ 13% Peak gust and direction: 43 SSE on the 20th SUNSHINE: Campbell-Stokes card minutes: 9222/17010 or 54% Astronomical total minutes:   9562/17644 or 54%      Today's Observations: 7 A.M. Weather: Clear, few stratocumulus distant offshore NE-S, few cumulus distant WNW Temperature: 32F; Dew Point: 29F; Wind: W at 9 kts Sea-level pressure: 29.29 ins. Hg, rising, then more quickly  Visibility: 75 miles 6-hr Max temp: 37F  6-hr Min temp: 32F 24-hr precip: Trace  BHO SA 1155 CLR 75 259/32/29/2809/029/ FEW SC DSNT OFFSHR NE-S FEW CU DSNT WNW/ 8/500 53031 10037 20032 10 A.M. Weather: Clear, few stratocumulus distant offshore ENE-ESE, few cumulus distant SW-NNE Temperature: 41F; Dew Point 31F; Wind: estimated WNW at 5 kts, Wind Speed: Light Sea-level pressure: 30.37 ins. Hg, rising, then more quickly    Visibility: 70 miles BHO SA 1455 CLR 70 285/41/31/E2905/037/ FEW SC DSNT OFFSHR ENE-ESE  FEW CU DSNT SW-NNE WND LGT/ 8/800 53026 1 P.M. Weather: Clear, few stratocumulus/cumulus in all directions Temperature: 46F; Dew Point 31F; Wind: W at 13G23 kts, Sea-level pressure: 30.36 ins. Hg, falling, then more slowly  Visibility: 80 miles, except 50 miles W-NW 6-hr max. temp: 46F 6-hr min. temp: 32F BHO SA 1755 CLR 80 282/46/31/2813G23/036/ VSBY W-NW 50 MI FEW CU/SC ALQDS/ 8/500 56003 10046 20032 SUMMARY FOR THURSDAY, DECEMBER 3, 2015     TEMPERATURE (DEGREES F) MAX.....53   NORMAL.....44 MIN.....37   NORMAL.....28  MEAN....45   NORMAL.....36   DEPARTURE FROM 30-YEAR NORMAL......................+9 TOTAL DEPARTURE FOR THE MONTH.....................+17  [+5.5 DEGREES/DAY] HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............20   DEPARTURE..........-9 TOTAL HEATING UNITS FOR THE MONTH..............69   DEPARTURE.........-18 TOTAL HEATING UNITS FOR THE SEASON...........1071   DEPARTURE........-277 TOTAL HEATING UNITS LAST SEASON TO DATE......1228   DIFFERENCE.......-157   PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................43 WNW  AT   4:07 P.M.                     ASOS........................42 WNW  AT   4:25 P.M.                            DAVIS.......................40 NW   AT   1:14 P.M. RMY 42 FASTEST MILE FOR YESTERDAY.....................31 WNW  AT   4:08 P.M.       MAXIMUM 2-MINUTE ASOS AVERAGE..................30 W    AT   4:08 P.M.              MAXIMUM 2-MINUTE DAVIS AVERAGE.................27 NW   AT   1:15 P.M.              AVERAGE WIND SPEED AND DIRECTION.............16.3 WNW                    ASOS......................15.7                          DAVIS.....................13.8 WNW [292 Deg.]     * Last of several occurrences  PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....TRACE  DEPARTURE......-0.17                          ASOS...............0.00 TOTAL PRECIPITATION FOR THE MONTH...........0.37  DEPARTURE......-0.12                          ASOS...............0.36 TOTAL PRECIPITATION FOR THE YEAR...........39.79  DEPARTURE......-9.24                            ASOS................N/A *** *** ASOS annual total not available due to erroneous readings SNOWFALL (INCHES) THROUGH THIS MORNING (EST) TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.3 TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE......-0.8 TOTAL SNOWFALL FOR THE SEASON.............TRACE  DEPARTURE......-3.4  PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER & DECEMBER CALENDAR DAY DATA   DATA REPORTED: DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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 11/1  59/45/52/+6/T/006/01                  30 SSW RMY 31   11/2  62/47/55/+9/0.00/476/77               24 W   RMY N/A 11/3  71/44/58/+12/0.00/616/100             25 W   RMY 25 11/4  66/49/58/+13/0.00/601/98              22 SSW RMY N/A 11/5  72/51/62/+17/0.00/281/46              31 SW  RMY 36   11/6  71/60/66/+21/0.00/109/18              35 SSW RMY 38 11/7  64/46/55/+10/0.00/029/04              33 WNW RMY 35 11/8  54/39/47/+3/0.00/591/98               26 NW  RMY 30 11/9  59/38/49/+5/0.00/577/96               20 W   RMY 21 11/10 53/45/49/+5/0.11/000/00               28 NE  RMY N/A 11/11 48/43/46/+3/0.60/000/00               41 NE  RMY N/A  11/12 55/42/49/+6/0.07/000/00               28 S   RMY 30 11/13 57/41/49/+6/0.02/385/65               40 WSW RMY 47 11/14 45/31/38/-4/0.00/425/72               40 NW  RMY 47   11/15 51/31/41/-1/0.00/241/41               25 W   RMY 27 11/16 59/36/48/+6/0.00/416/71               25 NNW RMY 29 11/17 45/28/37/-4/0.00/572/98               18 NNE RMY N/A 11/18 50/35/43/+2/0.00/575/99               17 SSE RMY N/A 11/19 55/38/47/+6/T/000/00                  29 SSE RMY N/A 11/20 58/41/50/+10/1.18/416/72              43 SSE RMY N/A 11/21 46/35/41/+1/0.00/380/66               20 ENE RMY 21 11/22 45/35/40/+0/0.40/000/00               26 NW  RMY 28 11/23 40/25/33/-6/0.02/543/95               24 NW  RMY 29 11/24 42/23/33/-6/0.00/564/99               20 WSW RMY 19 11/25 46/31/39/+0/0.00/568/100              18 SSE RMY N/A 11/26 58/37/48/+10/0.00/386/68              33 S   RMY 35  11/27 63/48/54/+18/0.00/249/44              35 SW  RMY 38  11/28 55/38/47/+9/0.19/000/00               23 SW  RMY N/A  11/29 42/28/35/-2/0.00/410/73               17 NNW RMY 21 11/30 37/27/32/-5/T/T/151/27                17 S   RMY 18 12/1  42/30/36/-1/..../000/00               19 NNE RMY 19 12/2  53/37/45/+9/..../000/00               25 SSE RMY 25 12/3  53/37/45/+9/..../.../..               43 WNW RMY 42 12/4 low since midnight is 32F; normal low is now 28F   DAILY RECORDS FOR NOVEMBER AND DECEMBER 2015 **11/6 DAILY RECORD MAXIMUM TEMPERATURE OF 71F        TIES PREVIOUS RECORD OF 71F SET IN 1959   **11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F        BREAKS PREVIOUS RECORD OF 58F SET IN 1938 **11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F        TIES PREVIOUS MONTHLY RECORD OF 60F SET ON         11/8/1996 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated):  RECORDS FOR DECEMBER 4 HIGH 67 IN 1998 LOW -4 IN 1940 PRECIP 1.87 INS. IN 1968 SNOWFALL 6.0 INS. IN 1907 PEAK GUST 73 MPH WNW IN 1980 RECORDS FOR DECEMBER 5 HIGH 65 IN 2001 LOW -1 IN 1926 PRECIP 2.86 INS. IN 1993 SNOWFALL 7.0 INS. IN 1926, 1981 PEAK GUST 67 MPH WNW IN 1961, S IN 1973 TODAY'S REPORT PREPARED BY: Brian Fitzgerald