BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SATURDAY, NOVEMBER 5, 2016 ALL TIMES ARE IN EASTERN STANDARD TIME BUILDING HIGH PRESSURE GIVES US A PLEASANT DAY WITH LIGHT WINDS Westerly winds and low humidities continue today. Temperatures have been slightly lower than normal with an early morning low of 32F and a max. of 53F by 1:00PM EST. Skies cleared to partly cloudy by early afternoon with visibility reaching 70 miles. October's greater-than-normal precip. has helped to lesson drought conditions in the Boston area. The US Drought Monitor updated the drought status to Severe this week. The portion of the state in extreme drought decreased from 38% to 29% from October 25, 2016 to November 1, 2016. PRELIMINARY STATS FOR OCTOBER 2016 TEMPERATURE, Deg. F Avg. Max. 62.3 [+2.0] Avg. Min. 45.3 [+2.4] Mean 53.8 [+2.2] 24-hour corrected mean: 53.2 Max. for month: 79F on 19th Min. for month: 28F on 27th HEATING DEGREE DAYS Total heating units: 346 [-75] Total for the season: 421 [-142] Total for last season: 454 COOLING DEGREE DAYS Total cooling units: 7 [+2] Total for the season: 901 [+299] Total for last season: 810 PRECIPITATION, Inches Total: 7.04 [+2.35] Greatest in 24 hrs: 1.89 in. on 9th WIND, mph Avg. uncorrected wind speed: 11.3 Avg. corrected wind speed: 11.8 Prevailing wind direction: W at 11% Peak gust and direction: 47 W on 23rd SUNSHINE: Campbell-Stokes card minutes: 11598 mins. of possible 19824 or 59% Astronomical total minutes: 11986 mins. of possible 20503 or 58% 7 A.M. Weather: Broken altocumulus, virga E-SE Temperature: 36F; Dew Point: 27F; Wind: W at 8 kts Sea-level pressure: 30.17 ins. Hg, steady then rising Visibility: 70 miles 6-hr Max temp: 36F 6-hr Min temp: 32F 24-hr precip: 0.00 in. BHO SA 1155 E120 BKN 70 216/36/27/2708/017/ VIRGA E-SE/ 8/060 53002 10036 20032 10 A.M. Weather: Overcast stratus, small break in overcast NE Temperature: 42F; Dew Point: 31F; Wind: SW at 6 kts, Wind Speed: Light Sea-level pressure: 30.16 ins. Hg, steady then falling Visibility: 40 miles BHO SA 1455 E39 OVC 40 214/42/31/2206/016/ SML BINOVC NE WND LGT/ 8/6// 58002 1 P.M. Weather: Few cumulus in all directions, scattered stratocumulus Temperature: 53F; Dew Point: 37F; Wind: W at 7 kts Sea-level pressure: 30.11 ins. Hg, falling, then more quickly Visibility: 70 miles 6-hr Max. temp: 53F 6-hr Min. temp: 35F BHO SA 1755 39 SCT 70 197/53/37/2807/011/ FEW CU ALQDS/ 8/800 58017 10053 20035 SUMMARY FOR FRIDAY, NOVEMBER 4, 2016 TEMPERATURE (DEGREES F) MAX.....56 NORMAL.....54 MIN.....35 NORMAL.....37 MEAN....46 NORMAL.....45 DEPARTURE FROM 30-YEAR NORMAL........................+1 TOTAL DEPARTURE FOR THE MONTH.......................+19 [+4.6 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0 DEPARTURE...........0 TOTAL COOLING UNITS FOR THE MONTH...............0 DEPARTURE...........0 TOTAL COOLING UNITS FOR THE SEASON............901 DEPARTURE........+299 TOTAL COOLING UNITS LAST SEASON TO DATE.......810 DIFFERENCE........+91 HEATING DEGREE DAYS (SEASON JUL TO JUN) TOTAL HEATING UNITS FOR YESTERDAY..............19 DEPARTURE..........-1 TOTAL HEATING UNITS FOR THE MONTH..............58 DEPARTURE.........-19 TOTAL HEATING UNITS FOR THE SEASON............479 DEPARTURE........-161 TOTAL HEATING UNITS LAST SEASON TO DATE.......491 DIFFERENCE........-12 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................26 NW AT 8:59 A.M. ASOS........................30 NW AT 9:00 A.M. DAVIS.......................28 NW AT 8:59 A.M. RMY 30 FASTEST MILE FOR YESTERDAY.....................20 WNW AT 11:25 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................20 NW AT 11:25 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................19 WNW AT 11:25 A.M. AVERAGE WIND SPEED AND DIRECTION.............11.1 NW ASOS......................11.3 DAVIS......................9.8 NW [315 Deg.] *last of several occurrences 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..........0.01 DEPARTURE......-0.62 ASOS..............0.02 TOTAL PRECIPITATION FOR THE YEAR..........34.37 DEPARTURE.....-10.03 ASOS.............34.72 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 10/1 57/52/55/-2/1.22/000/00 33 NNE AERO M RMY 34 10/2 55/52/54/-3/0.19/000/00 23 N AERO M RMY N/A 10/3 69/53/61/+5/0.00/404/58 21 ENE AERO M RMY 20 10/4 61/47/54/-2/T/493/71 26 NE AERO M RMY 27 10/5 61/44/53/-3/0.00/630/91 22 NE AERO M RMY 21 10/6 71/46/59/+4/0.00/682/99 16 SW* AERO M RMY 15 10/7 75/54/65/+10/0.00/679/99 16 S AERO M RMY 16 10/8 69/53/61/+7/0.00/130/19 23 SSW AERO M RMY 23 10/9 63/44/54/0/1.89/000/00 28 N AERO M RMY 34 10/10 57/40/49/-5/0.00/658/97 32 NW AERO M RMY 32 10/11 62/39/51/-2/0.00/655/97 17 N AERO M RMY N/A 10/12 68/49/59/+6/0.00/645/96 17 S AERO M RMY 17 10/13 71/52/62/+9/T/348/52 24 SSW AERO M RMY 28 10/14 58/41/50/-2/0.00/667/100 26 NNW AERO M RMY 25 10/15 58/38/48/-4/0.00/578/87 23 S AERO M RMY 26 10/16 68/46/57/+6/0.00/562/85 28 SSW AERO M RMY 30 10/17 76/58/67/+16/0.00/494/75 23 WSW AERO M RMY N/A 10/18 74/56/65/+14/0.54/210/32 35 SSW AERO M RMY 37 10/19 79/58/69/+19/0.00/549/84 29 SSW AERO M RMY N/A 10/20 64/54/59/+9/0.05/429/66 23 ENE AERO M RMY 22 10/21 75/57/66/+16/1.60/142/22 30 ESE AERO M RMY 31 TSTM 10/22 65/40/53/+4/0.23/000/00 37 WSW AERO M RMY N/A 10/23 56/41/49/0/0.00/578/90 47 W AERO M RMY 50 10/24 59/41/50/+1/T/607/95 38 W AERO M RMY 40 10/25 48/33/41/-8/0.00/586/92 33 WNW AERO M RMY 35 10/26 47/32/40/-8/0.00/495/78 29 WNW AERO M RMY 31 10/27 46/28/37/-11/0.67/013/02 28 ESE AERO 28 ESE RMY N/A 10/28 51/41/46/-2/0.38/000/00 40 WNW AERO 41 WNW RMY 43 10/29 55/37/46/-1/T/000/00 24 SSW AERO 24 SSW RMY N/A 10/30 63/43/53/+6/0.27/150/24 25 W AERO 25 WSW RMY N/A 10/31 51/34/43/-4/0.00/602/97 31 NW AERO 29 NW RMY 33 PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 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 11/1 55/29/42/-4/0.00/.../.. 22 SSE AERO 22 S RMY N/A 11/2 69/45/57/+11/0.00/.../.. 24 SSW AERO 24 S RMY 26 11/3 65/49/57/+11/0.01/.../.. 38 W AERO 41 W RMY 38 11/4 56/35/46/+1/0.00/.../.. 26 NW AERO 26 NW RMY 30 11/5 Low temp since midnight is 32F; normal low is now 37F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR NOVEMBER 5 HIGH 76 IN 1994 LOW 18 IN 1908 PRECIP 4.26 INCHES IN 1955 SNOWFALL 1.5 IN 1892 PEAK GUST 69 W IN 2004 RECORDS FOR NOVEMBER 6 HIGH 71 IN 1959, 2015 LOW 22 IN 1951 PRECIP 1.72 INCHES IN 1907 SNOWFALL 8.0 IN 1894 PEAK GUST 63 W IN 1973 TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle