BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY SUNDAY, OCTOBER 23, 2016 ALL TIMES ARE IN EASTERN STANDARD TIME CLEAR SKIES AND GUSTY WINDS AS PRESSURE INCREASES Skies were clear today with only few cumulus and few cirrus. Humidity was low with dew points in the upper 20s which allowed for visibility up to 80 miles. Air pressure has been steadily increasing as the strong low pressure system moved off shore. This has also brought blustery conditions to Blue Hill. The peak gust since midnight was 47 mph at 3:11AM EST. Temperatures reached a high of 55F by the 1:00PM observation. 7 A.M. Weather: Few cumulus in all directions, broken altocumulus Temperature: 43F; Dew Point: 30F; Wind: WSW at 24G35 kts Peak Wind: 35 kts (40 mph) WSW at 6:38 AM EST Sea-level pressure: 29.57 ins. Hg, rising, then less quickly Visibility: 70 miles 6-hr Max temp: 44F 6-hr Min temp: 42F 24-hr precip: 0.22 in. BHO SA 1155 E110 BKN 70 015/43/30/2524G35/957/ FEW CU ALQDS PK WND 2535/48/ 8/170 51024 MANUAL 70022 ASOS 70021 10044 20042 10 A.M. Weather: Few cumulus in all directions, few cirrus in all directions Temperature: 48F; Dew Point: 28F; Wind: W at 26G38 kts Peak Wind: 38 kts (44 mph) W at 9:53 AM EST Sea-level pressure: 29.59 ins. Hg, rising, then falling Visibility: 70 miles BHO SA 1455 CLR 70 020/48/28/2626G38/959/ FEW CU ALQDS FEW CI ALQDS PK WND 2638/53/ 8/101 50005 1 P.M. Weather: Few cumulus SE-SW and W-E, few cirrus NW-NE Temperature: 55F; Dew Point: 24F; Wind: SW at 23G33 kts Peak Wind: 38 kts (44 mph) W at 11:58 AM EST Sea-level pressure: 29.61 ins. Hg, falling, then rising Visibility: 80 miles 6-hr Max. temp: 55F 6-hr Min. temp: 42F BHO SA 1755 CLR 80 026/55/24/2823G33/961/ FEW CU SE-SW AND W-E FEW CI NW-NE PK WND 2738/58/ 8/102 53006 10055 20042 SUMMARY FOR SATURDAY, OCTOBER 22, 2016 TEMPERATURE (DEGREES F) MAX.....65 NORMAL.....58 MIN.....40 NORMAL.....41 MEAN....53 NORMAL.....49 DEPARTURE FROM 30-YEAR NORMAL........................+4 TOTAL DEPARTURE FOR THE MONTH......................+102 [+4.4 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0 DEPARTURE...........0 TOTAL COOLING UNITS FOR THE MONTH...............7 DEPARTURE..........+2 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..............12 DEPARTURE..........-4 TOTAL HEATING UNITS FOR THE MONTH.............166 DEPARTURE........-101 TOTAL HEATING UNITS FOR THE SEASON............241 DEPARTURE........-168 TOTAL HEATING UNITS LAST SEASON TO DATE.......306 DIFFERENCE........-65 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY...................37 WSW AT 11:38 P.M. ASOS........................39 W AT 11:39 P.M. DAVIS.......................38 WSW AT 11:38 P.M. RMY 50 FASTEST MILE FOR YESTERDAY.....................27 W AT 7:21 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE..................26 W AT 7:25 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE.................25 WSW AT 4:54 P.M. AVERAGE WIND SPEED AND DIRECTION.............13.0 WSW ASOS......................13.9 DAVIS.....................11.3 W [265 Deg.] *last of several occurrences PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.22 DEPARTURE......+0.06 ASOS..............0.21 TOTAL PRECIPITATION FOR THE MONTH..........5.72 DEPARTURE......+2.43 ASOS..............5.75 TOTAL PRECIPITATION FOR THE YEAR..........33.04 DEPARTURE......-9.33 ASOS.............33.39 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/..../429/66 23 ENE AERO M RMY 22 10/21 75/57/66/+16/..../142/22 30 ESE AERO M RMY 31 10/22 65/40/53/+4/..../.../.. 37 WSW AERO M RMY 50 10/23 Low temp since midnight is 41F; normal low is now 40F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR OCTOBER 23 HIGH 82F IN 1947 LOW 24F IN 1969 PRECIP 3.66 INCHES IN 2014 SNOWFALL 3.0 INCHES IN 1891 PEAK GUST 78e MPH NW IN 1941 RECORDS FOR OCTOBER 24 HIGH 79F IN 1963 LOW 22F IN 1969 PRECIP 2.96 INCHES IN 1890 SNOWFALL 1.8 INCHES IN 1960 PEAK GUST 70 MPH SE IN 1959 TODAY'S REPORT PREPARED BY: Lizzy Suzedell