BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY THURSDAY, AUGUST 30, 2018  ALL TIMES ARE IN EASTERN STANDARD TIME WIND FROM THE NORTHWEST BRINGS COOLER TEMPERATURES TO  GREAT BLUE HILL TODAY... Yesterday we had a record breaking high minimum temperature  of 75F. This breaks the previous record of 74F, set back in 1948. Visibility increased from 20 miles at 7:00 A.M. to 70  miles at 1:00 P.M. Humidity decreased as the day went on, leading to this better visibility. Wind shifted from the SW to the NW, leading to cooler temperatures on top of Great  Blue Hill. The temperature increased to a high so far today  of 86F at 1:00 P.M. Cloud cover increased throughout the day, with a consistent cirrostratus and an increase in  cumulus clouds into the afternoon. Today's Observations: 7 A.M. Weather: Scattered altocumulus, scattered cirrostratus, Temperature: 77F; Dew Point: 72F; Wind: WNW at 6G10 kts, Wind: Light  Sea-level pressure: 29.97 ins. Hg, rising unsteadily     Visibility: 20 miles, hazy, smoke layer along horizon  6-hr Max temp: 77F 6-hr Min temp: 74F 24-hr Precip: 0.00 ins.   BHO SA 1155 180 SCT 250 SCT 20 148/77/72/2906G10/997/ K LYR  ALG HRZN HAZY WND LGT/ 8/038 52014 10077 20074 10 A.M. Weather: Scattered cirrostratus, few cumulus in all directions, few altocumulus ESE-SE Temperature: 84F; Dew Point: 70F; Wind: NW at 9G17 kts  Sea-level pressure: 30.00 ins. Hg, rising, then more rapidly Visibility: 70 miles, distant haze 3-hr Precip: 0.00 ins.  BHO SA 1455 250 SCT 70 160/84/70/3209G17/000/ FEW CU  ALQDS FEW AC ESE-SE DSNT HZ/ 8/138 53012 1 P.M. Weather: Scattered cumulus, scattered altocumulus, broken cirrostratus, few towering cumulus NNE and E  Temperature: 86F; Dew Point: 68F; Wind: NNW at 08G16 kts Sea-level pressure: 30.02 ins. Hg, rising then steady    Visibility: 70  6-hr Max temp: 88F 6-hr Min temp: 77F 6-hr Precip: 0.00 ins. BHO SA 1755 40 SCT 85 SCT E250 BKN 70 166/86/68/3308G16/002/  FEW TCU NNE AND E/ 8/435 52006 10088 20077 SUMMARY FOR WEDNESDAY, AUGUST 29, 2018  TEMPERATURE (DEGREES F) MAX.....94   NORMAL.....77 MIN.....75   NORMAL.....60 MEAN....85   NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL........................+16 TOTAL DEPARTURE FOR THE MONTH.......................+117 [+3.8 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY..............20  DEPARTURE.........+16 TOTAL COOLING UNITS FOR THE MONTH.............284  DEPARTURE........+106 TOTAL COOLING UNITS FOR THE SEASON............739  DEPARTURE........+210 TOTAL COOLING UNITS LAST SEASON TO DATE.......605  DEPARTURE........+134 PEAK GUST AND AVERAGE WIND SPEED (MPH)  PEAK WIND GUST FOR YESTERDAY.....................25 SW  AT 1:02 P.M.                    AERO..........................24 SW  AT 1:56 P.M.                    ASOS..........................27 SSW AT 1:03 P.M.                    DAVIS.........................31 WSW AT 1:02 P.M. RMY 27  FASTEST MILE FOR YESTERDAY.......................20 SW  AT 3:21 P.M. MAXIMUM 2-MINUTE ASOS AVERAGE....................21 SW  AT 3:21 P.M. MAXIMUM 2-MINUTE DAVIS AVERAGE...................22 WSW AT 3:21 P.M. AVERAGE WIND SPEED AND DIRECTION...............11.5 WSW                    ASOS........................11.9                    DAVIS.......................11.7 WSW [256 DEG] * LAST OF MULTIPLE OCCURRENCES PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.11                          ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........3.95  DEPARTURE......+0.14                          ASOS..............3.94  TOTAL PRECIPITATION FOR THE YEAR..........37.96  DEPARTURE......+3.34                          ASOS.............39.52 PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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 8/1  82/66/74/+2/T/199/23           31 S   AERO 30 S   RMY 31 8/2  92/74/83/+11/0.00/761/88       30 SW  AERO 28 SW  RMY 31  8/3  88/74/81/+9/0.19/492/57        35 NW  AERO 32 NW  RMY 35 TSTM 8/4  82/69/76/+4/1.16/301/35        28 SW  AERO 25 SW  RMY 30 TSTM 8/5  89/66/78/+6/0.00/815/95        20 W   AERO 18 W   RMY 19 8/6  92/71/82/+10/0.00/822/96       20 W   AERO 16 WSW RMY N/A 8/7  92/73/83/+11/0.00/682/80       25 S   AERO 23 S   RMY 26 8/8  88/71/80/+8/0.70/460/54        25 SSW AERO 25 SSW RMY N/A TSTM  8/9  86/70/78/+6/0.07/509/60        29 SW  AERO 28 SW  RMY N/A TSTM 8/10 85/66/76/+5/0.00/651/77        17 NW  AERO 16 NW  RMY N/A           8/11 70/66/68/-3/0.34/000/00        18 SE  AERO 17 SE  RMY 18 8/12 73/66/70/-1/0.39/000/00        23 NNE AERO 18 NNE RMY 21 8/13 69/64/67/-4/0.17/000/00        23 ENE AERO 21 ENE RMY 21  8/14 83/69/76/+5/0.00/502/60        25 S   AERO 23 S   RMY 24  8/15 86/68/77/+6/0.00/509/61        20 W   AERO 17 W   RMY 19  8/16 87/70/79/+8/0.00/515/62        20 W   AERO 18 W   RMY 20  8/17 83/67/75/+4/..../531/64        23 SSW AERO 23 SSW RMY N/A 8/18 83/63/73/+2/..../165/20        31 NE  AERO 30 NE  RMY 33 TSTM  8/19 68/62/65/-5/..../527/64        30 NE  AERO 30 NE  RMY 32 8/20 72/61/67/-3/0.00/591/72        28 ENE AERO 25 ENE RMY 27  8/21 69/61/65/-5/T/155/19           20 ESE AERO 17 ESE RMY N/A  8/22 82/62/72/+2/..../326/40        35 WNW AERO 35 WNW RMY 35  8/23 76/60/68/-2/..../.../..        25 NW  AERO 23 NW  RMY 27 8/24 82/59/71/+1/0.00/.../..        20 SSE AERO 18 SSE RMY 20 8/25 80/59/70/+1/0.00/.../..        20 S   AERO 18 S   RMY 20 8/26 81/59/70/+1/0.00/.../..        21 SSW AERO 20 SSW RMY 21 8/27 86/67/77/+8/0.00/.../..        21 WNW AERO 18 WNW RMY 18 8/28 93/72/83/+14/0.00/.../..       25 WSW AERO 25 WSW RMY 28 8/29 94/75/85/+16/0.00/.../..       25 SW  AERO 24 SW  RMY 27  8/30 Low temp since midnight is 74F; normal low is now 60F DAILY RECORDS FOR AUGUST 2018 08/03/18: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 74F,            BREAKS PREVIOUS RECORD OF 71F SET IN 1928, 1969, AND 1979 08/07/18: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 73F,            BREAKS PREVIOUS RECORD OF 72F SET IN 1988 08/29/18: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 75F,            BREAKS PREVIOUS RECORD OF 74F SET IN 1948 DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 30 HIGH 94F IN 1953 LOW 39F IN 1965 PRECIP 2.75 INCHES IN 1936 PEAK GUST 43 MPH NW IN 1965 RECORDS FOR AUGUST 31 HIGH 94F IN 1953 LOW 42F IN 1976 PRECIP 2.46 INCHES IN 1954 PEAK GUST 125 MPH SE IN 1954 [CAROL - RECORD FOR MONTH] TODAY'S REPORT PREPARED BY: Samantha Richard/Kaitlin Geagan