BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA DAILY DISCUSSION AND CLIMATE SUMMARY TUESDAY, AUGUST 27, 2019 ALL TIMES ARE IN EASTERN STANDARD TIME INCREASING CLOUDS WITH SLIGHTLY WARMER WEATHER ATOP GREAT BLUE HILL.... We observed a good visibility of 70 miles throughout the day. Skies became cloudier as the day went on, becoming completely overcast after 1 P.M. Wind was light and southerly, with a max gust so far of 14 mph. The high so far today is 77F, a degree below the daily normal maximum of 78F. The low since midnight is 54F, 6 degrees below the average daily minimum of 60F. Today's Observations: 7 A.M. Weather: Broken cirrus, few distant cumulus NE-SE-S, few distant altocumulus WNW Temperature: 59F; Dew Point: 52F; Wind: W at 4 kts, Wind: Light and variable Sea-level pressure: 30.14 ins. Hg, falling Visibility: 75 miles, thin smoke layer 6-hr Max temp: 59F 6-hr Min temp: 54F 24-hr Precip: 0.00 ins. BHO SA 1155 E250 BKN 75 205/59/52/2604/014/ FEW DSNT CU NE-SE-S FEW DSNT AC WNW THN K LYR ALQDS WND L/V/ 8/182 56001 10059 20054 10 A.M. Weather: Broken altocumulus and cirrus, few distant cumulus E-SE Temperature: 68F; Dew Point: 50F; Wind: S at 2 kts, Wind: Light and variable Sea-level pressure: 30.13 ins. Hg, falling steadily Visibility: 65 miles 3-hr Precip: 0.00 ins. BHO SA 1455 E130 BKN 250 BKN 65 201/68/50/1902/013/ FEW DSNT CU E-SE WND L/V/ 8/182 58004 1 P.M. Weather: Broken altocumulus and cirrus Temperature: 75F; Dew Point: 51F; Wind: SE at 6 kts, Wind: Light Sea-level pressure: 30.08 ins. Hg, falling Visibility: 65 miles 6-hr Max temp: 77F 6-hr Min temp: 59F 6-hr Precip: 0.00 ins. BHO SA 1755 E140 BKN 250 BKN 65 185/75/51/1406/008/ WND LGT/ 8/082 57016 10077 20059 SUMMARY FOR MONDAY, AUGUST 26, 2019 TEMPERATURE (DEGREES F) MAX.....71 NORMAL.....78 MIN.....51 NORMAL.....61 MEAN....61 NORMAL.....69 DEPARTURE FROM 30-YEAR NORMAL......................-8 TOTAL DEPARTURE FOR THE MONTH.....................+22 [+0.6 DEGREES/DAY] COOLING DEGREE DAYS (SEASON JAN TO DEC) TOTAL COOLING UNITS FOR YESTERDAY...............0 DEPARTURE.........-5 TOTAL COOLING UNITS FOR THE MONTH.............186 DEPARTURE........+22 TOTAL COOLING UNITS FOR THE SEASON............597 DEPARTURE........+82 TOTAL COOLING UNITS LAST SEASON TO DATE.......689 DEPARTURE........-82 PEAK GUST AND AVERAGE WIND SPEED (MPH) PEAK WIND GUST FOR YESTERDAY....................25 NE AT 9:35 A.M. AERO.........................21 NE AT 10:00 A.M. ASOS.........................25 NE AT 9:36 P.M. DAVIS........................25 ENE AT 9:35 P.M. RMY 25 FASTEST MILE FOR YESTERDAY......................17 NE AT 11:11 A.M. MAXIMUM 2-MINUTE ASOS AVERAGE...................18 ENE AT 11:21 A.M. MAXIMUM 2-MINUTE DAVIS AVERAGE..................18 ENE AT 9:25 A.M. AVERAGE WIND SPEED AND DIRECTION..............8.3 NE ASOS.......................9.0 DAVIS......................8.9 NE [55 deg.] PRECIPITATION (INCHES) THROUGH THIS MORNING (EST) TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00 DEPARTURE......-0.12 ASOS..............0.00 TOTAL PRECIPITATION FOR THE MONTH..........1.02 DEPARTURE......-2.47 ASOS..............0.97 TOTAL PRECIPITATION FOR THE YEAR..........36.34 DEPARTURE......+1.86 ASOS.............36.25 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 8/01 84/66/75/+3/0.00/755/87 18 NNW AERO 20 NW RMY 17 8/02 83/61/72/0/0.00/804/93 18 WSW AERO 18 WSW RMY 18 8/03 84/66/75/+3/0.00/302/35 25 SW AERO 26 SW RMY 25 8/04 83/66/75/+3/0.00/732/85 21 NE AERO 23 SW RMY 25 8/05 81/58/70/-2/0.00/842/98 20 S AERO 18 S RMY 19 8/06 79/63/71/-1/0.00/282/33 15 S AERO 14 S RMY 17 8/07 82/66/74/+2/..../367/43 32 SSW AERO 35 SSW RMY 35 8/08 84/67/76/+4/..../588/69 30 SW AERO 24 WNW RMY 29 8/09 82/63/73/+1/..../815/96 28 NW AERO 25 NW RMY 26 8/10 78/59/69/-2/..../720/85 32 NW AERO 28 NW RMY 28 8/11 78/55/67/-4/0.00/734/87 28 W AERO 25 W RMY 28 8/12 82/60/71/0/0.00/749/89 25 W AERO 23 W RMY 26 8/13 77/66/72/+1/0.02/059/07 25 W AERO 24 WSW RMY 24 8/14 75/62/69/-2/..../452/54 24 ENE AERO 22 ENE RMY 22 8/15 77/59/68/-3/..../568/68 17 ESE AERO 15 SSE RMY 16 8/16 78/61/70/-1/..../732/88 20 E AERO 17 ESE RMY 18 8/17 78/67/73/+2/..../099/12 14 SE AERO 15 SE RMY 15 8/18 88/70/79/+8/..../529/64 18 SSW AERO 18 SSW RMY 21 8/19 92/69/81/+11/..../.../.. 25 WSW AERO 23 WSW RMY 25 8/20 87/66/77/+7/..../.../.. 18 W AERO 14 WSW RMY N/A 8/21 85/68/77/+7/0.12/.../.. 33 SW AERO 32 SW RMY 33 8/22 88/68/78/+8/0.00/.../.. 25 W AERO 21 W RMY 26 8/23 78/60/69/-1/0.04/.../.. 23 N AERO 18 N RMY 24 8/24 72/55/64/-6/0.00/.../.. 25 ENE AERO 21 ENE RMY 22 8/25 66/56/61/-8/0.00/.../.. 31 ENE AERO 25 ENE RMY 29 8/26 71/51/61/-8/0.00/.../.. 25 NE AERO 21 NE RMY 25 8/27 Low temp since midnight is 54F; normal low is 60F DAILY EXTREMES Temperature and precipitation records back to 1885, and wind records back to 1940 (e = estimated): RECORDS FOR AUGUST 27 HIGH 99F IN 1948 LOW 44F IN 1885 PRECIP 2.77 INCHES IN 1946 PEAK GUST 48 MPH NW IN 1983 RECORDS FOR AUGUST 28 HIGH 95F IN 1948 LOW 43F IN 1885 PRECIP 1.80 INCHES IN 1922 PEAK GUST 87 MPH SSE IN 1971 (DORIA) TODAY'S REPORT PREPARED BY: Benjamin Turner