Thursday, August 30, 2018
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
