Wednesday, August 24, 2016

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 24, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

WARMER AIR AND CONTINUING SUNNY AND DRY CONDITIONS AS HIGH PRESSURE MOVES EAST

After the previous cool days, warmer temperatures returned to Blue Hill with
a high of 88F by 1:00PM EST. The only clouds present in each observation were
cirrostratus leaving us with another day of mostly sunny skies. Even though
there was distant haze, visibility was very good at 70 miles. Humidity was
slightly higher than yesterday, but it was still comfortable with dew points
in the upper 50s.

7 A.M.
Weather: Scattered cirrostratus
Temperature: 66F; Dew Point: 56F; Wind: W at 9 kts
Sea-level pressure: 30.26 ins. Hg, rising, then more quickly
Visibility: 70 miles, distant haze
6-hr Max temp: 66F
6-hr Min temp: 62F
24-hr precip: 0.00 in.
BHO SA 1155 250 SCT 70 248/66/56/2609/026/ DSNT HZ/
8/005 53009 10066 20062

10 A.M.
Weather: Scattered cirrostratus
Temperature: 79F; Dew Point: 55F; Wind: SSW at 5 kts,
Wind Speed: Light
Sea-level pressure: 30.25 ins. Hg, steady, then falling
Visibility: 70 miles, distant haze
BHO SA 1455 250 SCT 70 245/79/55/2005/025/ DSNT HZ WND LGT/
8/005 58003

1 P.M.
Weather: Few cirrostratus in all directions
Temperature: 86F; Dew Point: 58F; Wind: W at 8G18 kts,
Sea-level pressure: 30.21 ins. Hg, falling, then more quickly
Visibility: 70 miles, distant haze
6-hr Max temp: 88F
6-hr Min temp: 66F
BHO SA 1755 CLR 70 229/86/58/2608G18/021/ FEW CS ALQDS DSNT HZ/
8/005 56016 10088 20066

SUMMARY FOR TUESDAY, AUGUST 23, 2016

TEMPERATURE (DEGREES F)
MAX…..80   NORMAL…..78
MIN…..54   NORMAL…..61
MEAN….67   NORMAL…..70

DEPARTURE FROM 30-YEAR NORMAL……………………-3
TOTAL DEPARTURE FOR THE MONTH…………………..+93 [+3.8 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………2   DEPARTURE……….-3
TOTAL COOLING UNITS FOR THE MONTH………….235   DEPARTURE………+86
TOTAL COOLING UNITS FOR THE SEASON…………709   DEPARTURE……..+209
TOTAL COOLING UNITS LAST SEASON TO DATE…….600   DIFFERENCE…….+109

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….23 WSW  AT  2:17 P.M.
AEROVANE………………..21 WSW  AT  2:15 P.M.
ASOS……………………22 WSW  AT  2:16 P.M.
DAVIS…………………..21 WSW  AT 12:23 P.M.  RMY 23
FASTEST MILE FOR YESTERDAY…………………14 W    AT  3:10 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………15 W    AT  3:37 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..14 WSW  AT  2:17 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.0 WNW
ASOS…………………..8.9
DAVIS………………….8.0 W [260 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….1.53  DEPARTURE……-1.60
ASOS…………..1.52
TOTAL PRECIPITATION FOR THE YEAR……….24.72  DEPARTURE……-9.40
ASOS………….25.03

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

8/1  75/65/70/-2/0.02/320/37                 21 NE  AERO 20 ENE RMY 20
8/2  71/63/67/-5/0.12/000/00                 16 ENE AERO 16 ENE RMY 16
8/3  81/60/71/-1/0.00/603/70                 18 S   AERO 16 S   RMY 17
8/4  86/61/74/+2/0.00/833/97                 23 S   AERO 22 S   RMY 17
8/5  87/61/74/+2/0.00/823/96                 29 S   AERO 29 S   RMY 30
8/6  88/67/78/+6/T/419/49                    24 SSW AERO 23 SSW RMY 23
8/7  89/65/77/+5/0.00/784/92                 26 WNW AERO 25 WNW RMY 26
8/8  87/63/75/+3/0.00/816/96                 23 W   AERO 21 W   RMY 22
8/9  90/65/78/+6/0.00/789/93                 25 SSW AERO 24 SSW RMY 25
8/10 76/66/71/+0/0.28/017/02                 30 SSW AERO 31 SSW RMY 33
8/11 93/73/83/+12/T/666/79                   22 SSW AERO 21 SSW RMY 22
8/12 95/74/85/+14/0.00/487/58                30 SW  AERO 30 SW  RMY 31
8/13 77/67/72/+1/0.16/201/24                 25 NNW AERO 36 NNW RMY N/A TSTM
8/14 94/69/82/+11/0.39/701/84                39 SSW AERO 40 SSW RMY N/A TSTM
8/15 89/68/79/+8/0.00/758/91                 25 W   AERO 24 W   RMY 28
8/16 83/69/76/+5/0.02/125/15                 31 S   AERO 30 S   RMY N/A
8/17 84/68/76/+5/0.00/679/82                 38 W*  AERO 35 W   RMY 39
8/18 89/65/77/+6/T/635/77                    22 SW  AERO 20 SW  RMY 21
8/19 86/68/77/+7/0.00/674/82                 17 S   AERO 16 SSE RMY 17
8/20 86/65/76/+6/0.00/754/92                 25 S   AERO 23 S   RMY 25
8/21 87/63/75/+5/0.54/727/89                 25 S   AERO 22 SSE RMY N/A
8/22 78/59/69/-1/0.00/…/..                 31 NW  AERO 29 NW  RMY 32
8/23 80/54/67/-3/0.00/…/..                 23 WSW AERO 21 WSW RMY 23

8/24 Low temp since midnight is 62F; normal low is now 61F

DAILY RECORDS FOR AUGUST 2016
8/11/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 73F,
TIES PREVIOUS RECORD SET IN 1900 AND 1988

8/12/16: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 74F,
TIES PREVIOUS RECORD SET IN 1988

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR AUGUST 24
HIGH 92F IN 1947
LOW 43F IN 1971
PRECIP 2.40 INCHES IN 2010
PEAK GUST 54 MPH W IN 1986

RECORDS FOR AUGUST 25
HIGH 93F IN 1947, 1948, 2007
LOW 41F IN 1940
PRECIP 2.69 INCHES IN 2010
PEAK GUST 60e MPH SSW IN 1941

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Lizzy Suzedell