Friday, July 14, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JULY 14, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
ANOTHER HUMID AND COLD DAY ATOP GREAT BLUE HILL
An overnight rainstorm left 0.05 inches of precipitation.
Light rain continued on and off all day but only a trace was
measured during observation times. Skies remained overcast all
day. Temperatures continued to be chilly today with a high of 62F
which could potentially be a daily record for min high temperature.
This is well below the normal daily temperature of 81F.
Winds were light for most of the day and continued from the
north-northeast. Humidity was also high today never falling
below 90% during observation times.
Today’s Observations:
7 A.M.
Weather: Overcast stratus, few cumulus all directions
Temperature: 59F; Dew Point: 55F; Wind: NE at 6 kts,
Wind:light
Sea-level pressure: 30.13 ins. Hg, steady then falling
Visibility: 35 miles
6-hr Max temp: 59F
6-hr Min temp: 57F
24-hr precip: 0.05 inches
BHO SA 1155 E54 OVC 35 204/59/55/0506/013/ FEW CU ALQDS DSNT FG
E-NNW WND LGT/ 8/6// 58002 MANUAL 70005 ASOS 70004 10059 20057
10 A.M.
Weather: Light rain, broken stratus, overcast nimbostratus,
few cumulus NNE
Temperature: 60F; Dew Point: 58F; Wind: E at 9 kts
Sea-level pressure: 30.13 ins. Hg, rising then falling
Visibility: 35 miles
BHO SA 1455 E24 BKN 90 OVC 35 204/60/58/0809/013/ FEW CU NNE/
8/62/ 58000 MANUAL 600//
1 P.M.
Weather: Overcast stratus
Temperature: 61F; Dew Point: 59F; Wind: NNE at 4 kts,
Wind: light
Sea-level pressure: 30.13 ins. Hg, rising then falling
Visibility: 35 miles
6-hr Max temp: 62F
6-hr Min temp: 59F
3-hr precip: trace
BHO SA 1755 E15 OVC 35 202/61/59/0704/013/ WND LGT/ 8/6// 58002
MANUAL 600// 10062 20059
SUMMARY FOR THURSDAY, JULY 13, 2017
TEMPERATURE (DEGREES F)
MAX…..68 NORMAL…..81
MIN…..55 NORMAL…..63
MEAN….62 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL……………………-10
TOTAL DEPARTURE FOR THE MONTH……………………+16 [+1.1 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE………+10
TOTAL COOLING UNITS FOR THE MONTH………….101 DEPARTURE………+16
TOTAL COOLING UNITS FOR THE SEASON…………302 DEPARTURE………+88
TOTAL COOLING UNITS LAST SEASON TO DATE…….235 DEPARTURE………+67
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….28 NNE AT 6:11 P.M.
AERO……………………28 NE AT 5:25 P.M.
ASOS……………………29 NNE AT 5:29 P.M.
DAVIS…………………..26 NE AT 5:28 P.M. RMY 29
FASTEST MILE FOR YESTERDAY…………………21 NE AT 5:24 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………21 NE AT 5:32 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 NNE AT 5:31 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.1 NE
ASOS…………………..9.4
DAVIS………………….8.0 NNE [33 DEG.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.05 DEPARTURE……+0.09
ASOS…………..0.04
TOTAL PRECIPITATION FOR THE MONTH……….1.51 DEPARTURE……-0.01
ASOS…………..1.48
TOTAL PRECIPITATION FOR THE YEAR……….32.88 DEPARTURE……+4.39
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
7/1 85/67/76/+6/T/439/48 35 S AERO 37 S RMY 38
7/2 87/69/78/+8/T/785/86 25 W* AERO 28 W* RMY 27
7/3 85/67/76/+5/0.00/894/98 28 W* AERO 29 W RMY 30
7/4 84/62/73/+2/0.00/783/86 17 W AERO 17 W RMY 18
7/5 82/62/72/+1/0.00/855/94 20 S AERO 20 ENE RMY 20
7/6 82/60/71/+0/0.00/664/73 21 SSW AERO 22 SSW RMY 21
7/7 71/60/66/-5/0.63/000/00 28 ENE AERO 28 ENE RMY 27
7/8 84/61/73/+1/0.15/…/.. 30 SW* AERO 32 SSW RMY 33
7/9 81/60/71/-1/0.00/…/.. 26 W AERO 26 W RMY 26
7/10 85/63/74/+2/T/…/.. 25 SW AERO 25 S RMY 26
7/11 82/66/74/+2/0.25/…/.. 24 S AERO 24 S RMY N/A
7/12 85/68/77/+5/0.43/…/.. 23 NE AERO 22 NE RMY 23
7/13 68/55/62/-10/0.05/…/.. 28 NNE AERO 28 NE RMY 29
7/13 Low temp since midnight is 55F; normal low is now 63F
DAILY RECORDS FOR JULY
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 14
HIGH 98F IN 1952
LOW 51F IN 1895, 1937
PRECIP 1.97 INS IN 1960
WIND 110e MPH NW IN 1942 [RECORD FOR MONTH]
RECORDS FOR JULY 15
HIGH 94F IN 1995
LOW 50F IN 1929, 1930
PRECIP 1.64 INS IN 1896
WIND 71 MPH WNW IN 2002
TODAY’S REPORT PREPARED BY: Kaitlin Geagan
