Sunday, July 22, 2018
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JULY 22, 2018
ALL TIMES ARE IN EASTERN STANDARD TIME
0.13 INS. OF RAIN AT GREAT BLUE HILL
Since last night, 0.13 ins. of precipitation has fallen at Blue
Hill Observatory. It was very foggy this morning, as the visibility
was only 1/16 mile, but it improved to 30 miles by the 1:00 P.M.
EST observation when the clouds were lifting. At that time, there
was a layer of broken stratocumulus and another of overcast altostratus.
The maximum temperatures have been a little bit cooler than yesterday’s.
The maximum reached yesterday was 76F, but so far today, it was only 73F.
Yesterday’s average ended up being 4F below normal and today’s average
will likely be below normal as well. Another difference in weather today
is the wind speeds, which have been higher. The peak gust yesterday was
23 MPH out of the ENE at 2:48 P.M., while today, the peak was 29 MPH out
of the SSE at 8:28 A.M.
Today’s Observations:
7 A.M.
Weather: Drizzle
Temperature: 68F; Dew Point: 68F; Wind: ESE at 14G25 kts
Sea-level pressure: 30.06 ins. Hg, falling, then steady
Visibility: 1/16 mile, fog
6-hr Max temp: 68F
6-hr Min temp: 62F
24-hr Precip: 0.05 ins.
BHO SA 1155 W3 X 1/16LF 180/68/68/1114G25/006/ 8//// 56003
10068 20062 MANUAL 70005 ASOS 70004
10 A.M.
Weather: Light rain, overcast stratus
Temperature: 71F; Dew Point: 71F; Wind: ESE at 8G14 kts
Sea-level pressure: 30.19 ins. Hg, rising, then falling
Visibility: 6 miles, fog
3-hr Precip: 0.05 ins.
BHO SA 1455 E004 OVC 6R-F 187/71/71/1108G14/008/ 8/6// 53007
MANUAL 6005/ ASOS 60007
1 P.M.
Weather: Very light drizzle, broken stratocumulus, overcast altostratus
Temperature: 72F; Dew Point: 71F; Wind: SSE at 12G15 kts
Sea-level pressure: 30.10 ins. Hg, rising steadily
Visibility: 30 miles, distant fog in all directions
6-hr Max temp: 73F
6-hr Min temp: 68F
6-hr precip: 0.08 ins.
BHO SA 1755 E008 BKN 110 OVC 20L- 194/72/71/1512G15/010/ PCPN VRY LGT
DSNT FG ALQDS/ 8/52/ 53007 10073 20068 MANUAL 6008/ ASOS 60009
SUMMARY FOR SATURDAY, JULY 21, 2018
TEMPERATURE (DEGREES F)
MAX…..76 NORMAL…..81
MIN…..59 NORMAL…..63
MEAN….68 NORMAL…..72
DEPARTURE FROM 30-YEAR NORMAL…………………….-4
TOTAL DEPARTURE FOR THE MONTH……………………+49 [+2.1 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………3 DEPARTURE……….-5
TOTAL COOLING UNITS FOR THE MONTH………….187 DEPARTURE………+42
TOTAL COOLING UNITS FOR THE SEASON…………346 DEPARTURE………+72
TOTAL COOLING UNITS LAST SEASON TO DATE…….385 DEPARTURE………-39
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..23 ENE AT 2:48 P.M.
AERO…………………….20 ENE AT 2:27 P.M.
ASOS…………………….23 ENE AT 2:49 P.M.
DAVIS……………………22 ENE AT 2:32 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY………………….17 E AT 11:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….16 E AT 11:59 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………17 E AT 11:58 P.M.
AVERAGE WIND SPEED AND DIRECTION……………8.7 E
ASOS……………………9.1
DAVIS…………………..9.1 ESE [118 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.05 DEPARTURE……-0.08
ASOS…………..0.04
TOTAL PRECIPITATION FOR THE MONTH……….2.70 DEPARTURE……+0.11
ASOS…………..2.73
TOTAL PRECIPITATION FOR THE YEAR……….32.87 DEPARTURE……+3.49
ASOS………….34.46
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
7/01 94/72/83/+13/0.00/667/73 21 ESE AERO 18 ESE RMY 19
7/02 90/68/79/+9/0.00/858/94 21 S AERO 21 S RMY 22
7/03 94/69/82/+11/0.00/657/72 20 SSW AERO 18 SW RMY 19 TSTM
7/04 89/73/81/+10/0.00/884/97 17 NE AERO 15 NE RMY 16
7/05 91/73/82/+11/0.00/865/95 29 SSW AERO 28 SSW RMY N/A
7/06 80/59/70/-1/0.56/018/02 37 NNW AERO 38 SW RMY 40 TSTM
7/07 78/54/66/-5/0.00/900/99 22 N AERO 18 N RMY N/A
7/08 83/57/70/-2/0.00/890/98 23 S AERO 21 S RMY 22
7/09 88/60/74/+2/0.00/852/94 23 SW AERO 23 SW RMY 24
7/10 91/63/77/+5/0.10/751/83 24 W AERO 22 W RMY N/A
7/11 73/62/68/-4/0.63/705/78 28 NE AERO 25 NE RMY 27 TSTM
7/12 77/56/67/-5/0.00/…/.. 16 NW AERO 15 NW RMY N/A
7/13 84/61/73/+1/0.00/…/.. 23 SSE AERO 23 SSE RMY 24
7/14 80/61/71/-1/0.00/…/.. 18 S AERO 16 S RMY 19
7/15 84/65/75/+3/T/…/.. 16 S AERO 15 S RMY 14
7/16 83/67/75/+3/0.00/…/.. 23 S AERO 23 S RMY 23
7/17 88/67/78/+6/1.34/…/.. 31 SW AERO 30 SW RMY 32 TSTM
7/18 81/63/72/0/0.02/…/.. 21 NW AERO 22 NW RMY 23
7/19 80/56/68/-4/0.00/…/.. 21 S AERO 17 SSE RMY 19
7/20 83/62/73/1/0.00/…/.. 21 SE AERO 17 ESE RMY 19
7/21 76/59/68/-4/…./…/.. 23 ENE AERO 20 ENE RMY N/A
7/22 Low temp since midnight is 62F; normal low is now 63F
DAILY RECORDS FOR JULY 2018
07/01/18: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 72F,
TIES PREVIOUS RECORD OF 72F SET IN 1968
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 22
HIGH 99F IN 1926, 2011
LOW 52F IN 1890
PRECIP 1.73 INCHES IN 1900
PEAK GUST 55 MPH IN 1983
RECORDS FOR JULY 23
HIGH 99F IN 1952
LOW 51F IN 1923,1977
PRECIP 1.82 INS IN 1953
PEAK GUST 54e MPH S IN 1946
TODAY’S REPORT PREPARED BY: Lizzy Suzedell
