Wednesday, July 6, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JULY 6, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
HOT, DRY, AND SUNNY DAY AS TEMPERATURES REACH 90F
Temperatures were quick to rise today from a morning low of 68F
to a 7:00AM EST observation temp. of 74F. By 1:00PM EST, the max.
temp. for the day was 90F. Dew points remained in the 60s providing
us with moderate humidity.
Little moisture also meant few clouds as the skies were mostly clear
for the morning. Few cirrus began developing in the late morning.
Skies became partly cloudy by the 1:00PM EST observation.
The final heating degree day total for the 2015-2016
season is 5282. This is the second lowest on record.
BHO Warmest July-June Temperature, deg F (1885-2016):
1) 52.5 in 2011-2012
2) 52.0 in 2015-2016
3) 51.0 in 1990-1991
4) 50.9 in 2001-2002
5) 50.6 in 1998-1999
BHO Fewest July-June Heating Degree Days, (1885-2016):
1) 4984 in 2011-2012
2) 5282 in 2015-2016
3) 5338 in 2001-2002
4) 5458 in 1990-1991
5) 5633 in 1998-1999
Sunshine duration for June totaled 301.6 hours
(sun card hours) or 69 percent of the possible bright
sunshine. This makes the month the seventh sunniest
since 1886.
BHO Sunniest June, hours (1886-2016):
1) 336.5 in 1971 [76%] 2) 335.5 in 1908 [76%] 3) 327.4 in 1953 [74%] 4) 322.6 in 1949 [73%] 5) 313.7 in 1912 [71%] 6) 309.1 in 1965 [70%] 7) 301.6 in 2016 [69%] 8) 295.7 in 1978 [68%] 9) 295.3 in 1979 [68%] 10) 293.7 in 1901 [67%]
PRELIMINARY STATS FOR JUNE 2016
TEMPERATURE, Deg. F
Avg. Max. 77.3 [+2.3]
Avg. Min. 57.2 [+0.1]
Mean 67.3 [+1.2]
24-hour corrected mean: 66.6
Max. for month: 86 on 26th and 30th
Min. for month: 48 on 9th
HEATING DEGREE DAYS
Total heating units: 34 [-39]
Total for the season: 5282 [-1094] (Final seasonal total)
Total for last season: 6505
COOLING DEGREE DAYS
Total cooling units: 109 [+4]
Total for the season: 157 [+28]
Total for last season: 138
PRECIPITATION, Inches
Total: 1.62 [-2.69]
Greatest in 24 hrs: 0.76 in. on 5th
WIND, mph
Avg. uncorrected wind speed: 11.2
Avg. corrected wind speed: 11.6
Prevailing wind direction: S at 24%
Peak gust and direction: 41 WNW on 8th, 41 W on 12th
SUNSHINE:
Campbell-Stokes card minutes: 18096 mins. of possible 26376 or 69%
Astronomical total minutes: 18822 mins. of possible 27423 or 69%
Today’s Observations:
7 A.M.
Weather: Few cirrus NW-E
Temperature: 74F; Dew Point: 63F; Wind: WNW at 9 kts
Sea-level pressure: 29.84 in. Hg, rising, then less quickly
Visibility: 30 miles, distant haze
6-hr Max temp: 74F
6-hr Min temp: 68F
24-hr precip: 0.12 in.
BHO SA 1155 CLR 30 106/74/63/3009/984/ FEW CI NW-E DSNT HZ/ 8/001 51014
ASOS 70012 MANUAL 70012 10074 20068
10 A.M.
Weather: Few cumulus in all directions, few cirrus WSW-E
Temperature: 85F; Dew Point: 61F; Wind: estimated NW at 3 kts,
Wind: Light and variable
Sea-level pressure: 29.84 in. Hg, steady
Visibility: 35 miles, distant haze
BHO SA 1455 CLR 35 106/85/61/E3103/984/ FEW CU ALQDS FEW CI WSW-E DSNT HZ
WND L/V/ 8/101 50000
1 P.M.
Weather: Scattered cumulus, scattered cirrus
Temperature: 90F; Dew Point: 60F; Wind: SSW at 9G16 kts
Sea-level pressure: 29.84 in. Hg, rising, then falling
Visibility: 35 miles, distant haze
6-hr Max temp: 90F
6-hr Min temp: 74F
BHO SA 1755 59 SCT 250 SCT 35 104/90/60/2109G16/984/ DSNT HZ/
8/101 58002 10090 20074
SUMMARY FOR TUESDAY, JULY 5, 2016
TEMPERATURE (DEGREES F)
MAX…..80 NORMAL…..80
MIN…..65 NORMAL…..62
MEAN….73 NORMAL…..71
DEPARTURE FROM 30-YEAR NORMAL…………………….+2
TOTAL DEPARTURE FOR THE MONTH…………………….+9 [+1.6 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………8 DEPARTURE……….+2
TOTAL COOLING UNITS FOR THE MONTH…………..37 DEPARTURE……….+6
TOTAL COOLING UNITS FOR THE SEASON…………194 DEPARTURE………+34
TOTAL COOLING UNITS LAST SEASON TO DATE…….161 DIFFERENCE……..+33
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….16 S AT 12:22 A.M.
ASOS……………………17 SSW AT 12:26 A.M.
DAVIS…………………..16 S AT 12:28 A.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………12 S AT 12:21 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………13 SSW AT 12:49 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..12 S AT 12:18 A.M.
AVERAGE WIND SPEED AND DIRECTION…………..5.7 S
ASOS…………………..6.0
DAVIS………………….5.4 SSE [160 Deg.]
* Last of several occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.12 DEPARTURE……+0.01
ASOS…………..0.12
TOTAL PRECIPITATION FOR THE MONTH……….0.49 DEPARTURE……-0.05
ASOS…………..0.46
TOTAL PRECIPITATION FOR THE YEAR……….22.18 DEPARTURE……-5.33
ASOS………….22.58
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
6/1 71/54/63/+1/0.00/860/95 26 NE AERO 30 NE RMY N/A
6/2 68/54/61/-1/0.00/444/49 21 NE AERO 22 NE RMY 21
6/3 70/57/64/+2/T/173/19 16 SSW AERO 17 SSW RMY 16
6/4 81/61/71/+8/0.00/491/54 18 S AERO 21 S RMY 20
6/5 67/60/64/+1/0.76/000/00 32 SSE AERO 36 SSE RMY 34
6/6 80/63/72/+9/0.00/747/82 26 W AERO 28 W RMY 27
6/7 83/58/71/+7/0.18/602/66 32 WNW AERO 36 WNW RMY 33 TSTM
6/8 72/52/62/-2/0.05/684/75 37 WNW AERO 41 WNW RMY 38 TSTM
6/9 67/48/58/-6/0.00/466/51 41 WNW AERO 45 WNW RMY 40
6/10 71/50/61/-4/0.00/823/90 25 W AERO 28 W RMY 26
6/11 68/52/60/-5/0.06/155/17 30 SSW AERO 35 SSW RMY 31
6/12 76/51/64/-1/T/558/61 41 W AERO 48 W RMY 42
6/13 70/49/60/-5/0.00/641/70 36 NW AERO 46 NW RMY 38
6/14 77/50/64/-2/0.00/889/97 32 NNW AERO 38 NNW RMY 33
6/15 83/60/72/+6/0.00/852/93 22 NW AERO 26 NW RMY 25
6/16 82/62/72/+6/0.00/660/72 26 E AERO 28 E RMY 27
6/17 77/59/68/+1/T/834/91 25 E AERO 28 E RMY 23 TSTM
6/18 75/55/65/-2/0.00/899/98 22 SSW AERO 24 SSE RMY N/A
6/19 79/55/67/+0/0.00/807/88 32 S AERO 35 S RMY 36
6/20 81/57/69/+1/0.00/871/95 25 S AERO 28 S RMY 27
6/21 82/61/72/+1/0.40/596/65 30 WSW AERO 31 W* RMY 33 TSTM
6/22 79/59/69/+1/0.01/495/54 31 NW AERO 35 NW RMY 31
6/23 84/56/70/+2/0.00/642/70 17 S AERO 18 S RMY 18
6/24 77/58/68/-1/0.00/889/97 20 NE AERO 21 NE RMY 20
6/25 80/60/70/+1/0.00/889/97 16 ENE AERO 17 ENE RMY 16
6/26 86/59/73/+4/0.00/870/95 25 S AERO 26 S RMY 26
6/27 84/60/72/+3/T/641/70 32 S AERO 35 S* RMY 34
6/28 77/66/72/+2/0.15/018/02 26 S AERO 29 S RMY 27
6/29 85/66/76/+6/0.01/439/48 28 WNW AERO 28 WNW RMY 29 TSTM
6/30 86/63/75/+5/0.00/887/97 17 WSW AERO 18 WSW*RMY 19
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
7/1 84/67/76/+6/0.20/…/.. 32 S AERO 35 S RMY 34 TSTM
7/2 76/61/69/-1/0.00/…/.. 31 W AERO 34 W RMY 32
7/3 83/57/70/-1/0.00/…/.. 23 W AERO 23 W RMY 23
7/4 87/61/74/+3/0.00/…/.. 28 SSW AERO 28 SSW RMY 28
4/5 80/65/73/+2/0.29/…/.. 16 S AERO 16 S RMY N/A
7/6 low temp since midnight is 68F; normal low now 62F
DAILY RECORDS FOR JUNE 2016
None
DAILY RECORDS FOR JULY 2016
None so far
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JULY 6
HIGH 99F IN 2010
LOW 47F IN 1979
PRECIP 1.43 INS IN 2005
PEAK GUST 56e MPH NNW IN 1942, 56 MPH WNW IN 1999
RECORDS FOR JULY 7
HIGH 97F IN 1908,1993
LOW 48F IN 1902
PRECIP 2.11 INS IN 1966
PEAK GUST 55 MPH NW IN 1989
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle
