Wednesday, June 7, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 7, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
CONDITIONS CLEAR BY LATE MORNING, CLEAR SKIES IN AFTERNOON
Another 0.34 inches of rain was measured at 7:00AM EST bringing
the storm total to 2.89 inches and the monthly total to 2.96
inches. This precip. event brought over half of the normal
amount of precip. for the entire month of June, which is 4.31
inches. Conditions began clearing early in the day with few
clouds by the 1:00PM observation. Visibility ranged from
35-70 miles. Temperatures have still been below normal for
the day with a max. at 1:00PM of 63F and still rising.
PRELIMINARY STATS FOR MAY 2017
TEMPERATURE, Deg. F
Avg. Max. 63.5 [-2.8]
Avg. Min. 47.1 [-0.7]
Mean 55.3 [-1.8]
24-hour corrected mean: 54.9
Max. for month: 96F on 18th
Min. for month: 36F on 9th
HEATING DEGREE DAYS
Total heating units: 329 [+61]
Total for the season: 5662 [-641]
Total for last season: 5248
PRECIPITATION, Inches
Total: 4.53 [+0.42]
Greatest in 24 hrs: 1.67 in. on 13th-14th
SNOWFALL, Inches
Total: 0.0
Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 10.6
Avg. corrected wind speed: 11.1
Prevailing wind direction: S at 14%
Peak gust and direction: 46 SSE on 6th
SUNSHINE:
Campbell-Stokes card minutes: 9,570 minutes of possible 26,226 or 36%
Astronomical total minutes: 9,911 minutes of possible 27,196 or 36%
*Sunshine corrected on June 5.
Today’s Observations:
7 A.M.
Weather: Patches of fog drifting below the summit, two layers
of broken stratus
Temperature: 50F; Dew Point: 50F; Wind: NNW at 7 kts
Sea-level pressure: 29.96 ins. Hg, rising unsteadily
Visibility: 70 miles, except 35 miles SSE-SSW
6-hr Max temp: 50F
6-hr Min temp: 47F
24-hr precip: 0.66 in.
BHO SA 1155 E4 BKN 69 BKN 70 146/50/50/3407/996/ VSBY SSE-SSW 35
PTCHS FG DRFTNG BLO SMT/ 8/600 52011 MANUAL 70066 ASOS 70071
10050 20047
10 A.M.
Weather: Few cumulus in all directions, broken altostratus
Temperature: 59F; Dew Point: 52F; Wind: N at 7 kts
Sea-level pressure: 29.98 ins. Hg, rising then more slowly
Visibility: 70 miles
BHO SA 1455 E85 BKN 70 154/59/52/0107/998/ FEW CU ALQDS/ 8/110 51008
1 P.M.
Weather: few cumulus SSE-N, few alto-cumulus E-SW
Temperature: 63F; Dew Point: 46F; Wind: NE at 7G16 kts
Sea-level pressure: 29.98 ins. Hg, falling then more quickly
Visibility: 40 miles, except 60 miles N-SE
6-hr Max temp: 63F
6-hr Min temp: 50F
BHO SA 1755 CLR 40 152/63/46/0407G16/998/
FEW CU SSE-N FEW AS E-SW VSBY N-SE 60/ 8/110 58002 10063 20050
SUMMARY FOR TUESDAY, JUNE 6, 2017
TEMPERATURE (DEGREES F)
MAX…..49 NORMAL…..72
MIN…..45 NORMAL…..54
MEAN….47 NORMAL…..63
DEPARTURE FROM 30-YEAR NORMAL……………………-16
TOTAL DEPARTURE FOR THE MONTH……………………-32 [-5.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..18 DEPARTURE………+14
TOTAL HEATING UNITS FOR THE MONTH…………..49 DEPARTURE………+23
TOTAL HEATING UNITS FOR THE SEASON………..5711 DEPARTURE……..-618
TOTAL HEATING UNITS LAST SEASON TO DATE……5256 DIFFERENCE…….+455
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE……….-2
TOTAL COOLING UNITS FOR THE MONTH……………2 DEPARTURE……….-9
TOTAL COOLING UNITS FOR THE SEASON………….58 DEPARTURE………+23
TOTAL COOLING UNITS LAST SEASON TO DATE……..61 DEPARTURE……….-3
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….40 ENE AT 3:24 A.M.
AERO……………………43 ENE AT 5:33 A.M.
ASOS……………………43 ENE AT 3:25 A.M.
DAVIS…………………..40 E AT 8:41 A.M. RMY 43
FASTEST MILE FOR YESTERDAY…………………29 ENE AT 3:25 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………29 ENE AT 8:48 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..27 NE AT 3:25 A.M.
AVERAGE WIND SPEED AND DIRECTION………….16.9 NE
ASOS………………….16.2
DAVIS…………………14.8 NE [040 deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.66 DEPARTURE……+0.49
ASOS…………..0.71
TOTAL PRECIPITATION FOR THE MONTH……….2.96 DEPARTURE……+1.96
ASOS…………..3.06
TOTAL PRECIPITATION FOR THE YEAR……….28.30 DEPARTURE……+4.64
ASOS……………N/A ***
*** ASOS annual total not available due to erroneous readings
PRELIMINARY CLIMATE SUMMARY FOR MAY 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
5/1 50/43/47/-6/T/034/04 21 N AERO 18 N RMY 22
5/2 65/42/54/+1/0.26/136/16 41 W AERO 44 W RMY 43
5/3 52/42/53/0/0.00/595/70 37 WNW*AERO 39 WNW RMY 40
5/4 65/40/53/-1/0.00/724/85 23 S AERO 23 S RMY 24
5/5 51/44/48/-6/0.73/000/00 28 E AERO 28 E RMY N/A
5/6 65/50/58/+4/0.23/094/11 46 SSE AERO 48 SSE RMY 49
5/7 63/47/55/0/T/670/78 35 S AERO 38 S RMY 39
5/8 54/38/46/-9/T/224/26 29 WSW AERO 29 WSW RMY 32
5/9 53/36/45/-10/T/251/29 20 ESE AERO 17 ESE RMY 19
5/10 57/42/50/-5/0.00/225/26 17 NNE AERO 16 NW RMY N/A
5/11 58/45/52/-4/0.00/443/51 23 NE* AERO 23 NE RMY 23
5/12 57/41/49/-7/0.01/453/52 21 NE AERO 20 NE RMY 19
5/13 57/41/49/-7/0.19/009/01 24 ENE AERO 24 E RMY N/A
5/14 47/43/45/-12/1.49/000/00 33 NNE AERO 36 N RMY 36
5/15 58/43/51/-6/0.24/018/02 36 NNW AERO 40 NNW RMY 41
5/16 79/51/65/+8/0.00/870/99 26 WNW AREO 26 WNW RMY 29
5/17 90/60/75/+18/T/775/88 32 SSE AERO 33 SW* RMY 34
5/18 96/69/83/+25/0.01/830/94 39 WNW AERO 41 WNW RMY 42 TSTM
5/19 89/56/73/+15/T/814/92 35 W AERO 33 W RMY 37
5/20 67/49/58/0/0.00/709/80 23 NE AERO 22 NE RMY 21
5/21 66/45/56/-3/0.00/773/87 21 E AERO 20 S RMY 21
5/22 53/48/51/-8/0.18/000/00 22 S AERO 22 S RMY 23
5/23 70/51/61/+2/0.01/366/41 21 NNW AERO 18 NNW RMY 19
5/24 65/53/59/0/0.00/116/13 17 E AERO 16 E RMY N/A
5/25 53/49/51/-9/0.66/000/00 36 E AERO 38 E RMY N/A TSTM
5/26 56/46/51/-9/0.44/000/00 35 N AERO 37 N RMY N/A
5/27 67/51/59/6/0.00/449/50 18 SE AERO 18 SE RMY 19
5/28 71/51/61/0/T/333/37 18 SSW*AERO 18 SSW RMY 18
5/29 51/46/49/-12/0.07/000/00 21 E AERO 20 ENE*RMY 20
5/30 61/46/54/-7/0.00/000/00 20 S AERO 22 S RMY 21
5/31 70/52/61/0/0.01/000/00 28 W AERO 29 W RMY 29
PRELIMINARY CLIMATE SUMMARY FOR MAY 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
6/1 78/55/67/+5/0.06/…/.. 39 NW AERO 39 NW RMY 41
6/2 70/50/60/-2/T/…/.. 32 WNW AERO 35 WNW RMY 34
6/3 66/47/57/-5/0.01/…/.. 23 NW AERO 25 NW RMY 24
6/4 71/49/60/-3/…./…/.. 21 SSE*AERO 21 SW RMY N/A
6/5 55/49/52/-11/…./000/00 32 NE AERO 35 NE RMY N/A
6/6 49/45/47/-16/…./000/00 40 ENE AERO 43 ENE RMY 43
6/7 Low temp since midnight is 47F; normal low is now 55F
DAILY RECORDS FOR MAY
5/17/17: DAILY RECORD MAXIMUM TEMPERATURE OF 90F,
BREAKS PREVIOUS RECORD OF 88F SET IN 1974
AND TIED IN 1977
5/17/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F,
TIES PREVIOUS RECORD SET IN 1932
5/18/17: DAILY RECORD MAXIMUM TEMPERATURE OF 96F,
BREAKS PREVIOUS RECORD OF 88F SET IN 1906
AND TIED IN 1936 AND 1986;
BREAKS PREVIOUS MONTHLY RECORD OF 94F SET ON
MAY 26, 2010
5/18/17: DAILY RECORD HIGH MINIMUM TEMPERATURE OF 69F,
BREAKS PREVIOUS RECORD OF 61F SET IN 1943
DAILY RECORDS FOR JUNE
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR JUNE 7
HIGH 93F IN 1999
LOW 40F IN 1932
PRECIP 4.01 INS IN 2006
PEAK GUST 58 MPH NE IN 1982
RECORDS FOR JUNE 8
HIGH 94F IN 1984
LOW 37F IN 1932
PRECIP 1.53 INS IN 1947
PEAK GUST 86e MPH WNW IN 1946 [Record for month]
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle, Nick Rousseau
