Tuesday, June 6, 2017
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JUNE 6, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME
GUSTY MORNING WINDS, LIGHT RAIN CONTINUES THROUGH AFTERNOON
Winds out of the Northeast were gusting up to 40 MPH
this morning causing small branches to be knocked down.
They had calmed slightly by afternoon but were still
gusting over 30 MPH. Precip was heavy in the early morning
hours and changed over to light rain which has continued
through the rest of the day. Precip measured 1.77 inches
at 7:00AM EST. An additional 0.32 inches had fallen by 1:00PM.
The maximum temperature of 49F occurred at midnight and is
1F higher than today’s record low maximum temperature of
48F set in 1926.
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: Light rain, sky obscurement due to fog
Temperature: 47F; Dew Point: 47F; Wind: NE at 15G24 kts,
Peak wind: 30 kts (35 MPH) NE at 6:19AM EST
Sea-level pressure: 29.80 ins. Hg, rising unsteadily
Visibility: 1/4 mile
6-hr Max temp: 48F
6-hr Min temp: 47F
24-hr precip: 1.77 in.
BHO SA 1155 W3 X 1/4R-F 091/47/47/0515G24/980/ PK WND 0530/19/
8//// 52011 MANUAL 70177 ASOS 70182 10048 20047
10 A.M.
Weather: Light rain, sky obscurement due to fog
Temperature: 46F; Dew Point: 46F; Wind: NE at 14G25 kts,
Peak wind: 28 kts (32 MPH) NE at 8:59AM EST
Sea-level pressure: 29.82 ins. Hg, falling then rising
Visibility: 1/8 mile
3-hr precip: 0.16 in.
BHO SA 1455 W3 X 1/8R-F 098/46/46/0414G25/982/ PK WND 0528/59/
8//// 53007 MANUAL 6016/ ASOS 60018
1 P.M.
Weather: Light rain, sky obscurment due to fog
Temperature: 45F; Dew Point: 45F; Wind: NE at 15G24 kts
Sea-level pressure: 29.82 ins. Hg, rising then falling
Visibility: 1/2 mile, except 2 miles ESE-SSE
6-hr Max temp: 48F
6-hr Min temp: 45F
6-hr precip: 0.32 in.
BHO SA 1755 W3 X 1/2R-F 097/45/45/0415G24/982/ VSBY ESE-SSE 2/
8//// 58001 MANUAL 6032/ ASOS 60036 10048 20045
SUMMARY FOR MONDAY, JUNE 5, 2017
TEMPERATURE (DEGREES F)
MAX…..55 NORMAL…..72
MIN…..49 NORMAL…..54
MEAN….52 NORMAL…..63
DEPARTURE FROM 30-YEAR NORMAL……………………-11
TOTAL DEPARTURE FOR THE MONTH……………………-16 [-3.4 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..13 DEPARTURE……….+9
TOTAL HEATING UNITS FOR THE MONTH…………..31 DEPARTURE……….+9
TOTAL HEATING UNITS FOR THE SEASON………..5693 DEPARTURE……..-632
TOTAL HEATING UNITS LAST SEASON TO DATE……5256 DIFFERENCE…….+437
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………0 DEPARTURE……….-2
TOTAL COOLING UNITS FOR THE MONTH……………2 DEPARTURE……….-7
TOTAL COOLING UNITS FOR THE SEASON………….58 DEPARTURE………+25
TOTAL COOLING UNITS LAST SEASON TO DATE……..54 DEPARTURE……….+4
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….32 NE AT 11:31 P.M.
AERO……………………35 NE AT 11:54 P.M.
ASOS……………………35 NE AT 11:33 P.M.
DAVIS…………………..32 ENE AT 10:41 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY…………………24 NE AT 10:08 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………24 ENE AT 9:35 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..22 NE AT 10:08 P.M.
AVERAGE WIND SPEED AND DIRECTION………….13.4 ENE
ASOS………………….13.2
DAVIS…………………11.4 E [080 deg.]
*Last of multiple occurrences
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….1.77 DEPARTURE……+1.60
ASOS…………..1.82
TOTAL PRECIPITATION FOR THE MONTH……….2.30 DEPARTURE……+1.47
ASOS…………..2.35
TOTAL PRECIPITATION FOR THE YEAR……….27.64 DEPARTURE……+4.15
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 Low temp since midnight is 47F; normal low is now 54F
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 6
HIGH 95F IN 1925
LOW 42F IN 1885, 1894, 1920, 1945
PRECIP 3.61 INS IN 2000
PEAK GUST 58 MPH NE IN 2000
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
TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle, Nick Rousseau
