Wednesday, June 3, 2020

BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 3, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

MOSTLY CLOUDY WITH INTERMITTENT SUNSHINE
ATOP GREAT BLUE HILL….

A few light rain showers moved through last evening
bringing only 0.01 inches of rain to the hill. Today
was mostly cloudy with some breaks of sunshine,
mostly in the morning hours. Wind was light and
southwesterly, with an average speed under 10 mph.
Visibility started at 65 miles, moving down to 40
miles by the 1 P.M. observation due to a distant
haze.

The high so far today is 77 degrees, this is 6 degrees
above the daily normal high of 71F. The low since midnight
is 55F, which is 2 degrees above the daily normal low
of 53F.

Today’s Observations:

7 A.M.
Weather: Broken cumulus, broken altocumulus
Temperature: 61F; Dew Point: 53F; Relative Humidity: 74%
Wind: SW at 9 kts
Sea-level pressure: 29.64 ins. Hg: falling steadily
Visibility: 65 miles
6-hr Max temp: 61F
6-hr Min temp: 55F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
BHO SA 1155 E50 BKN 85 BKN 65 037/61/53/2409/964/ 8/880
70001 58013 10061 20055

10 A.M.
Weather: Scattered altocumulus, broken cirrus, few
cumulus
Temperature: 72F; Dew Point: 56F; Relative Humidity: 57%
Wind: SSW at 7 kts
Sea-level pressure: 29.60 ins. Hg: falling steadily
Visibility: 65 miles
3-hr Precip:  0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 160 SCT E250 BKN 65 023/72/56/2107/960/ FEW
CU ALQDS/ 8/122 58014

1 P.M.
Weather: Scattered stratocumulus, overcast altostratus
Temperature: 76F; Dew Point: 60F; Relative Humidity: 58%
Wind: SW at 7 kts
Sea-level pressure: 29.55 ins. Hg: falling, then more rapidly
Visibility: 40 miles, distant haze
6-hr Max temp: 77F
6-hr Min temp: 61F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
BHO SA 1755 55 SCT E150 BKN 40 006/76/60/2307/955/ DSNT HZ
ALQDS/ 8/42/ 56017 10077 20061

SUMMARY FOR TUESDAY, JUNE 2, 2020

TEMPERATURE (DEGREES F)
MAX…..72   NORMAL…..71
MIN…..45   NORMAL…..53
MEAN….59   NORMAL…..62

DEPARTURE FROM 30-YEAR NORMAL…………….. -3
TOTAL DEPARTURE FOR THE MONTH……………..-12 [-6.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………….6  DEPARTURE……..+1
TOTAL HEATING UNITS FOR THE MONTH……………18  DEPARTURE……. +8
TOTAL HEATING UNITS FOR THE SEASON…………5830  DEPARTURE……-482
TOTAL HEATING UNITS LAST SEASON TO DATE…….6222  DEPARTURE……-392

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH…………… 0  DEPARTURE……. -3
TOTAL COOLING UNITS FOR THE SEASON…………..32  DEPARTURE……..+5
TOTAL COOLING UNITS LAST SEASON TO DATE……….8  DEPARTURE…….+24

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..28 W   AT  4:08 P.M.
AERO…………………….27 W   AT  4:03 P.M.
ASOS…………………….27 WSW AT  4:03 P.M.
DAVIS……………………29 W   AT  2:55 P.M. RMY 28
FASTEST MILE FOR YESTERDAY………………….21 W   AT  4:24 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….20 W   AT  4:03 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………21 W   AT  4:24 P.M.
AVERAGE WIND SPEED AND DIRECTION……………. 8.4 W
ASOS……………………. 8.7
DAVIS…………………….8.8 W [269 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01  DEPARTURE……-0.15
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….0.01  DEPARTURE……-0.32
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE YEAR……….19.80  DEPARTURE……-3.19
ASOS………….20.32

PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

05/01  64/52/58/+5/…./0.0/000/00         46 SSE  AERO 44 SSE RMY N/A
05/02  70/42/56/+3/…./0.0/729/86         41 NW   AERO 40 NW  RMY N/A
05/03  78/55/67/+14/0.00/0.0/613/72        35 SSW  AERO 35 SSW RMY 36
05/04  72/45/59/+5/T/0.0/247/29            37 NW   AERO 40 WNW RMY 39
05/05  60/40/50/-4/0.00/0.0/821/96         31 NW   AERO 32 NW  RMY N/A
05/06  57/38/48/-6/T/0.0/498/58            24 ESE  AERO 22 ENE RMY 22
05/07  63/37/50/-5/0.00/0.0/576/67         30 WSW  AERO 29 WSW RMY N/A
05/08  57/40/49/-6/…./0.0/328/38         31 W    AERO 32 W   RMY N/A
05/09  44/32/38/-17/…./T/484/56          52 W    AERO 53 W   RMY 54
05/10  59/31/45/-10/0.00/0.0/763/88        46 W    AERO 46 W   RMY 49
05/11  65/43/54/-2/0.22/0.0/322/37         39 S    AERO 43 S   RMY 41
05/12  55/37/46/-10/0.00/0.0/801/92        37 W    AERO 37 W   RMY 37
05/13  59/32/46/-10/0.00/0.0/864/99        37 WNW  AERO 37 WNW RMY 38
05/14  70/40/55/-2/0.00/0.0/831/95         29 W    AERO 26 W   RMY 27
05/15  78/50/64/+7/…./0.0/535/61         40 WSW  AERO 40 WSW RMY 43
05/16  69/47/58/+1/…./0.0/730/83         31 NW   AERO 31 NW  RMY 32
05/17  67/47/57/0/0.00/0.0/132/15          22 SSW  AERO N/A    RMY 21
05/18  60/47/54/-4/T/0.0/053/06            24 W    AERO 22 ENE RMY N/A
05/19  56/45/51/-7/0.00/0.0/797/90         35 ENE  AERO 34 ENE RMY 32
05/20  63/43/53/-5/0.00/0.0/869/98         22 ESE  AERO 20 SE  RMY 19
05/21  76/42/59/0/0.00/0.0/862/97          26 S    AERO 25 S   RMY 25
05/22  82/50/66/+7/0.00/0.0/864/97         29 W    AERO 29 W   RMY 28
05/23  67/44/56/-3/0.02/0.0/187/21         42 ENE  AERO 43 ENE RMY 40
05/24  58/43/51/-8/T/0.0/822/92            27 ENE  AERO 24 ENE RMY N/A
05/25  66/46/56/-4/0.00/0.0/…/..         18 ENE  AERO 18 ENE RMY N/A
05/26  82/56/69/+9/0.00/0.0/…/..         21 S    AERO 21 S   RMY 21
05/27  84/59/72/+12/0.00/0.0/…/..        31 SSW  AERO 31 SSW RMY 31
05/28  77/63/70/+9/…./0.0/…/..         33 SSW  AERO 33 S   RMY 33
05/29  78/66/72/+11/…./…/…/..        41 SSW  AERO 41 SSW RMY 43
05/30  79/63/71/+10/…./…/…/..        30 S    AERO 30 S   RMY N/A
05/31  67/45/56/-5/0.00/0.0/…/..         33 WNW  AERO 33 WNW RMY 32

DAILY RECORDS FOR MAY 2020

5/13/2020: NEW RECORD LOW OF 32F, REPLACING 35F SET IN
1914 AND 2005

PRELIMINARY CLIMATE SUMMARY FOR JUNE CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

06/01  64/42/53/-9/T/0.0/…/..            28 WNW  AERO 29 WNW RMY 28
06/02  72/45/59/-3/…./…/..             28 W    AERO 27 W   RMY 28

06/03 The low since midnight is 55F, the daily normal low is 53F

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JUNE 3
HIGH 98F IN 1919
LOW 38F IN 1929
PRECIP 2.40 INS 2006
PEAK GUST 47 MPH NW IN 1998

RECORDS FOR JUNE 4
HIGH 99F IN 1919 [Record for month] LOW 41F IN 1915,1926
PRECIP 1.52 INS IN 2007
PEAK GUST 48 MPH SSE IN 1983

TODAY’S REPORT PREPARED BY: Benjamin Turner