Thursday, June 3, 2021
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
THURSDAY JUNE 3, 2021
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0408E
SUNSET: 1916E
MOSTLY CLOUDY AND COOL WITH LIMITED VISIBILITY….
We’re experiencing a slightly cooler day today with mostly
clouds. There was some sun breaking through the clouds in
the afternoon hours.
There was a light wind this morning, but wind has picked up
slightly from the south. We are currently at an average of
20 mph with a max gust of almost 30 mph.
Visibility hasn’t been great today, generally hanging out
between 35-40 miles due to haziness.
The high so far today is 72F, which is a degree above the
normal high of 71F. The low since midnight is 56F, which is
3 degrees above the daily normal low of 53F.
PRELIMINARY STATS FOR MAY 2021
TEMPERATURE, Deg. F
Avg. Max. 68.1 [+1.8]Avg. Min. 48.0 [+0.2]Mean 58.1 [+1.0]24-hour corrected mean: 57.7
Max. for month: 87F on the 22nd, 23rd
Min. for month: 38F on the 1st
HEATING DEGREE DAYS
Total heating units: 237 [-31]Total for the season: 5578 [-725]Total for last season: 5812
PRECIPITATION, Inches
Total: 5.60 [+1.49]Greatest in 24 hrs: N/A
WIND, mph
Avg. uncorrected wind speed: 10.9 mph
Avg. corrected wind speed: 11.4 mph
Prevailing wind direction: WNW [16%]Peak gust and direction: 44 ENE on the 29th
SUNSHINE:
Campbell-Stokes card minutes: 14478 minutes of a possible 26226 or 55%
Astronomical total minutes: 14977 minutes of a possible 27188 or 55%
Today’s Observations:
7 A.M.
Weather: Overcast stratocumulus
Temperature: 60F; Dew Point: 56F; Relative Humidity: 85%
Wind: S @ 8 kts
Sea-level pressure: 30.13 in. Hg; rising then falling
Visibility: 50 miles
6-hr Max temp: 60F
6-hr Min temp: 56F
24-hr Precip: 0.00 ins.
BHO SA 1155 40 OVC 50 204/60/56/1908/013/ 8/8// 55000 10060
20056
10 A.M.
Weather: Broken stratocumulus, overcast altostratus
Temperature: 63F; Dew Point: 58F; Relative Humidity: 82%
Wind: S @ 7 kts
Sea-level pressure: 30.09 in Hg; falling steadily
Visibility: 50 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 40 BKN 100 OVC 50 191/63/58/1907/009/ 8/87/ 58013
1 P.M.
Weather: Broken stratocumulus and altocumulus
Temperature: 71F, Dew point: 63F; Relative Humidity: 75%
Wind: SSW @ 11G22 kts
Sea-level pressure: 30.03 in Hg; falling, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 72F
6-hr Min temp: 60F
6-hr Precip: 0.00 ins.
BHO SA 1755 40 BKN 140 BKN 35 170/71/63/2011G22/003/ HAZY/
8/870 56021 10072 20060
SUMMARY FOR WEDNESDAY, JUNE 2, 2021
TEMPERATURE (DEGREES F)
MAX…….80 NORMAL…..71
MIN…….55 NORMAL…..53
MEAN……68 NORMAL…..62
DEPARTURE FROM 30-YEAR (1981-2010) NORMAL…….+6
TOTAL DEPARTURE FOR THE MONTH……………….+6 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL THRU JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………… 0 DEPARTURE…… -5
TOTAL HEATING UNITS FOR THE MONTH…………… 3 DEPARTURE…… -7
TOTAL HEATING UNITS FOR THE SEASON…………5581 DEPARTURE…..-731
TOTAL HEATING UNITS LAST SEASON TO DATE…….5824 DEPARTURE…..-249
COOLING DEGREE DAYS (SEASON JAN THRU DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………… 3 DEPARTURE…….+1
TOTAL COOLING UNITS FOR THE MONTH…………… 3 DEPARTURE…….-0
TOTAL COOLING UNITS FOR THE SEASON…………..32 DEPARTURE…….+5
TOTAL COOLING UNITS LAST SEASON TO DATE………32 DEPARTURE……..0
PEAK WIND GUST (MPH):
420C/Official…………..28 S @ 4:48 P.M.
AEROVANE (south tower)…..25 S @ 5:17 P.M.
ASOS…………………..26 S @ 4:56 P.M.
DAVIS #1……………….26 S @ 5:17 P.M.
DAVIS #2 (south tower)…..34 SSE @ 5:17 P.M.
RMY……………………28 @ 4:55 P.M.
VECTOR…………………29 @ 5:15 P.M.
MERLIN…………………26
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………20 S @ 4:56 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….20 S @ 4:57 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………19 S @ 4:56 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 S @ 4:56 P.M.
MAXIMUM 2-MINUTE RMY AVERAGE………………..20 S @ 4:53 P.M.
MAXIMUM 2-MINUTE VECTOR AVERAGE……………..20 @ 4:53 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL…….9.4 S [225 total miles] ASOS………………….9.5
DAVIS #1………………9.3 SW
DAVIS #2……………..10.1 SW
RMY…………………..9.2 SSW
VECTOR………………..9.8
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…….0.00 DEPARTURE….-0.16
ASOS………….0.00
TOTAL PRECIPITATION FOR THE MONTH………….0.00 DEPARTURE….-0.33
ASOS………….0.00
TOTAL PRECIPITATION FOR THE YEAR………….20.66 DEPARTURE….-2.33
ASOS………..20.86
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 62/38/50/-3/0.06/0.0/659/78 31 WNW AERO 35 WNW RMY 40
05/02 76/48/62/+9/0.01/0.0/220/26 41 SW AERO 41 SW RMY 46
05/03 67/48/58/+5/0.07/0.0/400/47 21 E AERO 20 E RMY 20
05/04 50/44/47/-7/0.78/0.0/000/00 36 NNE AERO 32 NNE RMY 37
05/05 48/44/46/-8/0.47/0.0/000/00 18 ESE AERO 14 ESE RMY 17
05/06 64/45/55/+1/0.00/0.0/780/91 33 NW AERO 38 NNW RMY 39
05/07 61/43/52/-3/0.00/0.0/516/60 28 ESE AERO 22 ESE RMY 26
05/08 54/40/47/-8/0.00/0.0/069/08 24 SSW AERO 23 SSW RMY 25
05/09 66/42/54/-1/T/0.0/579/67 30 SW AERO 29 SW RMY 34
05/10 60/45/53/-2/0.39/0.0/078/09 21 W AERO 20 W RMY 20
05/11 63/45/54/-2/0.00/0.0/764/88 38 WNW AERO 41 WNW RMY 41
05/12 65/41/53/-3/0.00/0.0/722/83 28 NW AERO M M RMY 31
05/13 69/45/57/+1/0.00/0.0/759/87 22 WNW AERO 21 WNW RMY 21
05/14 76/49/63/+8/0.00/0.0/725/83 23 WNW AERO 23 WNW RMY 25
05/15 75/55/65/+8/0.01/0.0/569/65 24 SSE AERO 26 SSE RMY 26
05/16 78/54/66/+9/0.01/0.0/483/55 36 W AERO 37 W RMY 42
05/17 77/52/65/+8/0.00/0.0/722/82 20 SSW AERO 21 SSW RMY 21
05/18 81/54/68/+10/T/0.0/600/68 32 W AERO 30 W RMY 32
05/19 75/55/65/+7/0.00/0.0/778/88 25 NE AERO 23 NNE RMY 27
05/20 75/52/64/+6/0.00/0.0/842/95 18 ESE AERO 18 ESE RMY 19
05/21 78/50/64/+5/T/0.0/524/59 23 S AERO 22 S RMY 26
05/22 87/56/72/+13/T/0.0/285/32 25 WNW AERO 21 WNW RMY 24
05/23 87/58/73/+14/T/0.0/687/77 38 NNW AERO 37 NNW RMY 40
05/24 70/49/60/+1/0.00/0.0/839/94 30 S AERO 35 S RMY 33
05/25 75/47/61/+1/0.00/0.0/761/85 31 SW AERO 35 SW RMY 34
05/26 86/57/72/+12/0.21/0.0/736/82 30 S AERO 36 S RMY 35 TSTM
05/27 79/57/68/+8/0.02/0.0/691/77 25 N AERO 25 WNW RMY 27
05/28 58/43/51/-10/1.00/0.0/162/18 28 ENE AERO 32 ENE RMY 27
05/29 46/42/44/-17/1.50/0.0/000/00 44 ENE AERO 47 ENE RMY 50
05/30 46/45/46/-15/0.87/0.0/000/00 37 NE AERO 40 NE RMY 40
05/31 57/46/52/-9/0.20/0.0/027/03 22 NNE AERO 25 WNW RMY 25
RECORDS FOR THE MONTH:
Low maximum on the 30th of 46F, beating the old record of
51F set in 1996
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
M: Missing data
06/01 74/50/62/0/0.00/…/.. 20 WSW AERO 24 WSW RMY 22
06/02 80/55/68/+6/0.00/…/.. 28 S AERO 25 S RMY 28
06/03 The low since midnight is 56F, 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
