Thursday, June 3, 2021

| June 4, 2021 | Reply

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

Category: Daily Discussions

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