Saturday, June 4, 2022

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

SATURDAY, JUNE 4, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0409E
SUNSET:  1917E

LIMITED VISIBILITY WITH CONDITIONS WARMING UP
SIGNIFICANTLY….

Today, we saw a temperature jump of 17 degrees between the
7 A.M. and 1 P.M. observations. Visibility was limited due
to fog or haze, with the maximum being 50 miles at 1 P.M.
Skies are partly cloudy, and dew points are in the mid-50’s.
Conditions are representative of an early summers’ day.

The high so far today is 72F, which is the same as the
normal maximum. The low since midnight is 52F, which
2 degrees below the normal minimum of 54F.

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PRELIMINARY STATS FOR MAY 2022

TEMPERATURE, Deg. F
Avg. Max. 70.0 [+3.2] Avg. Min. 50.5 [+2.3] Mean      60.3 [+2.8] 24-hour corrected mean: 58.9
Max. for month: 93F on the 22nd
Min. for month: 39F on the 9th

HEATING DEGREE DAYS
Total heating units:    202 [-056] Total for the season:  5566 [-579] Total for last season: 5578

COOLING DEGREE DAYS
Total cooling units:     60 [+035] Total for the season:    60 [+032] Total for last season:   29

PRECIPITATION, Inches
Total: 1.30 [-2.52] Greatest in 24 hrs: 0.44 on the 2nd-3rd

SNOWFALL, Inches
Total: 0.0 [0.0] 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:   SSW [17%] Peak gust and direction:  48 ENE on the 7th

SUNSHINE:
Campbell-Stokes card minutes: 14910 of a possible 26226, or 57%
Astronomical total minutes: 15469 of a possible 27179, or 57%

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Today’s Observations:

7 A.M.
Weather: Fog
Temperature: 55F; Dew Point: 55F; Relative Humidity: 100%
Wind: NNE @ 2 kts, light and variable
Sea-level pressure: 1012.4 mb; 29.89 in. Hg: rising then
falling
Visibility: 3/4 mile, fog
6-hr Max temp: 55F
6-hr Min temp: 52F
24-hr Precip: 0.06 inches
BHO SA 1155 X W3 3/4F 124/55/55/0202/989/ WND L/V/ 8//// 50005
70006 10055 20052

10 A.M.
Weather: Broken stratocumulus
Temperature: 60F; Dew Point: 54F; Relative Humidity: 81%
Wind: S @ 3 kts, light and variable
Sea-level pressure: 1012.0 mb; 29.88 in Hg: falling, then more
slowly
Visibility: 50 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 20 BKN 50 120/60/54/1803/988/ WND L/V/ 8/800 56004

1 P.M.
Weather: Scattered cumulus
Temperature: 70F, Dew point: 58F; Relative Humidity: 65%
Wind: S @ 5 kts (wind light)
Sea-level pressure: 1010.9 mb; 29.85 in Hg: falling, then
more rapidly
Visibility: 35 miles (haze)
6-hr Max temp: 72F
6-hr Min temp: 54F
6-hr Precip: 0.00 ins.
BHO SA 1755 20 SCT 35 109/70/58/1805/985/ HAZY WND LGT/ 8/100
58011 10072 20054

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SUMMARY FOR FRIDAY, JUNE 3, 2022

TEMPERATURE (DEGREES F)
MAX…….64     NORMAL…..71
MIN…….52     NORMAL…..54
MEAN……58     NORMAL…..63

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-4
TOTAL DEPARTURE FOR THE MONTH……………….-11 [-3.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………….7  DEPARTURE……..+3
TOTAL HEATING UNITS FOR THE MONTH……………20  DEPARTURE………6
TOTAL HEATING UNITS FOR THE SEASON…………5586  DEPARTURE……-572
TOTAL HEATING UNITS LAST SEASON TO DATE…….5581  DEPARTURE……..+5

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….0  DEPARTURE……..-2
TOTAL COOLING UNITS FOR THE MONTH…………….0  DEPARTURE……..-6
TOTAL COOLING UNITS FOR THE SEASON…………..60  DEPARTURE…….+27
TOTAL COOLING UNITS LAST SEASON TO DATE………32  DEPARTURE…….+28

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….22 ENE @  7:40 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..23     @  7:39 P.M.
DAVIS #2 ………………21 E   @  7:40 P.M.
RMY #2 (Instantaneous)…..22 ENE @  7:39 P.M.
ASOS………..OUT OF SERVICE D/T RENOVATIONS
VECTOR #1……OUT OF SERVICE D/T RENOVATIONS
DAVIS #1…….OUT OF SERVICE D/T RENOVATIONS
RMY #1………OUT OF SERVICE D/T RENOVATIONS
MERLIN………OUT OF SERVICE D/T RENOVATIONS

FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………14 ENE @  7:40 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14     @  7:40 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 ENE @  7:40 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 ENE @  7:40 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……..OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE….OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…OUT OF SERVICE D/T RENOVATIONS
MAXIMUM 2-MINUTE RMY #1 AVERAGE……OUT OF SERVICE D/T RENOVATIONS

AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……..5.3 ENE [126 total miles] VECTOR #2………………5.6
DAVIS #2……………….5.7 E
RMY #2…………………5.9 ENE
RMY #1……….OUT OF SERVICE D/T RENOVATIONS
ASOS…………OUT OF SERVICE D/T RENOVATIONS
VECTOR #1…….OUT OF SERVICE D/T RENOVATIONS
DAVIS #1……..OUT OF SERVICE D/T RENOVATIONS

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.06  DEPARTURE…..-0.09
TOTAL PRECIPITATION FOR THE MONTH…………..0.14  DEPARTURE…..-0.33
TOTAL PRECIPITATION FOR THE YEAR…………..17.72  DEPARTURE…..-5.35

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

5/01  69/40/55/+2/0.00/786/93             25 SSE AERO 25 SSE RMY 27
5/02  58/42/50/-4/0.21/059/07             21 NE  AERO 19 NE  RMY 20
5/03  57/43/50/-4/0.23/229/27             23 ENE AERO 22 ENE RMY 24
5/04  52/45/49/-5/0.14/000/00             19 NW  AERO 18 SE  RMY 19
5/05  70/46/58/+3/0.00/666/78             23 NNW AERO 21 NNW RMY 23
5/06  63/49/56/+1/0.00/051/06             20 S   AERO 18 S   RMY 21
5/07  49/42/46/-9/0.00/112/13             48 ENE AERO 51 ENE RMY 50
5/08  51/40/46/-9/0.00/621/72             43 ENE AERO N/A    RMY 47
5/09  54/39/47/-9/0.00/838/97             43 ENE AERO N/A    RMY 46
5/10  57/43/50/-6/0.00/866/100            44 ENE AERO N/A    RMY 46
5/11  58/43/51/-5/0.00/182/21             36 NE  AERO N/A    RMY 38
5/12  68/48/58/+1/T/487/56                17 ENE AERO N/A    RMY 18
5/13  82/56/69/+12/0.00/619/71            33 SSW AERO N/A    RMY 34
5/14  85/63/74/+17/0.02/621/71            33 SW  AERO N/A    RMY 34
5/15  78/62/70/+13/0.03/394/45            23 SW  AERO N/A    RMY 24
5/16  83/58/71/+13/0.07/623/71            40 SSW AERO N/A    RMY 45 TSTM
5/17  74/53/64/+6/T/722/82                44 W   AERO N/A    RMY 47
5/18  73/49/61/+3/0.00/803/91             39 NW  AERO N/A    RMY 41
5/19  60/52/56/-2/T/000/00                26 S   AERO N/A    RMY 28
5/20  75/49/62/+3/0.05/390/44             27 S   AERO N/A    RMY 28
5/21  86/57/72/+13/0.03/426/48            32 SSW AERO N/A    RMY 33
5/22  93/68/81/+22/T/792/89               40 NNW AERO N/A    RMY 41 TSTM
5/23  73/56/65/+6/0.00/437/49             33 N   AERO N/A    RMY 34
5/24  62/48/55/-5/0.00/643/72             30 ENE AERO N/A    RMY 30
5/25  73/47/60/0/0.00/743/83              25 S   AERO N/A    RMY 26
5/26  70/48/59/-1/0.00/664/74             34 SSW AERO N/A    RMY 38
5/27  79/57/68/+8/T/278/31                39 SW  AERO N/A    RMY 39
5/28  73/59/66/+5/0.28/063/07             27 SW  AERO N/A    RMY 27
5/29  77/53/65/+4/0.00/792/88             21 S   AERO N/A    RMY 22
5/30  86/57/72/+11/0.00/812/90            28 WSW AERO N/A    RMY 29
5/31  81/52/67/+5/0.24/750/83             39 ENE AERO N/A    RMY 39 TSTM

DAILY RECORDS FOR MAY:

05/14/2022: NEW HIGH MINIMUM TEMPERATURE RECORD OF 63F,
PREVIOUS RECORD WAS 60F SET IN 1944.

05/14/2022: TIED RECORD HIGH OF 85F, PREVIOUSLY SET IN 1961

05/15/2022: NEW RECORD HIGH MINIMUM WAS SET OF 62F,
PREVIOUS RECORD WAS 58F set in 1896, 1961, and 2004.

05/22/2022: NEW HIGH MINIMUM TEMPERATURE RECORD OF 68F,
PREVIOUS RECORD WAS 67F SET IN 1992.

05/22/2022: TIED RECORD HIGH OF 93F, PREVIOUSLY SET IN 1911

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

6/01  62/52/57/-5/…./…/..             21 SSW AERO N/A    RMY 22
6/02  67/53/60/-2/…./…/…            20 S   AERO N/A    RMY 21
6/03  64/52/58/-7/…./…/..             22 ENE AERO N/A    RMY 22
6/04 The low since midnight is 52F, the daily normal low is 54F

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

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

RECORDS FOR JUNE 5
HIGH 95F IN 1930
LOW 41F IN 1891
PRECIP 2.83 INS IN 1982
PEAK GUST 57 MPH NNW IN 1988

TODAY’S REPORT PREPARED BY: Benjamin Turner