Friday, May 27, 2022

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

FRIDAY, MAY 27, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0413E
SUNSET:  1910E

WARM AND MUGGY WITH VERY LIMITED SUNSHINE…

Cloudy skies have been the theme here today – albeit
some breaks in the overcast have occured this afternoon.
A persistent SSW/SW wind is delivering very mild temperatures
and noticeably higher dew points. The average low for today
is 51F, but we could only manage bottoming out in the upper 50s.
The mercury has steadily risen since then topping out so far
at 76F. Dew points have also been on the climb – working through
the 50s and into the mid-60s!

With a small temperature/dew point delta, visibility has largely
been averaging 20-40 miles with the best sight occuring this
afternoon.

The high so far today is 76F, which is 6 degrees above the
normal maximum of 70F. The low since midnight is 57F, which
is 6 degrees above the normal minimum of 51F.

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Today’s Observations:

7 A.M.
Weather: Sky Obscured, Vertical Visibility 200 ft, Fog
Temperature: 64F; Dew Point: 63F; Relative Humidity: 96%
Wind: SSW @ 15G21 kts
Sea-level pressure: 1015.9 mb; 30.00 in. Hg: Falling, then rising
Visibility: 1 mile
6-hr Max temp: 64F
6-hr Min temp: 58F
24-hr Precip: 0.00 ins.
BHO SA 1155 X W2 1F 159/64/63/2015G21/000/ 8//// 55003 10064 20058

10 A.M.
Weather: Overcast Stratocumulus
Temperature: 69F; Dew Point: 65F; Relative Humidity: 88%
Wind: SSW @ 10G18 kts
Sea-level pressure: 1014.3 mb; 29.95 in Hg: Falling unsteadily
Visibility: 15 miles
3-hr Precip: Trace
BHO SA 1455 70 OVC 15 143/69/65/2010G18/995/ THN F ALQDS/ 8/5// 57016 6000/

1 P.M.
Weather: Overcast Stratocumulus (w/ few breaks)
Temperature: 75F, Dew point: 66F; Relative Humidity: 73%
Wind: SW @ 13G23 kts
Sea-level pressure: 1012.6 mb; 29.90 in Hg: Falling unsteadily
Visibility: 45 miles, hazy
6-hr Max temp: 76F
6-hr Min temp: 64F
6-hr Precip:  Trace
BHO SA 1755 25 OVC 45 126/75/66/2213G23/990/ FEW BINOVC ALQDS
HAZY/ 8/5// 57017 6000/ 10076 20064

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SUMMARY FOR THURSDAY, MAY 26, 2022

TEMPERATURE (DEGREES F)
MAX…….70     NORMAL…..69
MIN…….48     NORMAL…..51
MEAN……59     NORMAL…..60

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-1
TOTAL DEPARTURE FOR THE MONTH………………+55 [+1.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………..6  DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………202  DEPARTURE…….-28
TOTAL HEATING UNITS FOR THE SEASON……….5566  DEPARTURE……-551
TOTAL HEATING UNITS LAST SEASON TO DATE…..5511  DEPARTURE…….+55

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………..0  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH………….47  DEPARTURE…….+30
TOTAL COOLING UNITS FOR THE SEASON…………47  DEPARTURE…….+27
TOTAL COOLING UNITS LAST SEASON TO DATE…….26  DEPARTURE…….+21

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….34 SSW @  2:11 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..38     @  3:00 P.M.
DAVIS #2 ………………41 S   @  2:37 P.M.
RMY #2 (Instantaneous)…..38 SSW @  3:00 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………………26 SSW @  6:18 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..25     @ 12:26 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 S   @  2:15 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..26 SSW @  4:15 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…….14.9 SSW [358 total miles] VECTOR #2……………..15.4
DAVIS #2………………15.1 SSW
RMY #2………………..15.6 SSW
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…….0.00  DEPARTURE…..-0.13
TOTAL PRECIPITATION FOR THE MONTH………….0.78  DEPARTURE…..-2.37
TOTAL PRECIPITATION FOR THE YEAR………….17.06  DEPARTURE…..-4.87

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/…/..             30 ENE AERO N/A    RMY 30
5/25  73/47/60/0/0.00/…/..              25 S   AERO N/A    RMY 26
5/26  70/48/59/-1/0.00/…/..             34 SSW AERO N/A    RMY 38

5/27 The low since midnight is 57F, the daily normal low is 51F

DAILY RECORDS

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

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

RECORDS FOR MAY 27
HIGH 92F IN 1914
LOW 36F IN 1915
PRECIP 1.40 INS IN 1898
PEAK GUST 55 S IN 1956

RECORDS FOR MAY 28
HIGH 92F IN 2016
LOW 39F IN 1917
PRECIP 2.48 INS 1906
PEAK GUST 51e MPH NE IN 1946

TODAY’S REPORT PREPARED BY: Andrew Swanson