Thursday, May 26, 2022

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

THURSDAY, MAY 26, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0413E
SUNSET:  1910E

SEASONABLE WITH INCREASING WIND ATOP GREAT BLUE HILL….

Today was partly cloudy with visibility dropping from
75 miles this morning to 40 miles by noontime due to
haze. Wind also picked up around noontime, with an
average speed of over 15 mph from the southwest. The
max gust so far is 34 mph!

Temperatures are close to normal for this time of year.

The high so far today is 70F, which is a degree above the
normal maximum of 69F. The low since midnight is 48F, which
is 3 degrees below the normal minimum of 51F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Broken altocumulus and cirrus
Temperature: 55F; Dew Point: 44F; Relative Humidity: 66%
Wind: S @ 8 kts
Sea-level pressure: 1028.1 mb; 30.36 in. Hg: rising, then more slowly
Visibility: 75 miles
6-hr Max temp: 55F
6-hr Min temp: 48F
24-hr Precip: 0.00 ins.
BHO SA 1155 180 BKN 250 BKN 75 281/55/44/1808/036/ 8/079
51006 10055 20048

10 A.M.
Weather: Scattered cirrus, few cumulus
Temperature: 66F; Dew Point: 40F; Relative Humidity: 38%
Wind: S @ 11G20 kts
Sea-level pressure: 1026.7 mb; 30.32 in Hg: rising, then falling
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 250 SCT 70 267/66/40/1811G20/032/ FEW AC ALQDS/
8/031 58014

1 P.M.
Weather: Thin broken cirrus, few cumulus
Temperature: 67F, Dew point: 42F; Relative Humidity: 39%
Wind: SSW @ 16G28 kts, peak of 32 mph SSW @ 12:54 P.M.
Sea-level pressure: 1024.2 mb; 30.24 in Hg, falling, then more
rapidly
Visibility: 40 miles, hazy
6-hr Max temp: 70F
6-hr Min temp: 56F
6-hr Precip:  0.00 ins.
BHO SA 1755 250 -BKN 40 242/67/42/2016G28/024/ FEW CU ALQDS HAZY PK
WND 2028/54/ 8/101 58025 10070 20056

————————————————————–

SUMMARY FOR WEDNESDAY, MAY 25, 2022

TEMPERATURE (DEGREES F)
MAX…….73     NORMAL…..69
MIN…….47     NORMAL…..51
MEAN……60     NORMAL…..60

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….0
TOTAL DEPARTURE FOR THE MONTH………………+56 [+2.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….5   DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………196  DEPARTURE…….-28
TOTAL HEATING UNITS FOR THE SEASON……….5560  DEPARTURE……-551
TOTAL HEATING UNITS LAST SEASON TO DATE…..5511  DEPARTURE…….+49

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…….+31
TOTAL COOLING UNITS FOR THE SEASON…………47  DEPARTURE…….+28
TOTAL COOLING UNITS LAST SEASON TO DATE…….19  DEPARTURE…….+27

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….25 S   @  7:25 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..25     @  7:25 P.M.
DAVIS #2 ………………28 S   @  6:27 P.M.
RMY #2 (Instantaneous)…..26 S   @  7:06 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………………18 S   @  6:30 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19     @  4:25 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 S   @  6:29 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 S   @  4:25 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……..7.9 S [190 total miles] VECTOR #2………………8.7
DAVIS #2……………….8.4 SSW
RMY #2…………………8.8 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…..-2.23
TOTAL PRECIPITATION FOR THE YEAR………….17.06  DEPARTURE…..-4.73

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  The low since midnight is 48F, 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 26
HIGH 94F IN 2010
LOW 37F IN 1972,2013
PRECIP 1.73 INS IN 2003
SNOWFALL TRACE IN 1967 (Fell as ice pellets in nor’easter)
PEAK GUST 62 MPH NE IN 1967

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

TODAY’S REPORT PREPARED BY: Benjamin Turner