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Thursday, May 12, 2022

May 12, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA THURSDAY, MAY 12, 2022 ALL TIMES ARE…

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

THURSDAY, MAY 12, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0426E
SUNSET:  1856E

WARMER AND MOSTLY CLOUDY WITH GOOD VISIBILITY FOLLOWING
A MORNING FOG….

Today feels like a hard shift into summer where the observatory
barely had a spring. Wind is light with speeds under 10 mph. It
is a light and cool sea breeze as the wind is coming from the
east.

Visibility is good at 75 miles despite a bit of fog and
some very light drizzle this morning. Liquid measurements
amounted to a trace.

The high so far today is 67F, which is a degree above the
normal maximum of 66F. The low since midnight is 47F, which
is the same as the normal minimum.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Very light drizzle
Temperature: 54F; Dew Point: 54F; Relative Humidity: 100%
Wind: ENE @ 7 kts
Sea-level pressure: 1027.8 mb; 30.35 in. Hg: rising, then
more rapidly
Visibility: 1/16th mile, fog
6-hr Max temp: 54F
6-hr Min temp: 47F
24-hr Precip:  0.00 ins.
BHO SA 1155 X W2 1/16L-F 278/54/54/0707/035/ PCPN VRY LGT/
8//// 53013 70000 10054 20047

10 A.M.
Weather: Overcast stratus with very light drizzle
Temperature: 58F; Dew Point: 56F; Relative Humidity: 92%
Wind: E @ 7 kts
Sea-level pressure: 1028.6 mb; 30.38 in Hg: rising, then
more slowly
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 20 OVC 70L- 286/58/56/0907/038/ PCPN VRY LGT/
8/6// 51008 6000/

1 P.M.
Weather: Broken cirrostratus, few stratocumulus
Temperature: 66F, Dew point: 56F; Relative Humidity: 70%
Wind: E @ 9 kts
Sea-level pressure: 1028.3 mb; 30.37 in Hg, falling then rising
Visibility: 75 miles
6-hr Max temp: 67F
6-hr Min temp: 54F
6-hr Precip:  Trace
BHO SA 1755 250 BKN 75 283/66/56/0909/037/ FEW SC ALQDS/ 8/806
55003 6000/ 10067 20054

————————————————————–

SUMMARY FOR WEDNESDAY, MAY 11, 2022

TEMPERATURE (DEGREES F)
MAX…….58     NORMAL…..66
MIN…….43     NORMAL…..47
MEAN……51     NORMAL…..56

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…… -5
TOTAL DEPARTURE FOR THE MONTH………………-45 [-4.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….14  DEPARTURE……..+5
TOTAL HEATING UNITS FOR THE MONTH…………157  DEPARTURE…….+40
TOTAL HEATING UNITS FOR THE SEASON……….5521  DEPARTURE……-483
TOTAL HEATING UNITS LAST SEASON TO DATE…..5478  DEPARTURE…….+43

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………..0  DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH…………..0  DEPARTURE……..-5
TOTAL COOLING UNITS FOR THE SEASON………….0  DEPARTURE……..-8
TOTAL COOLING UNITS LAST SEASON TO DATE……..0  DEPARTURE………0

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….36 NE  @  7:25 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..40     @  6:31 A.M.
DAVIS #2 ………………35 NE  @  7:25 A.M.
RMY #2 (Instantaneous)…..38 NE  @  6:31 A.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………………24 NE  @  7:26 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24     @  7:26 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………24 ENE @  7:26 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 NE  @  7:26 A.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……..11.8 NE [283 total miles] VECTOR #2………………12.2
DAVIS #2……………….12.2 ENE
RMY #2…………………11.9 NE
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……TRACE  DEPARTURE…..-0.12
TOTAL PRECIPITATION FOR THE MONTH………….0.58  DEPARTURE…..-0.76
TOTAL PRECIPITATION FOR THE YEAR………….16.86  DEPARTURE…..-3.26

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/…/..             44 ENE AERO N/A    RMY 46
5/11  58/43/51/-5/0.00/…/..             36 NE  AERO N/A    RMY 38

5/12  The low since midnight is 47F, the daily normal low is 47F

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

RECORDS FOR MAY 12
HIGH 88F IN 2001
LOW 29F IN 1907
PRECIP 1.49 INCHES IN 1968
SNOW TRACE IN 2019
PEAK GUST 76 MPH S IN 1974

RECORDS FOR MAY 13
HIGH 85F IN 1947
LOW 32F IN 2020
PRECIP 2.39 INCHES IN 2006
PEAK GUST 49 MPH NNW IN 1965

TODAY’S REPORT PREPARED BY: Benjamin Turner

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Please read the full Policy before accessing Observatory data · Effective January 1, 2025

Notice: By accessing, downloading, or using any Blue Hill Observatory data or services, you unconditionally accept and agree to be bound by this Policy in its entirety. If you do not agree, you may not access or use Observatory data.
Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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