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Sunday, May 15, 2022

May 15, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, MAY 15, 2022 ALL TIMES ARE…

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

SUNDAY, MAY 15, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0423E
SUNSET:  1859E

RECORD WARMTH YESTERDAY, NOT QUITE AS WARM TODAY….

We tied the record high for yesterday with a reading of
85F being recorded, which tied the record set in 1961.

Yesterday also set a new record high minimum with a low
of 63F being recorded. This beat the previous record of
60F set in 1944.

Some much needed rainfall fell overnight, but only amounted
to 0.05″. So we’re still running a little over 1 inch
below normal for the month and a little more than 3.50″
below normal for the year to date.

As for today, we’ve seen considerably more cloud cover
than yesterday, as such the temperatures aren’t quite
as warm as yesterday with readings getting into the mid
70s. Still plenty warm for any outdoor activities this
afternoon.

A few showers and even a probable thunderstorm have been
observed off to the west and northwest of the Observatory
early this afternoon.

The low temperature today so far is 62F, this will likely
be another record high minimum for today’s date. The
previous record was 58F set in 1896, 1961, and 2004.

The high so far today is 76F, which is 9 degrees above the
normal maximum of 67F. The low since midnight is 62F, which
is 14 degrees above the normal minimum of 48F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Sky obscured, vertical visibility 200ft, light drizzle
Temperature: 62F; Dew Point: 62F; Relative Humidity: 100%
Wind: SSW @ 5 kts, wind light
Sea-level pressure: 1012.8 mb; 29.91 in. Hg: falling, then steady
Visibility: 1/8th mile, fog
6-hr Max temp: 64F
6-hr Min temp: 62F
24-hr Precip:  0.05 ins.
BHO SA 1155 X W2 1/8L-F 128/62/62/2005/991/ L-B45 PCPN VRY LGT
WND LGT/ 8//// 56001 6002/ 70005 10064 20062

10 A.M.
Weather: Overcast stratocumulus/cumulus, few breaks in overcast
all quadrants, virga distant WSW-WNW
Temperature: 70F; Dew Point: 62F; Relative Humidity: 76%
Wind: SSW @ 7 kts
Sea-level pressure: 1012.3 mb; 29.89 in Hg: falling, then more slowly
Visibility: 40 miles
3-hr Precip: Trace
BHO SA 1455 E20 OVC 40 123/70/62/2107/989/ FEW BINOVC ALQDS
VIRGA DSNT WSW-WNW/ 8/4// 56005 6000/

1 P.M.
Weather: Scattered cumulus fractus, broken stratocumulus/cumulus,
cumulonimbus distant NW, virga distant W-NW
Temperature: 75F, Dew point: 61F; Relative Humidity: 62%
Wind: SW @ 8 kts
Sea-level pressure: 1010.4 mb; 29.84 in Hg, falling, then more rapidly
Visibility: 50 miles
6-hr Max temp: 76F
6-hr Min temp: 62F
6-hr Precip:  Trace
BHO SA 1755 30 SCT E55 BKN 50 104/75/61/2208/984/ CB DSNT NW
VIRGA DSNT W-NW/ 8/360 58019 6000/ 10076 20062

————————————————————–

SUMMARY FOR SATURDAY, MAY 15, 2022

TEMPERATURE (DEGREES F)
MAX…….85R    NORMAL…..66
MIN…….63R    NORMAL…..48
MEAN……74     NORMAL…..57

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……+17
TOTAL DEPARTURE FOR THE MONTH………………-15 [-1.3 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………..0  DEPARTURE……..-9
TOTAL HEATING UNITS FOR THE MONTH…………164  DEPARTURE…….+21
TOTAL HEATING UNITS FOR THE SEASON……….5528  DEPARTURE……-502
TOTAL HEATING UNITS LAST SEASON TO DATE…..5500  DEPARTURE…….+28

COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………..9  DEPARTURE……..+8
TOTAL COOLING UNITS FOR THE MONTH………….13  DEPARTURE……..+6
TOTAL COOLING UNITS FOR THE SEASON…………13  DEPARTURE……..+3
TOTAL COOLING UNITS LAST SEASON TO DATE……..0  DEPARTURE…….+13

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….33 SW  @  5:22 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..34     @  5:07 P.M.
DAVIS #2 ………………31 SW  @  5:23 P.M.
RMY #2 (Instantaneous)…..34 SSW @  3:34 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………………24 SW  @  5:21 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..24     @  3:18 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………23 S   @  3:19 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..24 SSW @  3:18 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……..11.5 SW [275 total miles] VECTOR #2………………12.1
DAVIS #2……………….11.9 SW
RMY #2…………………12.1 SW
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…….0.05  DEPARTURE…..-0.06
TOTAL PRECIPITATION FOR THE MONTH………….0.63  DEPARTURE…..-1.05
TOTAL PRECIPITATION FOR THE YEAR………….16.91  DEPARTURE…..-3.55

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  68/48/58/+1/T/…/..                17 ENE AERO N/A    RMY 18
5/13  82/56/69/+12/0.00/…/..            33 SSW AERO N/A    RMY 34
5/14  85/63/74/+17/0.02/…/..            33 SW  AERO N/A    RMY 34

5/15  The low since midnight is 62F, the daily normal low is 48F

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

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

RECORDS FOR MAY 15
HIGH 93F IN 1900
LOW 36F IN 1947,1985
PRECIP 1.63 INCHES IN 1978
PEAK GUST 53e MPH NE IN 1978, W 2002

RECORDS FOR MAY 16
HIGH 90F IN 1951
LOW 30F IN 1936
PRECIP 2.63 INCHES IN 1954
PEAK GUST 56e MPH NW IN 1952

TODAY’S REPORT PREPARED BY: Matt Douglas

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

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Effective January 1, 2025 · Milton, Massachusetts · bluehill.org
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