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Sunday, May 1, 2022

May 1, 2022

BLUE HILL METEOROLOGICAL OBSERVATORY MILTON, MASSACHUSETTS ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA SUNDAY, MAY 1, 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 1, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0439E
SUNSET:  1844E

VERY FINE WEATHER TODAY WITH PLENTY OF SUN AND MILD TEMPERATURES….

Doesn’t get much better than this. Wall to wall sunshine with
light and variable wind. Temperatures are very comfortable with
readings in the mid 60s. So far Blue Hill has been able to avoid
the sea-breeze despite the fact wind speeds are generally under
6mph.

While the weather is excellent for outdoor activity, the lack of
rainfall the past couple of months is making for rather dry
conditions. A large brush fire is currently on-going about 4 miles
ENE of Blue Hill within the Blue Hills Reservation.

Visibility has been excellent today, holding at around 70 miles.

The high so far today is 66F, which is 3 degrees above the
normal maximum of 63F. The low since midnight is 40F, which
is 4 degrees below the normal minimum of 44F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Clear
Temperature: 47F; Dew Point: 33F; Relative Humidity: 58%
Wind: NNW @ 5 kts, wind light
Sea-level pressure: 1020.6 mb; 30.14 in. Hg: Rising steadily
Visibility: 60 miles
6-hr Max temp: 47F
6-hr Min temp: 40F
24-hr Precip:  0.00 ins.
BHO SA 1155 CLR 60 206/47/33/3305/014/ WND LGT/ 8/000 52013 10047 20040

10 A.M.
Weather: Clear, few small cumulus distant E-S,
few cirrus distant SSW-WNW
Temperature: 59F; Dew Point: 31F; Relative Humidity: 34%
Wind: NNW @ 5 kts, wind light and variable
Sea-level pressure: 1020.3 mb; 30.13 in Hg: falling, then steady
Visibility: 70 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 70 203/59/31/3305/013/ FEW SML CU DSNT E-S
FEW CI DSNT SSW-WNW WND L/V/ 8/101 56003

1 P.M.
Weather: Clear, few small cumulus S, few cirrus distant S-WNW,
smoke plume ENE
Temperature: 65F, Dew point: 34F; Relative Humidity: 31%
Wind: SSW @ 5 kts, wind light and variable
Sea-level pressure: 1018.2 mb; 30.07 in Hg: falling, then more rapidly
Visibility: 70 miles
6-hr Max temp: 66F
6-hr Min temp: 47F
6-hr Precip:  0.00 ins.
BHO SA 1755 CLR 70 182/65/34/2105/007/ FEW SML CU S FEW CI DSNT S-WNW
K PLUME ENE WND L/V/ 8/101 58021 10066 20047

————————————————————–

SUMMARY FOR SATURDAY, APRIL 30, 2022

TEMPERATURE (DEGREES F)
MAX…….58     NORMAL…..63
MIN…….34     NORMAL…..43
MEAN……46     NORMAL…..53

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-7
TOTAL DEPARTURE FOR THE MONTH………………+34 [+0.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….19  DEPARTURE……..+7
TOTAL HEATING UNITS FOR THE MONTH…………501  DEPARTURE…….-39
TOTAL HEATING UNITS FOR THE SEASON……….5364  DEPARTURE……-523
TOTAL HEATING UNITS LAST SEASON TO DATE…..5341  DEPARTURE…….+23

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

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….24 NNW @ 10:56 A.M.
AEROVANE……………….23 NNW @ 10:53 A.M.
VECTOR #2 (Instantaneous)..25     @ 10:56 A.M.
DAVIS #2 ………………23 NNW @ 10:56 A.M.
RMY #2 (Instantaneous)…..24 NNW @ 10:56 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………………15 NNW @ 10:57 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17     @ 10:56 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 N   @ 10:58 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 NNW @ 10:56 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…….. 7.7 NNW [185 total miles] VECTOR #2……………… 8.3
DAVIS #2………………. 8.0 N
RMY #2………………… 8.2 NNW
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…..-0.14
TOTAL PRECIPITATION FOR THE MONTH………….2.97  DEPARTURE…..-1.79
TOTAL PRECIPITATION FOR THE YEAR………….16.28  DEPARTURE…..-2.50

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE…….0.0
TOTAL SNOWFALL FOR THE MONTH……………..TRACE  DEPARTURE……-2.8
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..70.7  DEPARTURE……+1.0

PRELIMINARY CLIMATE SUMMARY FOR APRIL CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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

4/01  57/35/46/+5/0.41/0.0/183/24         56 WNW AERO 55 WNW RMY 58
4/02  52/34/43/+2/0.00/0.0/697/91         45 WNW AERO 43 WNW RMY 47
4/03  51/36/44/+2/0.03/0.0/215/28         23 NE  AERO 18 NE  RMY 23
4/04  56/35/46/+4/0.02/0.0/610/79         35 NW  AERO 30 NW  RMY 34
4/05  62/37/50/+7/0.00/0.0/698/90         25 SSW AERO 24 S   RMY 25
4/06  44/39/42/-1/0.22/0.0/000/00         33 ENE AERO 32 E   RMY 34
4/07  52/38/45/+1/0.06/0.0/000/00         50 ESE AERO 50 ESE RMY 53
4/08  61/42/52/+8/0.24/0.0/470/60         45 ESE AERO 45 SE  RMY 47 TSTM
4/09  59/39/49/+5/0.10/0.0/291/37         40 S   AERO 40 S   RMY 43
4/10  55/35/45/0/T/0.0/560/71             35 NW  AERO 32 NW  RMY 34
4/11  62/35/49/+4/T/0.0/728/92            31 NNW AERO 30 NNW RMY 31
4/12  68/46/57/+11/0.06/0.0/349/44        32 W   AERO 30 W   RMY 31
4/13  71/47/59/+13/0.00/0.0/670/84        33 S   AERO 31 S   RMY 35
4/14  50/43/47/0/0.16/0.0/000/00          19 N   AERO 18 N   RMY 18
4/15  66/43/55/+8/T/0.0/691/86            37 S   AERO 37 S   RMY 39
4/16  70/40/55/+8/0.40/0.0/314/39         42 S   AERO 53 SSW RMY 45
4/17  48/36/42/-6/0.01/T/461/57           38 N   AERO 36 N   RMY 39
4/18  55/32/44/-4/0.00/0.0/616/76         35 E   AERO 30 E   RMY 34
4/19  55/39/47/-2/0.96/0.0/325/40         55 S   AERO 53 S   RMY 58
4/20  56/37/47/-2/0.00/0.0/808/99         40 WNW AERO 37 WNW RMY 41
4/21  60/40/50/0/T/0.0/541/66             45 SSW AERO 41 SSW RMY 47
4/22  65/46/56/+6/0.00/0.0/699/85         39 WNW AERO 35 WNW RMY 39
4/23  66/40/53/+3/0.00/0.0/577/70         24 NW  AERO 22 W   RMY 25
4/24  50/40/45/-6/T/0.0/165/20            29 ENE AERO 26 ENE RMY 30
4/25  59/41/50/-1/0.00/0.0/464/56         22 S   AERO 21 S   RMY 23
4/26  54/42/48/-4/0.24/0.0/000/00         20 SSW AERO 18 S   RMY 21
4/27  56/39/48/-4/0.06/0.0/350/42         48 NW  AERO 47 NW  RMY 48
4/28  53/35/44/-8/0.00/0.0/669/80         45 NNW AERO 45 NW  RMY 46
4/29  55/35/45/-8/0.00/0.0/664/79         40 NNW AERO 39 NNW RMY 39
4/30  58/34/46/-7/0.00/0.0/690/82         24 NNW AERO 23 NNW RMY 24

5/01  The low since midnight is 40F, the daily normal low is 44F

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

RECORDS FOR MAY 1
HIGH 87F IN 1899
LOW 29F IN 1978
PRECIP 2.53 INCHES IN 1921
SNOWFALL TRACE IN 1905,1917,1921,1995,2016
PEAK GUST 57 MPH NW IN 1974

RECORDS FOR MAY 2
HIGH 92F IN 2001
LOW 29F IN 1903
PRECIP 1.36 INCHES IN 2006
SNOWFALL TRACE IN 1920, 1941
PEAK GUST 58 MPH S IN 1983

TODAY’S REPORT PREPARED BY: Matt Douglas

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Blue Hill Observatory & Science Center · Legal

Data Use & Privacy Policy

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
Part I — Data Use Policy
§ 01

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