Wednesday, April 27, 2022

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

WEDNESDAY, APRIL 27, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0445E
SUNSET:  1839E

MOSTLY CLOUDY WITH INCREASING WIND AND SOME DISTANT SHOWERS
DEVELOPING AFTER NOONTIME….

Today was mostly cloudy with some breaks of sunshine mostly
in the morning hours. Wind has made a bit of a jump as the
day went on, increasing to 20 mph on average with frequent
gusts of almost 30 mph.

Visibility was decent today at 70 miles on average. Pressure
has been on a relatively steady drop as showers develop
off to the northwest.

The high so far today is 56F, which is 5 degrees below the
normal maximum of 61F. The low since midnight is 46F, which
is 4 degrees higher than the normal minimum of 42F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast altocumulus with a few cumulus fractus
Temperature: 47F; Dew Point: 44F; Relative Humidity: 87%
Wind: NNW @ 12G17 kts
Sea-level pressure: 1009.6 mb; 29.81 in. Hg: rising then falling
Visibility: 60 miles
6-hr Max temp: 51F
6-hr Min temp: 46F
24-hr Precip:  0.30 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 70 OVC 60 096/47/44/3412G17/981/ FEW CUFRA ALQDS/
8/77/ 53003 70030 10051 20046

10 A.M.
Weather: Scattered stratocumulus, broken altocumulus and
cirrostratus
Temperature: 50F; Dew Point: 39F; Relative Humidity: 64%
Wind: NW @ 13G20 kts
Sea-level pressure: 1008.0 mb; 29.76 in Hg: falling, then
more rapidly
Visibility: 70 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 40 SCT 70 BKN 250 BKN 75 080/50/39/3213G20/976/
8/876 58016

1 P.M.
Weather: Scattered stratocumulus, overcast altocumulus with
breaks, distant showers NW-N
Temperature: 54F, Dew point: 34F; Relative Humidity: 46%
Wind: NW @ 17G25 kts
Sea-level pressure: 1006.3 mb; 29.71 in Hg: falling unsteadily
Visibility: 70 miles
6-hr Max temp: 56F
6-hr Min temp: 47F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 50 SCT 70 OVC 70 064/54/34/3217G25/971/ FEW BINOVC ALQDS
VIRGA NW-N/ 8/870 57016 10056 20047

————————————————————–

SUMMARY FOR TUESDAY, APRIL 26, 2022

TEMPERATURE (DEGREES F)
MAX…….54     NORMAL…..61
MIN…….42     NORMAL…..42
MEAN……48     NORMAL…..52

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-4
TOTAL DEPARTURE FOR THE MONTH………………+61 [+2.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….17  DEPARTURE……..+4
TOTAL HEATING UNITS FOR THE MONTH…………424  DEPARTURE…….-65
TOTAL HEATING UNITS FOR THE SEASON……….5287  DEPARTURE……-548
TOTAL HEATING UNITS LAST SEASON TO DATE…..5289  DEPARTURE……..-2

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……..-2
TOTAL COOLING UNITS FOR THE SEASON………….0  DEPARTURE……..-2
TOTAL COOLING UNITS LAST SEASON TO DATE……..0  DEPARTURE………0

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….20 SSW @  1:52 P.M.
AEROVANE……………….18 S   @ 12:08 A.M.
VECTOR #2 (Instantaneous)..22     @  1:52 P.M.
DAVIS #2 ………………22 S   @ 12:01 A.M.
RMY #2 (Instantaneous)…..21 S   @ 12:08 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………………16 SSW @  1:58 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..16     @  1:53 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………16 S   @ 12:09 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..16 SSW @  1:53 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…….. 7.5 S [181 total miles] VECTOR #2……………… 8.2
DAVIS #2………………. 7.8 SSW
RMY #2………………… 8.4 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…….0.30  DEPARTURE…..+0.15
TOTAL PRECIPITATION FOR THE MONTH………….2.97  DEPARTURE…..-1.22
TOTAL PRECIPITATION FOR THE YEAR………….16.28  DEPARTURE…..-1.93

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……-2.7
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..70.7  DEPARTURE……+1.1

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/…./0.0/…/..         20 SSW AERO 18 S   RMY 21

4/27  The low since midnight is 46F, the daily normal low is 42F

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

RECORDS FOR APRIL 27
HIGH 93 IN 1990
LOW 28 IN 1919
PRECIP 1.89 IN 1979
SNOWFALL 2.7 IN. IN 1993
PEAK GUST 65e MPH N IN 1941

RECORDS FOR APRIL 28
HIGH 92 IN 1990, 2009
LOW 26 IN 1947
PRECIP 2.41 IN 1904
SNOWFALL 10.0 IN. IN 1987
PEAK GUST 69 MPH NE 1967

TODAY’S REPORT PREPARED BY: Benjamin Turner