Thursday, April 21, 2022

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

THURSDAY, APRIL 21, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0454E
SUNSET:  1833E

WARM AND SPRINGLIKE WITH WIND INCREASING AS PRESSURE
DROPS….

Today we observed windy conditions, especially around
noontime. We are currently seeing wind around 25 mph
on average with a max gust so far of 35 mph from the
southwest. This is with a pressure drop of almost 5
millibars since 7 EST. Cloud cover consists of mostly
thin, upper level clouds and some mid-level altocumulus
by the 1 P.M. observation.

Conditions are dry with dew points in the mid-20’s as
temperatures climb out of the upper 50’s.

The high so far today is 60F, which is a degree above the
normal maximum of 59F. The low since midnight is 40F, which
is the same as the normal minimum.

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Today’s Observations:

7 A.M.
Weather: Thin overcast cirrostratus
Temperature: 45F; Dew Point: 34F; Relative Humidity: 65%
Wind: SE @ 12 kts
Sea-level pressure: 1034.2 mb; 30.54 in. Hg: rising, then
more slowly
Visibility: 65 miles
6-hr Max temp: 45F
6-hr Min temp: 40F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 250 -OVC 65 342/45/34/1312/054/ 8/007 51014 10045 20040

10 A.M.
Weather: Thin broken cirrostratus
Temperature: 57F; Dew Point: 31F; Relative Humidity: 37%
Wind: SW @ 14G23 kts
Sea-level pressure: 1033.3 mb; 30.51 in Hg: falling, then
more rapidly
Visibility: 75 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 250 -BKN 75 333/57/31/2214G23/051/ 8/006 58009

1 P.M.
Weather: Broken altocumulus, thin overcast cirrostratus
Temperature: 58F, Dew point: 26F; Relative Humidity: 29%
Wind: SSW @ 20G30 kts, peak of 35 mph SSW at 12:51 P.M.
Sea-level pressure: 1029.9 mb; 30.41 in Hg: falling steadily
Visibility: 75 miles
6-hr Max temp: 60F
6-hr Min temp: 45F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 180 BKN 250 -OVC 75 299/58/26/2020G30/041/ PK WND 2030/51/
8/057 57034 10060 20045

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SUMMARY FOR WEDNESDAY, APRIL 20, 2022

TEMPERATURE (DEGREES F)
MAX…….56     NORMAL…..59
MIN…….37     NORMAL…..40
MEAN……47     NORMAL…..49

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-2
TOTAL DEPARTURE FOR THE MONTH………………+63 [+3.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….18  DEPARTURE……..+2
TOTAL HEATING UNITS FOR THE MONTH…………336  DEPARTURE…….-65
TOTAL HEATING UNITS FOR THE SEASON……….5199  DEPARTURE……-549
TOTAL HEATING UNITS LAST SEASON TO DATE…..5184  DEPARTURE…….+15

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……..-1
TOTAL COOLING UNITS FOR THE SEASON………….0  DEPARTURE……..-1
TOTAL COOLING UNITS LAST SEASON TO DATE……..0  DEPARTURE………0

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….40 WNW @  8:32 A.M.
AEROVANE……………….37 WNW @  8:32 A.M.
VECTOR #2 (Instantaneous)..44     @  8:32 A.M.
DAVIS #2 ………………38 WNW @  8:58 A.M.
RMY #2 (Instantaneous)…..41 WNW @  8:19 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………………29 WNW @  8:21 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..30     @ 10:43 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………30 WNW @  8:59 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..29 WNW @ 10:43 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……..14.0 WNW [336 total miles] VECTOR #2………………14.5
DAVIS #2……………….14.6 WNW
RMY #2…………………14.3 WNW
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…..-0.15
TOTAL PRECIPITATION FOR THE MONTH………….2.67  DEPARTURE…..-0.65
TOTAL PRECIPITATION FOR THE YEAR………….15.98  DEPARTURE…..-1.36

SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0  DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH……………..TRACE  DEPARTURE……-2.6
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..70.7  DEPARTURE……+1.2

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/…/..         55 S   AERO 53 S   RMY 58
4/20  56/37/47/-2/0.00/0.0/…/..         40 WNW AERO 37 WNW RMY 41

4/21  The low since midnight is 40F, the daily normal low is 40F

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

RECORDS FOR APRIL 21
HIGH 85 IN 1923
LOW 22 IN 1908
PRECIP 3.18 IN. IN 1991
SNOWFALL 0.8 IN. IN 1947
PEAK GUST 76e MPH NE IN 1940

RECORDS FOR APRIL 22
HIGH 85 IN 1977, 2001
LOW 26 IN 1981
PRECIP 2.60 IN. IN 2019
SNOWFALL 3.0 IN. IN 1940
PEAK GUST 68e MPH NW IN 1945

TODAY’S REPORT PREPARED BY: Benjamin Turner