Friday, April 15, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, APRIL 15, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME
SUNRISE: 0503E
SUNSET: 1826E
A SPLENDID SPRING DAY ATOP GREAT BLUE HILL…
Once again, we were greeted this morning with some overnight
rainfall. Not much was dropped thanks to weakening thunderstorms
on approach. The gauge saw 0.16″ bringing the monthly and yearly
totals to 1.30″ and 14.61″ respectively. Still about 2″ below normal
on the year thus far.
Following the rain, a clearing line quickly advanced eastward during
the 7a observation, and has since been mostly sunny ever since! Temperatures
have responded nicely notching the mid-60s by early afternoon. Visibility
is excellent at 80 miles due to exceptionally dry air (RH @ 20%!). Winds
have picked up from the WNW since morning – now averaging 11 MPH. Not
a bad day for the Red Sox home opener!
The high so far today is 64F, which is 8 degrees above the
normal maximum of 56F. The low since midnight is 43F, which
is 5 degrees above the normal minimum of 38F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Scattered Altocumulus/Altostratus (clearing line NW-E-SW
advancing east)
Temperature: 44F; Dew Point: 39F; Relative Humidity: 82%
Wind: NNW @ 7G15 kts
Sea-level pressure: 1017.7 mb; 30.05 in. Hg: rising unsteadily
Visibility: 75 miles (hazy)
6-hr Max temp: 44F
6-hr Min temp: 43F
24-hr Precip: 0.16 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 120 SCT 75 177/44/39/3407G15/005/ LINE CLRG NE-E-SW ADVCNG
E HAZY/ 8/070 52015 70016 10044 20043
10 A.M.
Weather: Clear (few cirrus)
Temperature: 58F; Dew Point: 32F; Relative Humidity: 37%
Wind: WNW @ 12G23 kts
Sea-level pressure: 1018.2 mb; 30.07 in Hg: Rising then falling
Visibility: 75 miles (hazy)
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 CLR 75 182/58/32/2912G23/007/ HAZY/ 8/001 50005
1 P.M.
Weather: Clear (few cirrus)
Temperature: 63F, Dew point: 22F; Relative Humidity: 20%
Wind: WNW @ 17G29 kts
Peak Wind: 33 MPH (29 kts) WNW @ 12:47 PM
Sea-level pressure: 1016.7 mb; 30.02 in Hg: falling then falling more rapidly
Visibility: 80 miles
6-hr Max temp: 64F
6-hr Min temp: 44F
6-hr Precip: 0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 CLR 80 167/63/22/2917G29/002/ FEW CI ALQDS
PK WND 2929/47/ 8/001 58015 10064 20044
————————————————————–
SUMMARY FOR THURSDAY, APRIL 14, 2022
TEMPERATURE (DEGREES F)
MAX…….50 NORMAL…..56
MIN…….43 NORMAL…..37
MEAN……47 NORMAL…..47
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..0
TOTAL DEPARTURE FOR THE MONTH………………+61 [+4.2 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….18 DEPARTURE……..-1
TOTAL HEATING UNITS FOR THE MONTH…………236 DEPARTURE…….-63
TOTAL HEATING UNITS FOR THE SEASON……….5099 DEPARTURE……-547
TOTAL HEATING UNITS LAST SEASON TO DATE…..5076 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………0
TOTAL COOLING UNITS FOR THE SEASON………….0 DEPARTURE………0
TOTAL COOLING UNITS LAST SEASON TO DATE……..0 DEPARTURE………0
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….19 N @ 8:07 P.M.
AEROVANE……………….18 N @ 12:30 A.M.
VECTOR #2 (Instantaneous)..19 @ 1:25 A.M.
DAVIS #2 ………………17 N @ 12:29 A.M.
RMY #2 (Instantaneous)…..18 N @ 9:02 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………………14 N @ 12:16 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..14 @ 12:16 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………14 N @ 12:16 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..14 N @ 12:16 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……..6.7 N [160 total miles]
VECTOR #2………………7.3
DAVIS #2……………….6.8 NE
RMY #2…………………7.1 NNE
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…….0.16 DEPARTURE……0.00
TOTAL PRECIPITATION FOR THE MONTH………….1.30 DEPARTURE…..-1.12
TOTAL PRECIPITATION FOR THE YEAR………….14.61 DEPARTURE…..-1.83
SNOWFALL (INCHES) THROUGH THIS MORNING (EST):
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………….0.0 DEPARTURE……-0.1
TOTAL SNOWFALL FOR THE MONTH……………….0.0 DEPARTURE……-2.1
TOTAL SNOWFALL FOR THE SEASON (2021-2022)…..70.7 DEPARTURE……+1.7
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/…/.. 32 W AERO 30 W RMY 31
4/13 71/47/59/+13/0.00/0.0/…/.. 33 S AERO 31 S RMY 35
4/14 50/43/47/0/…/0.0/…/.. 19 N AERO 18 N RMY 18
4/15 The low since midnight is 43F, the daily normal low is 38F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR APRIL 15
HIGH 81 IN 1896
LOW 23 IN 1943
PRECIP 1.75 IN. IN 2007
SNOWFALL 1.0 IN. IN 1916, 1962
PEAK GUST 66 MPH E IN 2007
RECORDS FOR APRIL 16
HIGH 89 IN 2012
LOW 23 IN 1943
PRECIP 2.63 IN. IN 2018
SNOWFALL 3.6 IN. IN 2021
PEAK GUST 73 MPH E IN 2007
TODAY’S REPORT PREPARED BY: Andrew Swanson
