Saturday, April 23, 2022

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

SATURDAY, APRIL 23, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0451E
SUNSET:  1835E

MILD WITH EXCELLENT VISIBILITY AND A COOL WESTERLY WIND….

Today was a lot more subdued in the wind department with
an average speed of less than 10 mph. There was a wind
shift from N-W over the course of the day. This provides
the summit with a cool breeze with a max gust of barely
15 mph.

Visibility is excellent with an average of over 80 miles.
The max was 85 miles seen at the 1 P.M. observation.

The high so far today is 62F, which is 2 degrees above the
normal maximum of 60F. The low since midnight is 40F, which
is a degree below the normal minimum of 41F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Thin broken cirrocumulus
Temperature: 45F; Dew Point: 26F; Relative Humidity: 47%
Wind: NNE @ 9G14 kts
Sea-level pressure: 1029.2 mb; 30.39 in. Hg: rising then
more slowly
Visibility: 80 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 -BKN 80 292/45/26/0209G14/039/ 8/009
51006 10045 20040

10 A.M.
Weather: Thin overcast cirrocumulus
Temperature: 53F; Dew Point: 24F; Relative Humidity: 31%
Wind: N @ 8 kts
Sea-level pressure: 1028.5 mb; 30.37 in Hg: rising then
falling
Visibility: 80 miles
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 250 -OVC 80 285/53/24/3608/037/ 8/009 55007

1 P.M.
Weather: Scattered altocumulus, broken cirrostratus
Temperature: 60F, Dew point: 45F; Relative Humidity: 22%
Wind: W @ 7 kts
Sea-level pressure: 1025.5 mb; 30.27 in Hg: Falling, then more
slowly
Visibility: 85 miles
6-hr Max temp: 62F
6-hr Min temp: 45F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 200 SCT 250 BKN 85 255/60/22/2707/027/ 8/056 56030
10062 20045

————————————————————–

SUMMARY FOR FRIDAY, APRIL 22, 2022

TEMPERATURE (DEGREES F)
MAX…….65     NORMAL…..59
MIN…….46     NORMAL…..41
MEAN……56     NORMAL…..50

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….+6
TOTAL DEPARTURE FOR THE MONTH………………+69 [+2.9 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY…………..9  DEPARTURE……..-6
TOTAL HEATING UNITS FOR THE MONTH…………360  DEPARTURE…….-72
TOTAL HEATING UNITS FOR THE SEASON……….5223  DEPARTURE……-556
TOTAL HEATING UNITS LAST SEASON TO DATE…..5228  DEPARTURE……..-5

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)…….39 WNW @  8:23 A.M.
AEROVANE……………….35 WNW @ 10:27 A.M.
VECTOR #2 (Instantaneous)..42     @  8:23 A.M.
DAVIS #2 ………………36 WNW @  8:26 A.M.
RMY #2 (Instantaneous)…..39 WNW @  8:23 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………………28 WNW @  9:18 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28     @  9:17 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 WNW @  9:17 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 WNW @  9:17 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……..13.5 NW [325 total miles] VECTOR #2………………14.0
DAVIS #2……………….14.0 NW
RMY #2…………………12.6 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…..-0.15
TOTAL PRECIPITATION FOR THE MONTH………….2.67  DEPARTURE…..-0.94
TOTAL PRECIPITATION FOR THE YEAR………….15.98  DEPARTURE…..-1.65

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……-2.7
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/…/..         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  60/40/50/0/0.00/0.0/…/..          45 SSW AERO 41 SSW RMY 47
4/22  65/46/56/+6/T/0.0/…/..            39 WNW AERO 35 WNW RMY 39

4/23  The low since midnight is 40F, the daily normal low is 41F

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

RECORDS FOR APRIL 23
HIGH 85 IN 1908, 2007
LOW 25 IN 1933,1989
PRECIP 1.99 IN. IN 2012
SNOWFALL 0.5 IN. IN 1911, 1956
PEAK GUST 64 MPH WNW IN 1962

RECORDS FOR APRIL 24
HIGH 82 IN 2001
LOW 22 IN 1930
PRECIP 2.51 INS IN 1898
SNOWFALL 1.2 INS IN 1967
PEAK GUST 59 MPH NW IN 1962

TODAY’S REPORT PREPARED BY: Benjamin Turner