Monday, April 25, 2022

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

MONDAY, APRIL 25, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0448E
SUNSET:  1837E

MAINLY CLOUDY AND MILD TODAY WITH LIGHT WIND….

More clouds than sun has been the theme again today with
temperatures milder than yesterday, actually close to seasonal
norms with a high of 59F so far.

The wind has been light easterly only averaging around 7mph
for the day. The peak gust has only been 18mph.

Visibility has been fair averaging 40-50 miles with some
haziness in the air, likely due in part to high pollen levels.

The high so far today is 59F, which is 2 degrees below the
normal maximum of 61F. The low since midnight is 41F, which
is 1 degree below the normal minimum of 42F.

————————————————————–

Today’s Observations:

7 A.M.
Weather: Overcast cirrus, few altocumulus all quadrants,
few altocumulus castellanus SSW-NW
Temperature: 45F; Dew Point: 33F; Relative Humidity: 62%
Wind: NNW @ 6 kts, wind light
Sea-level pressure: 1025.9 mb; 30.30 in. Hg: rising then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 45F
6-hr Min temp: 41F
24-hr Precip:  0.00 ins.
24-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1155 E250 OVC 40 259/45/33/3306/030/ FEW AC ALQDS FEW ACC SSW-NW
SUN DMLY VSBL HAZY WND LGT/ 8/082 51018 10045 20041

10 A.M.
Weather: Thin broken cirrus, few altocumulus all quadrants
Temperature: 55F; Dew Point: 38F; Relative Humidity: 52%
Wind: ENE @ 5 kts, wind light and variable
Sea-level pressure: 1026.2 mb; 30.30 in Hg: rising then falling
Visibility: 40 miles, hazy
3-hr Precip: 0.00 ins.
3-hr Snowfall: 0.0 ins.
BHO SA 1455 E250 -OVC 40 262/55/38/0605/030/ FEW AC ALQDS HAZY WND L/V/
8/051 50003

1 P.M.
Weather: Broken altocumulus, overcast cirrostratus,
few breaks in overcast distant E-SE
Temperature: 58F, Dew point: 31F; Relative Humidity: 35%
Wind: E @ 5 kts, wind light and variable
Sea-level pressure: 1025.4 mb; 30.28 in Hg: falling, then more rapidly
Visibility: 50 miles
6-hr Max temp: 59F
6-hr Min temp: 45F
6-hr Precip:  0.00 ins.
6-hr Snowfall: 0.0 ins.
Snow Depth: 0 ins.
BHO SA 1755 E150 BKN 200 OVC 50 254/58/31/0905/028/ FEW BINOVC DSNT E-SE
HAZY WND L/V/ 8/057 58008 10059 20045

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SUMMARY FOR SUNDAY, APRIL 24, 2022

TEMPERATURE (DEGREES F)
MAX…….50     NORMAL…..60
MIN…….40     NORMAL…..41
MEAN……45     NORMAL…..51

DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…….-6
TOTAL DEPARTURE FOR THE MONTH………………+66 [+2.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….20  DEPARTURE……..+6
TOTAL HEATING UNITS FOR THE MONTH…………392  DEPARTURE…….-69
TOTAL HEATING UNITS FOR THE SEASON……….5255  DEPARTURE……-553
TOTAL HEATING UNITS LAST SEASON TO DATE…..5256  DEPARTURE……..-1

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

PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….29 ENE @  3:04 A.M.
AEROVANE……………….26 ENE @  3:04 A.M.
VECTOR #2 (Instantaneous)..30     @  3:32 A.M.
DAVIS #2 ………………28 E   @  3:04 A.M.
RMY #2 (Instantaneous)…..30 ENE @  3:32 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………………18 ENE @  4:51 A.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19     @  3:09 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………19 ENE @  3:09 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 ENE @  3:09 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…….. 8.1 ENE [194 total miles] VECTOR #2……………… 8.7
DAVIS #2………………. 8.5 E
RMY #2………………… 8.5 E
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………….2.67  DEPARTURE…..-1.23
TOTAL PRECIPITATION FOR THE YEAR………….15.98  DEPARTURE…..-1.94

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/…/..         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/T/0.0/…/..             45 SSW AERO 41 SSW RMY 47
4/22  65/46/56/+6/0.00/0.0/…/..         39 WNW AERO 35 WNW RMY 39
4/23  66/40/53/+3/0.00.0.0/…/..         24 NW  AERO 22 W   RMY 25
4/24  50/40/45/-6/T/0.0/…/..            29 ENE AERO 26 ENE RMY 30

4/25  The low since midnight is 41F, 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 25
HIGH 83 IN 2009
LOW 24 IN 1892
PRECIP 1.38 IN. IN 1901
SNOWFALL 0.7 IN. IN 2002
PEAK GUST 66 MPH SE IN 1968

RECORDS FOR APRIL 26
HIGH 88 IN 2009
LOW 23 IN 1919
PRECIP 1.64 IN. IN 1931
SNOWFALL 1.0 IN. IN 2000
PEAK GUST 53 MPH SSW IN 1996

TODAY’S REPORT PREPARED BY: Matt Douglas