Tuesday, May 10, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
TUESDAY, MAY 10, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0428E
SUNSET: 1854E
STILL WINDY AND STILL COOL UNDER MAINLY SUNNY SKIES….
The weather has been like a broken record it seems for the
last few days. Today is once again featuring a good deal of
sunshine through high thin cirrus clouds at times. The busy
wind off the chilly ocean also continues.
The average speed for the day has been around 17mph with a peak
gust of 44 mph.
Despite the sun, the air remains chilly with readings generally
in the mid to upper 50s.
The air is also quite dry with the dew point sitting below the
freezing mark all day, as low as 24F at the 1 P.M. observation.
This dry air along with the gusty wind is continuing the enhanced
fire risk once again today.
Visibility has been gradually improving through the day, starting
at 40 miles this morning and reaching around 60 miles this
afternoon.
The high so far today is 57F, which is 8 degrees below the
normal maximum of 65F. The low since midnight is 43F, which
is 4 degrees below the normal minimum of 47F.
————————————————————–
Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus/castellanus distant NE-S,
few cirrus distant all quadrants
Temperature: 49F; Dew Point: 30F; Relative Humidity: 47%
Wind: NE @ 17G32 kts, peak wind NE 37 mph at 6:50 A.M.
Sea-level pressure: 1030.4 mb; 30.43 in. Hg: rising, then more slowly
Visibility: 40 miles, hazy
6-hr Max temp: 49F
6-hr Min temp: 43F
24-hr Precip: 0.00 ins.
BHO SA 1155 CLR 40 304/49/30/0517G32/043/ FEW AC/ACC DSNT NE-S
FEW CI DSNT ALQDS HAZY PK WND 0532/50/ 8/081 51021 10049 20043
10 A.M.
Weather: Clear, few cirrostratus NE-S
Temperature: 53F; Dew Point: 27F; Relative Humidity: 36%
Wind: ENE @ 20G33 kts, peak wind ENE 44 mph at 09:44 A.M.
Sea-level pressure: 1031.3 mb; 30.45 in Hg: rising, then more slowly
Visibility: 50 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 50 313/53/27/0620G33/045/ FEW CS NE-S PK WND 0638/44/
8/005 51009
1 P.M.
Weather: Thin scattered cirrus, few altocumulus distant ESE-SSW
Temperature: 54F, Dew point: 24F; Relative Humidity: 30%
Wind: ENE @ 15G28 kts, peak wind ENE 39 mph at 12:24 P.M.
Sea-level pressure: 1030.6 mb; 30.43 in Hg, falling, then more rapidly
Visibility: 60 miles
6-hr Max temp: 57F
6-hr Min temp: 49F
6-hr Precip: 0.00 ins.
BHO SA 1755 250 -SCT 60 306/54/24/0615G28/043/ FEW AC DSNT ESE-SSW
PK WND 0634/24/ 8/074 58007 10057 20049
————————————————————–
SUMMARY FOR MONDAY, MAY 9, 2022
TEMPERATURE (DEGREES F)
MAX…….54 NORMAL…..65
MIN…….39 NORMAL…..46
MEAN……47 NORMAL…..56
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL…… -9
TOTAL DEPARTURE FOR THE MONTH………………-34 [-4.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2021 THRU JUN 2022)
TOTAL HEATING UNITS FOR YESTERDAY………….18 DEPARTURE……..+8
TOTAL HEATING UNITS FOR THE MONTH…………128 DEPARTURE…….+30
TOTAL HEATING UNITS FOR THE SEASON……….5492 DEPARTURE……-493
TOTAL HEATING UNITS LAST SEASON TO DATE…..5455 DEPARTURE…….+37
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………..0 DEPARTURE……..-1
TOTAL COOLING UNITS FOR THE MONTH…………..0 DEPARTURE……..-4
TOTAL COOLING UNITS FOR THE SEASON………….0 DEPARTURE……..-7
TOTAL COOLING UNITS LAST SEASON TO DATE……..0 DEPARTURE………0
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….43 ENE @ 9:17 A.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..47 @ 10:18 A.M.
DAVIS #2 ………………42 E @ 9:17 A.M.
RMY #2 (Instantaneous)…..46 NE @ 10:01 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………………30 NE @ 12:00 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..28 @ 9:23 A.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………28 ENE @ 9:24 A.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..27 NE @ 9:23 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……..17.0 ENE [407 total miles]
VECTOR #2………………17.0
DAVIS #2……………….17.1 ENE
RMY #2…………………16.5 NE
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…..-0.11
TOTAL PRECIPITATION FOR THE MONTH………….0.58 DEPARTURE…..-0.53
TOTAL PRECIPITATION FOR THE YEAR………….16.86 DEPARTURE…..-3.03
PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/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
5/01 69/40/55/+2/0.00/786/93 25 SSE AERO 25 SSE RMY 27
5/02 58/42/50/-4/0.21/059/07 21 NE AERO 19 NE RMY 20
5/03 57/43/50/-4/0.23/229/27 23 ENE AERO 22 ENE RMY 24
5/04 52/45/49/-5/0.14/000/00 19 NW AERO 18 SE RMY 19
5/05 70/46/58/+3/0.00/666/78 23 NNW AERO 21 NNW RMY 23
5/06 63/49/56/+1/0.00/051/06 20 S AERO 18 S RMY 21
5/07 49/42/46/-9/0.00/112/13 48 ENE AERO 51 ENE RMY 50
5/08 51/40/46/-9/0.00/621/72 43 ENE AERO N/A RMY 47
5/09 54/39/47/-9/0.00/838/97 43 ENE AERO N/A RMY 46
5/10 The low since midnight is 43F, the daily normal low is 47F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR MAY 10
HIGH 93F IN 1896
LOW 29F IN 1900
PRECIP 1.85 INS IN 1998
SNOW 2.8 INS 1977 (7.8 INS TOTAL 5/9-5/10 1977)
PEAK GUST 64 MPH S IN 1990
RECORDS FOR MAY 11
HIGH 90F IN 1993
LOW 28F IN 1900
PRECIP 1.28 INS IN 1957
SNOW 1.0 INS IN 1907 (LATEST MEASURABLE SNOW ON RECORD)
PEAK GUST 75e MPH NW IN 1945
TODAY’S REPORT PREPARED BY: Matt Douglas
