Sunday, July 17, 2022
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
SUNDAY, JULY 17, 2022
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0423E
SUNSET: 1918E
WARM WITH SOME AFTERNOON THUNDERSTORMS TO THE EAST AND
SOUTH…
We observed limited visibility with 3 miles in fog being
seen at the 7 A.M. observation. Weather conditions remained
hot and hazy, with dew points only making it to the low
60’s as the day went on.
One exciting feature of the day were some pop-up thunderstorms
to the south and east of the observatory, which has been the
usual this summer. The summit is missing more than 8 inches
of rainfall on the year and 1.25 inches lower than normal
on the month. We are heading toward severe drought status!
The high so far today is 89F, which is 7 degrees above the
normal maximum of 82F. The low since midnight is 65F, which
is 1 degree above the normal minimum of 64F.
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Today’s Observations:
7 A.M.
Weather: Overcast stratus
Temperature: 67F; Dew Point: 67F; Relative Humidity: 100%
Wind: SW @ 8 kts
Sea-level pressure: 1017.4 mb; 30.04 in. Hg: rising, then
more rapidly
Visibility: 3 miles, fog
6-hr Max temp: 67F
6-hr Min temp: 65F
24-hr Precip: 0.00 ins.
BHO SA 1155 15 OVC 3F 174/67/67/2408/004/ 8/6// 53008 10067 20065
10 A.M.
Weather: Clear, few small cumulus and few cirrus
Temperature: 82F; Dew Point: 66F; Relative Humidity: 59%
Wind: NNE @ 3 kts, wind light and variable
Sea-level pressure: 1017.2 mb; 30.04 in Hg: falling unsteadily
Visibility: 30 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 CLR 30 172/82/66/0203/004/ FEW SML CU ALQDS FEW CI
ALQDS HAZY WND L/V/ 8/102 57002
1 P.M.
Weather: Scattered towering cumulus with a cumulonimbus cloud
being seen to the south
Temperature: 87F, Dew point: 63F; Relative Humidity: 45%
Wind: S @ 10G15 kts
Sea-level pressure: 1016.2 mb; 30.01 in Hg: falling, then more rapidly
Visibility: 30 miles, hazy
6-hr Max temp: 89F
6-hr Min temp: 67F
6-hr Precip: 0.00 ins.
BHO SA 1755 35 SCT 30 162/87/63/1810G15/001/ CB S STNRY HAZY/ 8/300 58010
10089 20067
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SUMMARY FOR SATURDAY, JULY 16, 2022
TEMPERATURE (DEGREES F)
MAX…….84 NORMAL…..82
MIN…….63 NORMAL…..64
MEAN……74 NORMAL…..73
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL……..+1
TOTAL DEPARTURE FOR THE MONTH……………….+15 [+0.7 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2022 THRU JUN 2023)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-4
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-4
TOTAL HEATING UNITS LAST SEASON TO DATE………26 DEPARTURE…….-26
COOLING DEGREE DAYS (SEASON: JAN 2022 THRU DEC 2022)
TOTAL COOLING UNITS FOR YESTERDAY…………….9 DEPARTURE……..+1
TOTAL COOLING UNITS FOR THE MONTH…………..133 DEPARTURE…….+11
TOTAL COOLING UNITS FOR THE SEASON………….288 DEPARTURE…….+27
TOTAL COOLING UNITS LAST SEASON TO DATE……..303 DEPARTURE…….-15
PEAK WIND GUST (MPH):
Official (1-Sec AVG)…….25 SSW @ 4:18 P.M.
AEROVANE……………….N/A
VECTOR #2 (Instantaneous)..26 @ 4:18 P.M.
DAVIS #2 ………………30 S @ 4:52 P.M.
RMY #2 (Instantaneous)…..26 SSW @ 4:18 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………………19 SSW @ 4:53 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..19 @ 4:53 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………21 S @ 4:53 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..19 SSW @ 4:53 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…….. 9.3 SSW [224 total miles]
VECTOR #2………………10.0
DAVIS #2………………..9.9 SW
RMY #2…………………10.2 SW
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…………..0.51 DEPARTURE…..-1.28
TOTAL PRECIPITATION FOR THE YEAR…………..20.90 DEPARTURE…..-8.12
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
7/1 90/63/77/+6/0.00/704/77 33 S AERO N/A RMY 34
7/2 83/67/75/+4/0.25/228/25 25 WSW AERO N/A RMY 26 TSTM
7/3 84/65/75/+3/0.00/547/60 25 WNW AERO N/A RMY 26
7/4 83/60/72/0/0.00/838/92 25 WNW AERO N/A RMY 26
7/5 73/63/68/-4/0.12/027/03 37 SSW AERO N/A RMY 39
7/6 83/64/74/+2/T/701/77 37 SSW AERO N/A RMY 38
7/7 79/62/71/-1/0.00/645/71 27 SSW AERO N/A RMY 29
7/8 85/60/73/+1/0.00/472/52 24 WSW AERO N/A RMY 24
7/9 79/63/71/-2/0.00/843/93 21 N AERO N/A RMY 22
7/10 81/57/69/-4/0.00/851/94 22 SSE AERO N/A RMY 24
7/11 86/60/73/0/0.00/849/94 31 SSW AERO N/A RMY 33
7/12 86/63/75/+2/T/713/79 38 SSW AERO N/A RMY 39
7/13 89/67/78/+5/0.00/820/91 22 WNW AERO N/A RMY 22
7/14 86/64/75/+2/0.14/675/75 26 WNW AERO N/A RMY 27
7/15 85/61/73/0/0.00/862/96 21 S AERO N/A RMY 22
7/16 84/63/74/+1/0.00/…/.. 25 SSW AERO N/A RMY 26
7/17 The low since midnight is 65F, the daily normal low is 64F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JULY 17
HIGH 96F IN 1999
LOW 47F IN 1892
PRECIP 1.39 INS IN 1989
WIND 46 MPH WNW IN 1971
RECORDS FOR JULY 18
HIGH 96F IN 1991, 1999
LOW 54F IN 1892, 1956, 1971
PRECIP 1.65 INS IN 2000
WIND 43e MPH SW IN 1949
TODAY’S REPORT PREPARED BY: Benjamin Turner
