Friday, July 7, 2023
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
FRIDAY, JULY 7, 2023
ALL TIMES ARE IN EASTERN STANDARD TIME (EST)
SUNRISE: 0415E
SUNSET: 1923E
CONTINUED VERY WARM AND HUMID UNDER PLENTY OF SUNSHINE….
Sunshine has been the theme today after some early morning fog
burned off, save for only a few clouds off in the distance.
Temperatures have warmed well into the 80s once again after an
overnight low in the upper 60s. The dew point remains on the high
side with values in the mid to upper 60s, so it still feels a bit
sticky out there.
The wind has been mainly light so far today with an average speed
of only about 9mph. The highest gust so far has only been around
20mph, occurring in the wee hours of the morning.
Visibility has been better today than in recent days, reaching
up to 35 miles early this afternoon.
The maximum temperature so far today is 86F, this is 5 degrees
above the normal high of 81F. The minimum since midnight is 68F,
which is 5 degrees above the normal low of 63F.
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Today’s Observations:
7 A.M.
Weather: Clear, few stratus fractus distant ESE-S-W. few cirrus
distant all quadrants
Temperature: 72F; Dew Point: 68F; Relative Humidity: 88%
Wind: S @ 6 kts, wind light
Sea-level pressure: 1013.6 mb; 29.93 in. Hg: steady, then rising
Visibility: 30 miles, thin fog
6-hr Max temp: 72F
6-hr Min temp: 68F
24-hr Precip: 0.00 inches
BHO SA 1155 CLR 30 136/72/68/1906/993/ FEW STFRA DSNT ESE-S-W
FEW CI DSNT ALQDS THN F ALQDS WND LGT/ 8/701 53004 10072 20068
10 A.M.
Weather: Clear, few cirrus all quadrants
Temperature: 80F; Dew Point: 69F; Relative Humidity: 69%
Wind: SSW @ 6 kts, wind light
Sea-level pressure: 1013.5 mb; 29.93 in. Hg: rising, then falling
Visibility: 30 miles, hazy
3-hr Precip: 0.00 inches
BHO SA 1455 CLR 30 135/80/69/2006/993/ FEW CI ALQDS HAZY WND LGT/
8/001 58001
1 P.M.
Weather: Clear, few cumulonimbus distant WNW-NW, few cumulus all
quadrants, few altocumulus/castellanus distant NE-SE, few cirrus
all quadrants
Temperature: 85F; Dew Point: 66F; Relative Humidity: 53%
Wind: SSW @ 9 kts
Sea-level pressure: 1011.9mb; 29.88 in. Hg: falling, then more rapidly
Visibility: 35 miles, hazy
6-hr Max temp: 86F
6-hr Min temp: 72F
6-hr Precip: 0.00 inches
BHO SA 1755 CLR 35 119/85/66/2009/988/ FEW CB DSNT WNW-NW
FEW CU ALQDS FEW AC/ACC DSNT NE-SE FEW CI ALQDS HAZY/ 8/381
58016 10086 20072
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SUMMARY FOR THURSDAY, JULY 6, 2023
TEMPERATURE (DEGREES F)
MAX…….92 NORMAL…..81
MIN…….69 NORMAL…..63
MEAN……81 NORMAL…..72
DEPARTURE FROM 30-YEAR (1991-2020) NORMAL………+9
TOTAL DEPARTURE FOR THE MONTH…………………+7 [+1.0 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON: JUL 2023 THRU JUN 2024)
TOTAL HEATING UNITS FOR YESTERDAY…………….0 DEPARTURE………0
TOTAL HEATING UNITS FOR THE MONTH…………….0 DEPARTURE……..-2
TOTAL HEATING UNITS FOR THE SEASON……………0 DEPARTURE……..-2
TOTAL HEATING UNITS LAST SEASON TO DATE……….0 DEPARTURE………0
COOLING DEGREE DAYS (SEASON: JAN 2023 THRU DEC 2023)
TOTAL COOLING UNITS FOR YESTERDAY……………16 DEPARTURE……..+9
TOTAL COOLING UNITS FOR THE MONTH……………47 DEPARTURE……..+5
TOTAL COOLING UNITS FOR THE SEASON………….175 DEPARTURE…….-16
TOTAL COOLING UNITS LAST SEASON TO DATE……..206 DEPARTURE…….-31
PEAK WIND GUST (MPH):
Note: Instruments designated #1 = Main Tower, #2 = South Tower,
F420C, Contacting, Merlin, and Richards are all Main Tower.
E=Estimated
F420C (Official)……….E23 SSW @ 05:14 P.M.
VECTOR #1 (1-Sec)……….22 SSW @ 05:14 P.M.
VECTOR #2 (1-Sec)……….26 SSW @ 05:12 P.M.
DAVIS #1……………….22 S @ 05:02 P.M.
DAVIS #2 ………………26 S @ 04:57 P.M.
RMY #1 (Instantaneous)…..23 S @ 05:02 P.M.
RMY #2 (Instantaneous)…..27 SSW @ 05:12 P.M.
MERLIN…………………20 S
RICHARDS (C5C) (Inst)……21 @ 05:14 P.M.
FASTEST MILE:
CONTACTING ANEMOMETER/OFFICIAL………………15 SSW @ 11:05 P.M.
MAXIMUM 2-MINUTE VECTOR #1 AVERAGE…………..15 @ 05:13 P.M.
MAXIMUM 2-MINUTE VECTOR #2 AVERAGE…………..17 @ 05:14 P.M.
MAXIMUM 2-MINUTE DAVIS #1 AVERAGE……………15 S @ 04:32 P.M.
MAXIMUM 2-MINUTE DAVIS #2 AVERAGE……………18 S @ 04:57 P.M.
MAXIMUM 2-MINUTE RMY #1 AVERAGE……………..15 SSW @ 05:13 P.M.
MAXIMUM 2-MINUTE RMY #2 AVERAGE……………..17 SSW @ 05:14 P.M.
MAXIMUM 2-MINUTE RICHARDS (C5C) AVERAGE………15 @ 05:13 P.M.
AVERAGE WIND SPEED AND DIRECTION:
CONTACTING/OFFICIAL……….. 8.2 SSW [196 total miles]
VECTOR #1………………… 8.7
VECTOR #2………………… 9.1
DAVIS #1…………………. 8.0 SSW
DAVIS #2…………………. 8.9 SSW
RMY #1…………………… 8.5 SSW
RMY #2…………………… 9.2 SSW
RICHARDS (C5C)……………. 8.5
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST):
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M……..0.00 DEPARTURE…..-0.11
TOTAL PRECIPITATION FOR THE MONTH…………..1.55 DEPARTURE…..+0.88
TOTAL PRECIPITATION FOR THE YEAR…………..26.73 DEPARTURE…..-1.17
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PRELIMINARY CLIMATE SUMMARY FOR JULY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN)/SUN(%)/PEAK GUST/VEC1/RMY GUST
PEAK GUST: F420C (Official)
VEC1: Vector #1 1-second gust
RMY: R.M. Young #1 wind gust recording system (Instantaneous)
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M: Missing data
7/1 80/61/71/0/0.00/567/62 17 SSE VEC1 16 SSE RMY 17
7/2 74/63/69/-2/0.34/027/03 35 S VEC1 35 S RMY 35
7/3 79/63/72/-1/0.40/265/29 18 NNW VEC1 18 NNW RMY 17 TSTM
7/4 71/65/68/-4/0.81/000/00 17 NE VEC1 18 NE RMY 17 TSTM
7/5 88/66/77/+5/0.00/…/.. 17 S VEC1 16 SE RMY 15
7/6 92/69/81/+9/0.00/…/.. 23 SSW VEC1 22 SSW RMY 23
7/7 The low since midnight is 68, the daily normal low is 63F
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated)
RECORDS FOR JULY 7
HIGH 97F IN 1908,1993
LOW 48F IN 1902
PRECIP 2.11 INS IN 1966
PEAK GUST 63 MPH NW IN 2021
RECORDS FOR JULY 8
HIGH 95F IN 1981
LOW 50F IN 1919
PRECIP 1.74 INS IN 1916
PEAK GUST 46e SSW IN 1941
TODAY’S REPORT PREPARED BY: Matt Douglas
