Monday, August 3, 2020

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

MONDAY, AUGUST 3, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

HOT AND BREEZY WITH A BIT LOWER HUMIDITY…

We’ve observed an abundance of sunshine today with
a busy southwest wind that has gradually veered
around to the west. Gusts of 30-35 mph have been
common today with an official peak of 36 mph so far.

This gusty west wind is a result of air mixing
down from aloft, which has helped to dry the air
out a bit today. The dew point started the day in
the low 70s, but has since dropped to around 60
by early this afternoon.

A drying west wind also helps to boost the
temperature. The high so far today is 90 degrees.
This is 9 degrees above the daily normal high
of 81F. The low since midnight is 75F, which is
12 degrees above the daily normal low of 63F.

It should be noted that if the low temperature
fails to drop below 75F before midnight tonight,
this will establish a new record high minimum for
the date. The previous record is 74F degrees set
back in 2018!

Today’s Observations:

7 A.M.
Weather: Scattered Altocumulus/Altostratus, scattered Cirrostratus,
thin scattered Cirrus
Temperature: 80F; Dew Point: 69F; Relative Humidity: 70%
Wind: SW at 15G22 kts
Sea-level pressure: 29.94 ins. Hg: Rising, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 80F
6-hr Min temp: 75F
24-hr Precip: 0.02 ins.
BHO SA 1155 140 SCT 180 SCT 250 –SCT 30 140/80/69/2215G22/994/
HAZY/ 8/076 51007 70002 10080 20075

10 A.M.
Weather: Scattered Altostratus/Cirrostratus, thin scattered Cirrus,
few Cumulus all quadrants
Temperature: 88F; Dew Point: 63F; Relative Humidity: 44%
Wind: SW at 18G29 kts, peak wind SW 29 kts at 9:53 A.M.
Sea-level pressure: 29.97 ins. Hg: rising, then more slowly
Visibility: 50 miles, hazy
3-hr Precip: 0.00 ins.
BHO SA 1455 180 SCT 250 –SCT 50 149/88/63/2318G29/997/
FEW CU ALQDS HAZY PK WND 2329/53/ 8/276 53009

1 P.M.
Weather: Clear, few Cumulus/Cumulus Fractus all quadrants,
few Cirrostratus distant W-NW-NNE
Temperature: 90F; Dew Point: 60F; Relative Humidity: 37%
Wind: WSW at 18G29 kts, peak wind W 30 kts at 12:38 P.M.
Sea-level pressure: 29.98 ins. Hg: falling, then rising
Visibility: 60 miles
6-hr Max temp: 90F
6-hr Min temp: 80F
6-hr Precip: 0.00 ins.
BHO SA 1755 CLR 60 152/90/60/2518G29/998/ FEW CU/CUFRA ALQDS
FEW CS DSNT W-NW-NNE PK WND 2730/38/ 8/206 53003 10090 20080

SUMMARY FOR SUNDAY, AUGUST 2, 2020

TEMPERATURE (DEGREES F)
MAX…..85   NORMAL…..81
MIN…..69   NORMAL…..63
MEAN….77   NORMAL…..72

DEPARTURE FROM 30-YEAR NORMAL………………+5
TOTAL DEPARTURE FOR THE MONTH……………..+10 [+4.8 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY……………..12  DEPARTURE…….+5
TOTAL COOLING UNITS FOR THE MONTH……………..24  DEPARTURE……+10
TOTAL COOLING UNITS FOR THE SEASON……………511  DEPARTURE…..+146
TOTAL COOLING UNITS LAST SEASON TO DATE……….428  DEPARTURE……+83

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………..36 S   AT  3:34 P.M.
AERO…………………….37 S   AT  3:34 P.M.
ASOS…………………….35 S   AT  3:13 P.M.
DAVIS……………………35 SSE AT  3:12 P.M
RMY 38  MERLIN 36
FASTEST MILE FOR YESTERDAY………………….26 S   AT  3:34 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………….25 S   AT  3:33 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE………………25 S   AT  3:44 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..13.3 S
ASOS…………………..12.5
DAVIS………………….12.4 S [185 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.02  DEPARTURE……-0.13
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE MONTH……….0.02  DEPARTURE……-0.28
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE YEAR……….29.09  DEPARTURE……-2.20
ASOS………….29.83

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

07/01  76/63/70/0/0.00/228/25              16 E    AERO 14 E    RMY 14  TSTM
07/02  86/61/74/4/0.00/803/88              30 WSW  AERO 25 WSW  RMY 33
07/03  73/60/67/-4/0.00/091/10             30 NE   AERO 28 NE   RMY 30
07/04  79/60/70/-1/0.00/565/62             16 S    AERO 16 S    RMY 16
07/05  83/63/73/+2/0.54/373/41             24 NW   AERO 30 NW   RMY 26  TSTM
07/06  73/60/67/-4/0.00/482/53             20 ENE  AERO 16 NNE  RMY 18
07/07  78/60/69/-2/0.00/454/50             25 S    AERO 25 S    RMY 26
07/08  83/64/74/+2/0.00/227/25             32 SSW  AERO 32 SSW  RMY 32
07/09  89/70/80/+8/0.00/834/92             24 S    AERO 23 S    RMY 22
07/10  83/70/77/+5/0.05/109/12             30 SSE  AERO 32 SSE  RMY N/A
07/11  85/70/78/+6/0.00/614/68             39 S    AERO 39 S    RMY 38
07/12  86/70/78/+6/0.00/830/92             28 WSW  AERO 28 WSW  RMY 29
07/13  82/69/76/+4/0.23/306/34             30 SSE  AERO 31 SSE  RMY 30  TSTM
07/14  78/63/71/-1/0.00/369/41             26 ENE  AERO 25 ENE  RMY 26
07/15  72/59/66/-6/0.00/539/60             21 NE   AERO 21 NE   RMY N/A
07/16  73/57/65/-7/0.00/815/91             21 E    AERO 21 E    RMY 19
07/17  71/57/64/-8/0.19/027/03             24 SSW  AERO 24 SSW  RMY 25
07/18  89/66/78/+6/0.00/822/92             18 W    AERO 17 W    RMY 19
07/19  92/69/81/+9/0.00/722/81             28 S    AERO 28 S    RMY 26
07/20  91/72/82/+10/T/481/54               25 SSW  AERO 25 SSW  RMY N/A
07/21  88/68/78/+6/0.00/799/90             25 W    AERO 25 W    RMY 24
07/22  80/67/74/+2/…./275/31             16 ENE  AERO M  M    RMY 16
07/23  88/68/78/+6/0.48/203/23             31 N    AERO 32 N    RMY 31  TSTM
07/24  81/68/75/+3/0.00/476/54             15 ENE  AERO 15 ENE  RMY 16
07/25  88/67/78/+6/0.00/845/96             18 W    AERO 18 WNW  RMY N/A
07/26  89/70/80/+8/0.00/632/72             27 W    AERO 28 W    RMY 27
07/27  94/72/83/+11/0.00/823/94            23 SW   AERO 25 SW   RMY N/A
07/28  95/74/85/+13/0.01/…/..            28 WSW  AERO 25 WSW  RMY 25
07/29  90/68/79/+7/0.00/…/..             23 SSW  AERO 25 SSW  RMY 24
07/30  88/71/80/+8/0.00/…/..             29 W    AERO 28 W    RMY 29
07/31  84/69/77/+5/0.00/…/..             14 ENE  AERO 14 ENE  RMY 15

PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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

08/01  87/66/77/+5/0.00/…/..             18 S    AERO 21 S    RMY 19
08/02  85/69/77/+5/0.02/…/..             36 S    AERO 37 S    RMY 38

08/03  The low since midnight is 75F, 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 AUGUST 3
HIGH 96F IN 1930
LOW 50F IN 1976
PRECIP 1.45 INCHES IN 1979
PEAK GUST 52 MPH NW IN 2008 [TSTM]

RECORDS FOR AUGUST 4
HIGH 95F IN 1928
LOW 48F IN 1900
PRECIP 1.68 INS IN 1983
PEAK GUST 48 MPH SW IN 1974

TODAY’S REPORT PREPARED BY: Matt Douglas