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

WEDNESDAY, AUGUST 26, 2020
ALL TIMES ARE IN EASTERN STANDARD TIME

NICE AND COOL WITH EXCELLENT VISIBILITY 
FOLLOWING THE WARM STINT....

We observed an excellent visibility of 85 miles this
morning, decreasing to 80 miles as the day went on. 
Overnight rainfall totaled a 10th of an inch, due to
a passing shower late yesterday afternoon. Skies were
mostly cloudy early, yet almost clear at the 1 P.M.
observation. Wind has been westerly, with a max gust
of 29 mph. The average wind speed is around 15 mph from
the northwest. 

Conditions were cooler and more fall like today, with 
dew points in the low 40's and a max temperature of 
71F so far today. This is 7 degrees below the daily 
normal maximum of 78F, and is actually normal for 
the middle of September!!! 


Today's Observations:

7 A.M.
Weather: Broken cirrostratus, few cumulus NE-SE
Temperature: 60F; Dew Point: 47F; Relative Humidity: 63%
Wind: NW at 12G16 kts
Sea-level pressure: 29.89 ins. Hg: rising steadily
Visibility: 85 miles
6-hr Max temp: 63F
6-hr Min temp: 56F
24-hr Precip: 0.01 ins.
BHO SA 1155 250 BKN 85 122/60/47/3212G16/989/ FEW CU NE-SE/ 
8/106 70001 51018 10063 20056

10 A.M.
Weather: Broken cirrostratus
Temperature: 65F; Dew Point: 46F; Relative Humidity: 49%
Wind: W at 9 kts
Sea-level pressure: 29.89 ins. Hg: rising then falling
Visibility: 80 miles
3-hr Precip: 0.00 ins.
BHO SA 1455 250 BKN 80 122/65/46/2809/989/ 8/007 55000

1 P.M.
Weather: Scattered cirrostratus, few cumulus
Temperature: 70F; Dew Point: 41F; Relative Humidity: 34%
Wind: WNW at 9G15 kts
Sea-level pressure: 29.85 ins. Hg: falling steadily
Visibility: 80 miles 
6-hr Max temp: 71F
6-hr Min temp: 59F
6-hr Precip: 0.00 ins. 
BHO SA 1755 250 SCT 80 109/70/41/2909G15/985/ FEW CU ALQDS/ 
8/107 58013 10071 20059


SUMMARY FOR TUESDAY, AUGUST 25, 2020 

TEMPERATURE (DEGREES F)
MAX.....86   NORMAL.....78
MIN.....65   NORMAL.....61
MEAN....76   NORMAL.....69

DEPARTURE FROM 30-YEAR NORMAL................. +7
TOTAL DEPARTURE FOR THE MONTH................+108 [+4.1 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY.................11  DEPARTURE.......+6                      
TOTAL COOLING UNITS FOR THE MONTH................259  DEPARTURE.....+100
TOTAL COOLING UNITS FOR THE SEASON...............746  DEPARTURE.....+236
TOTAL COOLING UNITS LAST SEASON TO DATE..........597  DEPARTURE.....+149

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY....................35 W   AT 10:02 P.M.  
                   AERO.........................37 W   AT  9:44 P.M. 
                   ASOS.........................35 W   AT 10:02 P.M.
                   DAVIS........................35 W   AT  4:29 P.M.
                   RMY 35  MERLIN 35
FASTEST MILE FOR YESTERDAY......................25 W   AT  2:15 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...................24 W   AT  2:15 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..................26 W   AT  2:15 P.M.
AVERAGE WIND SPEED AND DIRECTION.............. 12.5 W           
                   ASOS....................... 12.4
                   DAVIS...................... 10.5 NW

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01  DEPARTURE......-0.10
                         ASOS..............0.01
TOTAL PRECIPITATION FOR THE MONTH..........3.35  DEPARTURE......-0.01
                         ASOS..............3.37
TOTAL PRECIPITATION FOR THE YEAR..........32.42  DEPARTURE......-1.93
                         ASOS.............33.18


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  91/75/83/+11/0.00/715/83            36 WSW  AERO 38 SW   RMY 36
08/04  83/71/77/5/0.21/094/11              67 SSE  AERO 71 S    RMY 70
08/05  90/68/79/+7/0.00/668/78             28 SW   AERO 30 SW   RMY 29
08/06  84/65/75/3/0.00/701/82              20 W    AERO 17 W    RMY 19
08/07  79/65/72/0/T/136/16                 16 NE   AERO 16 NE   RMY N/A
08/08  83/64/74/+2/0.00/612/72             20 S    AERO 20 S    RMY 19
08/09  90/65/78/+6/0.00/661/78             26 SSW  AERO 26 SSW  RMY 26
08/10  94/69/82/+11/0.00/727/86            22 W    AERO 20 W    RMY 20
08/11  92/72/82/+11/0.00/.../..            31 SSW  AERO 35 SSW  RMY 31  TSTM
08/12  93/74/84/+13/0.00/.../..            22 SSW  AERO 22 SW   RMY 19
08/13  88/71/80/+9/0.00/.../..             18 ENE  AERO 18 NE   RMY 18
08/14  82/67/75/+4/0.00/.../..             23 ENE  AERO 23 ENE RMY N/A
08/15  67/62/65/-6/T/.../..                33 NNE  AERO 32 NNE  RMY N/A
08/16  69/62/66/-5/..../.../..             26 ENE  AERO 28 ENE  RMY 26
08/17  73/59/66/-5/..../.../..             25 NE   AERO 24 NE   RMY N/A
08/18  84/63/74/+3/..../.../..             23 W    AERO 23 W    RMY 24
08/19  81/59/70/0/0.03/.../..              26 W    AERO 28 W    RMY 27
08/20  80/56/68/-2/0.00/.../..             22 W    AERO 21 W    RMY 22 
08/21  88/61/75/+5/0.00/.../..             28 SW   AERO 26 SW   RMY 28
08/22  85/66/76/+6/0.26/.../..             18 NNE  AERO 16 S    RMY 16
08/23  89/63/76/+6/2.21/.../..             60 WNW  AERO 53 WNW  RMY 58  TSTM HAIL
08/24  87/67/77/+7/0.00/.../..             18 S    AERO 18 S    RMY 19
08/25  86/65/76/+7/0.01/.../..             35 NNW  AERO 37 NNW  RMY 35

08/26  The low since midnight is 56F, the daily normal low is 61F

DAILY RECORDS FOR AUGUST 2020

8/23/20: DAILY RECORD HIGH MAXIMUM TEMPERATURE OF 89F,
         BREAKS PREVIOUS RECORD of 88F SET IN 1918, 1947, 1949, 1996

8/23/20: DAILY RECORD PRECIPITATION OF 2.21 INS,
         BREAKS PREVIOUS RECORD OF 2.09 INS SET IN 2010

8/23/20: DAILY RECORD PEAK WIND GUST OF 60 MPH,
         TIES PREVIOUS RECORD OF 60 MPH SET IN 1940


DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):  

RECORDS FOR AUGUST 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW IN 1947

RECORDS FOR AUGUST 27
HIGH 99F IN 1948
LOW 44F IN 1885
PRECIP 2.77 INCHES IN 1946
PEAK GUST 48 MPH NW IN 1983

TODAY'S REPORT PREPARED BY: Benjamin Turner