BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 23, 2015
ALL TIMES ARE IN EASTERN STANDARD TIME
 
DRIZZLE ENDS AROUND NOON BUT FOG REMAINS ON THIS COOL DAMP DAY
 
Light to moderate drizzle began just after the 7 o'clock observation
and continued until just before noon time.  A thick fog has covered the
area and kept visibility below 2 miles all day from the top of the tower
and while the fog has let up at times during the day, it is currently very
thick again at the 1 o'clock observation. 
 
Damp conditions continue to persist because of this and the humidity has
remained at or very near 100% all day.  Winds have remained very light and
high temperatures have remained below 70. 
 
Today's Observations:
 
7 A.M.
Weather: Thick Fog and light drizzle
Temperature: 66F; Dew Point: 66F; Wind: NE at 4 kts,
Wind: Light
Sea-level pressure: 30.05 ins. Hg, rising then falling
Visibility: 1/8th of a mile, Fog
6-hr Max temp: 67F
6-hr Min temp: 66F
24-hr precip: 0.10 ins.
BHO SA 1155 W/ X 1/8L-F 176/66/66/0404/005/ WND LGT 
8//// 58002 70010 ASOS 70007 10067 20066
 
10 A.M.
Weather: Thick Fog and light drizzle
Temperature: 69F; Dew Point 69F; Wind: N at 4 kts,
Wind: Light
Sea-level pressure: 30.05 ins. Hg, falling then rising
Visibility: 1/8th of a mile, Fog
BHO SA 1455 W/ X 1/8L-F 176/69/69/0104/005/ WND LGT/ 
8//// 53000 ASOS 60007
 
1 P.M.
Weather: Thick Fog
Temperature: 69F; Dew Point: 69F; Wind: NNE at 6 kts,
Sea-level pressure: 30.01 ins. Hg, steady then falling
Visibility: 1/8 miles, Fog
6-hr Max temp: 69F 
6-hr Min temp: 66F
6-hr Precip 0.15
BHO SA 1755 W/ X 1/8F 164/69/69/0206/001/ 8////
53012 ASOS 60015 10069 20066 
 
 
SUMMARY FOR SATURDAY, AUGUST 22, 2015
  
TEMPERATURE (DEGREES F)
MAX.....73   NORMAL.....79
MIN.....66   NORMAL.....61
MEAN....70   NORMAL.....70
 
DEPARTURE FROM 30-YEAR NORMAL........................+0
TOTAL DEPARTURE FOR THE MONTH.......................+66  [+2.9 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............5    DEPARTURE..........+0
TOTAL COOLING UNITS FOR THE MONTH.............203   DEPARTURE.........+59
TOTAL COOLING UNITS FOR THE SEASON............597   DEPARTURE........+102
TOTAL COOLING UNITS LAST SEASON TO DATE.......430   DIFFERENCE.......+167

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................18  NNE  AT   9:55 A.M. *       
                   ASOS........................19  NE   AT   9:24 A.M.    
                   DAVIS.......................18  ENE  AT   9:18 A.M. RMY 16
FASTEST MILE FOR YESTERDAY.....................10  NNE  AT   9:12 A.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE..................13  NE   AT   9:25 A.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE.................12  ENE  AT  10:25 A.M.    
AVERAGE WIND SPEED AND DIRECTION..............6.1  ENE
                   ASOS.......................6.8
                   DAVIS......................5.5 NE [041 deg.]
* Last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.10  DEPARTURE.....-0.02
                         ASOS...............0.07
TOTAL PRECIPITATION FOR THE MONTH...........2.81  DEPARTURE.....-0.19
                          ASOS..............2.78
TOTAL PRECIPITATION FOR THE YEAR...........30.17  DEPARTURE.....-3.82
                        ASOS...............N/A ***
*** ASOS annual total not available due to erroneous readings
 
PRELIMINARY CLIMATE SUMMARY FOR AUGUST CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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
 
8/1  88/68/78/+6/0.06/729/84               28 WNW RMY N/A
8/2  86/62/74/+2/0.00/865/100              24 SW  RMY N/A
8/3  89/68/79/+7/0.00/690/80               31 S   RMY N/A 
8/4  86/66/76/+4/0.31/422/49               45 W   RMY 50  TSTM 
8/5  84/64/74/+2/0.00/765/89               28 WNW RMY 27
8/6  80/59/70/-2/0.00/685/80               22 W   RMY 21
8/7  78/61/70/-2/0.00/845/99               20 ESE RMY 18
8/8  77/58/68/-4/0.00/741/87               18 E   RMY N/A
8/9  72/59/66/-6/T/458/54                  27 NNE RMY 26  
8/10 84/58/71/0/0.00/.../..                28 S   RMY N/A
8/11 70/63/67/-4/0.52/000/00               32 SSE RMY 35
8/12 83/65/74/+3/0.00/766/91               22 W   RMY 20
8/13 83/62/73/+2/0.00/832/99               18 WNW RMY 18
8/14 86/63/75/+4/0.00/837/100              21 S   RMY 23
8/15 91/66/79/+8/..../.../..               38 W   RMY 41  TSTM
8/16 87/65/76/+5/..../.../..               16 W   RMY N/A
8/17 90/70/80/+9/0.00/.../..               17 W   RMY 18
8/18 92/70/91/+10/0.27/.../..              31 W   RMY 32  TSTM
8/19 87/69/78/+8/0.00/.../..               23 S   RMY 24
8/20 85/70/78/+8/0.00/.../..               22 ESE RMY 22
8/21 82/69/76/+6/0.31/.../..               21 S   RMY 23
8/22 73/66/70/0/T/.../..                   18 ENE RMY 16
 
8/23 low since midnight is 66F; normal low is now 61F
 
DAILY RECORDS FOR AUGUST 2015
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 23
HIGH 88F IN 1918, 1947, 1949, 1996
LOW 45F IN 1923
PRECIP 2.09 INCHES IN 2010
PEAK GUST 60e MPH NW IN 1940
 
RECORDS FOR AUGUST 24
HIGH 92F IN 1947
LOW 43F IN 1971
PRECIP 2.40 INCHES IN 2010
PEAK GUST 54 MPH W IN 1986
 
TODAY'S REPORT PREPARED BY: Robert Millette