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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, AUGUST 12, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME

CLEAR AND SUNNY WEATHER TODAY 
LIGHT WINDS CONTINUE WITH NEAR NORMAL TEMPS. 
AND CONTINUED LOW HUMIDITY  

Today is a beautiful August day with low humidity and clear skies
making for a great view today. The visibility this morning was in
the range of 50-70 miles outside. This morning's low was 62 degrees
which is exactly average for today. Dewpoints have been in the mid 50's 
throughout the day. Winds have been light and variable for the most part,
blowing from the SW-W as the day has gone on. The high temperature has been
in the upper 70s, which is around average for the day.

Today's Observations:

7 A.M. 
Weather: Scattered altocumulus, broken altocumulus, broken cirrus,
few stratocumulus, altocumulus chaotic all quadrants, few altocumulus
castellanus 
Temperature: 64F; Dew Point: 60F; Wind: W at 5 kts
Sea-level pressure: 30.04 ins. Hg, rising slightly 
Visibility: 50 miles, 30 miles NE, 20 miles SE, hazy, 
Visibiity: WNW 70 miles, distant haze 
6-hr min. temp: 62F
BHO SA 1155 70 SCT E90 BKN 250 BKN 50 172/64/60/2605/004/ FEW SC 
AC CHAOTIC ALQDS FEW ACC ALQDS VSBY NE 30 SE 20 HAZY NW 70 
DSNT HZ/ 8/591 53004 10064 20062 

10 A.M. 
Weather: Scattered altocumulus, scattered cirrus, few cumulus fractus,
cumulus, moderate cumulus distant SE-S, few altocumulus castellanus ENE-S    
Temperature: 75F; Dew Point: 59F; Wind: WSW at 6 kts,
Sea-level pressure: 30.03 ins. Hg, falling slightly 
Visibility: 60 miles, except 70 miles NW, light distant  
BHO SA 1455 150 SCT 250 SCT 60 169/75/59/2505/003/ FEW CUFRA/CU 
ALQDS MDT CU DSNT SSE-S FEW ACC DSNT NE-S VSBY NW 70 DSNT HZ/
8/281 56003  

1 P.M.
Weather:  Scattered altocumulus lenticularis, scattered cirrus, 
small cumulus, few moderate except overhead-ne
Temperature: 79F; Dew Point: 56F; Wind: Estimated W at 8 kts,
Wind: Direction variable SW-WNW 
Sea-level pressure: 29.99 ins. Hg, falling
Visibility: 70 miles, light distant haze
6-hr max. temp: 80F  
BHO SA 1755  150 SCT 250 SCT 70 157/79/56/2708/999/ SML CU/FEW MDT 
CU MSTLY DSNT FEW VC XCPT NE ACSL SE-SW-OVHD DSNT CI SW-NE LGT DSNT
HZ WND 23V30/ 8/241/ 56012 10080 20064

WEATHER SUMMARY FOR SUNDAY, AUGUST 11, 2013

TEMPERATURE (DEGREES F)
MAX.....78     NORMAL.....80
MIN.....58     NORMAL.....63
MEAN....68     NORMAL.....71
 
DEPARTURE FROM 30-YEAR NORMAL...................-3
TOTAL DEPARTURE FOR THE MONTH..................-25 [-2.5 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY.............3    DEPARTURE.........-4
TOTAL COOLING UNITS FOR THE MONTH............52    DEPARTURE........-26
TOTAL COOLING UNITS FOR THE SEASON..........535    DEPARTURE.......+106
TOTAL COOLING UNITS LAST SEASON TO DATE.....576    DIFFERENCE.......-41

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY................18 W    AT   1:05 P.M. 
                   AERO.....................18 W    AT   1:05 P.M.     
                   ASOS.....................20 W    AT   1:05 P.M. 
                   DAVIS....................20 WSW  AT   1:05 P.M. RMY 21
FASTEST MILE FOR YESTERDAY..................13 W    AT   1:35 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...............15 W    AT   1:37 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE..............13 W    AT  10:35 A.M. 
AVERAGE WIND SPEED AND DIRECTION.......... .8.1 W 
                   ASOS.....................7.9 
                   DAVIS....................7.2 W  [280 deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE............-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........2.53   DEPARTURE............+0.94
                         ASOS..............2.59
TOTAL PRECIPITATION FOR THE YEAR..........37.82   DEPARTURE............+5.24
                         ASOS..............N/A*
*ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals	
	
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2013 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system added 8/9/2011 
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized

8/1  81/62/72/0/0.01/503/58          25 S   AERO 26 MPH S   RMY 27
8/2  81/62/72/0/0.23/518/60          26 W   AERO 26 MPH W   RMY 28
8/3  77/63/70/-2/T/276/32            22 WSW AERO 23 MPH WSW RMY 23
8/4  79/58/69/-3/T/645/75            25 WNW AERO 21 MPH WNW RMY 26
8/5  75/54/65/-7/0.00/.../..         26 WNW AERO 25 MPH WNW RMY 27
8/6  78/56/67/-5/0.00/.../..         17 ESE AERO 15 MPH S   RMY 16
8/7  80/59/70/-2/0.00/.../..         21 S   AERO 21 MPH S   RMY N/A
8/8  79/62/71/-1/0.08/.../..         25 S   AERO 25 MPH S   RMY N/A
8/9  73/70/72/0/2.21/000/00          37 S   AERO 39 MPH S   RMY 40
8/10 81/61/71/-1/0.00/.../..         30 WNW AERO 31 MPH WNW RMY 31  
8/11 78/58/68/-3/0.00/.../..         18 W   AERO    MPH W   RMY 21 

8/12  morning low 62F, normal low: 63F

DAILY RECORDS FOR AUGUST 2013
None so far. 

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

RECORDS FOR AUGUST 12
HIGH 99F IN 1944
LOW 48F IN 1930
PRECIP 1.89 INCHES IN 1979
PEAK GUST 50 MPH NE IN 1983

RECORDS FOR AUGUST 13
HIGH 98F IN 1944, 2002
LOW 47F IN 1902, 1957
PRECIP 2.92 INCHES IN 1989
PEAK GUST 52 MPH SSE IN 1963

TODAY'S REPORT PREPARED BY: Robert Skilling, Marc Douglas, Mark Medlinskas,
Kevin Pecora   
 
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