BLUE HILL METEOROLOGICAL OBSERVATORY 
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JULY 10, 2011  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
MORE BEAUTIFUL WEATHER TODAY....
 
High pressure has continued to build across the southeast
Massachusetts region, bringing beautiful summer weather
to the summit on Sunday. Bright sunshine helped rocket
temperatures from an overnight low of 59F to the upper 70s
by 11AM EDT this morning. The air remains quite dry, though
a light haze has limited visibilities to around 60 miles.
Winds have been light, averaging only 4 MPH, and are gradually
shifting to the south direction.
 
 
Today's observations:
 
7 A.M.  
Weather: Scattered cirrus, scattered altocumulus, few
virga SE-SSE, light haze
Temperature: 67F, Dew point: 55F; Wind: NW at 4 kts
Sea-level pressure: 30.06 inches Hg, rising
Visibility: 65 miles
6-hour min. temp: 59F
BHO SA 1155 180 SCT 250 SCT 65 180/67/55/3104/006/
FEW VIRGA SE-SSE LGT HZ/ 8/031 53010 10067 20059
 
10 A.M.
Weather: Clear, few small cumulus distant NW, few altocumulus
distant N-NE and SE-W, light haze
Temperature: 77F, Dew Point: 55F;  Wind: W at 2 kts
Wind: Light and variable
Sea-level pressure: 30.08 inches Hg, rising
Visibility: 60 miles
BHO SA 1455 CLR 60 186/77/55/E2602/008/ FEW SML CU DSNT
NW FEW AC DSNT N-NE AND SE-W WND L/V LGT HZ/ 8/130 51006
 
 
WEATHER SUMMARY FOR SATURDAY, JULY 9
 
TEMPERATURE (DEGREES F)
MAX.....81    NORMAL.....81
MIN.....63    NORMAL.....61
MEAN....72    NORMAL.....71
 
DEPARTURE FROM 30-YEAR NORMAL....................+1
TOTAL DEPARTURE FOR THE MONTH...................+28 [+2.9 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............29 WNW AT 12:34 P.M.
                   AEROVANE...............32 WNW AT 12:34 P.M.
                   ASOS...................30 WNW AT 12:34 P.M.
                   DAVIS..................33 W   AT 12:34 P.M.
THE FASTEST MILE FOR YESTERDAY............22 WNW AT 12:33 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE.............21 W   AT 12:35 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE............24 W   AT 12:35 P.M.
AVERAGE WIND SPEED AND DIRECTION........10.9 NW
                   ASOS.................10.0
                   DAVIS................10.6 WNW [299 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.........-0.12
                         ASOS..............0.00  
TOTAL PRECIPITATION FOR THE MONTH..........0.61  DEPARTURE.........-0.49
                         ASOS..............0.61
TOTAL PRECIPITATION FOR THE YEAR..........27.92  DEPARTURE.........+1.15
                        ASOS..............28.47**
**ASOS data is in error due to system failure on 1/12-13
 
PRELIMINARY CLIMATE SUMMARY FOR JULY 2011 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
7/1  78/59/69/-1/0.01/530/58         15 WNW
7/2  80/61/71/+1/0.00/603/66         17 SE
7/3  79/64/72/+2/0.02/018/02         22 S
7/4  86/68/76/+6/0.00/583/64         18 SW
7/5  89/66/78/+7/0.00/784/86         15 S
7/6  88/68/78/+7/T/792/87            30 WNW AERO 35 MPH WNW TSTM
7/7  86/67/77/+6/0.00/481/53         17 WNW
7/8  74/65/70/-1/.../.../..          16 ESE TSTM
7/9  81/63/72/+1/.../.../..         
 
7/10  morning low temp: 59F; the normal low is now 62F
 
DAILY RECORDS FOR JULY 2011
None so far...
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JULY 10
HIGH 99F IN 1911
LOW 46F IN 1890
PRECIP 1.68 INS IN 1933
WIND 75 MPH W IN 1985
 
RECORDS FOR JULY 11
HIGH 98F IN 1911
LOW 49F IN 1890
PRECIP 1.87 INS IN 1959
WIND 53 MPH NW IN 1988
 
TODAY'S REPORT PREPARED BY: Eli Melaas