BLUE HILL METEOROLOGICAL OBSERVATORY 
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JULY 10, 2012  
ALL TIMES ARE IN EASTERN STANDARD TIME

ANOTHER PLEASANT, SUNNY, SUMMER DAY

Yesterday's pleasant conditions have continued into today.  Temperatures
are once again quite close to normal.  Monday's high of 82F and low of 61F
put the average temperature for the day right on par, breaking the 11
day streak of above normal temperatures.

Dew point temperatures continue to run in the upper 40s to lower 50s,
providing not only a very comfortable feel to the air but also
excellent visibility near 70 miles.

The sky has remained mostly sunny with only scattered late morning
and afternoon cumulus developing.
 
Today's observations:
 
7 A.M. 
Weather: Scattered altocumulus, scattered thin cirrus, altocumulus
castellanus distant E-SSW, few altocumulus lenticularis distant SSE-SSW,
line of altocumulus W-NW-NNE, cirrus distant E-SSW, thin smoke layer
along horizon NNW-E-SW, light distant haze
Temperature: 66F; Dew Point: 52F; Wind: NW at 7 kts,
Sea-level pressure: 30.06 in Hg, rising 
Visibility: 70 miles, light distant haze
6-hour min. temp: 61F
BHO SA 1155 80 SCT 250 –SCT 70 179/66/52/3207/006/ ACC DSNT E-SSW FEW
ACSL DSNT SSE-SSW LINE AC W-NW-NNE CI DSNT E-SSW THN K LYR ALG HRZN
NNW-E-SW LGT DSNT HZ/ 8/081 51010 10066 20061 

10 A.M. 
Weather: Scattered thin cirrus, towering cumulus distant ESE-SSE, few
cumulus forming distant ESE-S and distant W-NNE, few altocumulus
lenticularis distant WSW and distant WNW-NW, cirrus distant E-SSW,
light distant haze
Temperature: 76F; Dew Point: 47F; Wind: NW at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.08 in Hg, rising slightly  
Visibility: 70 miles, light distant haze  
BHO SA 1455 250 –SCT 70 185/76/47/3204/008/ TCU DSNT ESE-SSE FEW CU
FRMG DSNT ESE-S AND DSNT W-NNE FEW ACSL DSNT WSW AND DSNT WNW-NW CI
DSNT E-SSW LGT DSNT HZ WND LGT AND VRB/ 8/341 51006

1 P.M.
Weather: Scattered cumulus, scattered altocumulus, scattered thin
cirrus, cumulus distant all quadrants except NE-ESE, few moderate
cumulus distant SE-SSW and distant WNW-N, few altocumulus lenticularis
distant WNW-NW, cirrus distant ESE-S, light distant haze
Temperature: 81F; Dew Point 50F; Wind: WSW at 7 kts,
Wind: Direction variable SSW-W
Sea-level pressure: 30.05 in. Hg, falling
Visibility: 70 miles, light distant haze
6-hour max temp: 81F 
BHO SA 1755 65 SCT 80 SCT 250 –SCT 70 176/81/50/2407/005/ CU DSNT
ALQDS XCPT NE-ESE FEW MDT CU DSNT SE-SSW AND DSNT WNW-N FEW ACSL DSNT
WNW-NW CI DSNT ESE-S LGT DSNT HZ WND 20V28/ 8/241 58009 10081 20066

WEATHER SUMMARY FOR MONDAY, JULY 9

TEMPERATURE (DEGREES F)
MAX.....82    NORMAL.....81
MIN.....61    NORMAL.....63
MEAN....72    NORMAL.....72
 
DEPARTURE FROM 30-YEAR NORMAL........................0
TOTAL DEPARTURE FOR THE MONTH......................+38 [+4.0 DEGREES/DAY]

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY.............22 W   AT  2:51 P.M.
                   AERO..................21 W   AT  2:50 P.M.
                   ASOS..................22 WNW AT  2:52 P.M.
                   DAVIS.................22 WNW AT  2:51 P.M. RMY 23
THE FASTEST MILE FOR YESTERDAY...........15 W   AT  2:54 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............15 WNW AT  3:56 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........15 WNW AT  2:51 P.M.
AVERAGE WIND SPEED AND DIRECTION........8.5 NW
                   ASOS.................8.0
                   DAVIS................7.7 NW  [325 deg]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE...........-0.11
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.38   DEPARTURE...........-0.61
                         ASOS..............0.36
TOTAL PRECIPITATION FOR THE YEAR..........18.07   DEPARTURE...........-9.89
                         ASOS.............17.98

PRELIMINARY CLIMATE SUMMARY FOR JULY 2012 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
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

7/1  89/67/78/+8/0.01/676/74        33 WSW AERO 32 MPH WSW RMY 34
7/2  84/66/75/+5/T/644/71           23 W   AERO 22 MPH W   RMY 23
7/3  85/63/74/+3/0.00/787/86        23 W   AERO 21 MPH W   RMY 20
7/4  85/66/76/+5/0.37/480/53        20 W   AERO 20 MPH W   RMY 23
7/5  81/68/75/+4/0.00/729/80        23 NW  AERO 23 MPH NW  RMY 22
7/6  86/64/75/+4/0.00/753/83        18 SSW AERO 18 MPH SSW RMY 19
7/7  81/69/75/+4/T/224/25           23 W   AERO 23 MPH W   RMY 24
7/8  87/66/77/+5/0.00/814/90        23 W   AERO 23 MPH W   RMY 25
7/9  82/61/72/0/0.00/.../..         22 W   AERO 21 MPH W   RMY 23

7/10 morning low temp: 61F; the normal low is now 63F

DAILY RECORDS FOR JULY 2012
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: Sean Fankhauser