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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JULY 4, 2013, INDEPENDENCE DAY
ALL TIMES ARE IN EASTERN STANDARD TIME

HAZY, HOT, AND HUMID

Conditions are quite warm today with a high expected near 90F.  It is
also quite humid today, with dew point temperatures very high in the lower
70s.

Today's Observation:

7 A.M. 
Weather: Clear, few stratus dissipating, few cirrus, thin fog all
quadrants, heavy dew dissipating
Temperature: 77F; Dew Point: 73F; Wind: WSW at 10 kts.
Sea-level pressure: 30.22 ins. Hg, rising
Visibility: 12 miles, thin fog all quadrants
6-hour min. temp: 71F
BHO 1155 CLR 12 235/77/73/2510/022/ FEW STRA DSSPTNG FEW CI THN F ALQDS
HVY DEW DSSPTNG/ 8/601 51007 10077 20071 

WEATHER SUMMARY FOR WEDNESDAY, JULY 3, 2013

TEMPERATURE (DEGREES F)
MAX.....90     NORMAL.....87
MIN.....71     NORMAL.....62
MEAN....81     NORMAL.....75
 
DEPARTURE FROM 30-YEAR NORMAL.....................+4
TOTAL DEPARTURE FOR THE MONTH....................+12 [+3.8 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY................28 SW  AT  4:58 P.M.
                   AERO.....................30 SW  AT  4:58 P.M.
                   ASOS.....................29 SW  AT  5:03 P.M.
                   DAVIS....................29 SW  AT   4-5 P.M. RMY 30
FASTEST MILE FOR YESTERDAY..................22 SW  AT  4:58 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...............22 SW  AT  5:00 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..............22 SW  AT   4-5 P.M.
AVERAGE WIND SPEED AND DIRECTION..........13.2 SW
                   ASOS...................13.0
                   DAVIS..................11.6 SW [219 deg]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...Trace   DEPARTURE...........-0.11
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.05   DEPARTURE...........-0.28
                         ASOS..............0.05
TOTAL PRECIPITATION FOR THE YEAR..........32.25   DEPARTURE...........+4.95
                         ASOS..............N/A*
*ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals	
	
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
                              
7/1  82/69/76/+6/0.05/.../..         29 S   AERO 31 MPH SSW RMY 32
7/2  82/61/72/+2/T/.../..            23 SSW AERO 23 MPH SSW RMY 25
7/3  87/62/75/+4/T/.../..            28 SW  AERO 30 MPH SW  RMY 30

7/4  morning low temp: 71F; the normal low is now 62F

DAILY RECORDS FOR JULY 2013
None so far.

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

RECORDS FOR JULY 5
HIGH 98F IN 1911
LOW 48F IN 1920, 1927 & 1979
PRECIP 1.45 INS IN 1922
PEAK GUST 44e N IN 1944

TODAY'S REPORT PREPARED BY: Robert Skilling