BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, AUGUST 6, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:

7 A.M.   
Weather: Scattered altocumulus, thin broken cirrus, 
few stratocumulus E-SE
Temperature: 68F, Dew point: 59F, Wind: NNW at 6 kts
Sea-level pressure: 29.95 inches Hg, rising
Visibility: 60 miles
6-hour minimum temp: 61F
BHO SA 1155 150 SCT 250 –BKN 60 142/68/59/3406/995/ 
FEW SC E-SE/ 8/531 51008 10068 20061

10 A.M. 
Weather: Scattered altocumulus, thin broken cirrus
Temperature: 73F, Dew point: 54F, Wind: ENE at 7 kts 
Wind: Direction variable NNE to E
Sea-level pressure: 29.97 inches Hg, rising
Visibility: 65 miles
BHO SA 1455 150 SCT 250 –BKN 65 148/73/54/0607/997/ 
WND GRDLY VEERING PST HR WND 02V09/ 8/531 53006

1 P.M.   
Weather: Scattered stratocumulus and altocumulus, thin
broken altostratus, few moderate cumulus, break in overcast 
NW to N
Temperature: 73F, Dew point: 58F, Wind: E at 5 kts,
Wind: Light and variable
Sea-level pressure: 29.94 inches Hg, falling
Visibility: 50 miles, light haze
6-hourly max. temp: 76F  
BHO SA 1755 50 SCT 140 SCT 180 OVC 50 139/73/58/1005/994/ 
FEW MDT CU BINOVC NW-N LGT HZ WND LGT AND VRB 
8/27/ 58009 10076 20068
  
WEATHER SUMMARY FOR WEDNESDAY, AUGUST 5

TEMPERATURE (DEGREES F)
MAX.....86    NORMAL.....81
MIN.....67    NORMAL.....62 
MEAN....77    NORMAL.....72

DEPARTURE FROM 30-YEAR AVERAGE..........+5
TOTAL DEPARTURE FOR THE MONTH..........+12  [+2.2 DEGREES/DAY]

HEATING DEGREE DATA WILL RESUME IN SEPTEMBER 

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............27 SSW AT 11:15 A.M. 
                   AEROVANE..............24 SSW AT 11:15 A.M.
                   ASOS..................25 SW  AT 11:15 A.M.   
                   DAVIS.................28 SSW AT 11:15 A.M.     
FASTEST MILE FOR YESTERDAY...............20 SSW AT 11:16 A.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE............20 SW  AT 11:22 A.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE...........21 SSW AT 11:15 A.M.     
AVERAGE WIND SPEED AND DIRECTION.......12.3 S
                   ASOS................12.0  
                   DAVIS...............12.3 SSW [216 DEG]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...Trace   DEPARTURE....-0.13
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH.........Trace   DEPARTURE....-0.62
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........31.26   DEPARTURE....+1.23
                         ASOS.............32.38 
																																																															
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2009 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

8/1  83/63/73/+1/0/.../..    18 SSE
8/2  77/64/71/-1/T/.../..    25 SSE
8/3  84/67/76/+4/0/.../..    17 SW 
8/4  83/66/75/+3/0/.../..    23 S
8/5  86/67/77/+5/T/.../..    27 SSW

8/6  our morning low temp: 61F; the normal low is now 62F
 
NEW DAILY RECORDS FOR AUGUST 2009 TO DATE...
NONE
  
DAILY EXTREMES

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

RECORDS FOR AUGUST 6
HIGH 95F IN 1931
LOW 48F IN 1934
PRECIP 1.47 INCHES IN 1995
PEAK GUST 44e MPH SSW IN 1940

RECORDS FOR AUGUST 7
HIGH 95F IN 1924
LOW 51F IN 2004
PRECIP 3.32 INCHES IN 1926
PEAK GUST 51 MPH NE 1975

TODAY'S REPORT PREPARED BY: Stephanie Radner