BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 9, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.  
Weather: Widespread altocumulus stratiformis;
patch of altocumulus castellanus
Temperature: 65F, Dew point: 57F, Wind: S at 10 kt
Sea-level pressure: 30.19 inches Hg, rising
Visibility: 60 miles
6-hour minimum temp: 59F
BHO SA 1155 150 SCT 60 222/65/57/1710/019/
FEW ACC NW/ 8/050 51002 10065 20059
 
10 A.M.
Weather: Overcast altocumulus stratiformis;
few stratocumulus forming; sun dimly visible
Temperature: 72F, Dew point: 59F, Wind: SSE at 12 kt
Sea-level pressure: 30.16 inches Hg, falling
Visibility: 60 miles
BHO SA 1455 180 OVC 60 212/72/59/1612/016/
FEW SC FRMNG ALQDS SUN DMLY VSBL/ 8/47/ 58010
 
1 P.M.  
Weather: Broken altostratus opacus;
thin overcast cirrus floccus
Temperature: 75F, Dew point: 58F, Wind: SSE at 12 kt
Sea-level pressure: 30.18 inches Hg, falling
Visibility: 50 miles
6-hour maximum temp: 75F
BHO SA 1755 180 BKN 220 –OVC 50 199/75/58/1512/018/
FEW BINOVC N/ 8/072 58013 10075 20065 
 
WEATHER SUMMARY FOR SATURDAY, AUGUST 8
 
TEMPERATURE (DEGREES F)
MAX.....74    NORMAL.....80
MIN.....55    NORMAL.....62
MEAN....65    NORMAL.....71
 
DEPARTURE FROM 30-YEAR AVERAGE..........-6
TOTAL DEPARTURE FOR THE MONTH...........+1  [0 DEGREES/DAY]
 
HEATING DEGREE DATA WILL RESUME IN SEPTEMBER
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............21 WNW AT  1:18 P.M.
                   AEROVANE..............21 WNW AT  1:17 P.M.
                   ASOS..................18 W   AT  1:51 P.M.  
                   DAVIS.................21 WNW AT  1:18 P.M.
FASTEST MILE FOR YESTERDAY...............13 WNW AT  1:06 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............13 SSW AT 11:44 P.M.   
MAXIMUM 2-MINUTE DAVIS AVERAGE...........14 WNW AT  2:28 A.M.
AVERAGE WIND SPEED AND DIRECTION........8.4 WNW
                   ASOS.................8.8
                   DAVIS................8.5 W [280 DEG]
* last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE....-0.13
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH.........Trace   DEPARTURE....-1.01
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........31.26   DEPARTURE....+0.84
                         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/+1/0/823/95    18 SSE
8/2  77/64/71/-1/T/104/12    25 SSE
8/3  84/67/76/+4/0/638/74    17 SW
8/4  83/66/75/+3/0/714/83    23 S
8/5  86/67/77/+5/T/378/44    27 SSW
8/6  76/61/69/-3/0/564/66    18 SSE
8/7  79/58/69/-2/0/.../..    32 W
8/8  74/55/65/-6/0/.../..    21 WNW
8/9  TODAY'S MORNING LOW WAS 59F
 
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 9
HIGH 100F IN 1949
LOW 49F IN 1899
PRE 2.65 INS IN 1976
PEAK GUST 90 MPH SW IN 1968
 
RECORDS FOR AUGUST 10
HIGH 101F IN 1949 [STATION RECORD MAXIMUM - Tied with 8/2/1975]
LOW 49F IN 1964
PRE 2.27 INS IN 1952
PEAK GUST 88e MPH S IN 1976
 
TODAY'S REPORT PREPARED BY: Andrew Hoell