BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 30, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.  
Weather: Low overcast with fog
Temperature: 56F, Dew point: 55F, Wind: Light and variable
Sea-level pressure: 29.91 inches Hg, rising
Visibility: 1 mile
6-hour minimum temp: 53F
24-hour precipitation: 1.12 inches
BHO SA 1155 5 OVC 1F 129/56/55/2106/991/
STRA DFTG OVR SMT WND L/V/ 8/6// 50013 70112 10055 20053
 
10 A.M.
Weather: Few cumulus humilis,
scattered altocumulus stratiformis,
overcast cirrus radiatus
Temperature: 62F, Dew point: 59F, Wind: S at 6 kt
Sea-level pressure: 29.94 inches Hg, rising
Visibility: 15 miles
BHO SA 1455 100 SCT 150 SCT 200 OVC 15 138/62/59/1706/994/
FEW SC DSNT SW WND LGT/ 8/252 53009
 
1 P.M.
Weather: Few cumulus humilis,
scattered altostratus opacus,
scattered altocumulus stratiformis
broken cirrus fibratus
Temperature: 71F, Dew point: 64F, Wind: Light and variable
Sea-level pressure: 29.90 inches Hg, falling
Visibility: 30 miles, hazy
6-hour max. temp: 71F 
BHO SA 1755 150 SCT 250 BKN 30 125/71/64/1307/990/
FEW SC ALQDS WND L/V HAZY/ 8/151 56013 10071 20056
 
 
WEATHER SUMMARY FOR SATURDAY, AUGUST 29
 
TEMPERATURE (DEGREES F)
MAX.....65    NORMAL.....76
MIN.....53    NORMAL.....59
MEAN....59    NORMAL.....67
 
DEPARTURE FROM 30-YEAR AVERAGE...........-8
TOTAL DEPARTURE FOR THE MONTH...........+86 [+3.0 DEGREES/DAY]
 
HEATING DEGREE DATA WILL RESUME IN SEPTEMBER
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............35 WNW AT  5:37 P.M.
                   AEROVANE..............35 WNW AT  5:45 P.M.
                   ASOS..................33 N   AT  5:39 P.M.
                   DAVIS.................36 WNW AT  5:38 P.M.
FASTEST MILE FOR YESTERDAY...............26 WNW AT  5:37 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............25 N   AT  5:55 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........23 NW  AT  5:38 P.M.
AVERAGE WIND SPEED AND DIRECTION.......12.0 NW
                   ASOS................11.7
                   DAVIS...............12.1 NNE [23 DEG]
* Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....1.12   DEPARTURE....+0.98
                         ASOS..............1.15
TOTAL PRECIPITATION FOR THE MONTH..........3.51   DEPARTURE....-0.27
                         ASOS..............3.54
TOTAL PRECIPITATION FOR THE YEAR..........34.77   DEPARTURE....+1.58
                         ASOS.............35.92
 
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  TSTM
8/6  76/61/69/-3/0/564/66     18 SSE
8/7  79/58/69/-2/0/836/98     32 W
8/8  74/55/65/-6/0/791/93     21 WNW
8/9  76/59/68/-3/T/178/21     25 SSE 
8/10 87/66/77/+6/0.12/584/69  27 W    TSTM 
8/11 84/66/75/+4/0.54/684/81  25 NE   TSTM 
8/12 67/63/65/-6/T/000/00     18 N
8/13 66/60/63/-8/0.18/042/05  23 NNE
8/14 83/58/71/+1/0/762/91     16 S
8/15 88/66/77/+7/0/810/97     18 S
8/16 90/68/79/+9/0/749/90     22 S
8/17 91/69/80/+10/0/754/91    21 WSW
8/18 91/72/82/+12/0/776/94    29 SSW
8/19 89/71/80/+10/0/717/87    23 SW
8/20 83/70/77/+8/0.34/558/68  21 SSE  TSTM
8/21 88/72/80/+11/T/385/47    40 S    AERO 39 MPH S
8/22 86/71/79/+10/0.03/629/77 28 S
8/23 86/69/78/+9/0.50/367/45  25 S   
8/24 84/67/76/+7/0/.../..     30 N 
8/25 82/65/74/+6/0/.../..     21 S
8/26 84/65/75/+7/0/.../..     32 W
8/27 75/56/66/-2/0/.../..     29 NW
8/28 71/55/63/-5/.../.../..   26 SE
8/29 65/53/59/-8/.../.../../  35 WNW
 
NEW DAILY RECORDS FOR AUGUST 2009 TO DATE...
 
8/19: RECORD HIGH MINIMUM TEMPERATURE 71F;
      equals record previously set in 2002
8/23: RECORD HIGH MINIMUM TEMPERATURE 69F;
      equals record previously set in 1906
 
DAILY EXTREMES
 
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW 1965
 
RECORDS FOR AUGUST 31
HIGH 94F IN 1953
LOW 42F IN 1976
PRECIP 2.46 INCHES IN 1954
PEAK GUST 125 MPH SE 1954 [CAROL - RECORD FOR MONTH]
 
TODAY'S REPORT PREPARED BY: Andrew Hoell