BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 29, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HEAVY RAINS DRENCHING SOUTHERN NEW ENGLAND TODAY...
EXTRATROPICAL LOW INCLUDING REMNANTS OF TROPICAL
STORM DANNY TO PASS JUST OFFSHORE THIS EVENING...
Rainfall that began Friday afternoon expanded into
areas of heavier rain across much of southeastern
New England today.  The storm total is 1.37 inches
at the Observatory as of 2 PM EDT. The temperature
has remained cool all day with a high temperature
of 65 occurring earlier this morning.  Winds have
been light much of the day, but the winds are
increasing out of the NNE this afternoon, with
a peak so far of 26 mph NNE at 2:25 PM EDT.
 
Today's observations:
 
7 A.M.  
Weather: Sky obscured, light rain and fog
Temperature: 62F, Dew point: 62F, Wind: ESE at 9 kts
Sea-level pressure: 29.98 inches Hg, falling
Visibility: 1/16 mile   
6-hour minimum temp: 54F
24-hour precipitation: 0.68 inch
BHO SA 1155 W2 X 1/16R-F 151/62/62/1109/998/ 8////
56017 6//// 70068 10062 20054
 
10 A.M.
Weather: Partial obscuration, overcast stratus fractus
and nimbostratus, moderate rain and fog
Temperature: 65F, Dew point: 65F, Wind: NE at 6 kts
Sea-level pressure: 29.92 inches Hg, falling
Visibility: 1/2 mile, variable 1/4 - 1 1/2 miles
3-hour precipitation: 0.18 inch
BHO SA 1455 –X E3 OVC 1/2VRF 132/65/65/0406/992/ F5
VSBY 1/4V11/2 WND LGT/ 8/72/ 56019 6018/
 
1 P.M.
Weather: Sky obscured, light rain and fog,
occasional moderate rain
Temperature: 64F, Dew point: 64F, Wind: NNE at 13 kts
Sea-level pressure: 29.81 inches Hg, falling rapidly
Visibility: 1/16 mile
6-hour max. temp: 65F 
6-hour precipitation: 0.69 inch
BHO SA 1755 W2 X 1/16R-F 094/64/64/0213/981/ R- OCNL R
PRESFR/ 8//// 58038 6069/ 10065 20062
 
 
WEATHER SUMMARY FOR FRIDAY, AUGUST 28
 
TEMPERATURE (DEGREES F)
MAX.....71    NORMAL.....76
MIN.....55    NORMAL.....59
MEAN....63    NORMAL.....68
 
DEPARTURE FROM 30-YEAR AVERAGE...........-5
TOTAL DEPARTURE FOR THE MONTH...........+94 [+3.2 DEGREES/DAY]
 
HEATING DEGREE DATA WILL RESUME IN SEPTEMBER
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............26 SE  AT  8:48 P.M.
                   AEROVANE..............25 SE  AT  8:48 P.M.
                   ASOS..................24 SSE AT  8:49 P.M.
                   DAVIS.................24 SE  AT  8:48 P.M.
FASTEST MILE FOR YESTERDAY...............19 E   AT 11:13 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE............17 ESE AT 11:16 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........19 E   AT 10:45 P.M.
AVERAGE WIND SPEED AND DIRECTION........10.7 NNE
                   ASOS..................9.7
                   DAVIS.................9.3 NE [054 DEG]
* Last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.68   DEPARTURE....+0.54
                         ASOS..............0.67
TOTAL PRECIPITATION FOR THE MONTH..........2.39   DEPARTURE....-1.25
                         ASOS..............2.39
TOTAL PRECIPITATION FOR THE YEAR..........33.65   DEPARTURE....+0.60
                         ASOS.............34.77
 
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 morning low temp: 54F; the normal low is now 59F
 
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 29
HIGH 95F IN 1953
LOW 41F IN 1982
PRECIP 2.88 INCHES IN 1962
PEAK GUST 70e MPH S 1949
 
RECORDS FOR AUGUST 30
HIGH 94F IN 1953
LOW 39F IN 1965
PRECIP 2.75 INCHES IN 1936
PEAK GUST 43 MPH NW 1965
 
TODAY'S REPORT PREPARED BY: Mike Iacono