BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, AUGUST 3, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
SUNSHINE IS BACK AFTER A MOSTLY CLOUDY DAY
AUGUST TEMPERATURES START OUT NEAR NORMAL
 
Sunshine and temperatures rising to the lower
80's by early this afternoon are producing
a fine early August day. The very humid conditions
of yesterday have been replaced by moderate
humidity levels today. Dew point have dropped
from the lower 70's to the low to mid-60's
today.
Clouds prevailed yesterday and our high temp-
erature was held to 77F or 4 degrees below the
normal.  Despite the clouds, approaching rain,
which occurred over New York and Connnecticut
during Sunday, dried up to just a few sprinkles
before reaching here late in the afternoon. There were
reports of over 2 inches of rainfall in New Jersey. 
 
Today's observations:
 
7 A.M.  
Weather: Clear (SKC)
Temperature: 70F, Dew point: 68F, Wind: WNW at 6 kts
Sea-level pressure: 29.97 inches Hg, rising
Visibility: 15 miles, 20 miles WNW, thin fog all quadrants
6-hour minimum temp: 67F
BHO SA 1155 CLR 15 149/70/68/2906/997/
THN FG ALQDS VSBY WNW 20 HVY DEW 53016 10070 20067
 
10 A.M.
Weather: Clear, cumulus forming all quadrants,
few cirrus SE-S
Temperature: 78F, Dew point: 63F, Wind: W at 4 kts
Sea-level pressure: 30.01 inches Hg, rising
Visibility: 25 miles, hazy
BHO SA 1455 CLR 25 161/78/63/2704/001/ CU FRMG ALQDS
FEW CI SE-S HAZY/ 8/101 53012
 
1 P.M.  
Weather: Scattered variable broken cumulus,
few moderate cumulus 
Temperature: 82F, Dew point: 64F, Wind: WSW at 3 kts
Sea-level pressure: 30.00 inches Hg, rising
Visibility: 25 miles, hazy  
6-hourly max. temp: 82F 
BHO SA 1755 45 SCT 55 SCT 25 159/82/64/2403/000/
55 SCT V BKN FEW MDT CU HAZY/ 8/200 55002
10082 20070
 
WEATHER SUMMARY FOR SUNDAY, AUGUST 2
 
TEMPERATURE (DEGREES F)
MAX.....77    NORMAL.....81
MIN.....64    NORMAL.....63
MEAN....71    NORMAL.....72
 
DEPARTURE FROM 30-YEAR AVERAGE..........-1
TOTAL DEPARTURE FOR THE MONTH............0  [+0.0 DEGREES/DAY]
 
HEATING DEGREE DATA WILL RESUME IN SEPTEMBER
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............25 SSE AT 8:52 A.M.  
                   AEROVANE..............24 SSE AT 8:52 A.N. 
                   ASOS..................24 SSE AT 8:52 A.M.
                   DAVIS.................22 ESE AT 8:51 A.M. 
FASTEST MILE FOR YESTERDAY...............16 SE  AT 8:52 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE............16 SSE AT 8:52 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE...........16 SE  AT 8:52 A.M.  
AVERAGE WIND SPEED AND DIRECTION........9.9 SSE
                   ASOS.................9.9 
                   DAVIS................9.1 SSE [160 DEG]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....trace  DEPARTURE....-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........trace  DEPARTURE....-0.24
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........31.26  DEPARTURE.....+1.61
                         ASOS.............32.38

PRELIMINARY CLIMATE SUMMARY FOR JULY 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
 
7/1  62/57/60/-10/0.51/000/00   25 NNE   TSTM
7/2  66/56/61/-9/1.00/000/00    29 SSW   TSTM
7/3  75/58/67/-3/T/283/31       23 WSW
7/4  77/59/68/-2/0/838/92       43 W      
7/5  78/54/66/-5/0/856/94       33 W     
7/6  79/60/70/-1/0/883/97       20 SSE
7/7  66/58/62/-9/0.73/027/03    28 SE    TSTM
7/8  67/56/62/-9/0.23/091/10    27 NNE   TSTM
7/9  66/55/61/-10/0/689/76      23 NE
7/10 76/54/65/-6/0/896/99       21 SW
7/11 77/56/67/-5/0.29/686/76    36 S
7/12 78/60/69/-3/0.33/650/72    30 SSW   TSTM
7/13 76/55/66/-6/0/802/89       32 SW 
7/14 75/56/66/-6/0/567/63       25 WNW
7/15 79/55/67/-5/0/826/92       30 WSW
7/16 77/62/70/-2/T/161/18       30 S
7/17 86/65/76/+4/0.01/582/65    24 ESE
7/18 84/66/75/+3/0.35/447/50    25 SSW   TSTM
7/19 80/62/71/-1/0/865/97       27 WSW
7/20 80/64/72/0/0/481/54        16 E
7/21 66/61/64/-8/0.62/000/00    29 NNE
7/22 77/61/69/-3/T/160/18       15 W
7/23 72/60/66/-6/0.68/195/22    35 NE
7/24 69/60/65/-8/2.07/088/10    46 NE    AERO 45 NE
7/25 83/61/72/-1/0/766/87       30 SSE
7/26 82/68/75/+3/0.05/422/48    32 S     
7/27 83/69/76/+4/0/588/67       30 S     TSTM 
7/28 86/67/77/+5/0/709/81       24 S
7/29 82/69/76/+4/0/070/08       29 S
7/30 84/69/77/+5/0.25/392/45    25 S     TSTM
7/31 81/66/74/+2/0.50/122/14    39 WNW   AERO 39 WNW TSTM
 
NEW DAILY RECORDS FOR JULY 2009
7/24: New record peak gust 46 MPH NE at 3:32 A.M.
      surpasses previous record of 43 MPH S IN 2008                                    
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  our morning low temp: 67F; the normal low is now 63F
 
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 3
HIGH 96F IN 1930
LOW 50F IN 1976
PRECIP 1.45 INCHES IN 1979
PEAK GUST 52 MPH NW IN 2008 [TSTM]
 
RECORDS FOR AUGUST 4
HIGH 95F IN 1928
LOW 48F IN 1900
PRECIP 1.68 INS IN 1983
PEAK GUST 48 MPH SW IN 1974
 
TODAY'S REPORT PREPARED BY: Robert Skilling