BLUE HILL OBSERVATORY MILTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, AUGUST 30, 2010 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TEMPERATURES SOARING UP TO NEAR 90F AGAIN
HUMIDITY CONTINUES IN MODERATE TO LOW RANGE
ALONG WITH PERFECTLY SUNNY CONDITIONS 
 
The high temperature had reach 89F (88.6 Hazen shelter)
by 2 PM EDT this afternoon after a 91F on Sunday. The dew 
point continues in the middle and upper 50's so not the same
oppressive heat we experienced earlier in the summer.
Sunshine has been complete today starting out at
about 6:20 AM EDT as a faint burn on the sun card.
Sunrise is now at 6:07 AM EDT. Today marks the 3rd
day in a row with 95 to 100% of the possible bright
sunshine and the monthly per cent rises to 56% thru
August 28th. 
 
Today's observations: 
 
7 A.M.
Weather: Scattered cirrus and few dense cirrus vicinity of station
southeast thru southwest
Temperature: 69F, Dew point: 58F; Wind: NW at 12 kts
Sea-level pressure: 30.18 inches Hg, rising
Visibility: 50 miles, thin smoke and haze southwest thru
northwest, distant haze all quadrants 
6-hour minimum temp: 65F
BHO SA 1155 220 SCT 250 SCT 50 219/69/58/3112/018/
CI/FEW DNS CI VCTY TN SE-SW THN KHZ SW-NW DSNT HZ ALQDS/
8/002 53013 10069 20065
 
10 A.M.
Weather: Clear, few cirrus distant SSE-SW
Temperature: 82F, Dew point: 61F; Wind: NW at 7 kts,
Sea-level pressure: 30.19 inches Hg, rising
Visibility: 50 miles, distant haze
BHO SA 1455 CLR 50 223/82/61/3207/019/ FEW CI DSNT SSE-SW DSNT HZ/
8/001 51004
 
1 P.M. 
Weather: Clear, small patch cirrus distant south  
Temperature: 89F, Dew point: 57F; Wind: WNW at 8 kts,
Wind: Direction variable WSW to NNW 
Sea-level pressure: 30.14 inches Hg, falling
Visibility: 50 miles, distant haze  
6-hour max. temp: 89F
BHO SA 1755 CLR 50 207/89/57/2908/014/ LONE SML PTCH CI DSNT S 
DSNT HZ WND 25V34/ 8/001 56015 10089 20069
 
WEATHER SUMMARY FOR SUNDAY, AUGUST 29
 
TEMPERATURE (DEGREES F)
MAX.....91     NORMAL.....76
MIN.....61     NORMAL.....59
MEAN....76     NORMAL.....67      
 
DEPARTURE FROM 30-YEAR AVERAGE.................+9
TOTAL DEPARTURE FOR THE MONTH.................+47 [+1.4 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............21 W   AT  8:53 P.M.
                   AEROVANE..............22 WNW AT  9:18 A.M. 
                   ASOS..................21 WNW AT  9:19 A.M.
                   DAVIS.................23 WNW AT  9:53 A.M.  
THE FASTEST MILE FOR YESTERDAY...........16 W   AT  8:54 P.M. * 
MAXIMUM 2-MINUTE ASOS AVERAGE............16 WSW AT  2:47 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE...........16 W   AT  8:54 P.M.   
AVERAGE WIND SPEED AND DIRECTION......10.6  W  
                   ASOS...............10.4
                   DAVIS..............10.4 W [270 DEG]
* Last of several occurrences. 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE........-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........8.68  DEPARTURE........+4.90
                         ASOS..............8.80
TOTAL PRECIPITATION FOR THE YEAR..........46.03  DEPARTURE.......+12.84
                         ASOS.............45.84 **
** ASOS missing rainfall due to system failure on 6/24-25
 
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2010 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  79/59/69/-3/0.00/512/59   22 SE
8/2  82/61/72/0/0.00/614/71    24 S
8/3  83/64/74/+2/0.00/397/46   32 SSW AERO 36 MPH SSW
8/4  89/71/80/+8/0.00/421/49   27 SSW
8/5  89/71/80/+8/0.86/103/12   30 W   AERO 35 MPH W    TSTM
8/6  85/62/74/+2/0.00/693/81   33 W   AERO 36 MPH W
8/7  79/58/69/-2/0.00/768/90   28 SSW
8/8  84/63/74/+3/0.00/664/78   30 S
8/9  91/69/80/+9/T/637/75      25 WSW
8/10 87/69/78/+7/0.17/660/78   18 WSW
8/11 80/66/73/+2/0.00/819/97   22 NNE
8/12 80/65/73/+2/T/362/43      21 E
8/13 77/61/69/-2/0.00/780/93   22 ENE
8/14 81/58/70/0/0.00/787/94    22 SSE
8/15 78/59/69/-1/0.00/309/37   24 SSE
8/16 78/63/71/+1/0.17/058/07   33 S   AERO 36 MPH S
8/17 90/70/80/+10/T/406/49     25 WSW AERO 27 MPH WSW
8/18 83/66/75/+5/0.00/165/20   16 SSW
8/19 88/64/76/+6/0.01/667/81   22 SW
8/20 86/63/75/+6/0.00/707/86   23 W
8/21 81/58/70/+1/0.00/483/59   18 S
8/22 68/62/65/-4/0.29/000/00   35 NE
8/23 63/58/61/-8/2.09/000/00   43 NNE AERO 47 MPH NNE
8/24 61/59/60/-9/2.40/000/00   36 NE  AERO 39 MPH NE 
8/25 64/60/62/-6/2.69/000/00   38 N   AERO 44 MPH N
8/26 81/61/71/+3/0.00/604/75   27 W
8/27 77/55/66/-2/0.00/803/100  20 W
8/28 80/56/68/0/0.00/784/98    18 SSW
8/29 91/61/76/+9/0.00/.../..   21 W
 
8/30 our morning low temp: 65F; the normal low is now 58F   
 
NEW DAILY RECORDS FOR AUGUST 2010
8/23 - new record daily rainfall of 2.09 ins;
surpasses 1.37 ins. in 1955
8/24 - new record daily rainfall of 2.40 ins;
surpasses 1.92 ins. in 1897
8/25 - new record daily rainfall of 2.69 ins;
surpasses 1.72 ins. in 1958
 
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 IN 1965
 
RECORDS FOR AUGUST 31
HIGH 94F IN 1953
LOW 42F IN 1976
PRECIP 2.46 INCHES IN 1954
PEAK GUST 125 MPH SE IN 1954 [CAROL - RECORD FOR MONTH]
 
TODAY'S REPORT PREPARED BY: Robert Skilling