BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 23, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.  
Weather: Chaotic sky, hazy
Temperature: 71F, Dew point: 70F, Wind: WNW at 10 kt
Sea-level pressure: 29.76 inches Hg, rising
Visibility: 9 miles
6-hour minimum temp: 69F
BHO SA 1155 20 SCT 60 SCT 130 BKN 200 BKN 9 077/71/70/3010/976/
CHAOTIC SKY HAZY/ 8/442 53022 6//// 70053 10071 20069
 
10 A.M.
Weather: Broken altocumulus stratiformis,
broken cirus spissatus
Temperature: 78F, Dew point: 68F, Wind: W at 6 kts, Light and variable
Sea-level pressure: 29.83 inches Hg, rising
Visibility: 30 miles, hazy
BHO SA 1455 120 SCT 150 BKN 220 BKN 30 100/78/68/2806/983/
WND L/V HAZY/ 8/033 53023
 
1 P.M.
Weather: Scattered cumulus congestus,
scattered altocumulus stratiformis,
scattered altocumulus lenticularis,
broken cirrus spissatus
Temperature: 85F, Dew point: 65F, Wind: S at 8 kts, Light and variable
Sea-level pressure: 29.85 inches Hg, rising
Visibility: 30 miles, hazy
6-hourly max. temp: 85F
BHO SA 1755 30 SCT 150 SCT 200 BKN 30 109/85/65/1808/985/
WND L/V HAZY/ 8/233 51009 10085 20071
 
 
WEATHER SUMMARY FOR SATURDAY, AUGUST 22
 
TEMPERATURE (DEGREES F)
MAX.....86    NORMAL.....78
MIN.....71    NORMAL.....60
MEAN....79    NORMAL.....69
 
DEPARTURE FROM 30-YEAR AVERAGE..........+10
TOTAL DEPARTURE FOR THE MONTH...........+72 [+3.1 DEGREES/DAY]
 
HEATING DEGREE DATA WILL RESUME IN SEPTEMBER
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............30 S AT 12:49 A.M.
                   AEROVANE..............28 S AT 12:49 A.M.
                   ASOS..................28 S AT 12:50 A.M. 
                   DAVIS.................29 S
FASTEST MILE FOR YESTERDAY...............22 S AT 12:43 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............22 S AT 12:16 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE...........22 S
AVERAGE WIND SPEED AND DIRECTION.......11.6 S
                   ASOS................11.2
                   DAVIS...............11.0 SSE [154 DEG]
* last of several occurrences
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.53   DEPARTURE....+0.40
                         ASOS..............0.53
TOTAL PRECIPITATION FOR THE MONTH..........1.71   DEPARTURE....-1.12
                         ASOS..............1.72
TOTAL PRECIPITATION FOR THE YEAR..........32.97   DEPARTURE....+0.73
                         ASOS.............34.10
 
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/.../..   21 WSW
8/18 91/72/82/+12/0/.../..   29 SSW
8/19 89/71/80/+10/0/.../..   23 SW
8/20 83/70/77/+8/0.34/.../.. 21 SSE  TSTM
8/21 88/72/80/+11/0/.../..   40 S    AERO 39 MPH S
8/22 86/71/79/+10/../.../..  28 S
 
NEW DAILY RECORDS FOR AUGUST 2009 TO DATE...
 
8/19: RECORD HIGH MINIMUM TEMPERATURE 71F;
      equals record previously set in 2002
 
DAILY EXTREMES
 
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 23
HIGH 88F IN 1918, 1947, 1949, 1996
LOW 45F IN 1923
PRECIP 1.37 INCHES IN 1955
PEAK GUST 60e MPH NW 1940
 
RECORDS FOR AUGUST 24
HIGH 92F IN 1947
LOW 43F IN 1971
PRECIP 1.92 INCHES IN 1897
PEAK GUST 54 MPH W 1986
 
TODAY'S REPORT PREPARED BY: Andrew Hoell