BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JUNE 28, 2009   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.  
Weather: Obscured by light drizzle and fog
Temperature: 58F, Dew point: 58F, Wind: N at 12G18 kt
Sea-level pressure: 29.73 inches Hg, steady
Visibility: 1/16 of a mile
6-hour minimum temp: 58F
24-hour rainfall: 0.20 inches
BHO SA 1155 W2 X1 1/16L-F 069/58/58/3512G18/973/
8//// 6//// 70020 10059 20058
 
10 A.M.  
Weather: Overcast stratus, fog
Temperature: 62F, Dew point: 62F, Wind: N at 8 kt
Sea-level pressure: 29.70 inches Hg, falling
Visibility: 1 mile
BHO SA 1455 E5 OVC 1F 059/62/62/3508/970/ 8/6// 6001/ 56010
 
WEATHER SUMMARY FOR SATURDAY, JUNE 27
 
TEMPERATURE (DEGREES F)
MAX.....78    NORMAL.....78
MIN.....59    NORMAL.....59
MEAN....69    NORMAL.....69
 
DEPARTURE FROM 30-YEAR NORMAL............0
TOTAL DEPARTURE FOR THE MONTH..........-99 [-3.9 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............0  DEPARTURE.......-1
TOTAL HEATING UNITS FOR THE MONTH...........110  DEPARTURE......+39
TOTAL HEATING UNITS FOR THE SEASON.........6231  DEPARTURE.....-137
TOTAL HEATING UNITS LAST SEASON TO DATE....5942  DIFFERENCE....+289
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............23 N   AT 10:05 P.M. *
                   AEROVANE..............20 N   AT  9:56 P.M.
                   ASOS..................22 NE  AT  9:56 P.M.
                   DAVIS.................21 N   AT 10:04 P.M.
FASTEST MILE FOR YESTERDAY...............17 N   AT 10:06 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............15 NNE AT 10:07 P.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE...........16 N   AT 10:06 P.M.  
AVERAGE WIND SPEED AND DIRECTION........8.0 W
                   ASOS.................8.7
                   DAVIS................8.0 NNW [339]
* last of several occurrences....
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.20  DEPARTURE....+0.07
                         ASOS..............0.21
TOTAL PRECIPITATION FOR  JUNE..............4.58  DEPARTURE....+1.04
                         ASOS..............4.56 
TOTAL PRECIPITATION FOR THE YEAR..........23.08  DEPARTURE....-2.20
                         ASOS.............24.11 
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
 
6/1  69/41/55/-7/0/706/78          29 SSW    AERO 25 MPH SSW
6/2  76/53/65/+3/T/525/58          28 S      AERO 24 MPH S
6/3  69/54/62/0/T/254/28           23 SSW    
6/4  73/53/63/0/0/327/36           22 SSE    
6/5  64/51/58/-5/0.05/000/00       21 NE
6/6  73/51/62/-1/0.01/428/47       25 SSE
6/7  79/56/68/+4/0/583/64          28 W      AERO 24 MPH W
6/8  73/57/65/+1/0/529/58          18 ENE
6/9  59/51/55/-9/0.10/000/00       27 E
6/10 59/52/56/-8/0.00/000/00       21 NE    
6/11 57/52/55/-10/0.17/000/00      23 NNE    AERO 21 MPH NE
6/12 70/53/62/-3/0.43/119/13       30 SSE    AERO 29 MPH SSE
6/13 75/59/67/+2/T/796/87          23 NNE
6/14 63/54/59/-6/0.34/101/11       20 E
6/15 60/52/56/-10/0.06/027/03      20 NE
6/16 64/51/58/-8/T/568/62          22 NNE  
6/17 74/50/62/-4/0/807/88          28 S      AERO 24 MPH S
6/18 65/52/59/-7/0.44/000/00       35 ESE
6/19 70/61/66/-1/0.47/000/00       33 SE     AERO 31 MPH SE
6/20 76/60/68/+1/0/266/29          21 NNE
6/21 61/57/59/-8/0.55/000/00       44 N      AERO 42 MPH N
6/22 60/58/59/-8/1.26/000/00       42 NNE    AERO 39 MPH NNE 
6/23 64/57/61/-7/0.33/000/00       38 N      AERO 33 MPH N
6/24 62/55/59/-9/0.12/000/00       27 N     
6/25 74/58/66/-2/0.02/.../..       21 SSW  
6/26 79/62/71/+3/0.03/.../..       30 WSW
6/27 78/59/69/0/.../.../..         23 N
 
NEW DAILY RECORDS FOR JUNE 2009 TO DATE...
NONE
 
DAILY EXTREMES
 
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 28
HIGH 95F IN 1991
LOW 47F IN 1970
PRECIP 2.09 INS IN 1938
PEAK GUST 52 MPH WSW IN 1993
 
RECORDS FOR JUNE 29
HIGH 93F IN 1933
LOW 42F IN 1919
PRECIP 1.60 INS IN 1889
PEAK GUST 49 MPH S IN 1957
 
TODAY'S REPORT PREPARED BY: Andrew Hoell