BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, APRIL 3, 2008
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED
 
Today's observations:
 
8 A.M. EDT
Weather: Clear
Temperature: 30F, Dew point: 12F  Wind: WSW at 8 kts
Sea-level pressure: 30.50 inches Hg, rising
Visibility: 40 miles, light haze
6-hour min temp: 27F
BHO SA 1155 CLR 40 330/30/12/2408/050/ LGT HZ/ 51014 10030 20027
 
11 A.M. EDT
Weather: Clear
Temperature: 43F, Dew point: 11F, Wind: SSW at 7 kts
Wind: Variable direction SSE-WNW
Sea-level pressure: 30.49 inches Hg, falling
Visibility: 45 miles, light haze
BHO SA 1455 CLR 45 325/43/11/2007/049/ LGT HZ WND 16V29/ 58005
 
2 P.M. EDT
Weather: Clear, few cirrus SE-S-W
Temperature: 50F, Dew point: 11F, Wind: SW at 12G20 kts
Wind: Variable direction S-W
Sea-level pressure: 30.41 inches Hg, falling
Visibility: 45 miles, light haze
6-hourly max.temp: 50F
BHO SA 1755 CLR 45 299/50/11/2212G20/041/ FEW CU SE-S-W
LGT HZ WND 17V27/ 8/005 58026 10050 20030
 
WEATHER SUMMARY FOR WEDNESDAY, APRIL 2
 
TEMPERATURE (DEGREES F)
MAX.....47    NORMAL.....50
MIN.....31    NORMAL.....33
MEAN....39    NORMAL.....42
DEPARTURE FROM 30-YEAR NORMAL...........-3
TOTAL DEPARTURE FOR THE MONTH..........+11 [+5.3 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............26  DEPARTURE........+3
TOTAL HEATING UNITS FOR THE MONTH............36  DEPARTURE.......-11
TOTAL HEATING UNITS FOR THE SEASON.........5173  DEPARTURE......-338
TOTAL HEATING UNITS LAST SEASON TO DATE....5041  DIFFERENCE.....+132 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............52 W   AT  4:05 A.M. 
                   AEROVANE.............51 W   AT  4:05 A.M.
                   ASOS.................52 W   AT  4:05 A.M.
                   DAVIS................54 W   AT  4:05 A.M.
FASTEST MILE FOR YESTERDAY..............45 W   AT  1:02 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...........39 W   AT  1:03 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..........42 W   AT  1:03 A.M. 
AVERAGE WIND SPEED AND DIRECTION......23.0 W     
                   ASOS...............21.3 
                   DAVIS..............23.3 W  [279 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE......-0.15 
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.20   DEPARTURE......-0.10
                         ASOS..............0.27
TOTAL PRECIPITATION FOR THE YEAR..........17.80   DEPARTURE......+3.87
                         ASOS.............20.15 
# Includes erroneous ASOS precipitation data on 2/13/08.
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M...........0.0   DEPARTURE.....-0.1
TOTAL SNOWFALL FOR APRIL.....................0.0   DEPARTURE.....-0.3
TOTAL SNOWFALL FOR THE SEASON...............66.5   DEPARTURE.....+9.3
 
PRELIMINARY CLIMATE SUMMARY FOR APRIL 2008 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available, records not finalized
 
4/1  59/50/55/+14/0.20/0/000/00    54 S  Aero 58 MPH SSW
4/2  47/31/39/-3/0/0/.../..        52 W  Aero 51 MPH W
 
4/3  morning low temp. 27F; normal low is now 33F
 
NEW DAILY RECORDS FOR APRIL 2008
None to date.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR APRIL 3
HIGH 76 IN 1892
LOW 16 IN 1894
PRECIP 2.18 IN. IN 1990
SNOWFALL 8.0 IN. IN 1915
PEAK GUST 83e MPH NW IN 1977 [RECORD FOR MONTH]
 
RECORDS FOR APRIL 4
HIGH 71 IN 1950
LOW 12 IN 1954
PRECIP 1.45 IN. IN 1987
SNOWFALL 3.7 IN. IN 1975
PEAK GUST 80 MPH WNW IN 1963
 
TODAY'S REPORT PREPARED By: Stephanie Radner