BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, MAY 8, 2004
ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted]

MOSTLY SUNNY AND COOLER TODAY...
After the warmest temperature of the year so far on
Friday of 84 degrees, winds turned out of the north
behind a cold front Friday evening.  This dropped the
temperature to a low of 41 this morning with dew points
in the mid-teens.  The visibility is high today at
75 miles.  Clouds will return overnight with a chance
of showers Sunday morning.

Today's observations:

8 A.M. EDT
Weather: Mostly sunny with thin broken cirrus
Temperature: 46F, Dewpoint: 19F, Wind: NE 9 mph,
Sea-level pressure: 30.44 inches, rising
BHO SA 1155 250 -BKN 75 309/46/19/0508/044/ FEW LWR CI
WND LGT/ 8/001 53024 10046 20041

11 A.M. EDT
Weather: Mostly sunny with thin broken cirrus
Temperature: 51F, Dew Point: 18F, Wind: S 5 mph
BHO SA 1455 250 -BKN 75 309/51/18/1804/044/ WND LGT
AND VRB/ 8/001 54000

2 P.M. EDT
Weather: Mostly sunny with thin broken cirrus
Temperature: 58F, Dew Point: 22F, Wind: W 8 mph
Sea-level pressure: 30.37 inches, falling
Visibility: 75 miles
BHO SA 1755 200 SCT 250 -BKN 75 285/58/22/2807/037/ WND LGT
AND VRB/ 8/001 56024 10059 20046

WEATHER SUMMARY FOR FRIDAY, MAY 7:

TEMPERATURE (DEGREES F)
MAX.....84    NORMAL.....64    ASOS.....83 AT 2:52 P.M.
MIN.....48    NORMAL.....44    ASOS.....48 AT MIDNIGHT P.M.
MEAN....66    NORMAL.....54
DEPARTURE FROM 30-YEAR NORMAL.....+12
TOTAL DEPARTURE FOR THE MONTH.....+36  (+5.0 DEGREES/DAY)

HEATING DEGREE DAYS
TOTAL HEATING DEGREE DAYS FOR YESTERDAY........0   DEPARTURE....-11
TOTAL HEATING DEGREE DAYS FOR THE MONTH.......49   DEPARTURE....-37
TOTAL HEATING DEGREE DAYS FOR THE SEASON....6042   DEPARTURE....-70
TOTAL HEATING DEGREE DAYS FOR LAST SEASON...6521   DIFFERENCE..-479

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY........40 W AT 3:21 P.M.
                   AEROVANE.........41 W AT 3:21 P.M.
                   ASOS.............37 NNW AT 10:28 P.M.
FASTEST MILE FOR YESTERDAY..........29 W AT 3:26 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE.......29 W AT 3:28 P.M.
AVERAGE WIND SPEED AND DIRECTION..17.6 W
                   ASOS...........16.8

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE....-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.08   DEPARTURE....+0.20
                         ASOS..............1.05
TOTAL PRECIPITATION FOR THE YEAR..........18.43   DEPARTURE....-0.40
                         ASOS.............16.85

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL FOR THE SEASON..............58.0   DEPARTURE....+1.7


PRELIMINARY CLIMATE SUMMARY FOR MAY 2004......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

5/1  78/50/64/+12/   0/769/91        39 MPH SSW
5/2  72/56/64/+12/0.06/127/15        45 MPH S    Aerovane 49 MPH S
5/3  61/47/54/ +1/0.66/000/00        35 MPH S
5/4  58/39/49/ -4/0.32/725/85        40 MPH WNW  Aerovane 46 MPH WNW
5/5  65/38/52/ -1/   T/453/53        37 MPH S
5/6  70/45/58/ +4/   0/.../..        28 MPH SSW
5/7  84/48/66/+12/0.04/.../..        40 MPH W    Aerovane 41 MPH W
5/8  overnight low 41...


DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR MAY 8
HIGH 89F IN 2000
LOW 29F IN 1956
PRECIP 1.48 INCHES IN 1886
SNOWFALL TRACE IN 1898, 1947
PEAK GUST 68e MPH NNW IN 1943

RECORDS FOR MAY 9
HIGH 93F IN 2000
LOW 31F IN 1947
PRECIP 2.72 INCHES IN 1954
SNOWFALL 5.0 INS IN 1977 (RECORD FOR MAY)
PEAK GUST 70e MPH NE IN 1977

TODAY'S REPORT BY: Mike Iacono