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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, APRIL 10, 2004
ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted]

SUNNY AND WARM TODAY...RAIN TO RETURN EARLY NEXT WEEK...
The high temperature has reached the mid-50s as of early
afternoon, after a high temperature of 60 on Friday.
A very light shower brought a trace of precipitation on
Friday evening.  The monthly rainfall total is now over
four inches, well above normal, but the annual rainfall
departure is still more than three inches.

Today's observations:

8 A.M. EDT
Weather: Clear with distant cirrus
Temperature: 40F, Dewpoint: 19F, Wind: W 14 mph,
Sea-level pressure: 29.93 inches, falling
BHO SA 1155 CLR 75 135/40/19/2812/993/ FEW CI DSNT S-SW FEW AC
DSNT N/ 8/031 53024 10039 20034
METAR KBHO 101155Z 28012KT 75SM FEW120 FEW250 04/M07 A2993 RMK
SLP135 8/031 T00441073 10039 20012 53024

11 A.M. EDT
Weather: Scattered cumulus with distant cirrus
Temperature: 50F, Dew Point: 16F, Wind: W 15G26 mph
BHO SA 1455 50 SCT 75 128/50/16/2813G23/991/ FEW CI DSNT SE-SW/
8/101 58007
METAR KBHO 101455Z 28013G23KT 75SM FEW050 FEW250 10/M09 A2991
RMK SLP128 8/101 T01001089 58007

2 P.M. EDT
Weather: Scattered cumulus and thin cirrus
Temperature: 54F, Dew Point: 16F, Wind: WNW 16G29 mph
Sea-Level pressure: 29.89 inches, falling
BHO SA 1755 70 SCT 250 -SCT 75 121/54/16/2914G25/989/ WND 26V32
PK WND 2930/32/ 8/101 56007 10054 20040
METAR KBHO 101755Z 29014G25KT 260V320 75SM FEW070 FEW250 12/M09
A2989 RMK PK WND 2930/32 SLP121 8/101 T01221089 56007 10122 20044


WEATHER SUMMARY FOR FRIDAY, APRIL 9:

TEMPERATURE (DEGREES F)
MAX.....60    NORMAL.....53    ASOS.....60 AT 1:41 P.M.
MIN.....39    NORMAL.....35    ASOS.....38 AT 11:59 P.M.
MEAN....50    NORMAL.....44
DEPARTURE FROM 30-YEAR NORMAL.....+6
TOTAL DEPARTURE FOR THE MONTH....-19  (-1.9 DEGREES/DAY)

HEATING DEGREE DAYS
TOTAL HEATING DEGREE DAYS FOR YESTERDAY.......15   DEPARTURE.....-6
TOTAL HEATING DEGREE DAYS FOR THE MONTH......220   DEPARTURE....+19
TOTAL HEATING DEGREE DAYS FOR THE SEASON....5712   DEPARTURE....+47
TOTAL HEATING DEGREE DAYS FOR LAST SEASON...6094   DIFFERENCE..-382

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY........32 W AT 4:30 P.M.
                   AEROVANE.........36 W AT 2:37 P.M.
                   ASOS.............31 W AT 4:16 P.M.
FASTEST MILE FOR YESTERDAY..........26 W AT 4:16 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE.......25 W AT 4:17 P.M.
AVERAGE WIND SPEED AND DIRECTION..12.5 W
                   ASOS...........12.6

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE   DEPARTURE....-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........4.08   DEPARTURE....+2.58
                         ASOS..............3.84
TOTAL PRECIPITATION FOR THE YEAR..........11.75   DEPARTURE....-3.08
                         ASOS.............10.72

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL FOR 24 HRS ENDING 7 A.M......0.0   DEPARTURE....-0.1
TOTAL SNOWFALL FOR THE MONTH................0.5   DEPARTURE....-1.0
TOTAL SNOWFALL FOR THE SEASON..............58.0   DEPARTURE....+4.1


PRELIMINARY CLIMATE SUMMARY FOR APRIL 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

4/1  41/36/39/-2/3.47/0/000/00         44 MPH NE
4/2  37/36/36/-5/0.30/0/000/00         41 MPH NE
4/3  38/35/37/-5/0/0/0/000/00          25 MPH NE
4/4  47/35/41/-1/0.22/0/008/01         32 MPH NW
4/5  40/27/34/-9/0.09/0.5/178/23       45 MPH NW  Aerovane 46 MPH NW
4/6  49/26/38/-5/0/0/747/96            52 MPH WNW Aerovane 56 MPH WNW
4/7  55/32/44/+1/0/0/530/68            31 MPH WSW
4/8  58/32/45/+1/0/0/.../..            25 MPH S
4/9  60/39/50/+6/T/0/.../..            32 MPH W
4/10 ..overnight low 34

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

RECORDS FOR APRIL 10
HIGH 83 IN 1922
LOW  20 IN 1985
PRECIP 2.40 INCHES IN 1935
SNOWFALL 10.1 INCHES IN 1996
PEAK GUST 66 MPH WNW IN 1967

RECORDS FOR APRIL 11
HIGH 78 IN 1945
LOW  19 IN 1909
PRECIP 1.72 INCHES IN 2003
SNOWFALL 9.5 INCHES IN 1958
PEAK GUST 65 MPH NW IN 1963

TODAY'S REPORT BY: Mike Iacono