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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, SEPTEMBER 10, 2005
ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted]

BRIGHT SUNSHINE WITH GREAT VISIBILITY TODAY...
The temperature is slightly cooler than normal today with a
morning low of 53 and a high so far of 69.  Dew points have dropped
to around 40 under a bright sunny sky.  Visibility has been very high
today at about 80 miles.

Today's observations:

7 A.M. EST
Weather: Clear with a few distant altocumulus and stratocumulus
Temperature: 58F, Dew point: 50F, Wind: NW 9 mph
Sea-level pressure: 30.21 inches, rising
Visibility: 80 miles
BHO SA 1155 CLR 80 231/58/50/3208/021/ AC DSNT NNE-E FEW SC E SC DSNT
ENE-SE WND LGT/ 8/530 51014 10059 20053

10 A.M. EST
Weather: Clear, few small cumulus
Temperature: 65F, Dew point: 42F, Wind: NW 10 mph
Sea-level pressure: 30.22 inches, rising
Visibility: 80 miles
BHO SA 1455 CLR 80 234/65/42/3209/022/ FEW CU NNE-W SC DSNT E-SE/
8/100 53003

1 P.M. EST
Weather: Clear, few cumulus
Temperature: 69F, Dew point: 38F, Wind: NW 11 mph
Sea-level pressure: 30.20 inches, falling
Visibility: 80 miles
BHO SA 1755 CLR 80 227/69/38/3110/020/ FEW CU DSNT N CU DSNT SE-W/
8/100 56007 10069 20058


WEATHER SUMMARY FOR FRIDAY, SEPTEMBER 9

TEMPERATURE (DEGREES F)
MAX.....70   NORMAL.....73    ASOS.....70 AT N/A
MIN.....60   NORMAL.....55    ASOS.....60 AT N/A
MEAN....65   NORMAL.....64
DEPARTURE FROM 30-YEAR NORMAL......+1
TOTAL DEPARTURE FOR THE MONTH.....+30 (+3.1 DEGREE/DAY)

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.........21 NW AT 4:55 A.M.
                   AEROVANE..........23 NW AT 4:55 A.M.
                   ASOS..............18 NE AT N/A
                   DAVIS.............21 NW AT 5:03 A.M.
FASTEST MILE FOR YESTERDAY...........16 NW AT 5:03 A.M.*
MAXIMUM 2-MINUTE ASOS AVERAGE........N/A
AVERAGE WIND SPEED AND DIRECTION.....9.2 W
                   ASOS..............N/A
*LAST OF SEVERAL OCCURRENCES

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE....-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.41   DEPARTURE....-0.78
                         ASOS..............N/A
TOTAL PRECIPITATION FOR THE YEAR..........39.50   DEPARTURE....+4.99
                         ASOS..............N/A*
*EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28.


PRELIMINARY CLIMATE SUMMARY FOR SEPTEMBER 2005......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

9/1  81/73/73/+6/0.41/773/98     28 WNW
9/2  83/62/73/+7/0/786/100       23 WSW
9/3  78/61/70/+4/0/782/100       25 WNW
9/4  78/60/69/+3/0/725/93        21 NE
9/5  70/57/64/-1/0/770/99        24 NNE
9/6  74/56/65/0/775/100          16 S
9/7  81/57/69/+4/0/742/96        21 S
9/8  83/59/71/+6/0/.../..        23 SSW
9/9  70/60/65/0/0/.../..         21 NW
9/10 ...overnight low 53


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

RECORDS FOR SEPTEMBER 10
HIGH 90F IN 1931,1989
LOW  41F IN 1956
PRECIP 5.60 INCHES IN 1999 (DAILY RECORD FOR SEPTEMBER)
PEAK GUST 48 MPH NW IN 1972

RECORDS FOR SEPTEMBER 11
HIGH 93F IN 1983
LOW  37F IN 1917
PRECIP 5.23 INCHES IN 1954 (HURRICANE EDNA)
PEAK GUST 101 MPH NW IN 1954 (HURRICANE EDNA)

TODAY'S REPORT BY: Mike Iacono