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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, SEPTEMBER 23, 2005
ALL TIMES ARE IN EASTERN STANDARD TIME [unless otherwise noted]

Today's observations:

7 A.M. EST
Weather: Overcast altocumulus
Temperature: 67F, Dew point: 65F, Wind: SSW 13 kt
Sea-level pressure: 29.90 inches Hg, rising
Visibility: 3 miles with haze
BHO SA 1155 130 BKN 180 OVC 3H 127/67/65/2113/990/
FEW BINOVC ALQDS FEW ACSL SE/ 8/07/ 51009 10067 20063

10 A.M. EST
Weather: Overcast altocumulus
Temperature: 69F, Dew point: 64F, Wind: WSW at 13 kt
Sea-level pressure: 29.93 inches Hg, rising
Visibility: 12 miles with haze
BHO SA 1455 130 BKN 200 OVC 12 137/69/64/2513/993/
FEW BINOVC SE HAZY/ 8/07/ 51010

1 P.M. EST
Weather: Few stratocumulus, scattered altocumulus, overcast cirrus
Temperature: 76F, Dew point: 63F, Wind: W at 10 kt
Sea-level pressure: 29.95 inches Hg, rising
Visibility: 20 miles
BHO SA 1755 180 SCT 250 OVC 20 141/76/63/2910/995/
FEW BINOVC ALQDS FEW SC FRMG ALQDS/ 8/571 51004 6000/ 10077 20067

WEATHER SUMMARY FOR THURDAY, SEPTEMBER 22

TEMPERATURE (DEGREES F)
MAX.....82   NORMAL.....69    ASOS.....82 AT 1:30 P.M.
MIN.....62   NORMAL.....51    ASOS.....61 AT 1:08 A.M.
MEAN....72   NORMAL.....60
DEPARTURE FROM 30-YEAR NORMAL.....+12
TOTAL DEPARTURE FOR THE MONTH....+111 (+5.0 DEGREES/DAY)

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.........35 SSW AT 4:27 P.M.
                   AEROVANE..........36 SSW AT 4:44 P.M.
                   ASOS..............35 SSW AT 4:28 P.M.
                   DAVIS.............36 S
FASTEST MILE FOR YESTERDAY...........27 SSW AT 4:14 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE........26 SSW AT 4:28 P.M.
AVERAGE WIND SPEED AND DIRECTION...15.5 S
                   ASOS............15.4

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..........3.08   DEPARTURE....+0.07
                         ASOS..............3.08
TOTAL PRECIPITATION FOR THE YEAR..........42.17   DEPARTURE....+5.84
                         ASOS.............40.93*
*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/+6/0/670/87        20 SSW
9/9  70/60/65/+1/0/276/36        21 NW
9/10 71/53/62/-2/0/756/99        21 NNW
9/11 73/49/61/-3/0/709/93        28 SSW
9/12 88/60/74/+11/0/691/91       29 SW
9/13 81/66/74/+11/0/688/91       23 SSE
9/14 85/65/75/+12/0/550/73       27 S
9/15 72/66/69/+7/2.43/0/0        23 WNW
9/16 68/62/65/+3/0.13/0/0        24 NNE
9/17 67/61/64/+2/0.06/0/0        23 ENE
9/18 74/60/67/+6/0/186/25        17 W
9/19 79/57/68/+7/0/680/92        17 W
9/20 73/62/68/+7/0.05/15/2       35 W
9/21 77/58/68/+8/0/.../..        28 W
9/22 82/62/72+12/0/.../..        35 SSW
9/23 MORNING LOW 63


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

RECORDS FOR SEPTEMBER 23
HIGH      93F IN 1895,1914
LOW       33F IN 1904
PRECIP    2.67 INCHES IN 1994
PEAK GUST 62 MPH SSW IN 1989

RECORDS FOR SEPTEMBER 24
HIGH      87F IN 1959
LOW       33F IN 1885,1950,1963
PRECIP    1.19 INCHES IN 1955
PEAK GUST 54e MPH SW IN 1940

TODAY'S REPORT BY: Andrew Hoell