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

DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JULY 17, 2005
ALL TIMES ARE IN EASTERN STANDARD TIME

Today's observations:

7 A.M. EST
Weather: Overcast stratocumulus
Temperature: 69F, Dew point: 69F, Wind: 9 kt SE
Sea-level pressure: 30.16 inches Hg, rising
Visibility: 3/4 of a mile with fog
BHO SA 1155 E4 OVC 3/4F 213/69/69/1309/016/
8/4// 53004 10069 20067

10 A.M. EST
Weather: Overcast stratocumulus
Temperature: 76F, Dew point: 72F, Wind: SSE at 11 kt
Sea-level pressure: 30.16 inches Hg, steady
Visibility: 3 miles with fog
BHO SA 1455 E5 OVC 3F 212/76/72/1511/016/
FEW BRGT SPTS IOVC ALQDS/ 8/4// 58001

1 P.M. EST
Weather: Overcast stratocumulus
Temperature: 78F, Dew point: 72F, Wind: S at 10 kt
Visibility: 6 miles
BHO SA 1755 E15 OVC 6 202/78/72/1810/013/
FEW BINOVC SW HAZY/ 8/4// 58010 10080 20069


WEATHER SUMMARY FOR SATURDAY, JULY 16

TEMPERATURE (DEGREES F)
MAX.....86   NORMAL.....82    ASOS.....86 AT 2:10 P.M.
MIN.....66   NORMAL.....62    ASOS.....66 AT 4:56 A.M.
MEAN....76   NORMAL.....72
DEPARTURE FROM 30-YEAR NORMAL......+4
TOTAL DEPARTURE FOR THE MONTH.....-31 (-1.9 DEGREES/DAY)


PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.........25 S AT 4:42 P.M.
                   AEROVANE..........28 S AT 4:39 P.M.
                   ASOS..............25 S AT 4:42 P.M.
FASTEST MILE FOR YESTERDAY...........21 S AT 4:17 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE........20 S AT 4:17 P.M.
AVERAGE WIND SPEED AND DIRECTION....8.6 S
                   ASOS.............9.6


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..........2.56   DEPARTURE....+0.62
                         ASOS..............2.57
TOTAL PRECIPITATION FOR THE YEAR..........33.37   DEPARTURE....+5.91
                         ASOS.............32.25*
*EXCLUDES 3.19 INCHES OF ERRONEOUS PRECIPITATION RECORDED FROM 1/23-1/28.


PRELIMINARY CLIMATE SUMMARY FOR JULY 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

7/1   75/60/68/-2/0.02/110/12     20 SSW (MPH)
7/2   80/62/71/+1/0/776/85        24 W
7/3   77/59/68/-2/0/885/97        18 ENE
7/4   81/58/70/0/0/701/77         22 SSE
7/5   86/60/73/+2/0/783/86        27 S
7/6   71/57/64/-7/1.43/000/00     35 NNE  Aero 38 MPH NNE
7/7   62/56/59/-12/T/000/00       30 NE
7/8   59/53/56/-15/.../000/00     39 NNE
7/9   76/54/65/-6/.../335/37      35 W
7/10  86/62/74/+3/0/787/77        32 WNW
7/11  88/66/77/+5/0/822/91        30 NW
7/12  76/60/68/-4/0/849/94           21 NE
7/13  77/59/68/-4/0/649/72        27 S
7/14  84/64/74/+2/0/.../..        27 SW
7/15  82/67/75/+3/0/.../..        21 NE
7/16  86/66/76/+4/0/.../..        25 S

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

RECORDS FOR JULY 17
HIGH   96F IN 1999
LOW    47F IN 1892
PRECIP 1.39 INCHES IN 1989
WIND   46 MPH WNW IN 1971

RECORDS FOR JULY 18
HIGH   96F IN 1991,1999
LOW    54F IN 1892,1956
PRECIP 1.65 INCHES IN 2000
WIND   43e MPH SW IN 1949

TODAY'S REPORT BY: Andrew Hoell