BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JULY 20, 2008    
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED 
 

Today's observations:
 
8 A.M. EDT
Weather: Overcast altocumulus, haze
Temperature: 75F, Dew point: 70F,  Wind: SSW at 6 kt
Sea-level pressure: 29.96 inches Hg, rising
Visibility: 3 miles
6-hourly minimum temperature: 72F    
24-hourly rainfall: Trace
BHO SA 1155 150 OVC 3 146/75/70/2106/996/
FEW BINOVC HAZY WND LGT/ 8/03/ 51007 70000 10075 20072
 
11 A.M. EDT
Weather: Overcast altocumulus
Temperature: 83F, Dew point: 71F,  Wind: S at 9 kt
Sea-level pressure: 29.95 inches Hg, falling
Visibility: 7 miles
BHO SA 1455 150 OVC 7 143/83/71/1909/995/ HAZY/ 8/07/ 58003
 

WEATHER SUMMARY FOR SATURDAY, JULY 19
 
TEMPERATURE (DEGREES F)
MAX.....93    NORMAL.....82
MIN.....66    NORMAL.....63
MEAN....80    NORMAL.....72
 
DEPARTURE FROM 30-YEAR NORMAL.............+8
TOTAL DEPARTURE FOR THE MONTH............+64 [+3.2 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............35 WSW AT 6:43 P.M. 
                   AEROVANE.............35 WSW AT 6:40 P.M. 
                   ASOS.................35 W   AT 6:43 P.M.
                   DAVIS................33 SSW AT 3:37 P.M. 
FASTEST MILE FOR YESTERDAY..............24 WSW AT 6:41 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...........23 W   AT 6:47 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE..........25 SSW AT 4:07 P.M.
                   AVERAGE............10.9 SW
                   ASOS...............10.4
                   DAVIS..............11.9 SW [214 deg] 
* Last of several occurrences.
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE   DEPARTURE......-0.12 
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.79   DEPARTURE......-0.51 
                         ASOS..............1.82  
TOTAL PRECIPITATION FOR THE YEAR..........26.79   DEPARTURE......-1.18   
                         ASOS.............29.20 #
# Includes erroneous ASOS precipitation data on 2/13/08.
 
PRELIMINARY CLIMATE SUMMARY FOR JULY 2008 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
7/1  83/66/75/+5/0.15/411/45     28 SSW   TSTM
7/2  84/61/73/+3/1.02/593/65     44 W     TSTM Small hail
7/3  85/63/74/+4/T/793/87        45 SW    Aero 44 MPH SW
7/4  69/59/64/-6/0.22/018/02     25 NE
7/5  70/62/66/-5/0.01/000/00     17 E
7/6  81/65/73/+2/0/245/27        20 S
7/7  86/67/77/+6/0/563/62        21 S
7/8  89/69/79/+8/0/753/83        30 SSE 
7/9  88/70/79/+8/T/734/81        36 SSW  TSTM Aero 35 MPH SSW
7/10 82/65/74/+3/T/887/98        28 W    Aero 29 MPH W
7/11 83/61/72/0/0/759/84         17 NW  
7/12 82/65/74/+2/0/631/70        28 S 
7/13 81/66/74/+2/0/784/87        38 S    Aero 40 MPH S 
7/14 80/67/74/+2/0.36/468/52     23 W    TSTM
7/15 87/67/77/+5/0/799/89        22 SSW
7/16 88/66/77/+5/0/.../..        22 SSE
7/17 86/68/77/+5/0/.../..        20 SW  
7/18 91/66/79/+7/0.03/.../..     23 SE   TSTM
7/19 93/66/80/+8/0/.../..        35 WSW  Aero 35 WSW
 
NEW DAILY RECORDS FOR JULY
None to date...      
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JULY 20
HIGH 99F IN 1991
LOW 47F IN 1890
PRE 1.64 INCHES IN 1938
WIND 56e MPH SSW IN 1943
 
RECORDS FOR JULY 21
HIGH 100F IN 1977 [RECORD FOR MONTH]
LOW 48F IN 1890
PRECIP 2.09 INCHES IN 1938
PEAK GUST 60e MPH WNW IN 1977

TODAY'S REPORT PREPARED By: Andrew Hoell