BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JULY 2, 2008    
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED 
 
THE JULY 2008 STATISTICS....
Temps. Degrees F
Av. Max. 78.0
Av. Min. 59.5 
Mean     68.8 [+3.1]
24-hour corr. mean 67.8 
Max. temp: 98, 10th
Min. temp: 51, 5th,6th 
Heating units: 41 [-33]
Cooling units: 163 [+70] 
Total precip: 2.34 ins. [-1.59] 
Greatest in 24 hours: 0.55 in. [16th] 
Prevailing wind: S 17% (UNCORR. 10.1 mph, corr. 10.6 mph)
Peak gust: 55 MPH W 10th
Thunderstorm days: 9 
Sunshine data: 14338 mins. or 52% of possible 
Av. vapor pressure: 17.1 mbs. 
 
Today's observations:
 
8 A.M. EDT
Weather: High thin overcast cirrus 
Temperature: 69F, Dew point: 66F,  Wind: SW @ 05 kts
Sea-level pressure: 29.99 inches Hg, rising 
Visibility: 4 miles in thin fog   
6-hourly minimum temperature: 65F     
24-hourly rainfall: 0.15 inch  
BHO SA 1155 220 SCT 250 –OVC 4F 155/69/66/2205/999/ 
SML PTCH AC E/ 8/031 53009 MANUAL 70015 ASOS 70014 
10069 20065
 
11 A.M. EDT
Weather: Scattered cumulus, building cumulus, few towering cumulus north, 
moderate cumulus all parts of the sky, thin broken cirrus and a few 
cirrocumulus 
Temperature: 78F, Dew point: 65F,  Wind: S at 08 kts 
Wind: variability in direction SSE-WSW 
Sea-level pressure: 29.98 inches Hg, falling
Visibility: 10 miles, hazy
BHO SA 1455 40 SCT 220 SCT 250 –BKN 10 152/78/65/1808/998/ 
BLDG CU FEW TCU N MDT ALQDS FEW CC HAZY WND 15V24/ 
8/201 58003
 
2 P.M. EDT
Weather: Broken cumulus, cumulonimbus, cirrus, 
thunder began 02 ended 17 past the hour moved NE
Temperature: 78F, Dew point: 63F,  Wind: W at 06 kts,
Sea-level pressure: 29.96 inches Hg, falling
Visibility: 20 miles, light haze, N 10 in rain shower 
6-hourly max. temp. 84F
6-hourly rainfall: 0.00 inch
BHO SA 1755 E50 BKN 200 BKN 20 145/78/63/2606/996/
CBS N AND SW MOVG NE TB02E17 MOVD NE RW10 N OVR CTY VIRGA/RW SW-WSW 
TCU NE-S-OVHD VSBY N 10/ 8/903 58007 10084 20069 
 
WEATHER SUMMARY FOR TUESDAY, JULY 1
 
TEMPERATURE (DEGREES F)
MAX.....83    NORMAL.....79
MIN.....66    NORMAL.....60
MEAN....75    NORMAL.....70
 
DEPARTURE FROM 30-YEAR NORMAL.............+5  
TOTAL DEPARTURE FOR THE MONTH............+ 5
 
HEATING DEGREE DAYS...WILL RESUME SEPTEMBER 1ST...
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............28 SSW  AT 11:15 A.M.        
                   AEROVANE.............26 SSW  AT 11:15 A.M.       
                   ASOS.................29 SSW  AT 11:15 A.M.            
                   DAVIS................31 SSW  AT 11:15 A.M.        
FASTEST MILE FOR YESTERDAY..............23 SSW  AT 11:16 A.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE...........21 SSW  AT 11:17 A.M.           
MAXIMUM 2-MINUTE DAVIS AVERAGE..........26 SSW  AT 11:16 A.M.            
                   AVERAGE.............8.4 S 
                   ASOS................8.2      
                   DAVIS.............. 8.0 S [190] 
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.15   DEPARTURE......+0.02  
                         ASOS..............0.14
TOTAL PRECIPITATION FOR THE MONTH..........0.15   DEPARTURE......+0.02  
                         ASOS..............2.34   
TOTAL PRECIPITATION FOR THE YEAR..........25.15   DEPARTURE......-0.65  
                         ASOS.............27.53 #
# Includes erroneous ASOS precipitation data on 2/13/08.
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
  
6/1  79/58/69/+7/0/833/92        32 W  
6/2  76/53/65/+3/0/834/92        28 WNW
6/3  84/58/71/+9/0/707/78        28 S 
6/4  66/54/60/-3/0.53/000/00     25 SSW   Aero 23 MPH SSW
6/5  55/51/53/-10/0.11/000/00    31 N     Aero 28 MPH N
6/6  59/51/55/-8/0.13/000/00     21 SSE
6/7  91/55/73/+9/0.07/575/63     45 SW    Aero 46 MPH SW TSTM  
6/8  91/72/82/+18/0/703/77       31 WSW 
6/9  94/71/83/+19/0/794/87       29 W 
6/10 98/72/85/+21/0/876/97       58 W     Aero 58 MPH W
6/11 85/68/77/+12/0/804/88       28 W     Aero 26 MPH W
6/12 78/60/69/+4/0/888/97        28 NW    Aero 26 MPH NW
6/13 82/55/69/+4/0/888/97        21 NW
6/14 78/62/70/+5/0.08/687/75     21 NW    TSTM 
6/15 63/54/59/-7/0.42/000/00     20 E     
6/16 63/56/60/-6/0.55/000/00     25 SSE   TSTM  
6/17 77/57/67/+1/0/587/64        25 S     TSTM 
6/18 71/52/62/-4/0.01/642/70     27 S
6/19 75/56/66/-1/0/752/82        23 S     Aero 20 MPH S
6/20 78/57/68/+1/0.20/459/50     27 W     TSTM
6/21 81/59/70/+3/0/826/90        25 SSE
6/22 80/61/71/+4/0.01/266/29     38 S     Aero 37 MPH S 
6/23 76/65/71/+3/0.02/009/01     23 S     TSTM
6/24 77/58/68/0/0.15/248/27      40 WNW   Aero 39 MPH WNW TSTM
6/25 81/58/70/+2/0/724/79        25 W     Aero 24 MPH SW
6/26 79/62/71/+3/0.02/202/22     31 S     Aero 30 MPH S
6/27 85/64/75/+6/0.02/247/27     39 NW    Aero 40 MPH NW TSTM
6/28 71/59/65/-4/0/000/00        22 NE
6/29 82/60/71/+2/T/275/30        31 S     Aero 32 MPH S TSTM
6/30 85/68/77/+8/0.02/512/56     28 S 
 
7/1  83/66/75/+5/0.15/.../..     28 SSW   TSTM
 
7/2  morning low temp. 65F; our normal low is now 60F
 
NEW DAILY RECORDS FOR JUNE TO DATE....
 
6/8 -  MINIMUM TEMPERATURE OF 72F EQUALED 
       RECORD HIGH MINIMUM SET IN 1999.  
6/9 -  MAXIMUM TEMPERATURE OF 94F IS NEW RECORD FOR
       THE DATE, PREVIOUS RECORD 92F IN 1984
6/10 - MAXIMUM TEMPERATURE OF 98F IS NEW RECORD FOR
       THE DATE, PREVIOUS RECORD 92F IN 1967,1974,1984
       MINIMUM TEMPERATURE OF 72F IS NEW RECORD HIGH 
       MINIMUM FOR DATE, PREVIOUS RECORD WAS 71F IN 1984
6/11 - MINIMUM TEMPERATURE OF 68F EQUALED
       RECORD HIGH MINIMUM SET IN 1973, 1984.
        
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JULY 2
HIGH 95F IN 1963
LOW 47F IN 1988
PRECIP 1.42 INS IN 1986
PEAK GUST 45 MPH SW IN 1999
 
RECORDS FOR JULY 3
HIGH 99F IN 1911
LOW 47F IN 1914
PRECIP 1.36 IN 1985
PEAK GUST 52 MPH NW IN 1963
 
TODAY'S REPORT PREPARED By: Robert Skilling