BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, JULY 1, 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%
Peak gust: 55 MPH W 10th
Thunderstorm days: 9 
Sunshine data: currently not available 
Av. vapor pressure: 17.1 mbs. 
 
Today's observations:
 
8 A.M. EDT
Weather: Overcast with altocumulus with many breaks 
Temperature: 72F, Dew point: 66F,  Wind: S at 4 kts
Sea-level pressure: 29.86 inches Hg, rising 
Visibility: 6 miles in haze   
6-hourly minimum temperature: 66F     
24-hourly rainfall: 0.02 inch  
BHO SA 1155 E90 OVC 6H 111/72/66/1804/986/ 
NMRS BINOVC CLRG W-N/ 8/030 52017 MANUAL 70002 
ASOS 70001 10072 20066
 
11 A.M. EDT
Weather: Scattered cumulus, moderate and few towering cumulus, 
scattered altocumulus, thin overcast of cirrus with breaks  
Temperature: 80F, Dew point: 68F,  Wind: SSW at 5 kts 
Wind: variability in direction S-WSW 
Sea-level pressure: 29.89 inches Hg, rising
Visibility: 15 miles, hazy
BHO SA 1455 35 SCT 75 SCT 250 –OVC 15 121/80/68/2005/989/ 
CU BLDG MDT CU FEW TCU ALQDS BINOVC HAZY WND LGT/ 8/241 53010 
 
2 P.M. EDT
Weather: Scattered towering cumulus, scattered altocumulus,
scattered cirrus, cumulonimbus distant NE-E moving NE 
Thunder began 10 and ended 35 past the hour
Temperature: 79F, Dew point: 67F,  Wind: SSE at 7 kts,
Wind: variability in direction ESE-S
Sea-level pressure: 29.88 inches Hg, falling
Visibility: 20 miles, light haze 
6-hourly max. temp. 81F
6-hourly rainfall: 0.15 inch
BHO SA 1755 50 SCT 70 SCT 200 SCT 250 SCT 20 117/79/67/1507/988/ 
TB10E35 MOVD NE CB DSNT NE-E MOVG NE TCU ALQDS HAZY WND 12V18/ 8/263 
58004 ASOS 60014 MANUAL 6015/ 10081 20070
 
WEATHER SUMMARY FOR MONDAY, JUNE 30
 
TEMPERATURE (DEGREES F)
MAX.....85    NORMAL.....79
MIN.....68    NORMAL.....60
MEAN....77    NORMAL.....69
 
DEPARTURE FROM 30-YEAR NORMAL.............+8  
TOTAL DEPARTURE FOR THE MONTH............+101 [+3.1 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............0  DEPARTURE........-1
TOTAL HEATING UNITS FOR THE MONTH............41  DEPARTURE.......-33 
TOTAL HEATING UNITS FOR THE SEASON.........5942  DEPARTURE......-429
TOTAL HEATING UNITS LAST SEASON TO DATE....5911  DIFFERENCE......+31
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............28  S  AT 4:23 A.M.        
                   AEROVANE.............27  S  AT 4:23 A.M.      
                   ASOS.................28  S  AT 4:23 A.M.           
                   DAVIS................29 SSW AT 2:31 P.M.       
FASTEST MILE FOR YESTERDAY..............20  S  AT 5:05 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...........20  S  AT 5:06 P.M.          
MAXIMUM 2-MINUTE DAVIS AVERAGE..........24 SSW AT 4:52 P.M.           
                   AVERAGE............12.1  S 
                   ASOS...............11.2     
                   DAVIS..............11.0  S [190 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.02   DEPARTURE......-0.11  
                         ASOS..............0.01
TOTAL PRECIPITATION FOR THE MONTH..........2.34   DEPARTURE......-1.59  
                         ASOS..............2.34   
TOTAL PRECIPITATION FOR THE YEAR..........25.00   DEPARTURE......-0.67  
                         ASOS.............27.39 #
# 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/.../..        31 S     Aero 32 MPH S TSTM
6/30 85/68/77/+8/0.02/.../..     28 S 
 
7/1  morning low temp. 66F; 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 1
HIGH 98F IN 1964
LOW 44F IN 1988 [RECORD FOR MONTH]
PRECIP 4.46 INS IN 1915 [RECORD FOR MONTH]
PEAK GUST 52 MPH WNW IN 1974
 
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
 
TODAY'S REPORT PREPARED By: Robert Skilling