BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JULY 16, 2008     
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED 
 
ANOTHER SUNNY VERY WARM AND DRY DAY
 
Today's visibility was up to 60 to 70 miles with less 
haze than yesterday and even slightly drier air; the 
dew points falling to the mid 50's as temperatures 
rose into the mid to upper 80's once again, about
where they were yesterday.  
 
Today's observations:
 
8 A.M. EDT
Weather: Clear, few cirrus distant NNW-N smoke layer along the
horizon below shallow inversion N-NE  
Temperature: 74F, Dew point: 57F,  Wind: NNE at 3 kts (estimated)  
Sea-level pressure: 30.19 inches Hg, rising
Visibility: 60 miles, 70 NW, 30 NE-SE
6-hourly minimum temperature: 66F     
24-hourly rainfall: 0.00 in.
BHO SA 1155 CLR 60 220/74/57/E0302/019/ FEW CI DSNT NNW-N K LYR ALG 
HRZN N-NE BLO SHLW INVSN VSBY W-NW 70 NE-SE 30/ 8/001 51009 10074 
20066
 
11 A.M. EDT
Weather: Clear, few small cumulus forming SE-S  
Temperature: 81F, Dew point: 55F,  Wind: SSW at 7 kts 
Sea-level pressure: 30.19 inches Hg, steady
Visibility: 60 miles, 70 NW   
BHO SA 1455 CLR 60 222/81/55/2107/019/ FEW CU FRMG SE-S VSBY NW 70/ 
8/100 55000  
 
2 P.M. EDT
Weather: Clear, few cumulus E-SW, few cirrus distant WNW-NW  
Temperature: 86F, Dew point: 54F,  Wind: SSW at 6 kts,
Sea-level pressure: 30.16 inches Hg, falling
Visibility: 60 miles, 70 NW 
6-hourly max. temp. 86F  
BHO SA 1755 CLR 60 213/86/54/2006/016/ FEW CUFRA/CU E-SW 
FEW CI DSNT WNW-NW VSBY NW 70/ 8/101 58009 10086 20074 
 
WEATHER SUMMARY FOR TUESDAY, JULY 15
 
TEMPERATURE (DEGREES F)
MAX.....87    NORMAL.....82
MIN.....67    NORMAL.....62
MEAN....77    NORMAL.....72
 
DEPARTURE FROM 30-YEAR NORMAL.............+5 
TOTAL DEPARTURE FOR THE MONTH............+39 [+2.4 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............22 SSW AT  3:38 P.M. *    
                   AEROVANE.............22 SSW AT  3:38 P.M.       
                   ASOS.................22 S   AT  3:39 P.M.      
                   DAVIS................25 S   AT  3:38 P.M.  
FASTEST MILE FOR YESTERDAY..............15 SSW AT 12:54 P.M. * 
MAXIMUM 2-MINUTE ASOS AVERAGE...........16 S   AT  3:39 P.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE..........18 SSW AT  3:39 P.M.      
                   AVERAGE............ 8.5 SSW  
                   ASOS................8.3    
                   DAVIS...............8.6 SW [220 deg] 
* last of several occurrences....
 
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..........1.76   DEPARTURE......-0.06  
                         ASOS..............1.79   
TOTAL PRECIPITATION FOR THE YEAR..........26.76   DEPARTURE......-0.73    
                         ASOS.............29.17 #
# 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 morning low temp. 66F; our normal low now 62F
 
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 16
HIGH 94F IN 1968, 1980, 1983, 1999
LOW 50F IN 1889, 1903
PRECIP 0.89 INS IN 1919
WIND 48e MPH SW 1944
 
RECORDS FOR JULY 17
HIGH 96F IN 1999
LOW 47F IN 1892
PRECIP 1.39 INS IN 1989
WIND 46 MPH WNW IN 1971
 
TODAY'S REPORT PREPARED By: Robert Skilling