BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 7, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
A GENERALLY SUNNY AND COOL, DRY EARLY JUNE DAY 
 
Considerable high cloudiness is dimming the sunshine today
and the air is pleasantly cool and dry for early June with 
high temperatures reaching near 70 degrees and dewpoints 
down in the 40's.  
  
Today's observations:
 
7 A.M.   
Weather: Clear, few cirrus WSW-NNE 
Temperature: 54F, Dew point: 43F, Wind: W at 07 kts 
Sea-level pressure: 30.09 inches Hg, rising  
Visibility: 50 miles    
6-hour min temp. 44F   
BHO SA 1155 CLR 50 188/54/43/2707/009/ CI DSNT WSW-NNE 
FEW CC N-NNE/ 8/001 51018 10054 20044 
     
10 A.M. 
Weather: High thin overcast cirrus clouds with breaks  
Temperature: 62F, Dew point: 43F, Wind: W at 09 kts
Wind: variability is SW-NW
Sea-level pressure: 30.10 inches Hg, rising
Visibility: 60 miles     
BHO SA 1455 250 –BKN 300 –OVC 60 192/62/43/2709/010/ FEW CUFRA/
SML CU OCNL FRMG BINOVC FEW LWR CI CLR SKY DSNT N-E WND 22V32/
8/001 51004 
 
1 P.M. 
Weather: Broken dense high cirrus clouds and overcast thin cirrus 
Temperature: 65F, Dew point: 41F, Wind: W at 11 kts
Wind: Gust to 20 kts past hour, variability is WSW-WNW
Sea-level pressure: 30.08 inches Hg, falling
Visibility: 60 miles   
6-hourly max. temp. 68 deg.  
BHO SA 1755 E200 BKN 250 OVC 60 185/65/41/2711/008/ DENSE CI 
ALQDS OVC PTLY THN BINOVC WND 24V30/ 8/002 56007 10068 20054 
 
WEATHER SUMMARY FOR WEDNESDAY, JUNE 6 
 
TEMPERATURE (DEGREES F)
MAX.....70    NORMAL.....73 
MIN.....49    NORMAL.....53
MEAN....60    NORMAL.....63
DEPARTURE FROM 30-YEAR NORMAL..........- 3
TOTAL DEPARTURE FOR THE MONTH..........+17 (+2.6 DEGREES/DAY)
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............5  DEPARTURE.........+1
TOTAL HEATING UNITS FOR THE MONTH...........19  DEPARTURE.........-7  
TOTAL HEATING UNITS FOR THE SEASON........5850  DEPARTURE.......-473
TOTAL HEATING UNITS LAST SEASON TO DATE...5745  DIFFERENCE......+105 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............35  W  AT 5:30 P.M.   
                   AEROVANE.............33  W  AT 5:30 P.M.     
                   ASOS.................N/A  #    
                   DAVIS................33  W  AT 5:29 P.M.    
FASTEST MILE FOR YESTERDAY..............25  W  AT 5:30 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE...........N/A  #       
MAXIMUM 2-MINUTE DAVIS AVERAGE..........25  W  AT 5:30 P.M.   
AVERAGE WIND SPEED AND DIRECTION.......12.8 W   
                   ASOS.................N/A  #   
                   DAVIS...............13.5 W [280 deg]
# ASOS WINDS SWITCHED OFF BY NWS 6/6, IT IS NOT KNOWN WHEN 
  THAT DATA WILL RESUME
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.13
                         ASOS..............0.00  
TOTAL PRECIPITATION FOR THE MONTH..........1.81  DEPARTURE.....+1.03 
                         ASOS..............1.83    
TOTAL PRECIPITATION FOR THE YEAR..........25.97  DEPARTURE.....+3.45
                         ASOS.............25.47    
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2007......CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
6/1  87/56/72/+10/0.12/.../..       45 NNW  Aero 44 MPH TSTM AM/PM
6/2  87/64/76/+14/0.01/.../..       23 SSE  TSTM PM    
6/3  68/50/59/-3/0.14/000/000       24 NNE  TSTM AM (no rain)
6/4  63/50/57/-6/1.52/000/00        35 NE   TSTM 10:15-10:50 A.M. 
6/5  78/57/68/+5/0.01/.../..        38 S   
6/6  70/49/60/-3/0/.../..           35 W  
 
6/7  morning low temp. 44 deg; normal now 54 deg.
 
      NEW DAILY RECORDS FOR JUNE: 
 
6/4 - NEW RECORD DAILY RAINFALL OF 1.52 INS; THE PREVIOUS 
      RECORD WAS 1.29 INS. IN 1898.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 7
HIGH 93F IN 1999
LOW 40F IN 1932
PRECIP 4.01 INS IN 2006
PEAK GUST 58 MPH NE IN 1982
 
RECORDS FOR JUNE 8
HIGH 94F IN 1984
LOW 37F IN 1932
PRECIP 1.53 INS IN 1947
PEAK GUST 86e MPH WNW IN 1946 [Record for month]
 
TODAY'S REPORT PREPARED By: Robert Skilling