BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, JUNE 23, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
COOL AND DRY TODAY WITH PLEASANT CONDITIONS
 
Once again, temperatures during the day were 
far below normal beginning with a morning low of 50 
degrees and early afternoon high of only 68. Winds have 
prevailed from the west to west-northwest with peak 
wind gust reaching 32 to 35 MPH.

Today's observations:
 
7 A.M.   
Weather: Clear, Few cirrus in the distance
Temperature: 57F, Dew point: 46F, Wind: NW at 17G24 kts 
Sea-level pressure: 29.81 inches Hg, increasing
Visibility: 70 miles 
6-hour min temp. 50F   
24-hour precip: 0.06 in. 
BHO SA 1155 CLR 70 096/57/46/3117G24/981/ 
FEW CI NW-NE/ 8/001 51011 70006 10057 20050 
        
10 A.M. 
Weather: Broken stratocumulus 
Temperature: 64F, Dew point: 44F, Wind: WNW at 15G20 kt 
Sea-level pressure: 29.81 inches Hg, steady
Visibility: 70 miles  
BHO SA 1455 40 BKN 70 095/64/44/2915G20/981/ 
FEW CI DSNT NE PK WND 2828/1435/ 8/501 50001
 
1 P.M.
Weather: Broken stratocumulus
Temperature: 68F, Dew Point: 42F, Wind: WNW at 15G20 kts
Sea-level pressure: 29.81 inches Hg, steady 
Visibility: 70 miles
BHO SA 1755 65 BKN 70 096/68/2915G20/981/ 
FEW CI DSNT NE/ 8/501 57003 10068 20057

 
WEATHER SUMMARY FOR FRIDAY, JUNE 22
 
TEMPERATURE (DEGREES F)
MAX.....71    NORMAL.....77 
MIN.....54    NORMAL.....58
MEAN....63    NORMAL.....67
DEPARTURE FROM 30-YEAR NORMAL............-4
TOTAL DEPARTURE FOR THE MONTH............-10 (-0.5 DEGREES/DAY)
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............2  DEPARTURE......... 0
TOTAL HEATING UNITS FOR THE MONTH...........73  DEPARTURE........+ 7   
TOTAL HEATING UNITS FOR THE SEASON........5904  DEPARTURE.......-459
TOTAL HEATING UNITS LAST SEASON TO DATE...5790  DIFFERENCE......+114
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............37 NW AT 3:40 P.M.    
                   AEROVANE.............37 NW AT 3:40 P.M.  
                   ASOS.................N/A  #
                   DAVIS................36 NNW   AT 3:39 P.M.       
FASTEST MILE FOR YESTERDAY..............27 NW   AT 3:40 P.M.      
MAXIMUM 2-MINUTE ASOS AVERAGE...........N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE..........27 NW   AT 3:40 P.M.         
AVERAGE WIND SPEED AND DIRECTION........14.9 WNW  
                   ASOS.................N/A  #
                   DAVIS................15.0 W [282 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....0.06  DEPARTURE.....-0.07
                         ASOS..............0.04  
TOTAL PRECIPITATION FOR THE MONTH..........2.64  DEPARTURE.....-0.26 
                         ASOS..............2.60    
TOTAL PRECIPITATION FOR THE YEAR..........26.80  DEPARTURE.....+2.16 
                         ASOS.............26.24   
 
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/+10/0.12/660/73       45 NNW  Aero 44 MPH TSTM AM/PM
6/2  87/64/76/+14/0.01/290/32       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/+5/0.01/455/50        38 S   
6/6  70/49/60/-3/0/637/70           35 W   
6/7  69/44/57/-7/0/528/58           23 W
6/8  78/58/68/+4/0/748/82           20 WSW
6/9  63/54/59/-5/0.02/000/00        18 ENE
6/10 70/50/60/-4/0/831/91           22 ENE 
6/11 77/62/70/+5/0.04/594/65        29 NE    
6/12 70/56/63/-2/0.09/192/21        29 NNE
6/13 56/50/53/-12/0.01/000/00       42 NNE   Aero 40 MPH NNE 
6/14 59/49/54/-11/0/036/04          34 NNE   
6/15 69/46/58/-8/0/769/84           21 NNE
6/16 80/55/68/+2/0/577/63           25 SW   
6/17 85/58/72/+6/T/632/69           31 W   
6/18 79/60/70/+4/0/880/96           23 NW
6/19 84/62/73/+6/0/578/63           25 SSW
6/20 74/60/67/0/0.38/000/00         25 W
6/21 77/56/67/0/0.23/823/90         30 WSW
6/22 71/54/63/-4/0.06/.../..        37 NW   TSTM 1:15-1:30 P.M.
 
6/23 morning low temp. 50 deg; normal low 58 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 23
HIGH 93F IN 1888
LOW 45F IN 1885
PRECIP 0.70 INCHES IN 2006
PEAK GUST 63 MPH SE IN 1972 (AGNES)
 
RECORDS FOR JUNE 24
HIGH 91F IN 1914,1976
LOW 40F IN 1932
PRECIP 2.80 INCHES IN 1929
PEAK GUST 46 MPH S IN 1985
 
TODAY'S REPORT PREPARED By: Andy Hoell and Eli Melaas