BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, JULY 22, 2007   
ALL TIMES ARE IN EASTERN STANDARD TIME
 
 
Today's observations:
 
7 A.M.   
Weather: Thin overcast cirrus
Temperature: 67F, Dew point: 54F, Wind: NNW at 10 kt 
Sea-level pressure: 30.16 inches Hg, rising
Visibility: 70 miles
6-hour min temp: 61F    
BHO SA 1155 200 SCT 300 –OVC 70 215/67/54/3310/016/ 
FEW AC ALQDS/ 8/051 51017 10067 20061
 

10 A.M.   
Weather: Broken cirrus, few stratocumulus
Temperature: 74F, Dew point: 52F, Wind: NE at 12G18 kt 
Sea-level pressure: 30.20 inches Hg, rising
Visibility: 70 miles
BHO SA 1455 200 BKN 70 228/74/52/0312G18/020/ FEW SC FRMG DSNT W-NW/ 8/503 51013
 
WEATHER SUMMARY FOR SATURDAY, JULY 21
 
TEMPERATURE (DEGREES F)
MAX.....77    NORMAL.....82 
MIN.....58    NORMAL.....63
MEAN....68    NORMAL.....72
DEPARTURE FROM 30-YEAR NORMAL.......-4
TOTAL DEPARTURE FOR THE MONTH.......-3  (0.0 DEGREES/DAY)
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............23 WNW AT 12:47 A.M.      
                   AEROVANE...............23 WNW AT 12:52 A.M.     
                   ASOS...................N/A  #
                   DAVIS..................24 WNW AT 12:52 A.M.          
FASTEST MILE FOR YESTERDAY................16 WNW AT 12:48 A.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE.............N/A  # 
MAXIMUM 2-MINUTE DAVIS AVERAGE............17 WNW AT  7:06 A.M.           
AVERAGE WIND SPEED AND DIRECTION.........7.5 WNW  
                   ASOS...................N/A  #
                   DAVIS.................7.9 WNW [308 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.....-0.12
                         ASOS..............0.00 
TOTAL PRECIPITATION FOR THE MONTH..........1.40  DEPARTURE.....-1.14 
                         ASOS..............1.30    
TOTAL PRECIPITATION FOR THE YEAR..........28.38  DEPARTURE.....+0.17
                   ASOS FOR YEAR..........27.71     
 
PRELIMINARY CLIMATE SUMMARY FOR JULY 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
 
7/1  70/52/61/-9/0.02/649/71/28 W      
7/2  73/50/62/-8/0/841/92/   29 WNW 
7/3  75/53/64/-6/0/839/92/   23 NW 
7/4  78/58/68/-2/0.09/465/51/45 SSE 
7/5  80/61/71/ 0/0.25/383/42/38 SSE TSTM   
7/6  83/62/73/+2/0.01/482/53/46 WNW TSTM  
7/7  81/60/71/0/0/509/56/    32 WSW   
7/8  90/62/76/+5/0.41/563/62/36 NW Aero 33 MPH TSTM 
7/9  86/61/74/+3/0.20/354/39 27 NNE TSTM
7/10 80/62/71/0/0/680/75     27 S 
7/11 84/70/77/+5/T/371/41    32 S
7/12 81/64/73/+1/.01/813/90  27 WNW
7/13 84/62/73/+1/0/695/77    36 WSW
7/14 82/62/72/0/T/765/85     33 SSE
7/15 87/65/76/+4/T/638/71    44 S  Aero 45 MPH S, Davis 48 MPH S     
7/16 84/65/75/+3/0/449/50    18 WNW 
7/17 85/65/75/+3/0/.../..    18 WNW
7/18 71/66/69/-3/0.21/000/00 23 SE   
7/19 83/65/74/+2/0.20/.../.. 31 S   
7/20 82/61/72/0/0/.../..     29 WSW
7/21 77/58/68/-4/0/.../..    23 WNW 
 
NEW DAILY RECORDS FOR JULY 2007:  
 
None to date
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JULY 22
HIGH 99F IN 1926
LOW 52F IN 1890
PRECIP 1.73 INCHES IN 1900 
PEAK GUST 55 MPH IN 1983
 
RECORDS FOR JULY 23
HIGH 99F IN 1952
LOW 51F IN 1923,1977
PRECIP 1.82 INCHES IN 1953
PEAK GUST 54e MPH S IN 1946
 
TODAY'S REPORT PREPARED By: Andrew Hoell