BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, OCTOBER 8, 2007 COLUMBUS DAY HOLIDAY    
ALL TIMES ARE IN EASTERN STANDARD TIME
 
NEARER NORMAL OCTOBER TEMPERATURE ARRIVED ON SUNDAY
AFTER THREE DAYS OF RECORD EARLY OCTOBER HEAT 
FIRST SIGNIFICANT RAINFALL SINCE SEPTEMBER 11TH
 
After a very early morning high temperature of 71 degrees 
Sunday morning, the daytime high was only 58 degrees after
the wind had veered to northeast during the morning with gusts
up near 30 MPH. The frontal passage and accompanying wind 
shift put an end to three consecutive days of record high 
temperatures from 4-6 October. Maximum readings of 84, 86
and 83 degrees were all at record levels with the latter
equaling the record for 6 October.  
 
Rain showers, moderate to heavy at times early this morning,
brought the most significant rainfall since September 11th. 
Only a little over one third of an inch of rainfall had been 
recorded during the 26-day period until 0.48 inch fell in just
a couple hours this morning. A total of 0.50 inch was recorded
through 2 p.m. EDT. 
 
Today's observations:
 
7 A.M.   
Weather: Obscurement with fog and light rain showers 
Rain ended 10 past and began 50 past the hour  
Temperature: 55F, Dew point: 55F, Wind: S at 11 kts 
Sea-level pressure: 29.93 inches Hg, rising
Visibility: 1/16 of a mile    
6-hour min temp: 52F
6-hour precip: 0.37 inch 
24-hour precipitation: 0.38 inch  
BHO SA 1155 W2 X 1/16RW-F 136/55/55/1811/993/ RE10B50/ 
8//// 58014 ASOS 60036 MANUAL 6037/ ASOS 70037
MANUAL 70038 10055 20052
 
10 A.M.   
Weather: Obscurement with fog
Temperature: 57F, Dew point: 57F, Wind: NNW at 07 kts
Wind: Gradual windshift past hour  
Sea-level pressure: 30.08 inches Hg, rising
Visibility: 0 mile  
3-hour precip: 0.11 inch 
BHO SA 1455 W1 X 0F 127/57/57/3407/991/ WND GRDLY VEERING RB05E10/
8//// 58009 ASOS 60013 MANUAL 6011/
 
1 P.M.   
Weather: Obscurement with fog
Temperature: 55F, Dew point: 55F, Wind: NNW at 05 kts
Sea-level pressure: 29.86 inches Hg, falling
Visibility: 0 mile  
BHO SA 1755 W1 X 0F 111/55/55/3305/986/ REUKN 8//// 
56016 ASOS 60014 MANUAL 6013/ 10058 20055  
  
WEATHER SUMMARY FOR SUNDAY, OCTOBER 07
 
TEMPERATURE (DEGREES F)
MAX.....71    NORMAL.....64 
MIN.....52    NORMAL.....46
MEAN....62    NORMAL.....55
DEPARTURE FROM 30-YEAR NORMAL.........+ 7 
TOTAL DEPARTURE FOR THE MONTH.........+80 [+11.2 DEGREES/DAY]  

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............29  NNE  AT   7:49 A.M.       
                   AEROVANE.............. 28  NNE  AT   7:06 A.M.       
                   ASOS...................28  NNE  AT   7:49 A.M.      
                   DAVIS..................27  NNE  AT   7:05 A.M.       
FASTEST MILE FOR YESTERDAY................20  NNE  AT   7:50 A.M.            
MAXIMUM 2-MINUTE ASOS AVERAGE.............20  NNE  AT   7:49 A.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE............21  NNE  AT   7:49 A.M. 
AVERAGE WIND SPEED AND DIRECTION..........9.1 NNE 
                   ASOS...................8.7   
                   DAVIS..................8.9 N [360 deg]  

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.37  DEPARTURE.....+0.23
                         ASOS..............0.36 
TOTAL PRECIPITATION FOR THE MONTH..........0.37  DEPARTURE.....-0.61  
                         ASOS..............0.37    
TOTAL PRECIPITATION FOR THE YEAR..........33.25  DEPARTURE.....-5.33
                         ASOS.............32.48    
 
PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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
 
10/1 67/49/58/+1/0/592/84     18 S 
10/2 72/50/61/+5/0/.../..     20 SSE
10/3 73/61/67/+11/0/.../..    23 SSE
10/4 84/65/75/+19/0/.../..    21 SSW
10/5 86/61/74/+19/0/.../..    21 SSW 
10/6 83/62/73/+18/0/.../..    23 WSW
10/7 71/52/61/+7/0.01/.../..  29 NNE
 
10/8 morning low temp. 52F; the normal low is now 45F  
     morning rainfall through 7 a.m. 0.37 inch 
 
NEW DAILY RECORDS FOR OCTOBER 2007:
 
10/4 - RECORD HIGH TEMPERATURE 84F; PREVIOUS 83F IN 1898 and 1959.
     - EQUALED RECORD HIGH MINIMUM TEMPERATURE OF 65F; ALSO IN 1927. 
10/5 - RECORD HIGH TEMPERATURE 86F; PREVIOUS 85F IN 1922
10/6 - EQUALED RECORD HIGH TEMPERATURE 83F; ALSO IN 1990.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR OCTOBER 8
HIGH 81 IN 1916,1990
LOW 28 IN 1919
PRECIP 2.31 INCHES IN 1891
SNOWFALL TRACE IN 1988, 2001 (EARLIEST DATE)
PEAK GUST 60 MPH NE IN 1996
 
RECORDS FOR OCTOBER 9
HIGH 81 IN 1909
LOW 29 IN 1907,1937
PRECIP 2.54 INCHES IN 1976
SNOWFALL 0.2 INCHES IN 1888
PEAK GUST 81e MPH S IN 1976 (RECORD FOR MONTH)
 
TODAY'S REPORT PREPARED By: Robert Skilling