BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, OCTOBER 14, 2016  
ALL TIMES ARE IN EASTERN STANDARD TIME

CHILLY TEMPS AFTER COLD FRONT,
ONLY TRACE OF PRECIP. YESTERDAY EVENING

Only a trace of precip. from last evening's passing cold front was
measured this morning.  Temperatures steadily decreased from yesterday's
high of 71F to an overnight low of 41F just before this morning's 7:00AM
EST observation.  Chilly temperatures have remained in place today.

Increasing pressure has given us clear skies which will help cool
overnight temperatures.  A freeze warning has been issued for tonight for
parts of Eastern Massachusetts.

The large amount of rain from the past weekend has helped to lessen
the drought rating for southeast Massachusetts from 'extreme' to
'severe'; however, a large portion of the state, including BHO, is still
in an extreme drought.


7 A.M. 
Weather: Few stratocumulus NNE-SW
Temperature: 43F; Dew Point: 33F; Wind: NNW at 11G18 kts
Sea-level pressure: 30.28 ins. Hg, rising, then more quickly
Visibility: 70 miles
6-hr Max temp: 50F
6-hr Min temp: 41F
24-hr precip: 0.00 in.
BHO SA 1155 CLR 70 253/43/33/3311G18/028/ FEW SC NNE-SW/
8/500 51031 10050 20041

10 A.M.
Weather: Few stratocumulus and cumulus NE-SSW
Temperature: 51F; Dew Point: 31F; Wind: NNW at 7 kts
Sea-level pressure: 30.33 ins. Hg, rising, then less quickly
Visibility: 70 miles
BHO SA 1455 CLR 70 270/51/31/3407/033/ FEW SC AND CU NE-SSW/ 
8/800 51017

1 P.M.
Weather: Few cumulus ENE-SW
Temperature: 56F; Dew Point: 31F; Wind: NW at 6 kts
Sea-level pressure: 30.31 ins. Hg, rising then falling
Visibility: 70 miles
6-hr Max. temp: 56F
6-hr Min. temp: 43F
HO SA 1755 CLR 70 263/56/31/3206/031/ FEW CU ENE-SW/
8/100 58007 10056 20043


SUMMARY FOR THURSDAY, OCTOBER 13, 2016
 
TEMPERATURE (DEGREES F)
MAX.....71   NORMAL.....62
MIN.....52   NORMAL.....44
MEAN....62   NORMAL.....53

DEPARTURE FROM 30-YEAR NORMAL........................+9
TOTAL DEPARTURE FOR THE MONTH.......................+24 [+1.6 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY...............0   DEPARTURE...........0
TOTAL COOLING UNITS FOR THE MONTH...............0   DEPARTURE..........-4
TOTAL COOLING UNITS FOR THE SEASON............894   DEPARTURE........+293
TOTAL COOLING UNITS LAST SEASON TO DATE.......810   DIFFERENCE........+84 

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............3   DEPARTURE.........-10
TOTAL HEATING UNITS FOR THE MONTH.............108   DEPARTURE.........-30
TOTAL HEATING UNITS FOR THE SEASON............183   DEPARTURE.........-97
TOTAL HEATING UNITS LAST SEASON TO DATE.......169   DIFFERENCE........+14

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................24 SSW AT 11:58 A.M.* 
                   ASOS........................26 SSW AT 11:59 A.M.  
                   DAVIS.......................24 S   AT 11:58 A.M. RMY 28 
FASTEST MILE FOR YESTERDAY.....................18 SSW AT 11:08 A.M.     
MAXIMUM 2-MINUTE ASOS AVERAGE..................18 SSW AT 11:11 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE.................18 SSW AT 11:10 A.M.   
AVERAGE WIND SPEED AND DIRECTION.............11.0 S
                   ASOS......................10.8
                   DAVIS......................9.9 SSW [210 Deg.]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...TRACE  DEPARTURE......-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........3.30  DEPARTURE......+1.37
                         ASOS..............3.31
TOTAL PRECIPITATION FOR THE YEAR..........30.62  DEPARTURE.....-10.39
                         ASOS.............30.95 
 

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
M:    Missing data

10/1  57/52/55/-2/1.22/000/00                 33 NNE AERO  M  RMY 34
10/2  55/52/54/-3/0.19/.../..                 23 N   AERO  M  RMY N/A
10/3  69/53/61/+5/0.00/.../..                 21 ENE AERO  M  RMY 20
10/4  61/47/54/-2/T/.../..                    26 NE  AERO  M  RMY 27
10/5  61/44/53/-3/0.00/.../..                 22 NE  AERO  M  RMY 21
10/6  71/46/59/+4/0.00/.../..                 16 SW* AERO  M  RMY 15
10/7  75/54/65/+10/0.00/.../..                16 S   AERO  M  RMY 16
10/8  69/53/61/+7/0.00/.../..                 23 SSW AERO  M  RMY 23
10/9  63/44/54/0/1.89/.../..                  28 N   AERO  M  RMY 34
10/10 57/40/49/-5/0.00/.../..                 32 NW  AERO  M  RMY 32
10/11 62/39/51/-2/0.00/.../..                 17 N   AERO  M  RMY N/A
10/12 68/49/59/+6/0.00/.../..                 17 S   AERO  M  RMY 17
10/13 71/52/62/+9/T/.../..                    24 SSW AERO  M  RMY 28

10/14 Low temp since midnight is 41F; normal low is now 43F

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated): 

RECORDS FOR OCTOBER 14
HIGH 79F IN 2000
LOW 28F IN 1958
PRECIP 2.69 INCHES IN 1990
SNOWFALL 2.0 INCHES IN 1913
PEAK GUST 63e W IN 1976

RECORDS FOR OCTOBER 15
HIGH 83F IN 1897
LOW 29F IN 1887,1937
PRECIP 4.58 INCHES IN 2005
SNOWFALL TRACE IN 1961,1972
PEAK GUST 69 MPH W IN 2003

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle