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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, NOVEMBER 20, 2015  
ALL TIMES ARE IN EASTERN STANDARD TIME

HEAVY RAIN COMES TO AN END THIS MORNING AS TEMPS
RISE TO A MAX OF 58F, WINDS GUSTING NEAR 50 MPH

Much needed rain fell in the region overnight, beginning
just before midnight last night. Rain came to an end this
morning at 6:56 AM EST, with a total of 1.18 inches of new
precipitation. This newest rainfall dropped the monthly deficit
to 1.01 inches below normal for the month, and 7.95 inches
for the year.

Winds gusted to an official peak of 44 MPH this morning, just
after 3:00 AM EST, with an unseasonably warm maximum temperature
of 58F recorded near 6:00 AM EST this morning. 

Fog and a low cloud deck has gradually cleared this morning,
and by the 1:00 PM EST observation skies were mostly clear
of clouds with the remains of showers distant offshore to the E. 

 
Today's Observations:

7 A.M.
Weather: Light rain shower, wind shift at 6:42 AM EST, partial for N-SW,
few cumulus fractus in all directions
Temperature: 55F; Dew Point: 55F; Wind: NW at 11G17 kts 
Sea-level pressure: 29.97 ins. Hg, about the same as 3 hrs ago
Visibility: 3 miles, except 50 miles WSW-NW, 8 miles NW-N,
light rain showers and partial fog obscuring visibility
6-hr Max temp: 58F 
6-hr Min temp: 55F
24-hr precip: 1.18 ins. 
BHO SA 1155 W3 X- 3RW-F 149/55/55/3111G17/997/ WSHFT 1142 
VSBY WSW-NW 50 MI NW-N 8 MI FEW CUFRA ALQDS PRTL F N-SW/ 
8/6// 55000 ASOS 60113 70122 MANUAL 70018 10058 20055

10 A.M.
Weather: Scattered thin cirrus, few cumulus/cumulus fractus
in all directions, few cirrostratus distant ENE-SE   
Temperature: 55F; Dew Point 53F; Wind: NW at 10 kts,
Sea-level pressure: 30.02 ins. Hg, rising, then more slowly 
Visibility: 70 miles, except 40 miles ENE-SE, thin fog in all directions 
BHO SA 1455 250 SCT 70 165/55/53/3210/002/ VSBY ENE-SE 40 MI 
FEW CU/CUFRA ALQDS FEW CS DSNT ENE-SE THN FG AQLDS/ 8/701 51016
     
1 P.M. 
Weather: Clear, few cumulus distant E and N, few stratocumulus
distant NE-SSE, few cirrus distant NNE-SSE
Temperature: 57F; Dew Point 42F; Wind: NW at 11 kts 
Sea-level pressure: 30.01 ins. Hg. rising, then falling and lower 
Visibility: 75 miles 
6-hr max. temp. 57F  
6-hr min. temp. 54F  
BHO SA 1755 CLR 75 164/57/42/3211/001/ FEW CU DSNT E AND N 
FEW SC DSNT NE-SSE FEW CI DSNT NNE-SSE/ 8/801 58001 10057 20054 


SUMMARY FOR THURSDAY, NOVEMBER 19, 2015 
  
TEMPERATURE (DEGREES F)
MAX.....55   NORMAL.....49
MIN.....38   NORMAL.....33 
MEAN....47   NORMAL.....41
 
DEPARTURE FROM 30-YEAR NORMAL......................+6
TOTAL DEPARTURE FOR THE MONTH....................+121  [+6.2 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............18   DEPARTURE..........-6
TOTAL HEATING UNITS FOR THE MONTH.............287   DEPARTURE........-120
TOTAL HEATING UNITS FOR THE SEASON............741   DEPARTURE........-229
TOTAL HEATING UNITS LAST SEASON TO DATE.......861   DIFFERENCE.......-120
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................29 SSE AT  11:03 P.M.   
                   ASOS........................30 S   AT  11:56 P.M.          
                   DAVIS.......................30 SE  AT  10:27 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................24 SE  AT  10:27 P.M.   
MAXIMUM 2-MINUTE ASOS AVERAGE..................22 SE  AT  10:29 P.M.           
MAXIMUM 2-MINUTE DAVIS AVERAGE.................22 SSE AT  10:29 P.M.           
AVERAGE WIND SPEED AND DIRECTION...............15.2 SSE 
                   ASOS........................14.1      
                   DAVIS.......................13.6 SSE [153 Deg.] 
* Last of several occurrences 

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....1.18  DEPARTURE.....+1.02
                         ASOS...............1.22
TOTAL PRECIPITATION FOR THE MONTH...........1.98  DEPARTURE.....-1.01
                         ASOS...............2.02
TOTAL PRECIPITATION FOR THE YEAR...........38.81  DEPARTURE.....-7.95  
                         ASOS................N/A ***
*** ASOS annual total not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER CALENDAR DAY DATA
  DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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

11/1  59/45/52/+6/T/.../..                  30 SSW RMY 31  
11/2  62/47/55/+9/0.00/.../..               24 W   RMY N/A
11/3  71/44/58/+12/0.00/.../..              25 W   RMY 25
11/4  66/49/58/+13/0.00/.../..              22 SSW RMY N/A
11/5  72/51/62/+17/0.00/.../..              31 SW  RMY 36  
11/6  71/60/66/+21/0.00/.../..              35 SSW RMY 38
11/7  64/46/55/+10/0.00/.../..              33 WNW RMY 35
11/8  54/39/47/+3/0.00/.../..               26 NW  RMY 30
11/9  59/38/49/+5/0.00/.../..               20 W   RMY 21
11/10 53/45/49/+5/..../000/00               28 NE  RMY N/A
11/11 48/43/46/+3/..../000/00               41 NE  RMY N/A 
11/12 55/42/49/+6/..../000/00               28 S   RMY 30
11/13 57/41/49/+6/..../.../..               40 WSW RMY 47
11/14 45/31/38/-4/0.00/.../..               40 NW  RMY 47  
11/15 51/31/41/-1/0.00/.../..               25 W   RMY 27
11/16 59/36/48/+6/0.00/.../..               25 NNW RMY 29
11/17 45/28/37/-4/0.00/.../..               18 NNE RMY N/A
11/18 50/35/43/+2/0.00/.../..               17 SSE RMY N/A
11/19 55/38/47/+6/..../.../..               29 SSE RMY N/A

11/20 low since midnight is 55F; normal low is now 32F  

DAILY RECORDS FOR NOVEMBER 2015

**11/6 DAILY RECORD MAXIMUM TEMPERATURE OF 71F
       TIES PREVIOUS RECORD OF 71F SET IN 1959
 
**11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F
       BREAKS PREVIOUS RECORD OF 58F SET IN 1938

**11/6 DAILY RECORD HIGH MINIMUM TEMPERATURE OF 60F
       TIES PREVIOUS MONTHLY RECORD OF 60F SET ON 
       11/8/1996

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

RECORDS FOR NOVEMBER 20
HIGH 72 IN 1953
LOW 10 IN 1894
PRECIP 2.78 INS IN 1988
SNOWFALL 3.0 INS IN 1897
PEAK GUST 73e S IN 1950

RECORDS FOR NOVEMBER 21
HIGH 69 IN 1931
LOW 10 IN 1888
PRECIP 2.60 INCHES IN 1950
SNOWFALL 4.0 INS IN 1929
PEAK GUST 69 NW IN 1989

TODAY'S REPORT PREPARED BY: Brian Fitzgerald