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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, OCTOBER 29, 2015  
ALL TIMES ARE IN EASTERN STANDARD TIME

HEAVY RAIN AND STRONG WINDS OVERNIGHT BRING
1.58 INCHES OF NEW RAIN AND 60 MPH GUSTS

Light rain showers that began yesterday afternoon
slowly picked up in intensity through the evening, with
0.65 inches recorded by midnight on the ASOS system. 
Winds picked up in intensity during the evening and
early morning hours as well, with winds hitting a peak
of 60 MPH according to three different anemometers, and
53 MPH twice on the official station anemometer. Winds
were sustained at times near 40 MPH during the evening
bringing down wet leaves and small branches throughout
the Blue Hills.  

Temperatures climbed through the evening as well, hitting
yesterday's maximum temperature of 64F at midnight. 
Temperatures were still climbing this morning as rain showers
and fog came to an end. By the 1:00 PM EST observation
sunshine was plentiful under gusty WSW winds. A maximum 
temperature of 72F had been reached, just 2 degrees below
today's daily record.
 
Today's Observations:

7 A.M.
Weather: Light rain shower, intermittent fog
Temperature: 65F; Dew Point: 65F; Wind: SSW at 15G20 kts,
Peak Wind: 27 knots S @ 5:56 AM EST
Sea-level pressure: 29.54 ins. Hg, falling, then more slowly
Visibility: 1 mile, obscured by light rain showers and fog
6-hr Max temp: 68F 
6-hr Min temp: 65F
24-hr precip: 1.58 in. 
BHO SA 1155 W4 X 1RW-F 002/65/65/2015G20/954/ FG INTMT 
PK WND 1927/1056/ 8//// 56013 ASOS 60091 70164 MANUAL 70158 
10068 20065

10 A.M.
Weather: Broken stratocumulus, broken altocumulus lenticularis,
broken cirrostratus
Temperature: 67F; Dew Point 63F; Wind: SSW at 13G20 kts
Peak Wind: 25 knots SSW @ 9:19 AM EST
Sea-level pressure: 29.55 ins. Hg, falling, then rising and higher
Visibility: 50 miles, thin fog in all directions
3-hr precip: Trace
BHO SA 1455 E13 BKN 70 BKN 200 BKN 50 008/67/63/2213G20/955/ 
THN FG ALQDS PK WND 2025/19/ 8/548 53006 MANUAL 6000/

1 P.M. 
Weather: Thin broken cirrus, few stratocumulus/cumulus
in all directions, few altocumulus lenticularis distant ESE-SE
Temperature: 71F; Dew Point 53F; Wind: WSW @ 20G29 kts
Peak Wind: 31 knots SW @ 12:39 PM EST
Sea-level pressure: 29.49 ins. Hg, falling, then more quickly 
Visibility: 70 miles, except 30 miles W-NNW
6-hr max temp: 72F
6-hr min temp: 65F
6-hr precip: Trace 
BHO SA 1755 E250 -BKN 70 985/71/53/2420G29/949/ 
VSBY W-NNW 30 MI FEW SC/CU ALQDS FEW ACSL DSNT ESE-SE 
PK WND 2231/39/ 8/842 58023 MANUAL 6000/ 10072 20065


SUMMARY FOR WEDNESDAY, OCTOBER 28, 2015 
  
TEMPERATURE (DEGREES F)
MAX.....64   NORMAL.....56
MIN.....44   NORMAL.....39 
MEAN....54   NORMAL.....48 
 
DEPARTURE FROM 30-YEAR NORMAL.......................+6
TOTAL DEPARTURE FOR THE MONTH......................-10  [-0.5 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..........-5
TOTAL COOLING UNITS FOR THE SEASON............810   DEPARTURE........+208
TOTAL COOLING UNITS LAST SEASON TO DATE.......595   DIFFERENCE.......+215

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............11   DEPARTURE..........-6
TOTAL HEATING UNITS FOR THE MONTH.............370   DEPARTURE..........+3
TOTAL HEATING UNITS FOR THE SEASON............413   DEPARTURE.........-96
TOTAL HEATING UNITS LAST SEASON TO DATE.......385   DIFFERENCE........+28
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY...................53  SSE AT  9:37 P.M.   
                   ASOS........................53  SSE AT  9:39 P.M.     
                   DAVIS.......................52  S   AT  9:39 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................38  SSE AT  9:47 P.M.*    
MAXIMUM 2-MINUTE ASOS AVERAGE..................36  SSE AT 10:48 P.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE.................37  SSE AT  9:13 P.M.      
AVERAGE WIND SPEED AND DIRECTION...............19.3 SE 
                   ASOS........................17.9    
                   DAVIS...................... 16.4 SE [138 Deg.] 

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....1.58  DEPARTURE.....+1.42
                         ASOS...............1.64
TOTAL PRECIPITATION FOR THE MONTH...........2.69  DEPARTURE.....-1.53
                         ASOS...............2.73
TOTAL PRECIPITATION FOR THE YEAR...........36.83  DEPARTURE.....-6.47  
                         ASOS................N/A ***
*** ASOS annual total not available due to erroneous readings

PRELIMINARY CLIMATE SUMMARY FOR OCTOBER 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

10/1  55/51/53/-4/..../000/00               39 NE  RMY N/A
10/2  51/47/49/-8/..../000/00               40 NE  RMY 43 
10/3  51/45/48/-8/..../000/00               38 NE  RMY N/A 
10/4  55/49/52/-4/0.00/474/68               35 E   RMY 40
10/5  59/46/53/-3/T/125/18                  21 NE  RMY 20 
10/6  68/43/56/+1/0.00/663/96               17 NW  RMY 17
10/7  69/46/58/+3/0.00/640/93               20 W   RMY 20
10/8  63/49/56/+2/0.00/678/99               21 S   RMY N/A
10/9  68/50/59/+5/0.27/130/19               45 S   RMY 49
10/10 59/44/53/-2/0.00/673/99               33 NNW RMY N/A 
10/11 67/46/57/+4/0.00/582/86               26 SW  RMY 28
10/12 76/50/63/+10/0.00/647/96              22 SSW RMY 24
10/13 70/55/63/+10/0.27/208/31              23 S   RMY 24
10/14 66/46/56/+4/0.00/428/64               26 W   RMY 29
10/15 60/41/51/-1/0.00/659/99               20 SW  RMY 27
10/16 60/44/52/+1/T/471/71                  31 W   RMY 34
10/17 54/35/45/-6/T/482/73                  30 WNW RMY 33
10/18 45/28/37/-14/0.00/480/73              24 NNW RMY 25
10/19 47/26/37/-13/0.00/648/99              25 SSW RMY 30  
10/20 65/43/54/+4/0.00/.../..               28 SW  RMY 28
10/21 59/51/55/+5/0.01/.../..               18 SSE RMY 21  
10/22 71/51/61/+12/T/.../..                 31 W   RMY 34
10/23 55/34/45/-4/0.00/.../..               31 NNW RMY 34
10/24 46/33/40/-9/0.00/.../..               15 SSE RMY N/A   
10/25 59/44/52/+3/0.04/.../..               29 N   RMY 31
10/26 53/38/46/-2/0.00/.../..               23 NNW RMY 20
10/27 56/35/46/-2/0.00/.../..               15 SE  RMY N/A
10/28 64/44/54/+6/..../.../..               53 SSE RMY N/A

10/29 low since midnight is 64F; normal low is now 39F  

DAILY RECORDS FOR OCTOBER 2015

-NONE SO FAR.

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

RECORDS FOR OCTOBER 29
HIGH 74F IN 1989
LOW 23F IN 1891
PRECIP 2.42 INCHES IN 2012
SNOWFALL 4.0 INCHES IN 2011
PEAK GUST 76 E IN 2012

RECORDS FOR OCTOBER 30
HIGH 75F IN 1946,1989
LOW 21F IN 1928
PRECIP 1.85 INCHES IN 1917
SNOWFALL 2.0 INCHES IN 2011
PEAK GUST 66 NW IN 1963

TODAY'S REPORT PREPARED BY: Brian Fitzgerald