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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 17, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME

INCREASED WINDS FROM WEST AND DECREASING HUMIDITY

Winds were stronger today than they have been in previous weeks. The peak gust 
so far today was 33 kts (38 MPH), which occurred shortly after 7:30AM EST. 
Temperatures warmed to 84F and dew points steadily decreased as winds pushed drier 
air into the area. The overnight low of 75F is potentially a record minimum high 
for today if temperatures do not cool below it by midnight.

Today's Observations:

7 A.M. 
Weather: Scattered stratocumulus, broken altocumulus,
scattered cirrus
Temperature: 78F; Dew Point: 70F; Wind: W at 16G25 kts,
Peak Wind: 26 kts (30 MPH) W at 6:51AM EST
Sea-level pressure: 29.85 ins. Hg, falling, then rising
Visibility: 70 miles
6-hr Max temp: 78F 
6-hr Min temp: 77F
24-hr precip: 0.02 in.
BHO SA 1155 25 SCT E180 BKN 250 SCT 70 109/78/70/2616G26/985/ 
PK WND 2626/51/ 8/481 51004 MANUAL 70002 ASOS 70002 10078 20077

10 A.M.
Weather: Broken stratocumulus, scattered altocumulus, 
scattered cirrus
Temperature: 82F; Dew Point: 63F; Wind: WNW at 13G26 kts,
Peak Wind: 31 kts (36 MPH) W at 9:08AM EST
Sea-level pressure: 29.89 ins. Hg, steady, then rising
Visibility: 80 miles
BHO SA 1455 E34 BKN 230 SCT 300 SCT 80 123/82/63/2913G26/989/ PK WND 2831/08/ 
8/532 53014

1 P.M.
Weather: Scattered altocumulus, scattered cirrus, few cumulus in all directions
Temperature: 84F; Dew Point: 60F; Wind: W at 14G21 kts,
Peak Wind: 26 kts (30 MPH) WNW at 12:13PM EST
Sea-level pressure: 29.87 ins. Hg, falling, then falling more quickly
Visibility: 80 miles    
6-hr Max temp: 84F 
6-hr Min temp: 77F
BHO SA 1755 140 SCT 330 SCT 80 116/84/60/2814G21/987/ FEW CU ALQDS PK WND 
3026/13/ 8/184 53007 10084 20077

SUMMARY FOR TUESDAY, AUGUST 16, 2016 
 
TEMPERATURE (DEGREES F)
MAX.....83   NORMAL.....79
MIN.....69   NORMAL.....62 
MEAN....76   NORMAL.....71

DEPARTURE FROM 30-YEAR NORMAL........................+5
TOTAL DEPARTURE FOR THE MONTH.......................+67 [+4.0 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............11   DEPARTURE..........+5
TOTAL COOLING UNITS FOR THE MONTH.............172   DEPARTURE.........+63
TOTAL COOLING UNITS FOR THE SEASON............646   DEPARTURE........+186
TOTAL COOLING UNITS LAST SEASON TO DATE.......524   DIFFERENCE.......+122   

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................31 S   AT 11:06 P.M.  
                   AEROVANE....................30 S   AT 11:07 P.M.      
                   ASOS........................33 S   AT 11:06 P.M.  
                   DAVIS.......................32 S   AT 11:05 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY.....................26 S   AT 11:06 P.M.*  
MAXIMUM 2-MINUTE ASOS AVERAGE..................26 SSW AT 11:06 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE.................25 S   AT 11:06 P.M.   
AVERAGE WIND SPEED AND DIRECTION.............10.0 S
                   ASOS......................10.5
                   DAVIS......................9.2 S [175 Deg.]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M... 0.02  DEPARTURE......-0.11
                         ASOS..............0.02
TOTAL PRECIPITATION FOR THE MONTH..........0.99  DEPARTURE......-1.24
                         ASOS..............0.97
TOTAL PRECIPITATION FOR THE YEAR..........24.18  DEPARTURE......-9.04
                         ASOS.............24.48
 

PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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

8/1  75/65/70/-2/0.02/320/37                 21 NE  AERO 20 ENE RMY 20
8/2  71/63/67/-5/0.12/000/00                 16 ENE AERO 16 ENE RMY 16
8/3  81/60/71/-1/0.00/603/70                 18 S   AERO 16 S   RMY 17
8/4  86/61/74/+2/0.00/833/97                 23 S   AERO 22 S   RMY 17 
8/5  87/61/74/+2/0.00/823/96                 29 S   AERO 29 S   RMY 30 
8/6  88/67/78/+6/T/419/49                    24 SSW AERO 23 SSW RMY 23   
8/7  89/65/77/+5/0.00/.../..                 26 WNW AERO 25 WNW RMY 26
8/8  87/63/75/+3/0.00/.../..                 23 W   AERO 21 W   RMY 22
8/9  90/65/78/+6/0.00/.../..                 25 SSW AERO 24 SSW RMY 25
8/10 76/66/71/+0/0.28/.../..                 30 SSW AERO 31 SSW RMY 33
8/11 93/73/83/+12/T/.../..                   22 SSW AERO 21 SSW RMY 22
8/12 95/74/85/+14/0.00/.../..                30 SW  AER0 30 SW  RMY 31 
8/13 77/67/72/+1/0.16/.../..                 25 NNW AERO 36 NNW RMY N/A TSTM
8/14 94/69/82/+11/0.39/.../..                39 SSW AERO 40 SSW RMY N/A TSTM
8/15 89/68/79/+8/0.00/.../..                 25 W   AERO 24 W   RMY 28
8/16 83/69/76/+5/0.02/.../..                 31 S   AERO 30 S   RMY N/A

8/17 Low temp since midnight is 75F; normal low is now 62F

DAILY RECORDS FOR AUGUST 2016
8/11/16: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 73F,
TIES PREVIOUS RECORDS SET IN 1900 AND 1988

8/12/16: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 74F,
TIES PREVIOUS RECORD SET IN 1988

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

RECORDS FOR AUGUST 17
HIGH 97F IN 1944
LOW 48F IN 1902
PRECIP 2.17 INCHES IN 1998
PEAK GUST 50e MPH SSW IN 1952, 50 MPH WNW IN 1962

RECORDS FOR AUGUST 18
HIGH 93F IN 2002
LOW 47F IN 1824
PRECIP 5.75 INCHES IN 1955 [DIANE]
PEAK GUST 46 MPH WNW IN 2007

TODAY'S REPORT PREPARED BY: Cecilia Borries-Strigle and Lizzy Suzedell