Wednesday, August 10, 2016

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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, AUGUST 10, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME

TEMPERATURES DROP TODAY WITH AFTERNOON FOG AND RAIN

Skies were mostly cloudy, but had become overcast by the 10:00AM observation,
remaining that way through the afternoon. Light rain began shortly before
9:00AM EST totaling 0.27 inches by 1:00PM. Fog also blanketed the area leaving
visibility at only 2-3 miles. While humidity was high, temperatures only rose
to 75F with dew points in the upper 60s.

Today’s Observations:

7 A.M.
Weather: Scattered altocumulus, broken altocumulus, broken altostratus
Temperature: 73F; Dew Point: 66F; Wind: S at 12 kts
Sea-level pressure: 30.21 ins. Hg, rising, then falling
Visibility: 30 miles
6-hr Max temp: 73F
6-hr Min temp: 66F
24-hr precip: 0.00 in.
BHO SA 1155 69 SCT E79 BKN 110 BKN 30 229/73/66/1912/021/
VSBY WSW-NNW 20/ 8/090 56001 10073 20066

10 A.M.
Weather: Light drizzle, overcast nimbostratus, few stratus fractus W
Temperature: 70F; Dew Point: 69F; Wind: S at 13G20 kts
Sea-level pressure: 30.20 ins. Hg, falling
Visibility: 2 miles, except 3 miles W, fog
BHO SA 1455 E36 OVC 2L-F 227/70/69/1713G20/020/ FEW STFRA W
VSBY WNW 3/ 8/6// 57002 MANUAL 6010/ ASOS 60010

1 P.M.
Weather: Light rain, broken stratus, overcast cumulus
Temperature: 71F; Dew Point: 69F; Wind: S at 13G20 kts
Sea-level pressure: 30.15 ins. Hg, falling, then more quickly
Visibility: 3 miles, fog
6-hr Max temp: 75F
6-hr Min temp: 69F
6-hr precip: 0.27 in.
BHO SA 1755 6 BKN 35 OVC 3R-F 211/71/69/1713G20/015/ 8/6// 58016
MANUAL 6027/ ASOS 60027 10075 20069

SUMMARY FOR TUESDAY, AUGUST 9, 2016

TEMPERATURE (DEGREES F)
MAX…..90   NORMAL…..80
MIN…..65   NORMAL…..63
MEAN….78   NORMAL…..72

DEPARTURE FROM 30-YEAR NORMAL…………………….+6
TOTAL DEPARTURE FOR THE MONTH……………………+16 [+1.6 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..13   DEPARTURE……….+6
TOTAL COOLING UNITS FOR THE MONTH…………..79   DEPARTURE………+15
TOTAL COOLING UNITS FOR THE SEASON…………553   DEPARTURE……..+138
TOTAL COOLING UNITS LAST SEASON TO DATE…….464   DIFFERENCE……..+89

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….25 SSW AT  4:54 P.M.
AEROVANE………………..24 SSW AT  4:54 P.M.
ASOS……………………24 WSW AT  4:55 P.M.
DAVIS…………………..24 SSW AT  4:54 P.M. RMY 25
FASTEST MILE FOR YESTERDAY…………………17 SSW AT  4:54 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………20 WSW AT  4:56 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..19 S   AT  4:56 P.M.
AVERAGE WIND SPEED AND DIRECTION………….10.4 S
ASOS………………….10.6
DAVIS………………….9.3 SW [230 Deg.] * Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……-0.14
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.14  DEPARTURE……-1.18
ASOS…………..0.12
TOTAL PRECIPITATION FOR THE YEAR……….23.33  DEPARTURE……-8.98
ASOS………….23.63

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/…/..                 21 NE  AERO 20 ENE RMY 20
8/2  71/63/67/-5/0.12/…/..                 16 ENE AERO 16 ENE RMY 16
8/3  81/60/71/-1/0.00/…/..                 18 S   AERO 16 S   RMY 17
8/4  86/61/74/+2/0.00/…/..                 23 S   AERO 22 S   RMY 17
8/5  87/61/74/+2/0.00/…/..                 29 S   AERO 29 S   RMY 30
8/6  88/67/78/+6/T/…/..                    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 Low temp since midnight is 66F; normal low is now 63F

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

RECORDS FOR AUGUST 10
HIGH 101F IN 1949 [STATION RECORD MAXIMUM – Tied with 8/2/1975] LOW 49F IN 1964
PRE 2.27 INS IN 1952
PEAK GUST 88e MPH S IN 1976

RECORDS FOR AUGUST 11
HIGH 97F IN 1944
LOW 49F IN 1972
PRECIP 3.13 INCHES IN 1990
PEAK GUST 44 MPH SW IN 1971

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