Tuesday, August 20, 2013
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 20, 2013
ALL TIMES ARE IN EASTERN STANDARD TIME
TEMPERATURE REACHES MID 80S;
WARMEST DAY SINCE JULY 24 AND ONLY SECOND ABOVE AVERAGE DAY THIS MONTH
Temperatures are finally warming up! The high temperature has reached 84F
through 2 PM EDT, making today the warmest since 84F on July 24. More
warm weather appears to be in the forecast over the next couple of days.
From July 25 – August 19 (26 days), only 2 days had above normal
temperatures, and the average daily temperature during this time period
was 2.7F below normal.
Winds continue to be on the light side, as they have been over the past
several days. The wind direction has slowly shifted from a NW direction
early this morning to a SW direction this afternoon.
Today’s Observations:
7 A.M.
Weather: Clear, hazy, thin smoke layer along horizon and aloft distant
all quadrants
Temperature: 67F; Dew Point: 61F; Wind: NW at 8 kts.
Sea-level pressure: 30.07 ins. Hg, rising
Visibility: 35 miles, WNW 45 miles, hazy
24-hr precip: Trace
6-hr min. temp: 64F
BHO SA 1155 CLR 35 183/67/61/3108/007/ SKC HAZY THN K LYR ALG HRZN AND
ALF DSNT ALQDS VSBY WNW 45/ 8/000 53017 MANUAL 7000/ 10067 20064
10 A.M.
Weather: Clear, hazy, thin smoke layer along horizon and aloft distant
all quadrants
Temperature: 79F; Dew Point: 64F; Wind: W at 4 kts,
Wind: Light and variable
Sea-level pressure: 30.10 ins. Hg, rising
Visibility: 35 miles, hazy
BHO SA 1455 CLR 35 192/79/64/2704/010/ SKC HAZY THN K LYR ALG HRZN AND
ALF DSNT ALQDS WND LGT AND VRB/ 8/000 53009
1 P.M.
Weather: Clear, few small cumulus/cumulus fractus NNW-E-S and in the
vicinity of the station, few cirrus distant NNW, mostly clear sky SSW-NW,
hazy, thin smoke layer along horizon and aloft distant all quadrants
Temperature: 84F; Dew Point: 61F; Wind: WSW at 6 kts,
Wind: Direction variable SSW-WNW
Sea-level pressure: 30.08 ins. Hg, falling
Visibility: 45 miles, hazy
6-hr max. temp: 84F
BHO SA 1755 CLR 45 186/84/61/2506/008/ FEW SML CU/CUFRA NNW-E-S AND VCTY
STN FEW CI DSNT NNW MSTLY CLR SKY SSW-NW HAZY THN K LYR ALG HRZN AND ALF
DSNT ALQDS WND 20V30/ 8/101 58006 10084 20067
WEATHER SUMMARY FOR MONDAY, AUGUST 19, 2013
TEMPERATURE (DEGREES F)
MAX…..82 NORMAL…..79
MIN…..58 NORMAL…..62
MEAN….70 NORMAL…..70
DEPARTURE FROM 30-YEAR NORMAL……………………0
TOTAL DEPARTURE FOR THE MONTH………………….-45 [-2.6 DEGREES/DAY]
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY………….5 DEPARTURE………-1
TOTAL COOLING UNITS FOR THE MONTH…………79 DEPARTURE……..-48
TOTAL COOLING UNITS FOR THE SEASON……….562 DEPARTURE……..+84
TOTAL COOLING UNITS LAST SEASON TO DATE…..633 DIFFERENCE…….-71
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY…………….17 W AT 9:32 P.M. *
AERO…………………18 W AT 3:49 P.M.
ASOS…………………20 W AT 5:19 P.M.
DAVIS………………..19 WSW AT 5:18 P.M. RMY 20
FASTEST MILE FOR YESTERDAY………………15 W AT 5:44 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………15 W AT 5:46 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………..14 W AT 5:45 P.M.
AVERAGE WIND SPEED AND DIRECTION……….10.4 W
ASOS……………….10.2
DAVIS……………….9.4 W [263]
* last of several occurrences…
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M…Trace DEPARTURE…………-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….2.55 DEPARTURE…………-0.07
ASOS…………..2.60
TOTAL PRECIPITATION FOR THE YEAR……….37.84 DEPARTURE…………+4.23
ASOS…………..N/A*
*ASOS malfunctioned during storm on 2/8-9, leading to erroneous totals
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 2013 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY: RMY = R.M. Young wind gust recording system added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
8/1 81/62/72/0/0.01/503/58 25 S AERO 26 MPH S RMY 27
8/2 81/62/72/0/0.23/518/60 26 W AERO 26 MPH W RMY 28
8/3 77/63/70/-2/T/276/32 22 WSW AERO 23 MPH WSW RMY 23
8/4 79/58/69/-3/T/645/75 25 WNW AERO 21 MPH WNW RMY 26
8/5 75/54/65/-7/0.00/858/100 26 WNW AERO 25 MPH WNW RMY 27
8/6 78/56/67/-5/0.00/846/99 17 ESE AERO 15 MPH S RMY 16
8/7 80/59/70/-2/0.00/759/89 21 S AERO 21 MPH S RMY N/A
8/8 79/62/71/-1/0.08/153/18 25 S AERO 25 MPH S RMY N/A
8/9 73/70/72/0/2.21/000/00 37 S AERO 39 MPH S RMY 40
8/10 81/61/71/-1/0.00/795/94 30 WNW AERO 31 MPH WNW RMY 31
8/11 78/58/68/-3/0.00/835/99 18 W AERO 18 MPH W RMY 21
8/12 81/62/72/+1/0.00/656/78 18 W AERO 17 MPH WSW RMY 19
8/13 73/64/69/-2/0.02/193/23 16 SSE AERO 15 MPH SSE RMY N/A
8/14 73/57/65/-6/0.00/819/98 35 W AERO 35 MPH W RMY 35
8/15 75/53/64/-7/0.00/808/97 23 W AERO 23 MPH W RMY 24
8/16 77/57/67/-4/0.00/740/89 20 W AERO 19 MPH W RMY 21
8/17 77/59/68/-3/0.00/770/93 18 W AERO 18 MPH W RMY N/A
8/18 80/62/71/0/T/231/28 16 SSW AERO 17 MPH SSW RMY 18
8/19 82/58/70/0/T/…/.. 17 W AERO 18 MPH W RMY 20
8/20 morning low temp: 64F; the normal low is now 62F
DAILY RECORDS FOR AUGUST 2013
None so far.
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR AUGUST 20
HIGH 93F IN 1937
LOW 48F IN 1896, 1905, 1949
PRECIP 2.71 INCHES IN 1970
PEAK GUST 47 MPH W IN 1983
RECORDS FOR AUGUST 21
HIGH 92F IN 1937, 1995
LOW 47F IN 1982
PRECIP 2.84 INCHES IN 1888
PEAK GUST 54 MPH WSW IN 2004
TODAY’S REPORT PREPARED BY: Sean Fankhauser
