Saturday, August 16, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, AUGUST 16, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

BEAUTIFUL MID-AUGUST WEATHER WITH FILTERED SUNSHINE
LOW HUMIDITY AND COOL TEMPERATURES….

The sky has been partly cloudy all day with the sun
shining through very high cirrus fibratus and
cirrostratus. A few low cumulus have formed as of
early afternoon.  The high temperature has only
reached the middle 70s as of the 1 PM EST observation
with a dew point in the low 50s.  Visibility has been
very good today reaching 75 miles this afternoon.
The wind from the WSW-SW has been a little stronger
than yesterday with a peak gust to 24 mph at
12:32 PM EST.

Today’s Observations:

7 A.M.
Weather: Scattered dense cirrus, thin broken cirrus
fibratus
Temperature: 60F; Dew Point: 52F; Wind: WSW at 10 kts
Sea-level pressure: 29.99 ins. Hg, rising
Visibility: 60 miles, light distant haze
6-hr max temp: 60F
6-hr min temp: 56F
24-hr precip: 0.00 inches
BHO SA 1155 200 SCT 250 -BKN 60 156/60/52/2410/999/
LGT DSNT HZ/ 8/001 53011 10060 20056

10 A.M.
Weather: Scattered dense cirrus, thin overcast cirrus
fibratus, few cumulus all quadrants
Temperature: 70F; Dew Point: 53F; Wind: SW at 10 kts,
Sea-level pressure: 30.01 ins. Hg, rising
Visibility: 70 miles, light distant haze
3-hr precip: 0.00 inches
BHO SA 1455 220 SCT 250 -OVC 70 162/70/53/2210/001/ FEW
CU ALQDS LGT DSNT HZ/ 8/101 51006

1 P.M.
Weather: Scattered cumulus, broken cirrus and cirrostratus,
overcast cirrus, thin spots in overcast all quadrants
Temperature: 74F; Dew Point: 52F; Wind: SW at 10G18 kts
Sea-level pressure: 29.97 ins. Hg, falling
Visibility: 75 mile
6-hr max. temp: 75F
6-hr min. temp: 60F
6-hr precip: 0.00 inches
BHO SA 1755 55 SCT 220 BKN 300 OVC 75 150/74/52/2310G18/997/
THN SPTS IOVC ALQDS/ 8/108 58012 10075 20060

WEATHER SUMMARY FOR FRIDAY, AUGUST 15, 2014

TEMPERATURE (DEGREES F)
MAX…..74    NORMAL…..80
MIN…..56    NORMAL…..62
MEAN….65    NORMAL…..71

DEPARTURE FROM 30-YEAR NORMAL…………………….-6
TOTAL DEPARTURE FOR THE MONTH……………………-21 [-1.6 DEGREES/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0   DEPARTURE………..-6
TOTAL COOLING UNITS FOR THE MONTH………….79   DEPARTURE……….-24
TOTAL COOLING UNITS FOR THE SEASON………..416   DEPARTURE……….-38
TOTAL COOLING UNITS LAST SEASON TO DATE……546   DIFFERENCE……..-130

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………23  W   AT  1:27 P.M.
ASOS…………………..27  W   AT  1:27 P.M.
DAVIS………………….21  W   AT  1:26 P.M. RMY 23
FASTEST MILE FOR YESTERDAY………………..27  W   AT  1:01 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..18  W   AT  1:02 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….15  W   AT  1:02 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..9.6 W
ASOS…………………..9.0
DAVIS………………….7.6 W  [259 deg.] * last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00  DEPARTURE……….-0.13
ASOS…………..0.00
TOTAL PRECIPITATION FOR AUGUST………….1.37  DEPARTURE……….-0.73
ASOS…………..1.35
TOTAL PRECIPITATION FOR THE YEAR……….31.00  DEPARTURE……….-2.09
ASOS……………N/A

PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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

8/1  86/63/75/+3/0.00/598/69              25 S   RMY 29
8/2  68/59/64/-8/…./009/01              21 ESE RMY 22
8/3  71/60/66/-6/…./104/12              12 SE  RMY 12
8/4  83/64/74/+2/0.00/550/64              20 S   RMY 21
8/5  87/66/77/+5/0.00/798/93              17 S   RMY 19
8/6  79/64/72/0/0.06/…/..               23 WNW RMY 25
8/7  79/58/69/-3/T/…/..                 22 NW  RMY 24 TSTM
8/8  82/55/69/-3/0.00/…/..              20 WNW RMY 20
8/9  82/60/71/-1/0.00/…/..              16 WNW RMY 17
8/10 84/63/74/+3/0.00/…/..              15 W   RMY N/A
8/11 85/63/74/+3/0.00/…/..              25 S   RMY 29
8/12 81/64/73/+2/0.00/…/..              25 SSE RMY N/A
8/13 69/61/65/-6/1.09/000/00              35 ESE RMY 37
8/14 73/57/65/-6/0.00/…/..              27 W   RMY 29
8/15 74/56/65/-6/0.09/…/..              23 W   RMY 23

8/16  morning low of 56F; the normal low is now 62F

DAILY RECORDS FOR AUGUST 2014:
None so far.

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

RECORDS FOR AUGUST 16
HIGH 95F IN 1944
LOW 50F IN 1927
PRECIP 1.47 INCHES IN 1926
PEAK GUST 45e MPH N IN 1951

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

TODAY’S REPORT PREPARED BY: Mike Iacono