Thursday, August 14, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, AUGUST 14, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

STORM TOTAL FOR AUGUST 13 JUST OVER AN INCH
MOST RAIN WAS LIGHT TO BRIEFLY MODERATE WITH
ONE EXCEPTION–A DOWNPOUR LEFT 0.33 IN ONE HOUR
MONTH AND YEAR REMAIN ON DRY SIDE OF NORMAL

While several inches and more of rain fell to the southwest
through northwest of Blue Hill yesterday we finally managed
to get 1.09 inches.
The downpour between noon and 1 P.M. EDT left 0.33 inch in
that one hour.  The rest of the hours from pre-dawn to early
last evening averaged well under one tenth of an inch showing
that there was mostly all light rain with just a few brief
instances of moderate rain.  Cloudburst rainfall set a New York
State record yesterday at Islip, Long Island when 9 inches
fell in just 2 hours, and 13 inches in 6 hours ending at 8 A.M.
EDT yesterday morning. The 13-inch daily total was a new daily
record for the state of New York.
Despite our rain here were remain drier than normal for August
and for the year as well.

Today’s Observations:

7 A.M.
Weather: Clear, SKC, light haze aloft E-SSE
Temperature: 59F; Dew Point: 56F; Wind: W at 10 kts
Sea-level pressure: 29.78 ins. Hg, rising then more slowly
Visibility: 60 miles, light distant haze
6-hr max temp: 60F
6-hr min temp: 57F
24-hr precip: 0.80 inch
BHO SA 1155 CLR 60 083/59/56/2710/978/ SKC THN HZ LYR ALF E-SSE/
51023 MANUAL 70080 ASOS 70082 10069 20057

10 A.M.
Weather: Clear, cumulus fractus, cumulus distant WSW-N-NE, few cumulus fractus
Temperature: 67F; Dew Point: 53F; Wind: W at 11 kts,
Sea-level pressure: 29.80 ins. Hg, rising slightly
Visibility: 70 miles, light distant haze
BHO SA 1455 CLR 70 091/67/53/2611/980/ CUFRA/CU DSNT WSW-N-NE
FEW SML CUFRA/CU FRMG MSTLY DSNT E-SSE THN HZ ALF OVHD-NE-SSW
LGT DSNT HZ/ 8/100 51008

1 P.M.
Weather: Scattered cumulus, except distant NE-SE,  scattered
cirrus
Temperature: 70F; Dew Point: 53F; Wind: WNW at 14 kts
Sea-level pressure: 29.80 ins. Hg, steady
Visibility: 70 miles, light distant haze
6-hr max. temp: 73F
6-hr min. temp: 59F
BHO SA 1755 45 SCT 250 SCT 70 091/70/53/2914/980/ CU XCPT DSNT NE-SE/
LGT DSNT HZ/ 8/100 53000 10073 20059

WEATHER SUMMARY FOR WEDNESDAY, AUGUST 13, 2014

TEMPERATURE (DEGREES F)
MAX…..69    NORMAL…..80
MIN…..61    NORMAL…..62
MEAN….65    NORMAL…..71

DEPARTURE FROM 30-YEAR NORMAL…………………….-6
TOTAL DEPARTURE FOR THE MONTH…………………….-9 [-0.9 DEGREE/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0   DEPARTURE………..-6
TOTAL COOLING UNITS FOR THE MONTH………….79   DEPARTURE……….-12
TOTAL COOLING UNITS FOR THE SEASON………..416   DEPARTURE……….-26
TOTAL COOLING UNITS LAST SEASON TO DATE……546   DIFFERENCE……..-130

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………35  ESE  AT 11:47 A.M.
ASOS…………………..37  ESE  AT 11:47 A.M.
DAVIS………………….36  E    AT 12:00 NOON RMY 37
FASTEST MILE FOR YESTERDAY………………..26  ESE  AT  1:04 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..25  ESE  AT 12:39 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….26  ESE  AT  1:02 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..16.9 SE
ASOS…………………..15.9
DAVIS………………….15.1 SE [130 deg] * last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.80  DEPARTURE……….+0.68
ASOS…………..0.82
TOTAL PRECIPITATION FOR AUGUST………….1.28  DEPARTURE……….-0.56
ASOS…………..1.26
TOTAL PRECIPITATION FOR THE YEAR……….30.91  DEPARTURE……….-1.92
ASOS………….30.82

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/-8/0.11/009/01              21 ESE RMY 22
8/3  71/60/66/-6/0.02/104/12              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 morning low of 57F; 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 14
HIGH 99F IN 2002
LOW 46F IN 1964
PRECIP 3.06 INCHES IN 1919
PEAK GUST 61 MPH WNW IN 1963

RECORDS FOR AUGUST 15
HIGH 95F IN 1928
LOW 47F IN 1964
PRECIP 1.89 INCHES IN 2011
PEAK GUST 44e MPH S IN 1941

TODAY’S REPORT PREPARED BY: Robert Skilling