Tuesday, August 12, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, AUGUST 12, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

MUCH NEEDED RAIN ON THE WAY AS CLOUDS MOVE
INTO THE REGION

Skies that were mostly clear yesterday morning had
plenty of high cirrus and cirrostratus increasing
by the 7:00 and 10:00 AM EST observations today.
Low cumulus could be seen creeping in from the WSW
all morning as well.

By the 1:00 PM EST observation today 81F had been
reached as a maximum temperature, with visibility
of approximately 65 miles in most directions. Cirrostratus
present mostly south and west have advanced very little
this morning as indicated by radar and satellite as well.

Ahead of tomorrow’s expected rainfall, our station
holds a deficit of -1.40 inches of rain for the month,
and -2.76 inches for the year as of yesterday.

Today’s Observations:

7 A.M.
Weather: Few cumulus, broken cirrus fibratus growing denser
Temperature: 69F; Dew Point: 64F; Wind: S at 7 kts
Sea-level pressure: 30.14 ins. Hg, rising, then more quickly
Visibility: 45 miles, thin fog in all directions
6-hr max temp: 69F
6-hr min temp: 64F
24-hr precip: None
BHO SA 1155 E250 BKN 45 207/69/64/1707/014/
FEW CU DSNT SSW-WNW THN FG ALQDS/ 8/1004 53006 10069 20064

10 A.M.
Weather: Scattered cirrostratus, broken cirrus fibratus,
few cumulus in all directions
Temperature: 76F; Dew Point: 59F; Wind: SSE at 10 kts,
Sea-level pressure: 30.13 ins. Hg, rising, then falling and lower
Visibility: 70 miles, light distant haze
BHO SA 1455 220 SCT E250 BKN 70 204/76/59/1610/013/
FEW CU ALQDS LGT DSNT HZ ALQDS/ 8/106 58003

1 P.M.
Weather: Scattered cirrostratus, broken cirrus fibratus,
few cumulus in all directions
Temperature: 80F; Dew Point: 56F; Wind: SE at 16G20 kts
Sea-level pressure: 30.11 ins. Hg, falling, then more quickly
Visibility: 65 miles, light distant haze
6-hr max. temp: 81F
6-hr min. temp: 69F
BHO SA 1755 220 SCT E250 BKN 65 196/80/56/1416G20/011/
FEW CU ALQDS LGT DSNT HZ ALQDS/ 8/106 58008 10081 20069

WEATHER SUMMARY FOR MONDAY, AUGUST 11, 2014

TEMPERATURE (DEGREES F)
MAX…..85    NORMAL…..80
MIN…..63    NORMAL…..63
MEAN….74    NORMAL…..71

DEPARTURE FROM 30-YEAR NORMAL…………………….+3
TOTAL DEPARTURE FOR THE MONTH…………………….-5 [-0.5 DEGREE/DAY]

COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..9   DEPARTURE………..+2
TOTAL COOLING UNITS FOR THE MONTH………….71   DEPARTURE………..-7
TOTAL COOLING UNITS FOR THE SEASON………..408   DEPARTURE……….-21
TOTAL COOLING UNITS LAST SEASON TO DATE……535   DIFFERENCE……..-127

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………25  S    AT  4:27 P.M.*
ASOS…………………..28  SSW  AT  4:07 P.M.
DAVIS………………….26  SSW  AT  4:06 P.M. RMY 29
FASTEST MILE FOR YESTERDAY………………..21  S    AT  4:27 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..22  S    AT  4:27 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….20  SSW  AT  4:20 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..10.8 S
ASOS…………………..10.8
DAVIS………………….9.8 S  [194 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 AUGUST………….0.19  DEPARTURE……….-1.40
ASOS…………..0.15
TOTAL PRECIPITATION FOR THE YEAR……….29.71  DEPARTURE……….-2.76
ASOS………….32.03

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  morning low of 62F; the normal low is now 63F

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 12
HIGH 99F IN 1944
LOW 48F IN 1930
PRECIP 1.89 INCHES IN 1979
PEAK GUST 50 MPH NE IN 1983

RECORDS FOR AUGUST 13
HIGH 98F IN 1944, 2002
LOW 47F IN 1902, 1957
PRECIP 2.92 INCHES IN 1989
PEAK GUST 52 MPH SSE IN 1963

TODAY’S REPORT PREPARED BY: Brian Fitzgerald