BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JULY 11, 2012 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
ANOTHER PLEASANT, SUNNY, SUMMER DAY
TEMPERATURES NEAR NORMAL TO SLIGHTLY
ABOVE NORMAL WITH LOW HUMIDITY
 
We need rain because the last important rainfall was back
on June 25 with 1.38 inches, and only 0.42 inch has
been recorded since then or over a period of more than two weeks.
 
Yesterday's pleasant conditions have continued into today.  Temperatures
are once again quite close to normal.  Tuesday's high high of 83F and low
of 61F averaged out right on the normal just like Monday.  So, we’re still
not dropping cooler than normal. The warmer than  average temperatures
have continued (except normal past two days) with the last below normal day
at -3 degrees on June 27. A streak of 11 consecutive days above normal days
ended on July 8. 
 
Dew point temperatures continue to run in the 50's, except in the low 60's
early this morning, providing a very comfortable feel to the air.
A distant haze is reducing visibility to 25 to the east and southeast
while we can view up to 55 miles to the northwest and gradually decreasing.   
The sky has remained mostly sunny with only high clouds which are
thin to partly thin allowing for plenty of sunshine.
 
Today's observations:
 
7 A.M.
Weather: Thin broken cirrus clouds, [2 levels], numerous
altocumulus castellanus W-N-ENE, few altocumulus lenticularis
E-S, few cirrocumulus and cirrocumulus lenticularis SE 
Temperature: 68F; Dew Point: 62F; Wind: W at 3 kts,
Sea-level pressure: 30.18 in Hg, rising then more rapidly 
Visibility: 30 miles, except lower NE-SE, AND except 50 miles
WNW above inversion, hazy
6-hour min. temp: 64F
BHO SA 1155 250 –BKN 300 –BKN 30 221/68/62/2603/018/ NMRS ACC W-NE
CC/FEW CCSL SE INVSN DSSPTNG VSBY WNW 50 LWR NE-SE HAZY ALQDS/
8/081 53018 10068 20064
 
10 A.M.
Weather: Broken dense cirrostratus layer, broken cirrus, sky clearing
clearing ling line extending WSW-NE,
cirrostratus layer partly thin
Temperature: 78F; Dew Point: 56F; Wind: ENE at 4 kts,
Wind: Seabreeze
Sea-level pressure: 30.19 in Hg, rising slightly 
Visibility:  45 miles, 55 miles NW, 25 miles NE-SE
BHO SA 1455 E250 BKN 45 223/78/56/0604/019/ FEW CU DSNT SE AND SW
FEW MDT CU DSNT NW-NNW DNS CS LYR AT 250 PTLY THN VSBY NW 55 AND
NE-SE 25 HAZY/ 8/208 51002
 
1 P.M.
Weather: Scattered cumulus, few towering cumulus, moderate cumulus
in a line SE-SW, few cumulus, moderate cumulus SW-NNW, few
altocumulus lenticularis distant E-ESE, few cirrocumulus near overhead
SSE-SSW
Temperature: 84F; Dew Point 54F; Wind: ENE at 5 kts,
Wind: Light
Sea-level pressure: 30.18 in. Hg, falling slightly
Visibility: 40 miles, 25 NE-SE, hazy all quadrants
6-hour max temp: 84F
BHO SA 1755 45 SCT 250 –BKN 300 –BKN 45 221/84/54/0605/018/ LINE OF
MDT/FEW TCU XTDNG SE-SW MDT CU SW-NNW FEW ACSL DSNT E-ESE FEW
CC NR OVHD SSE-SSW VSBY NE-SE 25 HAZY ALQDS WND LGT/ 8/241 58002
10084 20068 
 
WEATHER SUMMARY FOR TUESDAY, JULY 10
 
TEMPERATURE (DEGREES F)
MAX.....83    NORMAL.....81
MIN.....61    NORMAL.....63
MEAN....72    NORMAL.....72
 
DEPARTURE FROM 30-YEAR NORMAL........................0
TOTAL DEPARTURE FOR THE MONTH......................+38 [+3.8 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............18 W   AT  2:51 P.M.
                   AERO..................18 W   AT  1:19 P.M.
                   ASOS..................17 SSE AT  8:30 P.M.
                   DAVIS.................17 WNW AT  2:09 P.M. RMY 18
THE FASTEST MILE FOR YESTERDAY...........12 SSE AT  8:26 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE............14 W   AT  1:13 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........13 W   AT  2:13 P.M.
AVERAGE WIND SPEED AND DIRECTION........8.0 N
                   ASOS.................7.7
                   DAVIS................7.2 NW [320 deg]
 
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 THE MONTH..........0.38   DEPARTURE...........-0.74
                         ASOS..............0.36
TOTAL PRECIPITATION FOR THE YEAR..........18.07   DEPARTURE..........-10.02
                         ASOS.............17.98-
 
PRELIMINARY CLIMATE SUMMARY FOR JULY 2012 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
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
 
7/1  89/67/78/+8/0.01/676/74        33 WSW AERO 32 MPH WSW RMY 34
7/2  84/66/75/+5/T/644/71           23 W   AERO 22 MPH W   RMY 23
7/3  85/63/74/+3/0.00/787/86        23 W   AERO 21 MPH W   RMY 20
7/4  85/66/76/+5/0.37/480/53        20 W   AERO 20 MPH W   RMY 23
7/5  81/68/75/+4/0.00/729/80        23 NW  AERO 23 MPH NW  RMY 22
7/6  86/64/75/+4/0.00/753/83        18 SSW AERO 18 MPH SSW RMY 19
7/7  81/69/75/+4/T/224/25           23 W   AERO 23 MPH W   RMY 24
7/8  87/66/77/+5/0.00/814/90        23 W   AERO 23 MPH W   RMY 25
7/9  82/61/72/0/0.00/.../..         22 W   AERO 21 MPH W   RMY 23
7/10 83/61/72/0/0.000/.../..        18 W   AERO 18 MPH W   RMY 18
 
7/11 morning low temp: 64F; the normal low is now 63F
 
DAILY RECORDS FOR JULY 2012
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JULY 11
HIGH 98F IN 1911
LOW 49F IN 1890
PRECIP 1.87 INS IN 1959
WIND 53 MPH NW IN 1988
 
RECORDS FOR JULY 12
HIGH 97F IN 1943
LOW 48F IN 1945
PRECIP 1.43 INS IN 1975
WIND 48e MPH SSW IN 1944
 
TODAY'S REPORT PREPARED BY: Robert Skilling, Jonathan O'Brien,
William Wilson, Joey McNamara