BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, AUGUST 26, 2012 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
ANOTHER FOGGY START TO THE MORNING
DRY, WITH MOSTLY CLEAR SKIES
AUGUST 2012 AMONG WARMEST ON RECORD
 
Today was another foggy start to the morning reducing visibility down to 1-1.5 miles
below the summit. There was even some thin fog drifting over the summit. Since then,
the fog burned off fairly quickly increasing visibility to about 40 miles. Today has
been mostly sunny with a few scattered cumulus and cirrus clouds passing through the
vicinity. Winds have been light and variable today. Humidity values have dropped
tremendously since this morning as the fog burnt off. With an east wind overnight,
there was even a nice scent of the ocean this morning.
 
Twenty-two of the first twenty-five days this month have been
warmer than average, and August 2012 is now among the warmest
on record with an average departure of more than three degrees
per day. The corrected mean temperature for August through
the 25th is 73.2 deg F.
 
Warmest Augusts (deg F), 1885-2011:
 
1) 72.5 in 1988
2) 72.3 in 2005
3) 72.1 in 2002
4) 72.0 in 2001
 
Today's observations:
 
7 A.M.
Weather: Scattered cirrus (2 layers), cumulus band SE-SSE, few distant altocumulus
W-N, few cirrocumulus SE and NW, virga W, contrail W-E, thin fog/ground fog all
quadrants, thin fog drifting over summit, fog slowly dissipating
Temperature: 65F; Dew Point: 64F; Wind: ENE at 5 kts,
Wind: Light
Sea-level pressure: 30.35 ins. Hg, rising    
Visibility: 1/2-1 mile, NW-NE 1/8 mile, E-SSE 1/2 mile, S-SW 2 miles, W 1/2 mile,
fog
6-hour min. temp: 63F
BHO SA 1155 220 SCT 250 SCT 1/2V1F 279/65/64/0605/035/ CU BAND NE-SSE FEW DSNT AC
W-N FEW CC SE AND NW VIRGA W CONTRAIL W-E THN F/GF ALQDS THN FG DRFTG OVR SMT FG
SLWLY DSPTG VSBY NW-NE 1/8 E-SSE 1/2 S-SW 2 W 1/2 WND LGT/ 8/149 51007 10065 20063
 
10 A.M.
Weather: Scattered cirrus, few small cumulus/cumulus fractus forming all quadrants
except E-SE, altocumulus cumulogenitus band distant SE-SSW, few altocumulus standing
lenticularis S-W, contrails all quadrants, distant haze
Temperature: 75F; Dew Point: 59F; Wind: ESE at 6 kts,
Wind: Light and variable
Sea-level pressure: 30.35 ins. Hg, decreasing very slowly  
Visibility: 40 miles, WSW-NNW 35 miles, distant haze
BHO SA 1455 200 SCT 40 279/75/59/1206/035/ FEW SM CU/CUFRA FRMG ALQDS XCPT E-SE ACCU
BAND DSNT SE-SSW FEW ACSL S-W CONTRAILS ALQDS DSNT HZ VSBY LWR WSW-NNW 35 WND L/V/
8/141 50000
 
1 P.M.
Weather: Clear, few cumulus all quadrants except NNW-ESE, few distant altocumulus
cumulogenitus SE-SW, light distant haze
Temperature: 80F; Dew Point: 60F; Wind: E at 6 kts,
Wind: Light and variable
Sea-level pressure: 30.32 ins. Hg, decreasing  
Visibility: 55 miles, light distant haze
6-hour max. temp: 80 deg F
BHO SA 1755 CLR 55 269/80/60/1006/032/ FEW CU ALQDS XCPT NNW-ESE FEW DSNT ACCU SE-SW
LGT DSNT HZ WND L/V/ 8/160 58010 10080 20065
 
 
WEATHER SUMMARY FOR SATURDAY, AUGUST 25
 
TEMPERATURE (DEGREES F)
MAX.....80    NORMAL.....78
MIN.....64    NORMAL.....61
MEAN....72    NORMAL.....69
 
DEPARTURE FROM 30-YEAR NORMAL.....................+3
TOTAL DEPARTURE FOR THE MONTH....................+85 [+3.2 DEGREES/DAY]
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............20 ESE AT  2:53 P.M. *
                   AERO..................18 ESE AT  2:48 P.M.
                   ASOS..................18 ESE AT  2:47 P.M.
                   DAVIS.................18 E   AT  2:52 P.M. RMY 18
THE FASTEST MILE FOR YESTERDAY...........14 ESE AT  9:18 P.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE............14 ESE AT  9:19 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE...........13 E   AT  2:54 P.M.
AVERAGE WIND SPEED AND DIRECTION........8.4 SE
                   ASOS.................8.4
                   DAVIS................7.7 SE [128 deg]
* last of several occurrences.
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00   DEPARTURE...........-0.11
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........2.74   DEPARTURE...........-0.62
                         ASOS..............2.70
TOTAL PRECIPITATION FOR THE YEAR..........24.35   DEPARTURE..........-10.00
                         ASOS.............24.25
 
PRELIMINARY CLIMATE SUMMARY FOR AUGUST 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
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  82/66/74/+2/0.58/390/45        33 W   AERO 33 MPH W   RMY 35
8/2  87/67/77/+5/T/648/75           20 W   AERO 20 MPH W   RMY 20
8/3  90/70/80/+8/0.00/707/82        23 SW  AERO 23 MPH SW  RMY 23
8/4  91/72/82/+10/0.00/713/83       22 S   AERP 21 MPH S   RMY 23
8/5  87/72/80/+8/0.14/660/77        37 S   AERO 37 MPH SSW RMY 37
8/6  82/67/75/+3/0.00/710/83        25 WNW AERO 27 MPH WNW RMY 26
8/7  84/65/75/+3/0.00/725/85        23 S   AERO 21 MPH S   RMY 23
8/8  87/68/78/+6/0.00/578/68        20 S   AERO 18 MPH S   RMY 18
8/9  89/68/79/+7/0.00/630/77        25 S   AERO 23 MPH S   RMY 25
8/10 84/70/77/+6/0.87/228/27        32 SE  AERO 32 MPH SE  RMY 32 TSTM
8/11 84/69/77/+6/0.00/464/55        25 S   AERO 27 MPH S   RMY 27
8/12 83/70/77/+6/0.03/420/50        24 S   AERO 23 MPH S   RMY 23
8/13 84/66/75/+4/0.00/787/94        21 WNW AERO 20 MPH WNW RMY 19
8/14 81/64/73/+2/0.00/451/54        18 W   AERO 18 MPH SW  RMY 19
8/15 83/63/73/+2/0.89/358/43        33 W   AERO 33 MPH W   RMY 32 TSTM
8/16 82/64/73/+2/T/714/86           23 WNW AERO 22 MPH WNW RMY 21
8/17 84/65/75/+4/T/729/88           26 S   AERO 26 MPH SSW RMY 27
8/18 69/62/66/-5/0.22/0/0           18 WNW AERO 17 MPH WNW RMY 16
8/19 73/56/65/-5/T/353/43           17 N   AERO 16 MPH NNW RMY 16
8/20 77/61/69/-1/0.00/312/38        16 SSW AERO 15 MPH SSW RMY 16
8/21 81/62/72/+2/0.01/539/66        21 W   AERO 20 MPH W   RMY 19 
8/22 82/62/72/+2/0.00/766/94        17 W   AERO 17 MPH SW  RMY N/A
8/23 85/63/74/+4/0.00/.../..        21 SSW AERO 21 MPH SSW RMY 21
8/24 80/65/73/+3/0.00/.../..        18 W   AERO 16 MPH W   RMY 16
8/25 80/64/72/+3/0.00/.../..        20 ESE AER0 18 MPH ESE RMY 18
 
8/26 morning low temp: 63F; the normal low is now 61F
 
DAILY RECORDS FOR AUGUST 2012
8/4 - DAILY RECORD HIGH MINIMUM TEMP OF 72F;
      ties the current record of 72F in 1974.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR AUGUST 26
HIGH 96F IN 1900, 1948
LOW 46F IN 1885
PRECIP 5.85 INCHES IN 1924
PEAK GUST 55e MPH NNW IN 1947
 
RECORDS FOR AUGUST 27
HIGH 99F IN 1948
LOW 44F IN 1885
PRECIP 2.77 INCHES IN 1946
PEAK GUST 48 MPH NW IN 1983
 
TODAY'S REPORT PREPARED BY: George Tabeek