BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, AUGUST 15, 2014 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
BRIEF ISOLATED THUNDERSTORM PASSES JUST TO OUR SOUTH EARLY TODAY 
YET ANOTHER COOL DAY FOR MID-AUGUST WITH HIGHS IN 70'S
 
A small fast moving thunderstorm moved across the area this morning with 
0.09 rainfall here at the summit and generally depositing less than a quarter 
inch of rain.  The storm moved offshore by dawn.
 
Considerable cumulus cloudiness formed today as we continue
in an unseasonably cool air mass for mid-August. The high
temperatures have been in the low to middle 70s.
 
 
Today's Observations:
 
7 A.M.
Weather: Partial obscurement, stratus drifting over summit, scattered stratocumulus, 
scattered altocumulus castellanus, thin overcast cirrus, stratus drifting over summit 
obscuring 3/10 of sky, conditions rapidly variable, few altocumulus castellanus SE-S,
towering cumulus ESE past hour
Temperature: 58F; Dew Point: 58F; Wind: WNW at 5 kts
Sea-level pressure: 29.88 ins. Hg, rising then more quickly     
Visibility: 1 mile, fog, except N 1/8 mile, E-SE 2 miles, fog all quadrants 
6-hr max temp: 64F
6-hr min temp: 56F
24-hr precip: 0.09 inch
BHO SA 1155 -X 12 SCT 80 SCT 250 -OVC 1F 117/58/58/3005/988/F3 STRA DRFTG 
OVR SMT FEW ACC SE-S TCU VSB PST HR ESE CDNS RPDLY VRBL VSBY N 1/8 E-S 2/
8/581 53010 ASOS 60009 MANUAL 6009/ ASOS 70009 MANUAL 70009
10064 20056 
 
10 A.M. 
Weather: Scattered cumulus, moderate cumulus, scattered altocumulus lenticularis,
scattered cirrus, 2 levels (altocumulus, cirrus distant W-N-NE)
Temperature: 69F; Dew Point: 53F; Wind: WNW at 5 kts,
Wind: Light  
Sea-level pressure: 29.90 ins. Hg, rising slightly    
Visibility: 60 miles, light distant haze
BHO SA 1455 35 SCT 100 SCT 220 SCT 250 SCT 60 124/69/53/2905/990/
FEW MDT CU AC/ACSL/CI DSNT W-N-NE LGT DSNT HZ WND LGT/
8/241 51007
 
1 P.M. 
Weather: Broken stratocumulus cumulogenitus , broken cirrus, few lower cumulus and
moderate cumulus
Temperature: 73F; Dew Point: 51F; Wind: WSW at 12 kts
Sea-level pressure: 29.88 ins. Hg, falling slightly
Visibility: 60 miles, light distant haze
6-hr max. temp: 73F   
6-hr min. temp: 58F
BHO SA 1755 E45 BKN 250 BKN 60 120/73/51/2512/988/ FEW LWR CU/MDT CU
LGT DSNT HZ/ 8/401 57004 10073 20058
 
 
WEATHER SUMMARY FOR THURSDAY, AUGUST 14, 2014 
 
TEMPERATURE (DEGREES F)
MAX.....73    NORMAL.....80
MIN.....57    NORMAL.....62
MEAN....65    NORMAL.....71
 
DEPARTURE FROM 30-YEAR NORMAL.........................-6
TOTAL DEPARTURE FOR THE MONTH........................-15 [-1.3 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..........-18
TOTAL COOLING UNITS FOR THE SEASON...........416   DEPARTURE..........-32
TOTAL COOLING UNITS LAST SEASON TO DATE......546   DIFFERENCE........-130
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................27  W    AT 12:18 P.M.              
                   ASOS.......................29  W    AT 12:19 P.M.   
                   DAVIS......................27  WNW  AT 11:31 A.M. RMY 29      
FASTEST MILE FOR YESTERDAY....................21  W    AT 11:43 A.M.        
MAXIMUM 2-MINUTE ASOS AVERAGE.................21  W    AT 11:43 A.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE................19  W    AT 11:43 A.M.                 
AVERAGE WIND SPEED AND DIRECTION..............11.6 W               
                   ASOS.......................11.5
                   DAVIS......................10.4 W [280 deg]   
* last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.09  DEPARTURE..........-0.04
                         ASOS..............0.09
TOTAL PRECIPITATION FOR AUGUST.............1.37  DEPARTURE..........-0.60               
                         ASOS..............1.35 
TOTAL PRECIPITATION FOR THE YEAR..........31.00  DEPARTURE..........-1.96           
                         ASOS.............30.91 
 
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 73/57/65/-6/0.00/.../..              27 W   RMY 29
 
8/15 morning low of 56F; the normal low is now 62F  TSTM

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 15
HIGH 95F IN 1928
LOW 47F IN 1964
PRECIP 1.89 INCHES IN 2011
PEAK GUST 44e MPH S IN 1941
 
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
 
TODAY'S REPORT PREPARED BY: Robert Skilling