BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 18, 2014 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HAZE AND HUMIDITY SLOWLY GIVING WAY UNDER BREEZY CONDITIONS
 
A strong line of thunderstorms moved through New England early this
morning before falling apart just west of the Boston area and reforming
over the Cape. Only a trace of rain was recorded before 5:00 AM EST
this morning on Great Blue Hill.
 
Winds have ramped up from the SW shifting WNW by mid day today, and
gusting just shy of 40 mph. Visibility has improved as well, up from
25 miles this morning to 70 miles at the 1:00 PM EST observation
this afternoon.
 
Today's Observations:
 
7 A.M.
Weather: Scattered cirrus fibratus, few cumulus
and altocumulus distant W-NNW, few dense cirrus in
all directions
Temperature: 75F; Dew Point: 65F; Wind: W at 14G21 kts
Sea-level pressure: 29.76 ins. Hg, falling steadily    
Visibility: 25 miles, light haze in all directions
6-hr max temp: 75F
6-hr min temp: 67F
24-hr precip: Trace
BHO SA 1155 250 SCT 25 077/75/65/2614G21/976/
FEW CU AND AC DSNT W-NNW FEW DNS CI ALQDS LGT HZ ALQDS/
8/132 57004 MANUAL 6000/ 10075 20067
 
10 A.M.
Weather: Scattered stratocumulus, thin overcast
of cirrus fibratus
Temperature: 78F; Dew Point: 65F; Wind: WNW at 17G27 kts
Peak Gust: 28 kts WNW
Sea-level pressure: 29.77 ins. Hg, steady then rising 
Visibility: 60 miles, light distant haze in all direction
BHO SA 1455 55 SCT E250 –OVC 60 081/78/65/2917G27/977/
LGT DSNT HZ ALQDS PK WND 2928/42/ 8401 53003
 
1 P.M. 
Weather: Scattered stratocumulus, broken cirrus/cirrostratus,
cirrostratus WNW moving ESE
Temperature: 82F; Dew Point: 64F; Wind: WNW at 14G22 kts,
Sea-level pressure: 29.82 ins. Hg, rising, then steady
Visibility: 70 miles, light distant haze in all directions
6-hr max temp: 83F 
6-hr min temp: 75F  
BHO SA 1755 44 SCT E250 BKN 70 099/82/64/3014G22/982/
CS INVADING WNW MOV ESE LGT DSNT HZ ALQDS/ 8/404 51018 10083 20075
 
WEATHER SUMMARY FOR TUESDAY, JUNE 17, 2014
 
TEMPERATURE (DEGREES F)
MAX.....81    NORMAL.....76
MIN.....58    NORMAL.....58
MEAN....70    NORMAL.....67
 
DEPARTURE FROM 30-YEAR NORMAL.........................+3
TOTAL DEPARTURE FOR THE MONTH.........................+22 [+1.1 DEGREE/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............0  DEPARTURE..........-2
TOTAL HEATING UNITS FOR THE MONTH..............27  DEPARTURE.........-31     
TOTAL HEATING UNITS FOR THE SEASON...........6421  DEPARTURE.........+60     
TOTAL HEATING UNITS LAST SEASON TO DATE......5778  DIFFERENCE.... ..+643
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............5   DEPARTURE..........+1
TOTAL COOLING UNITS FOR THE MONTH.............36   DEPARTURE..........-8
TOTAL COOLING UNITS FOR THE SEASON............49   DEPARTURE.........-19
TOTAL COOLING UNITS LAST SEASON TO DATE.......70   DIFFERENCE........-21
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................25  S    AT   5:45 A.M.         
                   ASOS.......................25  S    AT   5:45 A.M.          
                   DAVIS......................23  SSE  AT   5:44 A.M. RMY 24
FASTEST MILE FOR YESTERDAY....................18  S    AT   5:49 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE.................18  S    AT   6:22 A.M.       
MAXIMUM 2-MINUTE DAVIS AVERAGE................17  S    AT   6:22 A.M.       
AVERAGE WIND SPEED AND DIRECTION............. 12.6 S             
                   ASOS.......................12.5    
                   DAVIS......................11.6 S [194 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M...Trace  DEPARTURE..........-0.14
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.92  DEPARTURE..........-0.80         
                         ASOS..............1.87 
TOTAL PRECIPITATION FOR THE YEAR..........24.26  DEPARTURE..........-1.12
                         ASOS.............24.39
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 2014 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
 
6/1  72/47/60/-2/0.00/887/98              21 NNW RMY 21
6/2  81/52/67/+5//0.00/879/97             22 SSW RMY 23
6/3  81/57/69/+7/0.00/889/98              25 SSE RMY 28
6/4  64/52/58/-5/0.11/000/00              16 SE  RMY N/A
6/5  60/55/58/-5/0.91/000/00              21 NNW RMY 24
6/6  73/54/64/+1/0.00/655/72              22 WNW RMY 23
6/7  82/56/69/+5/0.00/893/98              21 W   RMY 22
6/8  84/63/74/+10/0.00/702/77             18 SW  RMY N/A
6/9  77/61/69/+5/0.13/046/05              21 WSW RMY 22
6/10 80/56/68/+3/0.10/183/20              29 ENE RMY 33 
6/11 69/55/62/-3/T/439/48                 21 ENE RMY 20
6/12 70/56/63/-2/0.00/101/11              21 ESE RMY N/A
6/13 67/58/63/-2/..../000/00              25 E   RMY N/A 
6/14 73/58/66/0/..../.../..               23 WNW RMY 24
6/15 78/53/66/0/0.00/.../..               25 NNW RMY 27
6/16 79/56/68/+2/0.00/.../..              23 S   RMY N/A
6/17 81/58/70/+3/T/.../..                 25 S   RMY 24
 
6/18 morning low temp: 65F; the normal low is now 58F
 
DAILY RECORDS FOR JUNE 2014
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):    
 
RECORDS FOR JUNE 18
HIGH 93F IN 1929,1994
LOW 39F IN 1920
PRECIP 3.36 INS 1998
PEAK GUST 48e MPH W IN 1943
 
RECORDS FOR JUNE 19
HIGH 92F IN 1923
LOW 40F IN 1920
PRECIP 3.92 INS 1922
PEAK GUST 66e MPH NW IN 1940
 
TODAY'S REPORT PREPARED BY: Brian Fitzgerald