BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 19, 2014 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
EARLY TODAY......
CLOUDS AND VIRGA (RAIN ALOFT) BUT NOT A DROP FELL
HERE AT THE SUMMIT AS AREA OF SHOWERS AND RAIN
MOVED EASTWARD TO OUR SOUTH THIS MORNING
 
A layer of altostratus covered the sky early this
morning with considerable virga observed below the
layer but not a drop of rain fell here as an area of
rain and showers slid eastward just to our south.
Some light rain fell across southeastern MA as a
gradual clearing moved our way from the west and
north followed by sunshine by mid-morning.
 
After a rather windy day yesterday (gusts to 30 to 40 MPH)
with a top temperature of just 83F, temperatures have returned
to 80 degrees again early this afternoon but with slowly
lowering dew points going from the 60's early today to the
upper 50's early this afternoon.
 
Today's Observations:
 
7 A.M.
Weather: Overcast altostratus with virga, few altocumulus and
altocumulus lenticularis, break in overcast/line of clearing
distant NW-NW, ceiling lower SE-SSW, virga all quadrants
Temperature: 67F; Dew Point: 62F; Wind: NW at 9 kts
Sea-level pressure: 29.96 ins. Hg, rising slightly     
Visibility: 60 miles, NW 80 miles, lower visibility
to the southeast thru south-southwest
6-hr max temp: 68F
6-hr min temp: 66F
24-hr precip: None
BHO SA 1155 E150 OVC 60 147/67/62/3209/996/ VIRGA AND FEW AC/ACSL ALQDS 
CIG/VSBY LWR SE-SSW BINOVC/CLR SKY BND DNST NW-NE VSBY NW 80 LGT DSNT HZ/
8/07/ 51006 10068 20066
 
10 A.M.
Weather: Scattered altocumulus, scattered dense cirrus,
thin overcast cirrus/cirrostratus, few cumulus distant SE,
cumulus forming S-W-N, break in overcast (line of clearing) NW-NE
Temperature: 73F; Dew Point: 60F; Wind: WNW at 6 kts
Sea-level pressure: 29.96 ins. Hg, steady  
Visibility: 55 miles, except 70 miles NW, distant haze
BHO SA 1455 170 SCT 220 SCT 250 –OVC 55 146/73/60/3006/996/ CU FRMG
DSNT SE AND CU FRMG S-W-N DNS CI S BINOVC/LINE OF CLRG NW-NW
VSBY NW 70 DSNT HZ ALQDS/ 8/238 58001
 
1 P.M. 
Weather: Scattered cumulus, moderate cumulus, scattered dense cirrus,
scattered cirrus, cirrus layer E-SE receding  
Temperature: 78F; Dew Point: 58F; Wind: NW at 6 kts,
Sea-level pressure: 29.94 ins. Hg, falling then more rapidly
Visibility: 60 miles, except 65 miles NW, distant haze
6-hr max temp: 79F
BHO SA 1755 50 SCT 220 SCT 250 SCT 60 138/78/58/3206/994/ CU/MDT CU 
CI/DNS LYR E-SW RCDNG VSBY WNW 65/ 8/208 10079 20067
 
WEATHER SUMMARY FOR WEDNESDAY, JUNE 18, 2014
 
TEMPERATURE (DEGREES F)
MAX.....83    NORMAL.....76
MIN.....65    NORMAL.....58
MEAN....74    NORMAL.....67
 
DEPARTURE FROM 30-YEAR NORMAL.........................+7
TOTAL DEPARTURE FOR THE MONTH........................+30 [+1.5 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.........-33     
TOTAL HEATING UNITS FOR THE SEASON...........6421  DEPARTURE.........+58     
TOTAL HEATING UNITS LAST SEASON TO DATE......5778  DIFFERENCE.... ..+643
 
COOLING DEGREE DAYS (SEASON JAN TO DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............9   DEPARTURE..........+5
TOTAL COOLING UNITS FOR THE MONTH.............45   DEPARTURE..........-2
TOTAL COOLING UNITS FOR THE SEASON............58   DEPARTURE.........-13
TOTAL COOLING UNITS LAST SEASON TO DATE.......70   DIFFERENCE........-12
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................35  W    AT   8:10 A.M.  
                   ASOS.......................40  W    AT   8:09 A.M.  
                   DAVIS......................37  WSW  AT   2:32 A.M. RMY 38
FASTEST MILE FOR YESTERDAY....................29  W    AT   8:10 A.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE.................30  W    AT   8:10 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE................26  W    AT   8:10 A.M.
AVERAGE WIND SPEED AND DIRECTION............. 15.3 WNW           
                   ASOS.......................15.1    
                   DAVIS......................13.5 W [270 deg]
 
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 THE MONTH..........1.92  DEPARTURE..........-0.94         
                         ASOS..............1.87 
TOTAL PRECIPITATION FOR THE YEAR..........24.26  DEPARTURE..........-1.26
                         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 83/65/74/+7/T/.../..                 35 W   RMY 38
 
6/19 morning low temp: 66F; 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 19
HIGH 92F IN 1923
LOW 40F IN 1920
PRECIP 3.92 INS 1922
PEAK GUST 66e MPH NW IN 1940
 
RECORDS FOR JUNE 20
HIGH 94F IN 1953
LOW 41F IN 1918
PRECIP 2.62 INS 1945
PEAK GUST 63 MPH NE IN 1967, SSW IN 2010
 
TODAY'S REPORT PREPARED BY: Robert Skilling