BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JUNE 14, 2012
ALL TIMES ARE IN EASTERN STANDARD TIME
 
EARLY MORNING LOW CLOUDS AND FOG CLEARED AWAY LEAVING
US WITH CLEAR SKY, EXCELLENT VISIBILITY AND CONTINUED
COOL TEMPERATURES FOR MID-JUNE IN 60'S EARLY AFTERNOON 
AIR DRIES OUT WITH DEW POINTS DROPPING THRU 40'S
 
The rainfall of June 12-13 totaled 0.62 inch before it
ended as drizzle last evening.  Low clouds and fog
cleared away leaving us with bright sunshine starting
before 10 A.M. EDT this morning.  Temperatures
were rising slowly through the 60's with an east-northeast
wind prevailing under bright sunshine this afternoon.
 
Today's observations:
 
7 A.M.
Weather: Low overcast stratus fractus, 2 layers
Temperature: 58F, Dew Point: 58F; Wind: NNE at 14G21 kts,
Wind: Direction variability N-ENE 
Sea-level pressure: 30.21 inches Hg, rising then more slowly  
Visibility: 35 miles, NE 20, E-SE 12 miles, S 25 miles
6-hour min. temp: 58F
24-hourly rainfall: 0.35 inch 
BHO SA 1155 E6 BKN 12 OVC 35 229/58/58/0314G21/021/ CIG RGD
SKY SCT BCMG OVC VSBY NE 20 E-SE 12 S 25 WNW 50 WND 01V07/ 8/6//
51022 MANUAL 70035 ASOS 70034 10062 20058
 
10 A.M.
Weather: Scattered cumulus, few moderate cumulus except NE,
broken stratocumulus, clearing from the northeast  
Temperature: 62F, Dew Point: 56F; Wind: NE at 16G27 kts,
Wind: Direction variability, N thru E
Sea-level pressure: 30.25 inches Hg, rising then more slowly 
Visibility: 35 miles
BHO SA 1455 35 SCT E50 BKN 35 243/62/56/0516G27/025/ CLRG SKY NE
CU/FEW MDT CU ALQDS XCPT NE VSBY SE-S 25 HAZY VSBY WNW 45 DSNT HZ
PK WND 0427/49/ WND 35V09/ 8/800 51014  
 
1 P.M.
Weather: Clear sky, cumulus and few moderate cumulus distant SSE-W-N,
altocumulus lenticularis and altocumulus east thru distant SSE,
dense cirrus distant SSE and patches dense cirrus WSW-WNW  
Temperature: 66F, Dew Point: 46F; Wind: ENE at 11G20 kts,
Wind: Direction variable N to E   
Sea-level pressure: 30.25 inches Hg, rising then falling 
Visibility: 70 miles, light distant haze
6-hour max. temp: 66F
BHO SA 1755 CLR 70 245/66/46/0611G20/025/ CU/FEW MDT CU DSNT
SSE-W-N ACSL/AC E-DSNT SSE DNS CI DSNT SE AND PTCHS DNS CI WSW-WNW
WND 36V10 LGT DSNT HZ/ 8/242 50002 10066 20058
 
WEATHER SUMMARY FOR WEDNESDAY, JUNE 13
 
TEMPERATURE (DEGREES F)
MAX.....63    NORMAL.....74
MIN.....60    NORMAL.....56
MEAN....62    NORMAL.....65
 
DEPARTURE FROM 30-YEAR NORMAL.......................-3
TOTAL DEPARTURE FOR THE MONTH......................-47 [-3.8 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-3
TOTAL HEATING UNITS FOR THE MONTH..............69   DEPARTURE.........+21
TOTAL HEATING UNITS FOR THE SEASON...........4957   DEPARTURE.......-1388
TOTAL HEATING UNITS LAST SEASON TO DATE......6208   DIFFERENCE......-1251
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY.............25 S   AT 12:48 A.M. 
                   AERO..................23 S   AT 12:48 A.M.
                   ASOS..................25 S   AT 12:48 A.M. 
                   DAVIS.................24 S   AT 12:47 A.M. RMY N/A
THE FASTEST MILE FOR YESTERDAY...........17 S   AT  2:08 A.M. *  
MAXIMUM 2-MINUTE ASOS AVERAGE............17 S   AT  3:53 A.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE...........17 S   AT  1:23 A.M. 
AVERAGE WIND SPEED AND DIRECTION..........9.3 S    
                   ASOS...................8.9
                   DAVIS..................9.0 S [190 deg.]
* last of several occurrences.
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.35  DEPARTURE...........+0.19
                         ASOS..............0.34
TOTAL PRECIPITATION FOR THE MONTH..........2.55  DEPARTURE...........+0.42
                         ASOS..............2.47
TOTAL PRECIPITATION FOR THE YEAR..........15.79  DEPARTURE...........-9.00
                         ASOS.............15.72
 
PRELIMINARY CLIMATE SUMMARY FOR JUNE 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
 
6/1  67/53/60/-2/0.00/742/82        28 ENE AERO 28 MPH ENE RMY 29
6/2  63/52/58/-4/0.80/000/00        39 SE  AERO 39 MPH SE  RMY 40
6/3  62/50/56/-6/0.01/082/09        31 N   AERO 28 MPH N   RMY 29
6/4  50/47/49/-14/0.58/000/00       44 NNE AERO 43 MPH NNE RMY 43
6/5  54/47/51/-12/0.23/009/01       23 NNE AERO 18 MPH NNE RMY N/A
6/6  63/48/56/-7/0.01/310/34        16 ENE AERO 14 MPH ENE RMY 15
6/7  70/50/60/-4/0.27/328/36        31 NE  AERO 31 MPH NE  RMY 32  TSTM, SMALL HAIL 1/8 DIA
6/8  76/51/64/0/0.03/502/55         25 WSW AERO 25 MPH WNW RMY 26  TSTM
6/9  76/56/66/+2/0.00/822/90        25 WNW AERO 24 MPH WNW RMY 24
6/10 78/56/67/+2/0.00/868/95        21 E   AERO 18 MPH E   RMY 18
6/11 76/55/66/+1/0.00/.../..        23 S   AERO 21 MPH S   RMY 22
6/12 73/57/65/0/0.03/.../..         29 S   AERO 29 MPH S   RMY 30
6/13 63/60/62/-3/0.59/000/00        25 S   AERO 23 MPH S   RMY N/A
 
6/14  morning low temp: 58F; the normal low is now 57F
 
DAILY RECORDS FOR JUNE 2012
6/4 - NEW DAILY RECORD LOW MAXIMUM TEMP OF 50F;
surpasses the previous record of 51F in 1891.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JUNE 14
HIGH 93F IN 1956
LOW 41F IN 1912
PRECIP 1.49 INS 1896
PEAK GUST 55 MPH WNW IN 1958
 
RECORDS FOR JUNE 15
HIGH 94F IN 1988
LOW 42F IN 1959, 1978
PRECIP 2.04 INS IN 1903
PEAK GUST 52 MPH SW IN 1972
 
TODAY'S REPORT PREPARED BY: Robert Skilling/William Wilson