BLUE HILL METEOROLOGICAL OBSERVATORY  
MILTON, MASSACHUSETTS 
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, JUNE 3, 2011 
ALL TIMES ARE IN EASTERN STANDARD TIME 

COOL, DRY, AND BREEZY;
PROBABLE TORNADO DEBRIS FOUND ON HILL TODAY;

With a low of 48F and a high of 66F through 2PM EDT today, temperatures
are running a few degrees below average for the first time in about
10 days.  Dew point temperatures are in the lower 40s, providing for a
very comfortable feel to the air.  West winds have brought in the
drier, cooler air mass.  Winds are quite brisk today, gusting near
35 mph occasionally.  Winds were stronger yesterday, peaking at 50 mph
at 10:47 AM EDT.
While leading a school group hike up the summit today, Program Director
Don McCasland happened across an intriguing article on the ground. 
What he found appears to be a piece of debris that was picked up by the
recent central MA tornadoes, lofted high up in the atmosphere, and 
deposited on the north slope of Great Blue Hill.  It is a Polaroid
picture of a house under construction, and it is dated June 10, 1999.
The photo is plastered with dirt and mud on one side, and has a couple
of small tears on its edges.  It's exact location of origin is unknown.

Today's observations: 

7 A.M.   
Weather: Scattered cumulus and cumulus fractus, scattered altocumulus,
scattered thin cirrus, cumulus/cumulus fractus distant WNW-NNE and 
distant ESE, few small cumulus/cumulus fractus forming SSE-S and
SW-WSW, altocumulus/altocumulus lenticularis NW-NE-ESE
Temperature: 55F, Dew point: 41F; Wind: W at 15G25 kts
Wind: Peak wind gust 27 kts W at 6:30 AM EST
Wind: Direction variable SW-NW
Sea-level pressure: 29.94 inches Hg, rising
Visibility: 65 miles
6-hour min. temp: 48F
BHO SA 1155 40 SCT 90 SCT 250 –SCT 65 140/55/41/2815G25/994/ CU/CUFRA
DSNT WNW-NNE AND DSNT ESE FEW SML CU/CUFRA FRMG SSE-S AND SW-WSW
AC/ACSL NW-NE-ESE PK WND 2727/30 WND 22V31/ 8/141 52010 10055 20048

10 A.M.
Weather: Broken cumulus, broken altocumulus, few moderate cumulus all
quadrants, few cumulus fractus all quadrants, altocumulus/altocumulus
lenticularis all quadrants except SE-SW
Temperature: 59F, Dew point: 42F; Wind: W at 15G24 kts,
Wind: Peak wind gust 31 kts W at 9:17 AM EST
Sea-level pressure: 29.97 inches Hg, rising
Visibility: 65 miles  
BHO SA 1455 E45 BKN 100 BKN 65 148/59/42/2815G24/997/ FEW MDT CU ALQDS
FEW CUFRA ALQDS AC/ACSL ALQDS XCPT SE-SW PK WND 2831/17 WND 24V34/
8/240 53008

1 P.M. 
Weather: Scattered cumulus, scattered dense cirrus, scattered thin
cirrus, few stratocumulus NNE-E-S, few stratocumulus lenticularis 
distant NE-E, few moderate cumulus all quadrants, few cumulus fractus
all quadrants, dense cirrus layer distant WNW-NNE
Temperature: 65F, Dew point: 43F; Wind: W at 16G29 kts,
Wind: Peak wind gust 29 kts W at 12:47 PM EST,
Wind: Direction variable WSW-NNW
Sea-level pressure: 29.95 inches Hg, falling
Visibility: 65 miles 
6-hour max. temp: 66F
BHO SA 1755 55 SCT 200 SCT 250 –SCT 65 142/65/43/2816G29/995/ FEW SC
NNE-E-S FEW SCSL DSNT NE-E FEW MDT CU ALQDS FEW CUFRA ALQDS DNS CI
LYR DSNT WNW-NNE PK WND 2929/47 WND 24V33/ 8/402 58006 10066 20055

WEATHER SUMMARY FOR THURSDAY, JUNE 2 

TEMPERATURE (DEGREES F)
MAX.....72     NORMAL.....72   
MIN.....52     NORMAL.....52
MEAN....62     NORMAL.....62

DEPARTURE FROM 30-YEAR NORMAL....................0
TOTAL DEPARTURE FOR THE MONTH...................+8 [+3.8 DEGREES/DAY] 
 
HEATING DEGREE DAYS	
TOTAL HEATING UNITS FOR YESTERDAY.............3    DEPARTURE........-2
TOTAL HEATING UNITS FOR THE MONTH.............3    DEPARTURE........-7
TOTAL HEATING UNITS FOR THE SEASON.........6156    DEPARTURE......-151 
TOTAL HEATING UNITS LAST SEASON TO DATE....5641    DIFFERENCE.....+515

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..............50 WSW AT  9:47 A.M. 
                   AEROVANE...............54 WSW AT  9:46 A.M. 
                   ASOS...................51 W   AT  9:46 A.M. 
                   DAVIS..................47 W   AT  9:46 A.M. 
THE FASTEST MILE FOR YESTERDAY............40 WSW AT  9:46 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE.............38 W   AT  9:47 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE............36 WSW AT  9:47 A.M. 
AVERAGE WIND SPEED AND DIRECTION........19.3 W  
                   ASOS.................18.1    
                   DAVIS................18.1 W [259 deg] 
  
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE........-0.13
                         ASOS..............0.00   
TOTAL PRECIPITATION FOR THE MONTH..........0.64  DEPARTURE........+0.38  
                         ASOS..............0.65
TOTAL PRECIPITATION FOR THE YEAR..........22.83  DEPARTURE........+0.83
                        ASOS..............23.47**
**ASOS data is in error due to system failure on 1/12-13    

PRELIMINARY CLIMATE SUMMARY FOR JUNE 2011 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized

6/1  80/60/70/+8/0.64/.../..         39 S    AERO 44 MPH S   TSTM
6/2  72/52/62/0/0.00/.../..          50 WSW  AERO 54 MPH WSW

6/3 our morning low temp: 48F; the normal low is 53F 

DAILY RECORDS FOR JUNE 2011
None so far...

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR JUNE 3
HIGH 98F IN 1919
LOW 38F IN 1929
PRECIP 2.40 INS 2006
PEAK GUST 47 MPH NW IN 1998

RECORDS FOR JUNE 4
HIGH 99F IN 1919 [Record for month]
LOW 41F IN 1915,1926
PRECIP 1.52 INS IN 2007 
PEAK GUST 48 MPH SSE IN 1983

TODAY'S REPORT PREPARED BY: Sean Fankhauser