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

DAILY DISCUSSION AND CLIMATE SUMMARY
WEDNESDAY, JUNE 1, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME

COOLER TEMPERATURES AND MOSTLY CLEAR SKIES, BUT HAZY 
CONDITIONS REMAIN

Temperatures were cooler today, reaching a maximum of only 70F by
the 1:00PM EST observation.  While skies were party cloudy with thin,
high cirrus and a few afternoon cumulus, distant haze reduced visibility
to just 40 miles at each observation.

Today's Observations:

7 A.M. 
Weather: Scattered cirrus 
Temperature: 67F; Dew Point: 52F; Wind: NE at 10G16 kts
Sea-level pressure: 30.10 ins. Hg, steady, then rising
Visibility: 40 miles, distant haze
6-hr Max temp: 67F 
6-hr Min temp: 63F
24-hr precip: 0.00 in.
BHO SA 1155 250 SCT 40 192/67/52/0510G16/010/ DSNT HZ/ 
8/001 51027 10067 20063

10 A.M.
Weather: Scattered cirrus, thin broken cirrus (2 levels) 
Temperature: 69F; Dew Point: 54F; Wind: NE  at 13G19 kts
Sea-level pressure: 30.16 ins. Hg, rising, then more quickly 
Visibility: 40 miles, except 45 miles WNW, distant haze
BHO SA 1455 220 SCT 250 -BKN 300 -BKN 40 212/69/54/0513G19/016/ 
VSBY WNW 45 DSNT HZ WND 36V09/ 8/001 51020 

1 P.M.
Weather: Few cumulus SSW-WNW, scattered cirrus
Temperature: 70F; Dew Point: 55F; Wind: NE at 9 kts
Sea-level pressure: 30.16 ins. Hg, rising, then falling 
Visibility: 40 miles, except 45 miles WNW, distant haze
6-hr Max temp: 70F
6-hr Min temp: 67F
BHO SA 1755 250 SCT 40 212/70/55/0509/016/ FEW CU SSW-WNW VSBY WNW 45 
DSNT HZ/ 8/101 50000 10070 20067

SUMMARY FOR TUESDAY, MAY 31, 2016 
  
TEMPERATURE (DEGREES F)
MAX.....84   NORMAL.....71
MIN.....67   NORMAL.....52 
MEAN....76   NORMAL.....61

DEPARTURE FROM 30-YEAR NORMAL.........................+15
TOTAL DEPARTURE FOR THE MONTH.........................+33 [+0.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............0   DEPARTURE..........-5
TOTAL HEATING UNITS FOR THE MONTH.............256   DEPARTURE.........-12
TOTAL HEATING UNITS FOR THE SEASON...........5248   DEPARTURE.......-1055
TOTAL HEATING UNITS LAST SEASON TO DATE......6404   DIFFERENCE......-1156   

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................25 W    AT  5:18 P.M.         
                   ASOS........................29 W    AT 12:52 P.M.      
                   DAVIS.......................27 WSW  AT 12:19 P.M. RMY 28
FASTEST MILE FOR YESTERDAY.....................17 W    AT  4:31 P.M. *                       
MAXIMUM 2-MINUTE ASOS AVERAGE..................20 W    AT  4:31 P.M.      
MAXIMUM 2-MINUTE DAVIS AVERAGE.................19 WSW  AT 12:58 P.M.       
AVERAGE WIND SPEED AND DIRECTION.............11.7 WSW
                   ASOS......................11.1 
                   DAVIS.....................10.3 WSW [250 Deg.]
* Last of several occurrences

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE......-0.17
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.00  DEPARTURE......-0.17
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE YEAR..........20.14  DEPARTURE......-2.54
                         ASOS.............20.44
 
PRELIMINARY CLIMATE SUMMARY FOR MAY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system 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

5/1 52/39/46/-7/0.08/T/000/00               21 S   AERO 22 SE  RMY 20
5/2 50/41/46/-7/0.31/0.0/000/00             20 NE  AERO 21 NE  RMY 18
5/3 48/43/46/-7/0.16/0.0/000/00             16 E   AERO 16 E   RMY 17 
5/4 48/41/45/-9/0.53/0.0/000/00             33 NE  AERO 35 NE  RMY 34
5/5 44/41/43/-11/0.30/0.0/000/00            39 NNE AERO 41 NNE RMY 39
5/6 54/43/49/-5/0.13/0.0/360/42             28 ENE AERO 29 N   RMY 26
5/7 51/43/47/-8/0.06/0.0/000/00             25 NE  AERO 25 NE  RMY 23
5/8 60/46/53/-2/0.10/0.0/284/33             47 W   AERO 53 W   RMY 49         
5/9 65/43/54/-1/0.00/0.0/743/86             40 W   AERO 44 W   RMY 40
5/10 69/40/55/0/0.00/0.0/806/93             22 W   AERO 25 WNW RMY 22
5/11 76/50/63/+7/0.00/0.0/808/93            22 WNW AERO 23 WNW*RMY 22
5/12 75/54/65/+9/0.00/0.0/819/94            23 NNE AERO 25 S   RMY 23
5/13 74/52/63/+7/0.21/0.0/079/09            27 S   AERO 27 S   RMY 26  
5/14 78/54/66/+9/0.00/0.0/656/75            35 SSW*AERO 40 SSW RMY 37
5/15 60/41/51/-6/0.00/0.0/588/67            50 W   AERO 54 W   RMY 49
5/16 58/38/48/-9/0.00/0.0/800/91            45 W*  AERO 51 WNW RMY 49
5/17 69/47/58/+1/0.00/0.0/344/39            32 W   AERO 38 W   RMY 38
5/18 64/48/56/-2/0.00/0.0/804/91            24 NE  AERO 26 NNW RMY N/A
5/19 66/49/58/0/0.26/0.0/.../..             23 WNW AERO 26 WNW RMY 25 
5/20 73/46/60/+2/0.00/0.0/.../..            20 SSE AERO 22 SSE RMY 21
5/21 74/53/64/+5/0.00/0.0/.../..            21 S   AERO 23 S   RMY 21    
5/22 64/53/59/0/T/0.0/.../..                26 ENE AERO 29 ENE RMY 26
5/23 74/51/63/+4/T/0.0/.../..               22 ENE AERO 31 ENE RMY N/A            
5/24 56/50/53/-6/0.12/0.0/.../..            30 ENE AERO 31 ENE RMY 29
5/25 86/51/69/+9/0.00/0.0/.../..            25 W   AERO 28 W   RMY 25
5/26 86/64/75/+15/0.00/0.0/.../..           21 SE  AERO 23 SE  RMY 21
5/27 81/60/71/+11/0.00/0.0/.../..           26 S   AERO 30 S   RMY 29
5/28 92/63/78/+17/0.00/0.0/.../..           22 SSW AERO 22 SSW RMY N/A 
5/29 72/51/62/+1/0.00/0.0/.../..            18 NE  AERO 20 NE  RMY 18
5/30 71/52/62/+1/0.94/0.0/.../..            25 SSW AERO 28 SSW RMY 27
5/31 84/67/76/+15/0.00/0.0/.../..           25 W   AERO 29 WSW RMY 28   

6/1 low temp since midnight is 63F; normal low now 53F

* Last of several occurrences
     
DAILY RECORDS FOR MAY 2016

5/1/16: DAILY RECORD SNOWFALL OF A TRACE,
        TIES PREVIOUS RECORDS SET IN 1905, 1917, 1921, and 1995

5/28/16: DAILY RECORD MAXIMUM TEMP. OF 92F, 
         PREVIOUS RECORD OF 90F SET IN 1914   


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

RECORDS FOR JUNE 1
HIGH 90F IN 1937,2013
LOW 36F IN 1945 [Record for month]
PRECIP 2.28 INS IN 1992
PEAK GUST 51e MPH SE IN 1952

RECORDS FOR JUNE 2
HIGH 91F IN 1895
LOW 41F IN 1907, 1929
PRECIP 2.36 INS IN 1982
SNOWFALL TRACE IN 1907 (IP)
PEAK GUST 63 MPH NW IN 2000

TODAY'S REPORT PREPARED BY: Cece Borries-Strigle/Robert Skilling