BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MAY 26, 2014 MEMORIAL DAY
ALL TIMES ARE IN EASTERN STANDARD TIME
 
PERSISTENT CLOUDS AND SOME LIGHT SHOWERS
HOLD TEMPERATURES TO THE LOW TO MID-70'S
 
Light showers since 7 to 8 A.M. EDT this morning left
0.03 inch and another 0.02 in. fell a little later.
Very little sunshine has been recorded preventing any
significant temperature rise. 
 
Today's Observations:
 
7 A.M.
Weather: Overcast altostratus, altocumulus, bright sky NNE-E,
bright spots in overcast, virga/showers of rain vicinity of
station E-SSW, virga distant NW-N, light rain shower began
6:15 A.M. ended 6:50 A.M. 
Temperature: 56F; Dew Point: 53F; Wind: WSW at 12 kts
Sea-level pressure: 29.99 ins. Hg, rising    
Visibility: 35 miles, except 50 miles NE, 20 miles SE-S,
45 miles WNW, rain showers ESE-SSW
6-hr max temp: 58F
6-hr min temp: 52F
6-hr precip: 0.03 in.
24-hr precip: 0.03 in. 
BHO SA 1155 E65 OVC 35 154/56/53/2412/999/ BRGHT SKY NNE-E
BRGHT SPTS IOVC IRGA/SHRA VC E-SSW VIRGA DSNT NW-N
VSBY NE 50 SE-S 20 WNW 45 RB15E50/ 8/07/ 53005 ASOS 60002
MANUAL 6002/ ASOS 70002 MANUAL 70003 10058 20052
 
10 A.M.
Weather: Broken altocumulus, overcast cirrus/dense cirrus,
thin spots and small break in overcast overhead-W-NW
Temperature: 64F; Dew Point: 57F; Wind: WSW at 12 kts
Sea-level pressure: 29.93 ins. Hg, falling
Visibility: 25 miles, hazy
3-hr precip: 0.02 in.
BHO SA 1455 E100 BKN 200 OVC 25 137/64/57/2512/993/
DRK DSNT NE-SE THN SPTS/SML BINOVC OVHD-W-NW HAZY/
8/072 58017 ASOS 60002 MANUAL 6002/ 
 
1 P.M. 
Weather: Broken broken altocumulus, overcast altocumulus,
bright spots in overcast, light rain showers, very light 
Temperature: 69F; Dew Point: 56F; Wind: W at 14 kts,
Sea-level pressure: 29.90 ins. Hg, falling then more slowly 
Visibility: 35 miles, light distant haze 
6-hr max temp: 74F 
6-hr min temp: 56F
6-hr precip: 0.02
BHO SA 1755 E95 BKN 120 OVC 35RW- 125/69/56/2714/990/ BRGHT SPTS IOVC
PCPN VRY LGT/ 8/07/ 56012 ASOS 60002 MANUAL 60002 10074 20056 
 
WEATHER SUMMARY FOR SUNDAY, MAY 25, 2014
 
TEMPERATURE (DEGREES F)
MAX.....71    NORMAL.....69
MIN.....49    NORMAL.....51
MEAN....60    NORMAL.....60
 
DEPARTURE FROM 30-YEAR NORMAL...........................0
TOTAL DEPARTURE FOR THE MONTH.........................+76* [+2.8 DEGREES/DAY]*
 
* corrected from yesterday's report......
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............5  DEPARTURE..........-1
TOTAL HEATING UNITS FOR THE MONTH.............165  DEPARTURE.........-69     
TOTAL HEATING UNITS FOR THE SEASON...........6336  DEPARTURE.........+67     
TOTAL HEATING UNITS LAST SEASON TO DATE......5707  DIFFERENCE.......+629
 
COOLING DEGREE DAYS (SEASON JAN-DEC)
TOTAL COOLING UNITS FOR YESTERDAY..............0   DEPARTURE..........-1
TOTAL COOLING UNITS FOR THE MONTH.............13   DEPARTURE..........-1
TOTAL COOLING UNITS FOR THE SEASON............13   DEPARTURE..........-3
TOTAL COOLING UNITS LAST SEASON TO DATE........6   DIFFERENCE.........+7
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................20  S    AT   5:12 P.M.    
                   ASOS.......................23  S    AT   5:07 P.M.      
                   DAVIS......................22  SSW  AT   5:05 P.M. RMY N/A
FASTEST MILE FOR YESTERDAY....................18  SSW  AT   5:07 P.M.   
MAXIMUM 2-MINUTE ASOS AVERAGE.................18  SSW  AT   5:07 P.M.    
MAXIMUM 2-MINUTE DAVIS AVERAGE................17  SSW  AT   5:06 P.M.  
AVERAGE WIND SPEED AND DIRECTION............. 6.4 S        
                   ASOS.......................7.1   
                   DAVIS......................5.6 S [190 deg]
* Last of several occurrences...
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.03  DEPARTURE.............-0.13
                         ASOS..............0.02
TOTAL PRECIPITATION FOR THE MONTH..........2.44  DEPARTURE.............-0.77      
                         ASOS..............2.43
TOTAL PRECIPITATION FOR THE YEAR..........21.56  DEPARTURE.............-0.20
                         ASOS.............21.96
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE...............0.0
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE...............0.0
TOTAL SNOWFALL FOR THE SEASON..............85.6  DEPARTURE.............+22.9
 
PRELIMINARY CLIMATE SUMMARY FOR MAY 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/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
 
5/1  64/43/54/+1/0.49/0.0/093/11          32 SSE RMY 36
5/2  68/51/60/+7/T/0.0/457/54             28 W   RMY 29
5/3  66/48/57/+4/0.00/0.0/332/39          21 SW  RMY N/A 
5/4  60/47/54/0/0.01/0.0/400/47           51 WNW RMY 54
5/5  64/46/55/+1/T/0.0/592/70             30 NW  RMY 32
5/6  63/42/53/-1/T/0.0/506/59             30 NW  RMY 30
5/7  64/42/55/0/0.00/0.0/850/99           21 WNW RMY 23
5/8  69/48/59/+4/0.00/0.0/612/71          17 SSW RMY 19
5/9  57/51/54/-1/0.05/0.0/000/00          21 S   RMY N/A 
5/10 78/57/68/+13/0.10/0.0/043/05         33 S   RMY 37
5/11 79/58/69/+13/0.01/0.0/746/86         30 W   RMY N/A
5/12 85/49/67/+11/0.00/0.0/792/91         39 NE  RMY 42
5/13 54/42/48/-8/0.00/0.0/113/13          32 NE  RMY N/A
5/14 73/42/58/+1/T/ 0.0/613/70            22 S   RMY 24
5/15 77/57/67/+10/T/0.0/140/16            27 S   RMY 33
5/16 73/60/67/+10/0.26/0.0/026/03         36 S   RMY 41
5/17 74/52/63/+6/1.04/0.0/555/63          36 SSE RMY N/A
5/18 67/47/57/-1/0.00/0.0/521/59          20 NW  RMY N/A
5/19 65/48/56/-2/0.12/0.0/443/50          35 NNW RMY 38
5/20 71/48/60/+2/T/0.0/771/89             25 NNW RMY 26
5/21 71/51/61/+2/0.00/0.0/.../..          18 ESE RMY 20
5/22 67/51/59/0/..../0.0/.../..           15 SSE RMY 18
5/23 60/49/55/-4/..../0.0/.../..          16 NE  RMY 18 
5/24 65/49/57/-2/..../0.0/.../..          17 ENE RMY 18
5/25 71/49/60/0/0.00/0.0/.../..           20 S   RMY N/A
 
5/26 morning low temp: 52F; the normal low is now 51F
 
DAILY RECORDS FOR MAY 2014
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):    
 
RECORDS FOR MAY 26
HIGH 94F IN 2010  (RECORD FOR MAY)
LOW 37F IN 1972,2013
PRECIP 1.73 INS IN 2003
SNOWFALL TRACE IN 1967 (Fell as ice pellets in nor'easter)
PEAK GUST 62 MPH NE IN 1967
 
RECORDS FOR MAY 27
HIGH 92F IN 1914
LOW 36F IN 1915
PRECIP 1.40 INS IN 1898
PEAK GUST 55 S IN 1956
 
TODAY'S REPORT PREPARED BY: Robert Skilling