BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MAY 12, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
 
ABOVE-AVERAGE HEAT CONTINUES FOR ONE MORE DAY
 
Yesterday's maximum of 79F now takes the reigns as the warmest
day of the year so far, with today topping yesterday. Yesterday's
daily record maximum of 90F, set in 1993, was never in any real
jeopardy of being broken, while today's record of 88F, set in 2001,
will be monitored a bit more closely.
 
High cirrus fibratus have slowly filtered in, along with increasing
haze limiting visibility to 45 miles by 10:00 AM EST. By 1:00 PM EST
altocumulus, altocumulus lenticularis and cirrocumulus lenticularis
had formed in the skies above with a maximum of 84F reached so far.
 
Today's Observations:
 
7 A.M.
Weather: Scattered cirrus fibratus, few cirrostratus ESE-W,
few cirrocumulus overhead
Temperature: 67F; Dew Point: 39F; Wind: WNW at 9 kts
Sea-level pressure: 30.10 ins. Hg, rising, then more slowly 
Visibility: 55 miles, light distant haze all directions
6-hr max temp: 67F
6-hr min temp: 57F
24-hr precip: none
BHO SA 1155 250 SCT 55 194/67/39/3009/010/
FEW CS ESE-W FEW CC OVHD LGT DSNT HZ ALQDS/
8/001 51008 10067 20057
 
10 A.M.
Weather: Scattered cirrus fibratus, few cumulus distant
offshore NNE-ESE
Temperature: 77F; Dew Point: 40F; Wind: WSW at 7 kts
Wind Direction: Variable from SSW to W
Sea-level pressure: 30.09 ins. Hg, rising, then falling and lower
Visibility: 45 miles, distant haze in all directions
BHO SA 1455 250 SCT 45 191/77/40/2507/009/
FEW CU DSNT OFFSHR NNE-ESE DSNT HZ ALQDS WND 21V27/ 8/101 58003
 
1 P.M. 
Weather: Scattered altocumulus, scattered cirrus fibratus,
altocumulus lenticularis WSW-N, few cirrocumulus lenticularis
distant W-NW
Temperature: 83F; Dew Point: 40F; Wind: SW at 9 kts
Sea-level pressure: 30.04 ins. Hg, falling, then more quickly
Visibility: 45 miles, distant haze in all directions
6-hr max temp: 84F
6-hr min temp: 67F
BHO SA 1755 110 SCT 250 SCT 45 174/83/40/2309/004/
ACSL DSNT WSW-N FEW CCSL DSNT W-NW DSNT HZ ALQDS/
8/049 58017 10084 20067
 
WEATHER SUMMARY FOR SUNDAY, MAY 11, 2014
 
TEMPERATURE (DEGREES F)
MAX.....79    NORMAL.....65
MIN.....56    NORMAL.....46
MEAN....69    NORMAL.....56
 
DEPARTURE FROM 30-YEAR NORMAL.........................+13
TOTAL DEPARTURE FOR THE MONTH.........................+41 [+3.5 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY...............0  DEPARTURE.........-10
TOTAL HEATING UNITS FOR THE MONTH..............84  DEPARTURE.........-39     
TOTAL HEATING UNITS FOR THE SEASON...........6255  DEPARTURE.........+97     
TOTAL HEATING UNITS LAST SEASON TO DATE......5609  DIFFERENCE.......+646
 
COOLING DEGREE DAYS (SEASON JUN-OCT)
TOTAL COOLING UNITS FOR YESTERDAY..............4   DEPARTURE.........+4
TOTAL COOLING UNITS FOR THE MONTH..............7   DEPARTURE.........+7
TOTAL COOLING UNITS FOR THE SEASON.............7   DEPARTURE.........+7
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................30  W    AT   2:33 P.M. 
                   ASOS.......................32  W    AT   2:33 P.M.   
                   DAVIS......................34  WSW  AT   2:42 P.M. RMY 34
FASTEST MILE FOR YESTERDAY................... 24  W    AT   2:33 P.M.   
MAXIMUM 2-MINUTE ASOS AVERAGE.................24  W    AT   2:34 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE................24  WSW  AT   2:34 P.M. 
AVERAGE WIND SPEED AND DIRECTION..............14.4 W       
                   ASOS.......................14.9    
                   DAVIS......................12.4 W  [274 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.............-0.12
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........0.66  DEPARTURE.............-0.68      
                         ASOS..............0.65
TOTAL PRECIPITATION FOR THE YEAR..........19.78  DEPARTURE.............-0.11
                         ASOS.............20.18
 
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/..../0.0/332/39          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/.../..           21 WNW RMY 23
5/8  69/48/59/+4/0.00/0.0/.../..          17 SSW RMY 19
5/9  57/51/54/-1/..../0.0/000/00          21 S   RMY N/A 
5/10 78/57/68/+13/..../0.0/.../..         33 S   RMY 37
5/11 79/58/69/+13/..../0.0/.../..         30 W   RMY 34
 
5/12 morning low temp: 57F; the normal low is now 47F
 
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 12
HIGH 88F IN 2001
LOW 29F IN 1907
PRECIP 1.49 INCHES IN 1968
PEAK GUST 76 MPH S IN 1974
 
RECORDS FOR MAY 13
HIGH 85F IN 1947
LOW 35F IN 1914, 2005
PRECIP 2.39 INCHES IN 2006
PEAK GUST 49 MPH NNW IN 1965
 
TODAY'S REPORT PREPARED BY: Brian Fitzgerald