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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, APRIL 11, 2016 
ALL TIMES ARE IN EASTERN STANDARD TIME

BRIEF PERIOD OF ICE PELLETS, TEMPERATURES 
RISE TO MID-50s, WINDY AFTERNOON 

A trace of frozen precipitation fell this morning
along with 0.01 inches of precipitation by this morning's
7:00AM EST observation.  Temperatures rose to near-normal 
temperatures with a max of 56F by the 1:00PM EST observation.
Wind speeds started increasing late morning gusting to
38 knots from the South by the 1:00PM EST observation.


BHO Snowiest Aprils, inches (1886-2016):

1) 24.2 in 1996
2) 21.5 in 1894
3) 19.0 in 1887
4) 16.2 in 1916
5) 15.4 in 1907
6) 15.1 in 1997
7) 15.0 in 2016 (thru 4/9)
8) 14.0 in 1982
9) 13.5 in 1987
10) 12.2 in 1917

Today's Observations:

7 A.M.
Weather: Broken altocumulus, overcast altostratus, light rain,
distant showers, thin fog in all directions 
Temperature: 41F; Dew Point: 33F; Wind: S at 16G24 kts,
Sea-level pressure: 30.27 ins. Hg, rising, then falling
Visibility: 30 miles, 20 miles W
6-hr Max temp: 49F 
6-hr Min temp: 26F
24-hr precip: 0.01 ins. 
BHO SA 1155 E50 BKN 65 OVC 30R- 252/41/33/1816G24/027/ 
IP-BUKNEUKN VSBY W 20 MI SHWRS DSNT W THN FG ALQDS/ 
8/02/ 50030 MANUAL 70001 10049 20026

10 A.M.
Weather: Scattered altocumulus lenticularis, broken 
altocumulus, broken altostratus
Temperature: 50F; Dew Point: 32F; Wind: S at 19G29 kts
Sea-level pressure: 30.20 ins. Hg, falling, then more quickly
Visibility: 35 miles, hazy
3-hr Precip: Trace
BHO SA 1455 55 SCT E110 BKN 140 BKN 35 228/50/32/1819G29/020/
ACSL ALQDS HAZY/ 8/040 58024 MANUAL 6////

1 P.M.
Weather: Few cumulus ESE-s, broken altocumulus lenticularis, 
broken cirrostratus
Temperature: 56F; Dew Point: 34F; Wind: S at 25G38kts
Peak Wind: SSW 38 knots at 12:52PM EST
Sea-level Pressure: 30.14 ins. HG, falling, then more slowly
Visibility: 30 miles, hazy
6-hr Max temp: 56F
6-hr Min temp: 41F
6-hr Precip: Trace
BHO SA 1755 E140 BKN 250 BKN 30 208/56/34/1925G38/014/ 
ACSL ALQDS FEW CU DSNT ESE-S HAZY PK WND 213852/ 8/149 
56020 MANUAL 6//// 10056 20041 
 
SUMMARY FOR SUNDAY, APRIL 10, 2016 
  
TEMPERATURE (DEGREES F)
MAX.....49   NORMAL.....53
MIN.....26   NORMAL.....36 
MEAN....38   NORMAL.....45

DEPARTURE FROM 30-YEAR NORMAL.........................-7
TOTAL DEPARTURE FOR THE MONTH........................-39 [-4.1 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............27   DEPARTURE..........+7
TOTAL HEATING UNITS FOR THE MONTH.............261   DEPARTURE.........+39
TOTAL HEATING UNITS FOR THE SEASON...........4680   DEPARTURE.......-1026
TOTAL HEATING UNITS LAST SEASON TO DATE......5989   DIFFERENCE......-1309

PEAK GUST AND AVERAGE WIND SPEED (MPH) 
PEAK WIND GUST FOR YESTERDAY...................30 NW  AT 12:47 A.M. 
                   ASOS........................30 NW  AT 12:47 A.M.    
                   DAVIS.......................27 WNW AT  1:41 A.M. RMY 31
FASTEST MILE FOR YESTERDAY.....................19 NW  AT 12:55 A.M.      
MAXIMUM 2-MINUTE ASOS AVERAGE..................21 WNW AT 12:58 A.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE.................19 WSW AT  3:18 P.M.   
AVERAGE WIND SPEED AND DIRECTION...............11.8 NW 
                   ASOS........................11.7    
                   DAVIS.......................10.2 W [280 Deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.01  DEPARTURE......-0.17
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........3.24  DEPARTURE......+1.54
                         ASOS..............3.53
TOTAL PRECIPITATION FOR THE YEAR..........15.82  DEPARTURE......+0.12 
                         ASOS.............16.54

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)  
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.......-0.1
TOTAL SNOWFALL FOR THE MONTH...............15.0  DEPARTURE......+13.4
TOTAL SNOWFALL FOR THE SEASON..............57.5  DEPARTURE.......-4.3

PRELIMINARY CLIMATE SUMMARY FOR APRIL 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)
3....: Data not yet available, records not finalized

4/1   66/54/60/+19/..../0.0/.../..          39 SSW AERO N/A    RMY 43
4/2   54/40/47/+6/..../0.0/.../..           23 SSW AERO N/A    RMY N/A        
4/3   40/23/32/-10/..../7.7/.../..          46 W   AERO N/A    RMY 55
4/4   28/21/25/-17/0.68/7.3/000/00          29 NNE AERO N/A    RMY 25
4/5   35/19/27/-16/0.00/0.0/.../..          25 NW  AERO N/A    RMY 27
4/6   41/21/31/-12/..../0.0/.../..          44 S   AERO N/A    RMY N/A   
4/7   56/41/49/+6/..../0.0/000/00           53 SSE AERO 59 SSE RMY 55
4/8   52/32/42/-2/T/0.0/.../..              41 WSW AERO 45 WSW RMY 42
4/9   47/29/38/-6/0.00/0.0/.../..           33 NW  AERO 39 NW  RMY 32
4/10  49/26/38/-7/0.01/.../..               30 NW  AERO 32 NW  RMY 31

4/11  low temp since midnight is 40F; normal now 35F

DAILY RECORDS FOR APRIL 2016

4/1/16: NEW DAILY RECORD HIGH MINIMUM TEMPERATURE OF 54F,
BREAKS PREVIOUS RECORD OF 51F SET IN 1948

4/4/16: NEW DAILY RECORD SNOWFALL OF 7.3 INS, 
BREAKS PREVIOUS RECORD OF 3.7 INS SET IN 1975

4/4/16: NEW DAILY RECORD LOW MAXIMUM TEMPERATURE OF 28F,
BREAKS PREVIOUS RECORD OF 32F SET AND TIED IN 1896, 1908, 1975

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

RECORDS FOR APRIL 11
HIGH 78 IN 1945
LOW 19 IN 1909
PRECIP 1.72 IN. IN 2003
SNOWFALL 9.5 IN. IN 1958
PEAK GUST 65 MPH NW IN 1963

RECORDS FOR APRIL 12
HIGH 82 IN 1945
LOW 17 IN 1926
PRECIP 1.51 IN. IN 1993
SNOWFALL 12.0 IN. IN 1894
PEAK GUST 65e MPH W IN 1978

TODAY'S REPORT PREPARED BY: Brian Fitzgerald/Cece Strigle