BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, APRIL 8, 2007 EASTER SUNDAY  
ALL TIMES ARE IN EASTERN STANDARD TIME
 
UNSEASONABLY COLD EARLY APRIL TEMPERATURES CONTINUE
PARTLY SUNNY TO MOSTLY CLOUDY, BREEZY AND COLD EASTER SUNDAY
APRIL TEMPERATURES AVERAGING MORE THAN 6 DEGREES ON 
THE COLD SIDE OF NORMAL 
FIRST WEEK OF APRIL--11 DEGREES COLDER THAN 1ST WEEK OF JANUARY!
 
Moderate cumulus and stratocumulus were forming rapidly this Easter Sunday
morning as the strong April sunshine started heating the cold air near 
the ground.  Temperatures are very cold just a few thousand feet
above ground level with near to slightly below zero F readings being
recorded on Mt. Washington this morning.     
Amazingly, the first week of April has averaged 11 degrees colder than
the first week of January this year. 
  
Today's observations:
 
7 A.M.   
Weather: High thin scattered cirrus
Temperature: 28F, Dew point: 13F, Wind: WSW at 12G21 kts 
Sea-level pressure: 29.72 inches Hg, rising
Visibility: 55 miles 
6-hour min. temp: 25F
BHO SA 1155 250 –SCT 300 –SCT 55 067/28/13/2512G21/972/ 
FEW CUFRA FRMG ENE-E AND CU FRMG DSNT W/ 8/100 51015 10028 20025  
 
10 A.M.
Weather: Broken stratocumulus clouds 
Temperature: 34F, Dew point: 12F, Wind: WSW at 18G24 kts
Peak wind: 26 kts WSW at 30 mins. past the hour
Sea-level pressure: 29.72 inches of Hg, falling 
Visibility: 60 miles, 45 W-NW   
BHO SA 1455 E50 BKN 60 064/34/12/2518G24/972/ VIRGA DSNT WSW-N 
VSBY W-NW 45 PK WND 2426/30/ 8/400 58003 
 
 
WEATHER SUMMARY FOR SATURDAY, APRIL 7
 
TEMPERATURE (DEGREES F)
MAX.....40    NORMAL.....52 
MIN.....26    NORMAL.....34
MEAN....33    NORMAL.....43
DEPARTURE FROM 30-YEAR NORMAL..........-10
TOTAL DEPARTURE FOR THE MONTH..........-43 (-6.3 DEGREES/DAY) 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........32   DEPARTURE........+10
TOTAL HEATING UNITS FOR THE MONTH.........202   DEPARTURE........+43 
TOTAL HEATING UNITS FOR THE SEASON.......5196   DEPARTURE.......-427
TOTAL HEATING UNITS LAST SEASON TO DATE..5081   DIFFERENCE......+115
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............35 W   AT 7:43 P.M.  
                   AEROVANE............ 34 W   AT 7:43 P.M.
                   ASOS.................32 W   AT 7:44 P.M. 
                   DAVIS................35 W   AT 7:42 P.M. 
FASTEST MILE FOR YESTERDAY..............25 W   AT 7:43 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...........24 W   AT 7:44 P.M. 
MAXIMUM 2-MINUTE DAVIS AVERAGE..........26 W   AT 7:44 P.M. 
AVERAGE WIND SPEED AND DIRECTION.......8.5 W
                    ASOS.............. 8.8 
                    DAVIS............. 8.4 W  [280 deg]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.....-0.15
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.90  DEPARTURE.....+0.85  
                         ASOS..............1.79    
TOTAL PRECIPITATION FOR THE YEAR..........13.64  DEPARTURE.....-1.04
                         ASOS.............13.43   
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.1
TOTAL SNOWFALL FOR THE MONTH................0.2  DEPARTURE......-0.6 
TOTAL SNOWFALL FOR THE SEASON..............27.6  DEPARTURE.....-30.1  
 
    
PRELIMINARY CLIMATE SUMMARY FOR APRIL 2007......CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOWFALL/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
4/1  59/33/46/+5/0.42/0/511/67       30 S
4/2  39/35/37/-5/0.33/0/000/00       27 E
4/3  41/32/37/-5/0.04/0/000/00       28 ENE
4/4  36/32/34/-8/0.90/0.2/000/00     38 E
4/5  43/26/35/-8/0.21/T/.../..       36 WSW
4/6  39/23/31/-12/0/0/.../..         36 WSW
4/7  40/26/33/-10/0/0/.../..         35 W
 
4/8  morning low temp. 25 deg; normal low now 35 deg.   
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR APRIL 8
HIGH 87 IN 1991
LOW  17 IN 1888
PRECIP 1.78 IN. IN 1956
SNOWFALL 9.3 IN. IN 1956
PEAK GUST 70 MPH S IN 2000
 
RECORDS FOR APRIL 9
HIGH 83 IN 1991
LOW 18 IN 1888
PRECIP 2.38 IN. IN 1935
SNOWFALL 11.0 IN. IN 1917
PEAK GUST 72 MPH WNW IN 1962
 
TODAY'S REPORT By: Robert Skilling