BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, MARCH 15, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
Today's observations:
 
7 A.M.
Weather: Scattered cirrus, few altocumulus, smoke layer along horizon
Temperature: 35F, Dew point: 24F, Wind: WSW at 11 kt
Sea-level pressure: 30.20 inches Hg, rising
Visibility: 15 miles, hazy
6-hour minimum temperature: 34F
BHO SA 1155 200 SCT 15 227/35/24/2411/020/
CLR W-E FEW AC SE K LYR ALNG HRZN S-NE/ 8/052 53007 10036 20034
 
10 A.M.
Weather: Scattered cirrus
Temperature: 50F, Dew point: 20F, Wind: WSW at 6 kt
Sea-level pressure: 30.21 inches Hg, rising
Visibility: 20 miles
BHO SA 1455 200 SCT 20 230/50/20/2506/021/
CLR W-E HAZY WND L/V/ 8/002 50003
 
1 P.M.  
Weather: Scattered cirrus
Temperature: 55F, Dew point: 18F, Wind: W at 4 kt
Sea-level pressure: 30.17 inches Hg, falling
Visibility: 35 miles, hazy
6-hour maximum temperature: 57F 
BHO SA 1755 200 SCT 35 217/55/18/2704/017/
CLR W-E WND L/V HAZY/ 8/002 58013 10057 20035
 
WEATHER SUMMARY FOR SATURDAY, MARCH 14, 2009
 
TEMPERATURE (DEGREES F)
MAX.....50    NORMAL.....44
MIN.....25    NORMAL.....27
MEAN....38    NORMAL.....36
 
DEPARTURE FROM 30-YEAR NORMAL..................+2
TOTAL DEPARTURE FOR THE MONTH.................-13 [-1.1 DEGREES/DAY] 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............27  DEPARTURE.........-2
TOTAL HEATING UNITS FOR THE MONTH............452  DEPARTURE........+11
TOTAL HEATING UNITS FOR THE SEASON..........4979  DEPARTURE........-32
TOTAL HEATING UNITS LAST SEASON TO DATE.....4642  DIFFERENCE......+337
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............24 SSW AT  2:56 P.M.
                   AEROVANE.............21 SSE AT  5:23 P.M. * 
                   ASOS.................23 SW  AT  2:57 P.M.  
                   DAVIS................23 SSW AT  3:56 P.M.   
FASTEST MILE FOR YESTERDAY..............18 SSE AT  4:56 P.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...........17 S   AT  4:57 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........19 SSW AT  4:57 P.M. 
                   AVERAGE............10.8 SSW
                   ASOS...............11.1
                   DAVIS..............10.5 SSW [202 DEGREES]
* Last of several occurrences....
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00 DEPARTURE.........-0.16
                         ASOS...............0.00
TOTAL PRECIPITATION FOR THE MONTH...........2.41 DEPARTURE.........+0.30
                         ASOS...............2.34
TOTAL PRECIPITATION FOR THE YEAR............8.94 DEPARTURE.........-2.01
                         ASOS...............9.96 #
# Includes erroneous ASOS precipitation data on 1/1/09, 1/2/09 and 2/27/09.
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0   DEPARTURE.........-0.4
TOTAL SNOWFALL FOR THE MONTH...............13.4   DEPARTURE.........+7.2
TOTAL SNOWFALL FOR THE SEASON..............78.7   DEPARTURE........+27.1
 
PRELIMINARY CLIMATE SUMMARY FOR MARCH 2009 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system gust when significant
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
3/1  28/21/25/-7/0.26/1.9/000/00     38 NNE
3/2  22/15/19/-13/1.21/8.2/000/00    40 NNE    AERO 37 MPH NNE
3/3  25/11/18/-14/0.01/0.1/640/94    33 NW
3/4  30/6/18/-14/0/0/684/100         31 WNW
3/5  39/16/28/-5/0/0/659/96          25 WSW
3/6  49/30/40/+7/T/0/.../..          43 S      AERO 41 MPH S
3/7  60/42/51/+18/0.06/0/.../..      37 S
3/8  57/42/50/+16/0/0/.../..         39 WNW    AERO 40 MPH WNW
3/9  42/28/35/+1/0.72/3.2/000/00     33 N
3/10 42/26/34/0/0.02/0/.../..        23 SSE
3/11 50/33/42/+7/0.13/0/000/00       51 W
3/12 39/25/32/-3/0/0/.../..          44 W      AERO 45 MPH W
3/13 37/19/28/-7/0/0/.../..          26 SSE
3/14 50/25/38/+2/0/0/.../..          24 SSW
 
 
NEW DAILY RECORDS FOR MARCH 2009...
3/2: DAILY SNOWFALL 8.2 INS. SURPASSES PREVIOUS
     RECORD OF 7.1 INS. IN 1948
3/7: DAILY MINIMUM 42 TIES RECORD HIGH MINIMUM FOR DATE
     PREVIOUSLY SET IN 1974 AND 1987
3/8: DAILY MINIMUM 42 TIES RECORD HIGH MINIMUM FOR DATE
     PREVIOUSLY SET IN 1995
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 15
HIGH 80 IN 1990
LOW 6 IN 1993
PRE 1.33 INS. IN 1972
SNOW 12.0 INS. 1967
WIND 73e MPH ESE IN 1940
 
RECORDS FOR MARCH 16
HIGH 73 IN 1990
LOW 8 IN 1932
PRE 1.95 INS. IN 1900
SNOW 10.0 INS. IN 1896
WIND 79 MPH NE IN 1956
 
TODAY'S REPORT PREPARED BY: Andrew Hoell