BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 2, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
 
HEAVY EARLY MARCH SNOWSTORM BRINGS 
A TOTAL OF 9 INCHES BEFORE ENDING
DURING MID-MORNING TODAY
 
Snow which began yesterday morning measured 0.9 inch
during the morning and then additional snowfall
began during the evening with heavy snow early this
morning bringing the 24-hour total ending at 7 a.m.
to 7.2 inches with an additional 2 inches falling
in the next 3 hours for a final total of 9.2 inches
for March 1-2.  
 
7 A.M.
Weather: Obscurement, heavy snow, thin fog 
Temperature: 19F, Dew point: 19F, Wind: NNW at 16G23 kts
Wind: peak gust to 26 kts from NNW at 6:30 a.m. 
Sea-level pressure: 30.19 inches Hg, falling
Visibility: 1/16 mile
6-hour minimum temperature: 19F
6-hour snowfall: n/a
Snow depth on ground: 7 inches 
Total new snow past 24 hrs. 7.2 ins. 
 
1 P.M.  
Weather: Overcast with stratus, very light snow grains
Temperature: 20F, Dew point: 18F, Wind: N at 12G21 kts
Wind: Peak gust 27 kts from N at 12:00 PM
Wind: Direction variable NW-NNE
Sea-level pressure: 29.80 inches Hg, rising
Visibility: 5 miles
6-hour maximum temperature: 21F
6-hour snowfall: 2.0 ins.
6-hour precip: N/A
BHO SA 1755 E12 OVC 5SG-F 090/20/18/3612G21/980/ PK WND 3527/00
WND 32V03 SBUKN PCPN VRY LGT TOTAL NEW SNW PST 6 HRS 2.0 INS/ 
8/6// 55012 ASOS 60029 MANUAL 6XXX/ 10021 20019
 
WEATHER SUMMARY FOR SUNDAY, MARCH 1, 2009
 
TEMPERATURE (DEGREES F)
MAX.....28    NORMAL.....40
MIN.....21    NORMAL.....24
MEAN....25    NORMAL.....32
 
DEPARTURE FROM 30-YEAR NORMAL.................-7
TOTAL DEPARTURE FOR THE MONTH.................-7 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............40  DEPARTURE.........+6
TOTAL HEATING UNITS FOR THE MONTH............ 40  DEPARTURE.........+6
TOTAL HEATING UNITS FOR THE SEASON..........4567  DEPARTURE........-37
TOTAL HEATING UNITS LAST SEASON TO DATE.....4284  DIFFERENCE......+283
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............38 NNE AT  9:26 A.M.                
                   AEROVANE.............32 WNW AT  9:02 A.M. *     
                   ASOS.................36 NNE AT  9:26 A.M.  
                   AEROVANE.............32 NNE AT  9:26 A.M.                     
                   DAVIS................33 NNE AT  9:26 A.M.
FASTEST MILE FOR YESTERDAY..............21 NNE AT  9:01 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE...........22 NE  AT  9:01 A.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE..........22 NNE AT  9:01 A.M.        
                   AVERAGE............13.3 N
                   ASOS...............12.7
                   DAVIS..............13.0 N [360 DEGREES]
  
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....1.16 DEPARTURE.........+1.01
                         ASOS...............0.99
TOTAL PRECIPITATION FOR THE MONTH...........1.16 DEPARTURE.........+1.01
                         ASOS...............0.99
TOTAL PRECIPITATION FOR THE YEAR............7.69 DEPARTURE.........-1.30
                         ASOS...............8.63 #
# 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..........7.2   DEPARTURE.........+6.7
TOTAL SNOWFALL FOR THE MONTH................7.2   DEPARTURE.........+6.7
TOTAL SNOWFALL FOR THE SEASON..............72.5   DEPARTURE........+26.6
 
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY 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
 
2/1  45/15/30/+4/0/0/402/67          35 SW
2/2  50/32/41/+15/0/0/568/94         29 NNW
2/3  33/22/28/+2/0.44/5.6/000/00     39 N    AERO 38 MPH N 
2/4  24/10/17/-9/0.05/0.9/572/94     37 WNW
2/5  17/3/10/-17/0/0/538/88          33 W
2/6  26/4/15/-12/0/0/509/83          26 W
2/7  42/16/29/+2/0/0/314/51          45 S    AERO 44 MPH S
2/8  49/30/40/+13/0/0/433/70         54 W    AERO 54 MPH W
2/9  37/21/29/+2/0/0/621/100         38 WNW  AERO 38 MPH WNW
2/10 36/22/29/+2/0/0/006/01          21 SSE
2/11 59/34/47/+20/0/0/482/77         29 SSE  
2/12 51/37/44/+16/0.13/0/063/10      54 WSW  AERO 54 MPH WSW
2/13 38/24/31/+3/0/429/68            47 W    AERO 47 MPH W
2/14 39/20/30/+2/0/0/595/94          42 W    AERO 40 MPH W
2/15 39/23/31/+3/0/0/637/100         30 NW   AERO 28 MPH NW
2/16 35/21/28/0/0/0/633/99           23 NW   
2/17 35/19/27/-2/0/0/641/100         21 NW 
2/18 41/24/33/+4/0.25/1.6/361/56     33 E    
2/19 46/24/35/+6/0.34/0.4/155/24     43 W    AERO 44 MPH W
2/20 27/18/23/-6/T/T/364/56          50 W    AERO 48 MPH W
2/21 37/23/30/+1/0/0/626/96          42 W    AERO 37 MPH W
2/22 41/28/35/+5/0.83/1.7/000/00     46 W    AERO 48 MPH W
2/23 31/18/25/-5/T/T/507/77          51 W    AERO 53 MPH W
2/24 34/15/25/-5/0/0/661/100         35 WNW  AERO 28 MPH WNW
2/25 37/17/27/-4/0/0/431/65          22 NW  
2/26 47/26/37/+6/0/0/.../..          31 S
2/27 58/34/46/+15/.../0/.../..       58 S    AERO 59 MPH S
2/28 49/28/39/+8/.../../.../..       33 WNW
 
3/1/ 28/21/25/-7/..../.../000/00     38 NNE
 
3/2  morning low temp. 19F; our normal low is now 24F
 
NEW DAILY RECORDS FOR FEBRUARY 2009...
 
None to date
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 2
HIGH 63 IN 2004
LOW -3 IN 1886
PRE 2.15 INS. IN 1983
SNOW 7.1 INS. IN 1948
WIND 75 MPH NW IN 1966
 
RECORDS FOR MARCH 3
HIGH 64 IN 1991
LOW -1 IN 1950
PRECIP 2.36 INS. IN 1972
SNOWFALL 12.8 INS. IN 1960
PEAK GUST 78e MPH E IN 1942
 
TODAY'S REPORT PREPARED By: Robert Skilling