BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, MARCH 13, 2008
ALL TIMES ARE IN EASTERN STANDARD TIME UNLESS NOTED
 
Today's observations:
 
8 A.M. EDT
Weather: Overcast cirrostratus, breaks distant N-NE and S
Temperature: 25F, Dew point: 10F, Wind: NW at 12G19 kts
Sea-level pressure: 30.00 inches Hg, rising
Visibility: 70 miles
6-hour min temp: 25F
24-hour rainfall: 0.26 in.
24-hour snowfall: 0.6 in.
BHO SA 1155 E250 OVC 70 158/25/10/3212G19/000/ BINOVC DSNT
N-NE AND S/ 8/007 51025 MANUAL 70026 ASOS 70026 10028 20025
  
11 A.M. EDT
Weather: Clear, few cirrus NW-N-E and distand SW-WNW
Temperature: 31F, Dew point: 3F, Wind: WNW at 5 kts
Wind: light and variable
Sea-level pressure: 30.03 inches Hg, rising
Visibility: 80 miles
BHO SA 1455 CLR 80 168/31/3/3005/003/ FEW CI NW-N-E AND
DSNT SW-WNW WND LGT AND VRB/ 8/001 50010
 
2 P.M. EDT 
Weather: Thin broken cirrus
Temperature: 38F, Dew point: 1F, Wind: SW at 7 kts
Wind: Variable in direction
Sea-level pressure: 29.98 inches Hg, falling
Visibility: 75 miles
6-hour max. temp: 38F
BHO SA 1755 250 –BKN 75 153/38/1/2307/998/ WND VRB/
8/001 58015 10038 20025
 
WEATHER SUMMARY FOR WEDNESDAY, MARCH 12
 
TEMPERATURE (DEGREES F)
MAX.....40    NORMAL.....43
MIN.....30    NORMAL.....27
MEAN....35    NORMAL.....35
DEPARTURE FROM 30-YEAR NORMAL............0
TOTAL DEPARTURE FOR THE MONTH..........+40 [+3.1 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............30  DEPARTURE.........0
TOTAL HEATING UNITS FOR THE MONTH...........340  DEPARTURE.......-44
TOTAL HEATING UNITS FOR THE SEASON.........4588  DEPARTURE......-364
TOTAL HEATING UNITS LAST SEASON TO DATE....4517  DIFFERENCE......+71 
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............41 WNW AT  5:38 P.M.   
                   AEROVANE.............41 WNW AT  5:38 P.M.   
                   ASOS.................38 NW  AT  5:39 P.M.  
                   DAVIS................42 WNW AT  5:38 P.M.   
FASTEST MILE FOR YESTERDAY..............28 WNW AT  5:34 P.M.  
MAXIMUM 2-MINUTE ASOS AVERAGE...........28 NW  AT  5:34 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..........31 WNW AT  5:34 P.M.   
AVERAGE WIND SPEED AND DIRECTION......14.8 WNW 
                   ASOS...............14.0   
                   DAVIS..............14.1 WSW [237 deg]  
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.26   DEPARTURE......+0.11 
                         ASOS..............0.26
TOTAL PRECIPITATION FOR THE MONTH..........3.80   DEPARTURE......+2.00
                         ASOS..............3.77 
TOTAL PRECIPITATION FOR THE YEAR..........15.84   DEPARTURE......+5.20
                         ASOS.............18.08 #
# Includes erroneous ASOS precipitation data on 2/13/08.
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.6   DEPARTURE.....+0.2
TOTAL SNOWFALL FOR THE MONTH................3.8   DEPARTURE.....-1.6
TOTAL SNOWFALL FOR THE SEASON..............63.9   DEPARTURE....+13.1 

PRELIMINARY CLIMATE SUMMARY FOR MARCH 2008 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available, records not finalized
 
3/1  37/20/29/-3/0.34/3.2/034/05   38 W     Aero 40 MPH W
3/2  37/23/30/-2/0/0/564/83        40 WNW
3/3  46/24/35/+3/0/0/327/48        42 S     Aero 43 MPH S
3/4  58/36/47/+14/0.41/0/089/13    42 S     Aero 43 MPH S
3/5  57/33/45/+12/0.31/0/199/29    45 S
3/6  46/27/37/+4/0/0/573/83        27 WSW
3/7  44/31/38/+5/0.28/0/395/57     29 NE
3/8  61/35/48/+14/2.20/0/000/00    69 SSW   Aero 70 MPH S
3/9  47/24/36/+2/0/0/698/100       65 W     Aero 65 MPH W
3/10 38/19/29/-5/0/0/687/98        31 W
3/11 42/19/31/-4/0/0/.../..        31 S
3/12 40/30/35/0/0.26/0.6/.../..    41 WNW
 
3/13 morning low temp. 25F; normal low is now 27F
 
NEW DAILY RECORDS FOR MARCH 2008
 
3/8 PEAK WIND GUST - 69 MPH SSW; PREVIOUSLY 68e MPH NE, 1941
 
3/8 NEW RECORD MAXIMUM DAILY RAINFALL of 2.20 inches;
the previous record was 1.73 inches in 1933.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 13
HIGH 72 IN 1990
LOW -1 IN 1885
PRECIP 2.47 INS. IN 1993
SNOWFALL 10.0 INS. IN 1993
PEAK GUST 76 MPH ENE IN 1993 [THE "STORM OF THE CENTURY"]
 
RECORDS FOR MARCH 14
HIGH 74 IN 1946
LOW 8 IN 1926
PRECIP 1.72 INS. IN 1984
SNOWFALL 6.7 INS. IN 1958
PEAK GUST 66 MPH WNW IN 1982
 
TODAY'S REPORT PREPARED By: Stephanie Radner