BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA

DAILY DISCUSSION AND CLIMATE SUMMARY
SATURDAY, MARCH 10, 2007  
ALL TIMES ARE IN EASTERN STANDARD TIME

WARMER TEMPERATURES RETURNING TODAY ON INCREASING
SOUTHERLY WINDS...
A mostly sunny sky this morning has become cloudy as
warmer and moister air moves into New England today.
The high temperature so far has been 48 deg F, the 
highest since last Saturday.  Dew points are about 
40 deg F higher than yesterday. The peak gust for 
the day has been 37 mph S at 1:12 PM.  The average
temperature for March has dropped to more than seven
degrees colder than normal for the first nine days. 

DAYLIGHT SAVING TIME RETURNS TOMORROW...TURN CLOCKS 
AHEAD ONE HOUR TONIGHT...

Today's observations:

7 A.M.   
Weather: Thin broken cirrus
Temperature: 26F, Dew point: 24F, Wind: SSE at 18 kts 
Sea-level pressure: 30.34 inches Hg, falling
Visibility: 20 miles 
6-hour min. temp. 22 deg. 
BHO SA 1155 250 –BKN 20 274/26/24/1618/034/ FEW LWR CI/ 
8/001 56007 10026 20022

10 A.M.   
Weather: Thin broken cirrus
Temperature: 42F, Dew point: 29F, Wind: S at 16G26 kts 
Sea-level pressure: 30.32 inches Hg, falling
Visibility: 35 miles  
BHO SA 1455 250 –BKN 35 267/42/29/1816G26/032/ FEW LWR CI 
FEW CU DSNT SE-W PK WND 1828/02/ 8/101 58007

1 P.M.   
Weather: Broken stratocumulus and overcast cirrus
Temperature: 48F, Dew point: 38F, Wind: S at 15G27 kts 
Sea-level pressure: 30.24 inches Hg, falling
Visibility: 30 miles 
6-hour max. temp. 48 deg.
BHO SA 1755 E40 BKN 250 OVC 30 240/48/38/1715G27/024/ 
BINOVC ALQDS SUN OCNLY DMLY VSBL HAZY PK WND 1830/28/ 
8/501 58027 10048 20026


WEATHER SUMMARY FOR FRIDAY, MARCH 9

TEMPERATURE (DEGREES F)
MAX.....34    NORMAL.....43 
MIN......1    NORMAL.....26
MEAN....18    NORMAL.....34																					

DEPARTURE FROM 30-YEAR NORMAL.........-16
TOTAL DEPARTURE FOR THE MONTH.........-63 (-7.2 DEGREES/DAY) 
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY..........47   DEPARTURE.......+16
TOTAL HEATING UNITS FOR THE MONTH.........352   DEPARTURE.......+61 
TOTAL HEATING UNITS FOR THE SEASON.......4443   DEPARTURE......-418
TOTAL HEATING UNITS LAST SEASON TO DATE..4414   DIFFERENCE......+29
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............25 S   AT  9:27 P.M.       
                   AEROVANE.............23 SSW AT 10:15 P.M.       
                   ASOS.................23 S   AT  9:28 P.M.        
                   DAVIS................27 SSW AT 10:06 P.M.        
FASTEST MILE FOR YESTERDAY..............18 S   AT 10:12 P.M.       
MAXIMUM 2-MINUTE ASOS AVERAGE...........18 S   AT 10:17 P.M.  
MAXIMUM 1-MINUTE DAVIS AVERAGE..........20 S   AT 10:09 P.M.  
AVERAGE WIND SPEED AND DIRECTION......10.6 WNW  
                    ASOS..............10.5      
                    DAVIS.............10.2 SW  [231 deg]  
* last of several occurrences...

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..........1.74  DEPARTURE.....+0.24  
                         ASOS..............1.75    
TOTAL PRECIPITATION FOR THE YEAR...........7.46  DEPARTURE.....-2.88 
                         ASOS..............7.38 

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE......-0.4
TOTAL SNOWFALL FOR THE MONTH................0.4  DEPARTURE......-3.8  
TOTAL SNOWFALL FOR THE SEASON..............14.3  DEPARTURE.....-35.3  

    
PRELIMINARY CLIMATE SUMMARY FOR MARCH 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

3/1  40/22/31/-1/0/0/512/76          24 NW   Aero 23 MPH NW
3/2  49/28/39/+7/1.74/0.4/000/00     48 E    Aero 45 MPH E
3/3  58/33/46/+14/0/0/489/72         44 WNW  Aero 43 MPH WNW
3/4  40/26/33/0/0/0/471/69           37 W
3/5  37/19/28/-5/T/T/198/29          58 W    Aero 57 MPH W 
3/6  19/3/11/-22/0/0/667/97 *        57 W    Aero 61 MPH W
3/7  22/2/12/-21/0/0/504/73          28 SW   Aero 26 MPH SW
3/8  25/5/15/-19/T/T/471/68          51 WNW  Aero 54 MPH WNW
3/9  34/1/18/-16/0/0/.../.. *        25 S    Aero 23 MPH SSW

3/10 morning low temp. of 22 deg; normal low now 26 deg.

* Record low maximum temperature of 19 on the 6th surpasses previous 21 set
in 1916.
* Record low minimum temperature of 3 on the 6th ties previous 3 set in 1948.
* Record low minimum temperature of 1 on the 9th breaks previous 5 set in
1885, 1943, and 1996.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR MARCH 10
HIGH 69 IN 1977
LOW   2 IN 1984
PRECIP 2.00 INS. IN 1994
SNOWFALL 4.0 INS. IN 1997
PEAK GUST 80 MPH NW IN 1974

RECORDS FOR MARCH 11
HIGH 65 IN 1967
LOW   4 IN 1939, 1960
PRECIP 2.11 INS. IN 1901
SNOWFALL 6.3 INS. IN 1934
PEAK GUST 66e MPH W IN 1980

TODAY'S REPORT By: Mike Iacono

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