BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
  
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, NOVEMBER 13, 2007 
ALL TIMES ARE IN EASTERN STANDARD TIME
 
OVERNIGHT RAINFALL INTO THIS MORNING TOTALS 0.35 INCH
AFTERNOON TEMPERATURES RISE INTO THE 50'S
 
Rain showers, which began a little before midnight 
last night, ended just after 9 a.m.  There were several
hours early this morning when there was no rain falling
and thus the precipitation was quite showery. 
Our total rainfall for the month is now almost two and 
one quarter inches or about a quarter of an inch more
than normal.  
 
After many colder than normal days in a row, today became
the first significantly mild day since November 1st and 5th. 
 
Today's observations:
 
7 A.M.   
Weather: Obscurement with heavy fog, light rain occurring 
Temperature: 46F, Dew point: 46F, Wind: SW at 10 kts 
Sea-level pressure: 29.89 inches Hg, steady
Visibility: 1/16 to 1/8 mile 
6-hour min temp: 43F
24-hour rainfall: 0.29 inch
BHO SA 1155 W2 X 1/8VR-F 121/46/46/2210/989/ VSBY 1/16V1/8 
PCPN VRY LGT/ 8//// 53001 MANUAL 6026/ ASOS 60027 10047 20043
  
10 A.M.   
Weather: Scattered stratocumulus, overcast altostratus,
Light fog, stratus drifting over and below summit    
Temperature: 48F, Dew point: 47F, Wind: WSW at 13 kts
Sea-level pressure: 29.91 inches Hg, rising  
Visibility: 2 miles, variable 1.5 to 4 miles, increasing   
BHO SA 1455 32 SCT E130 OVC 2VF 129/48/47/2413/991/ 
FEW STFRA DRFTG OVR/BLO SMT DSSPTNG SUN DMLY VSB 
VSBY 11/2V4 INCRSNG RE10/ 8/52/ 51008 ASOS 60006 MANUAL 6006/ 
 
1 P.M.   
Weather: Scattered stratocumulus and cirrus clouds   
Temperature: 53F, Dew point: 45F, Wind: WNW at 10 kts
Wind: gust 20 kts past hour 
Sea-level pressure: 29.91 inches Hg, rising 
Visibility: 30 to 40 miles, light haze  
BHO SA 1755 25 SCT 220 SCT 30 127/53/45/2910/991/ SC MDT CUFRM TOPS
CI/DENS CI SE-SW VSBY WNW 40 LGT HZ ALQDS GST 20 KTS PST HR/ 
8/502 55002 ASOS 60006 MANUAL 6006/ 10053 20046 
 
WEATHER SUMMARY FOR MONDAY, NOVEMBER 12, VETERANS DAY HOLIDAY
 
TEMPERATURE (DEGREES F)
MAX.....42    NORMAL.....51 
MIN.....27    NORMAL.....35
MEAN....35    NORMAL.....43
DEPARTURE FROM 30-YEAR NORMAL..........- 8 
TOTAL DEPARTURE FOR THE MONTH..........-41 [-3.6 DEGREES/DAY]
 
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY............32  DEPARTURE......+ 8
TOTAL HEATING UNITS FOR THE MONTH...........283  DEPARTURE......+22
TOTAL HEATING UNITS FOR THE SEASON..........629  DEPARTURE.....-205
TOTAL HEATING UNITS LAST SEASON TO DATE.....732  DIFFERENCE....-103
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............25 SSE AT 11:52 P.M.  
                   AEROVANE.............25 SSE AT 11:52 P.M. 
                   ASOS.................24 SSE AT 11:52 P.M.  
                   DAVIS................27 SSE AT 11:51 P.M.  
FASTEST MILE FOR YESTERDAY..............20 SSE AT 11:46 P.M.    
MAXIMUM 2-MINUTE ASOS AVERAGE...........20 SSE AT 11:55 P.M.  
MAXIMUM 2-MINUTE DAVIS AVERAGE..........21 SSE AT 11:41 P.M.  
AVERAGE WIND SPEED AND DIRECTION........9.1 NW 
                   ASOS.................9.3 
                   DAVIS................9.1 SW [230 deg]   
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.29  DEPARTURE....+0.13
                         ASOS..............0.30 
TOTAL PRECIPITATION FOR THE MONTH..........2.13  DEPARTURE....+0.29 
                         ASOS..............1.84  
TOTAL PRECIPITATION FOR THE YEAR..........37.67  DEPARTURE....-6.19
                         ASOS.............36.97  
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE.....-0.1
TOTAL SNOWFALL FOR THE MONTH................0.0  DEPARTURE.....-0.9
TOTAL SNOWFALL FOR THE SEASON...............0.0  DEPARTURE.....-1.1
 
PRELIMINARY CLIMATE SUMMARY FOR NOVEMBER 2007...CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
 
AERO: Aerovane recording wind system when significant
TSTM: Thunderstorm day
....: Data not yet available
 
11/1  66/42/54/+7/0/050/08     37 S
11/2  50/37/44/-2/0/446/73     29 NE
11/3  46/40/43/-3/0.95/000/00  51 N   Aero 50 MPH NNW  
11/4  54/37/46/0/0/503/82      33 W   Aero 33 MPH W    
11/5  56/40/48/+3/0/483/79     29 SE
11/6  53/37/45/0/0.75/000/00   35 SSE Aero 35 MPH SSE  
11/7  50/32/41/-4/0/.../..     30 W 
11/8  43/28/36/-8/0/.../..     22 W
11/9  44/32/38/-6/.../.../..   21 NNE
11/10 39/28/34/-10/.../.../..  32 N
11/11 42/24/33/-10/0/.../..    23 WNW
11/12 42/27/35/-8/0.02/.../..  25 SSE
 
11/13 morning low 42F; normal low is now 35F 
      overnight rainfall through 7 a.m. 0.29 inch
 
NEW DAILY RECORDS FOR NOVEMBER 2007: NONE
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR NOVEMBER 13
HIGH 66 IN 1931, 1964
LOW 14 IN 1920
PRECIP 1.96 IN 1982
SNOWFALL 4.6 IN 2004
PEAK GUST 77 S IN 1982
 
RECORDS FOR NOVEMBER 14
HIGH 70 IN 1993
LOW 11 IN 1905
PRECIP 1.87 IN 1972
SNOWFALL 3.5 IN 1997
PEAK GUST 63 W IN 2003
 
TODAY'S REPORT PREPARED By: Robert Skilling