BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS 02186
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 15, 2009
ALL TIMES ARE IN EASTERN STANDARD TIME
Today's observations:
7 A.M.
Weather: Clear with a few cirrus
Temperature: 23F, Dew point: 11F, Wind: WNW at 15G20 kt
Sea-level pressure: 29.91 inches Hg, rising
Visibility: 80 miles
6-hour minimum temperature: 23F
Snow depth on ground: Trace
BHO SA 1155 CLR 80 129/23/11/2915G20/991/
FEW CI E-SW/ 8/001 51017 10028 20023
10 A.M.
Weather: Clear with a few cirrus
Temperature: 30F, Dew point: 13F, Wind: WNW at 16G32 kt
Sea-level pressure: 29.95 inches Hg, rising
Visibility: 80 miles
BHO SA 1455 CLR 80 142/30/13/3016G32/995/
FEW CI SE-SW AND NE/ 8/001 51013
1 P.M.
Weather: Clear with a few cirrus and stratocumulus
Temperature: 37F, Dew point: 16F, Wind: WNW at 13G19 kt
Sea-level pressure: 29.96 inches Hg, steady
Visibility: 80 miles
6-hour maximum temperature: 37F
BHO SA 1755 CLR 80 146/37/16/2913G19/996/
FEW SC FRMG S AND W AND NE FEW THN CI S/ 8/001 50004 10037 20023
WEATHER SUMMARY FOR SATURDAY, FEBRUARY 14
TEMPERATURE (DEGREES F)
MAX.....39 NORMAL.....36
MIN.....20 NORMAL.....20
MEAN....30 NORMAL.....28
DEPARTURE FROM 30-YEAR NORMAL.................+2
TOTAL DEPARTURE FOR THE MONTH................+43 [+2.8 DEGREES/DAY]
HEATING DEGREE DAYS
TOTAL HEATING UNITS FOR YESTERDAY.............35 DEPARTURE.........-2
TOTAL HEATING UNITS FOR THE MONTH............490 DEPARTURE........-46
TOTAL HEATING UNITS FOR THE SEASON..........4058 DEPARTURE........-14
TOTAL HEATING UNITS LAST SEASON TO DATE.....3699 DIFFERENCE......+359
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY............42 W AT 1:19 P.M.
AEROVANE.............40 W AT 1:30 P.M.
ASOS.................40 W AT 1:31 P.M.
DAVIS................38 W AT 1:19 P.M.
FASTEST MILE FOR YESTERDAY..............32 W AT 1:25 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE...........30 WNW AT 1:20 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE..........29 W AT 1:20 P.M.
AVERAGE............18.2 W
ASOS...............17.2
DAVIS..............16.6 W [267 DEGREES]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M.....0.00 DEPARTURE.........-0.14
ASOS...............0.00
TOTAL PRECIPITATION FOR THE MONTH...........0.62 DEPARTURE.........-1.41
ASOS...............0.62
TOTAL PRECIPITATION FOR THE YEAR............4.78 DEPARTURE.........-2.03
ASOS...............5.82 #
# Includes erroneous ASOS precipitation data on 1/1/09 and 1/2/09
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0 DEPARTURE.........-0.6
TOTAL SNOWFALL FOR THE MONTH................6.5 DEPARTURE.........-2.4
TOTAL SNOWFALL FOR THE SEASON..............61.6 DEPARTURE........+23.3
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/.../.. 21 SSE
2/11 59/34/47/+20/0/0/.../.. 29 SSE AERO 24 MPH SSE
2/12 51/37/44/+16/0.13/0/.../.. 54 WSW
2/13 38/24/31/+3/0/.../.. 47 W AERO 47 MPH W
2/14 39/20/30/+2/0/0/.../.. 42 W AERO 40 MPH W
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 FEBRUARY 15
HIGH 60F IN 1954
LOW -18F IN 1943
PRECIP 1.28 INCHES IN 1950
SNOWFALL 11.2 INCHES IN 1940
PEAK GUST 94e MPH WNW IN 1946
RECORDS FOR FEBRUARY 16
HIGH 62F IN 1954
LOW -16F IN 1943
PRECIP 1.91 INCHES IN 1958
SNOWFALL 18.6 INCHES IN 1958
PEAK GUST 78 MPH W IN 1967
TODAY'S REPORT PREPARED By: Andrew Hoell