Friday, February 10, 2017

| February 10, 2017 | Reply

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, FEBRUARY 10, 2017
ALL TIMES ARE IN EASTERN STANDARD TIME

CLEAR DAY WITH LOW TEMPERATURES

Clear and cool today after yesterday’s blizzard which brought 16.9 ins.
of snow, beating our previous record set in 2015 with 14.0 ins.
Temperatures remained below freezing and was 22F at 1pm. This cool
dry air made for excellent visibility at 80 miles. Winds remained strong
from the northwest throughout the day with gusts up to 47 MPH.

Today’s Observations:

7 A.M.
Weather: Clear, few cumulus in all quadrants
Temperature: 8F; Dew Point: -1F; Wind: WSW at 13 kts
Sea-level pressure: 30.06 ins. Hg, rising, then more slowly
Visibility: 70 miles
6-hr Max temp: 8F
6-hr Min temp: 7F
24-hr precip: 1.60 in.
24-hr snowfall: 16.9 in.
BHO SA 1155 CLR 70 180/08/M01/2513/006/ FEW CU ALQDS
NEW SNW PST 24 HRS 16.9 INS/ 8/100 4/012 50139 MANUAL 70160 10008 20007

10 A.M.
Weather: Clear, few cumulus all quadrants
Temperature: 17F; Dew Point: 4F; Wind: WNW at 22G31 kts
Peak Wind: 31 kts (36 MPH) WNW at 9:52 AM
Sea-level pressure: 30.05 ins. Hg, rising, then falling
Visibility: 80 miles
BHO SA 1455 CLR 80 177/17/04/2922G31/005/ FEW CU ALQDS
PK WND 2931/52/ 8/100 4/012 58003

1 P.M.
Weather: Clear, few cumulus all quadrants, few cirrus WSW
Temperature: 22F; Dew Point: 13F; Wind: WNW at 14G25 kts
Peak Wind: 27 kts (31 MPH) at 12;24 PM
Sea-level pressure: 30.08 ins. Hg, rising, unsteadily
Visibility: 80 mile
6-hr Max temp: 23F
6-hr Min temp:  7F
BHO SA 1755 CLR 80 188/22/13/3014G25/008/ FEW CU ALQDS FEW CI WSW
PK WND 3027/24/ 8/101 4/012 53011 10023 20007

SUMMARY FOR THURSDAY, FEBRUARY 9, 2017

TEMPERATURE (DEGREES F)
MAX…..35   NORMAL…..36
MIN……8   NORMAL…..18
MEAN….12   NORMAL…..27

DEPARTURE FROM 30-YEAR NORMAL……………………-5
TOTAL DEPARTURE FOR THE MONTH…………………..+34 [+3.6 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..43   DEPARTURE……….+5
TOTAL HEATING UNITS FOR THE MONTH………….314   DEPARTURE………-35
TOTAL HEATING UNITS FOR THE SEASON………..3341   DEPARTURE……..-539
TOTAL HEATING UNITS LAST SEASON TO DATE……3005   DIFFERENCE…….+336

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….54 NNE AT  11:21 A.M.
ASOS……………………55 NE  AT  10:17 A.M.
DAVIS…………………..51 NE  AT  10:17 A.M. RMY 54
FASTEST MILE FOR YESTERDAY…………………33 NNE AT  10:59 A.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………33 NE  AT  10:37 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..32 NE  AT  10:37 A.M.
AVERAGE WIND SPEED AND DIRECTION………….19.9 NNW
ASOS………………….19.6
DAVIS…………………17.2 NNE [016 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….1.60  DEPARTURE……+1.47
ASOS…………….NA
TOTAL PRECIPITATION FOR THE MONTH……….2.17  DEPARTURE……+0.96
ASOS…………….NA
TOTAL PRECIPITATION FOR THE YEAR………..7.67  DEPARTURE……+2.11
ASOS…………….NA

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M………16.9  DEPARTURE……+16.4
TOTAL SNOWFALL FOR THE MONTH……………18.0  DEPARTURE……+13.6
TOTAL SNOWFALL FOR THE SEASON…………..38.8  DEPARTURE…….+1.3

PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/PEAK GUST/AERO/RMY GUST
AERO: Aerovane wind recording system gust
RMY:  R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized
M:    Missing data

2/1   40/23/32/+6/0.03/0.4/…/..           43 W   AERO 44 W   RMY 47
2/2   38/25/32/+6/T/T/…/..                36 WNW AERO 37 WNW RMY 36
2/3   30/19/25/-1/0.00/0.0/…/..           28 WNW AERO 29 WNW RMY 31
2/4   31/15/23/-3/0.00/0.0/…/..           31 WNW AERO 30 WNW RMY N/A
2/5   43/22/33/+7/0.00/0.0/…/..           38 SSW AERO 41 SSW RMY N/A
2/6   37/28/33/+7/0.00/0.0/…/..           41 WNW AERO 41 WNW RMY 43
2/7   37/30/34/+7/0.54/0.7/…/..           32 ENE AERO 31 ENE RMY 32
2/8   49/25/37/+10/T/0.0/…/..             25 W   AERO 25 W   RMY 31
2/9   35/8/22/-5/1.60/16.9/…/..           54 NNE AERO 53 NNE RMY 54

2/10  Low temp since midnight is 7F; normal low is now 18F

DAILY RECORDS FOR FEBRUARY 2017

2/09/17: NEW DAILY RECORD MAXIMUM SNOWFALL OF 16.9 INS.
PREVIOUS RECORD WAS 14.0 INS. SET IN 2015

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR FEBRUARY 10
HIGH 56F IN 1909
LOW -8F IN 1899
PRECIP 1.34 INS. IN 1909
SNOWFALL 12.1 INS. IN 1926
PEAK GUST 64 MPH W IN 2001

RECORDS FOR FEBRUARY 11
HIGH 60F IN 1981
LOW -10F IN 1899
PRECIP 1.07 INCHES IN 1955
SNOWFALL 9.6 INCHES IN 1933
PEAK GUST 95 MPH S IN 1981

TODAY’S REPORT PREPARED BY: Cecilia Borries-Strigle and Kaitlin Geagan

Category: Daily Discussions

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