Monday, March 10, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 10, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

PERIOD OF FLUFFY LIGHT SNOW EARLY TODAY
TEMPS. REACH 40F EARLY THIS AFTERNOON

A period of light snow which began before dawn
and ended by 9 A.M. EDT produced 0.8 inch of very
fluffy snow which melted down to only 0.03 water.

Temperatures are running close to normal today after
the first week of March was the coldest since 1978.

Today’s Observations:

7 A.M.
Weather: Partial obscurement, overcast nimbostratus, snow and
fog obscuring 5/10 of the sky, light snow and fog, snow
melting on road surface
Temperature: 27F; Dew Point: 25F; Wind: SSW at 9 kts
Sea-level pressure: 29.82 ins. Hg, falling then more slowly
Visibility: 1 mile, except 11/2 miles SSE-S, light snow/fog
6-hr max temp: 29F
6-hr min temp: 26F
24-hr. precip: 0.02 in.
24-hr. snowfall: 0.7 in.
Snow depth: 8 inches
BHO SA 1155 –X E25 OVC 1S-F 098/27/25/2009/982/ SF5 VSBY SSE-S 11/2
TOTAL NEW SNW PST 6/24 HRS 0.7 IN SNW MELTING ON RD SFC/
8/02/ 4/008 57012 MANUAL 6002/ MANUAL 70002 ASOS 60002 ASOS MANUAL
70002 10029 20026

10 A.M.
Weather: Overcast nimbostratus becoming stratocumulus
Temperature: 32F Dew Point: 26F; Wind: SW at 9 kts,
Sea-level pressure: 29.82 ins. Hg, falling
Visibility: 20 miles, except 25 miles WNW, hazy
3-hr precip: 0.01 in.
3-hr snowfall: 0.1 in.
BHO SA 1455 E40 OVC 20 097/32/26/2209/982/ HAZY NEW SNW PST
3 HRS 0.1 IN/ 8/02/ 56001 ASOS 60001 MANUAL 6001/

1 P.M.
Weather: Scattered cumulus, broken stratocumulus, overcast
of cirrostratus with few thin spots
Temperature: 40F; Dew Point: 23F; Wind: WSW at 10G16 kts,
Wind: Direction variability SW-WNW
Sea-level pressure: 29.76 ins. Hg, falling then more rapidly
Visibility: 20 miles, hazy
6-hr max temp: 41F
6-hr min temp: 27F
6-precip: 0.01 in.
6-hr snowfall: 0.1 in.
BHO SA 1755 38 SCT E55 BKN 250 OVC 20 078/40/23/2510G16/976/
FEW THN SPTS IOVC WND 23V29 TOTAL NEW SNW PST 6 HRS 0.1 IN/
8/807 58019 ASOS 60001 MANUAL 6001/ 10041 20027

WEATHER SUMMARY FOR SUNDAY, MARCH 9, 2014

TEMPERATURE (DEGREES F)
MAX…..40    NORMAL…..42
MIN…..25    NORMAL…..24
MEAN….33    NORMAL…..33

DEPARTURE FROM 30-YEAR NORMAL……………………..0
TOTAL DEPARTURE FOR THE MONTH……………………-57 [-6.5 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..32  DEPARTURE………..8
TOTAL HEATING UNITS FOR THE MONTH………….353  DEPARTURE………+57
TOTAL HEATING UNITS FOR THE SEASON………..4944  DEPARTURE………+80
TOTAL HEATING UNITS LAST SEASON TO DATE……4423  DIFFERENCE…….+521

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………28 NW  AT   3:09 P.M. *
AERO…………………..29 NW  AT   3:08 P.M.
ASOS…………………..29 NW  AT   3:09 P.M.
DAVIS………………….28 WNW AT   3:08 P.M. RMY 29
FASTEST MILE FOR YESTERDAY………………..21 WNW at   3:08 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..20 WNW AT   3:08 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….18 W   AT   3:05 P.M.
AVERAGE WIND SPEED AND DIRECTION………….11.3 NW
ASOS………………….10.4
DAVIS…………………9.7  NW [310 deg.] * LAST OF SEVERAL OCCURRENCES

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.02  DEPARTURE………….-0.16
ASOS…………..0.02
TOTAL PRECIPITATION FOR THE MONTH……….0.05  DEPARTURE………….-1.53
ASOS…………..0.05
TOTAL PRECIPITATION FOR THE YEAR……….10.13  DEPARTURE………….+0.14
ASOS………….10.59

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.7  DEPARTURE…………..+0.2
TOTAL SNOWFALL FOR THE MONTH…………….1.0  DEPARTURE…………..-3.6
TOTAL SNOWFALL FOR THE SEASON…………..82.8  DEPARTURE………….+31.2

PRELIMINARY CLIMATE SUMMARY FOR MARCH 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/AERO GUST
AERO: Aerovane wind recording system gust
RMY:  RMY = R.M. Young wind gust recording system
TSTM: Thunderstorm day (thunder heard some time during day)
….: Data not yet available, records not finalized

3/1  34/12/23/-8/0.00/0.0/458/68          28 SSW AERO 29 MPH SSW RMY 30
3/2  37/28/33/2/T/T/014/02                22 SW  AERO 22 MPH SW  RMY 29
3/3  28/11/20/-12/0.00/0.0/000/00         29 NNW AERO 30 MPH NNW RMY N/A
3/4  29/6/18/-14/0.00/0.0/444/65          17 SW  AERO 16 MPH SW  RMY 17
3/5  27/16/22/-10/0.02/0.3/000/00         21 NE  AERO 20 MPH N   RMY 23
3/6  26/7/17/-15/0.00/0.0/689/100         23 NNW AERO 23 MPH NNW RMY N/A
3/7  35/16/26/-7/0.00/0.0/…/..          18 SE  AERO 17 MPH SE  RMY 18
3/8  52/27/40/+7/0.00/0.0/…/..          26 NW  AERO 29 MPH NNW RMY 27
3/9  40/25/33/0/0.00/0.0/…/..           28 NW  AERO 29 MPH NW  RMY 29

3/10  morning low temp: 26F; the normal low is now 25F

DAILY RECORDS FOR MARCH 2014
None so far.

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 PREPARED BY: Robert Skilling