Monday, March 17, 2014
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
MONDAY, MARCH 17, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
HIGH CLOUDINESS FROM LOW PRESSURE MOVING EAST TO OUR SOUTH
COLDER ARCTIC AIR TODAY WITH A.M. LOW OF 13F
TEMPERATURES ONLY IN MID 20’S EARLY AFTERNOON
SNOW ON GROUND AT SUMMIT VERY PATCHY AND BEING
RECORDED AS A TRACE FOR THE FIRST TIME TODAY
A storm system which moved eastward into the Atlantic
well to our south early today brought a late season
significant snowfall event to the Middle Atlantic
states. While the high clouds had overspread our
sky overnight only a few flakes of snow fell in a
few places along the New England south coast.
A reinforcing shot of Arctic air is following in
the wake of the system headed out to sea to our
south and temperatures are being held to the 20’s
along with dew points in the single numbers below
zero. This comes after Sunday’s high reading of
34 degrees at mid afternoon.
Although there are scattered patches of snow on the ground
here at the summit, the snow cover on the ground has dropped
to a trace today for the first time since February 3rd.
Today’s Observations:
7 A.M.
Weather: Overcast altostratus opacqus, ceiling lower east thru south,
higher clouds visible distant NW-NE, virga except distant W-NE
Temperature: 14F; Dew Point: -4F; Wind: N at 10 kts,
Wind: Direction variable NNW-NNE
Sea-level pressure: 30.14 ins. Hg, rising slightly
Visibility: 70 miles, except 80 miles WNW-NW
6-hr max temp: 33F
6-hr min temp: 13F
24-hr. precip: none
Snow depth: trace
BHO SA 1155 E140 OVC 70 206/14/-4/3510/014/ SC DSNT NE-SE
CIG LWR E-S HIER CLDS VSB DSNT NW-NE VIRGA XCPT DSNT W-N
VSBY NW 80/ 8/52/ 53002 10020 20013
10 A.M.
Weather: Scattered altocumulus, overcast cirrus/cirrostratus,
few thin spots in overcast, stratocumulus offshore distant NE-SE
Temperature: 21F Dew Point: -3F; Wind: NNE at 3 kts,
Wind: Light
Sea-level pressure: 30.14 ins. Hg, about steady
Visibility: 60 miles, distant haze
BHO SA 1455 180 SCT E220 OVC 60 207/21/-3/0203/014/ SC OFFSHR NE-SE
HIER CLDS VSB FEW THN SPTS IOVC WND LGT DSNT HZ/ 8/537 50001
1 P.M.
Weather: Broken dense cirrostratus, overcast dense cirrostratus,
few thin spots in overcast, break in overcast/line of clearing
extending distant W-N
Temperature: 26F; Dew Point: 5F; Wind: NE at 5 kts,
Wind: Light
Sea-level pressure: 30.08 ins. Hg, falling then more slowly
Visibility: 60 miles, distant haze
6-hr max temp: 26F
6-hr min temp: 14F
BHO SA 1755 E220 BKN 250 OVC 60 185/25/5/0505/008/ FEW CU/SC LYR
ALG/OFFSHR DSNT NE-SSE BINOVC/LINE OF CLRG XTDNG DSNT W-N
WND LGT/ 56022 10026 20014
WEATHER SUMMARY FOR SUNDAY, MARCH 16, 2014
TEMPERATURE (DEGREES F)
MAX…..34 NORMAL…..44
MIN…..21 NORMAL…..26
MEAN….28 NORMAL…..35
DEPARTURE FROM 30-YEAR NORMAL…………………….-7
TOTAL DEPARTURE FOR THE MONTH……………………-54 [-3.6 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..37 DEPARTURE……….+7
TOTAL HEATING UNITS FOR THE MONTH………….565 DEPARTURE………+54
TOTAL HEATING UNITS FOR THE SEASON………..5156 DEPARTURE………+77
TOTAL HEATING UNITS LAST SEASON TO DATE……4597 DIFFERENCE…….+559
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………36 W AT 9:30 A.M.
AERO…………………..36 WNW AT 9:58 A.M. *
ASOS…………………..37 WNW AT 9:58 A.M.
DAVIS………………….32 WNW AT 9-10 A.M. RMY 37
FASTEST MILE FOR YESTERDAY………………. 26 W AT 9:29 A.M. *
MAXIMUM 2-MINUTE ASOS AVERAGE……………..25 W AT 9:34 A.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….24 WNW AT 9-10 A.M.
AVERAGE WIND SPEED AND DIRECTION…………15.1 WNW
ASOS…………………14.6
DAVIS………………..13.4 WNW [290 deg.]
* the last of several occurrences….
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE………….-0.18
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….0.70 DEPARTURE………….-2.07
ASOS…………..0.70
TOTAL PRECIPITATION FOR THE YEAR……….10.79 DEPARTURE………….-0.40
ASOS………….11.24
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M…….. 0.0 DEPARTURE…………..-0.4
TOTAL SNOWFALL FOR THE MONTH…………….2.5 DEPARTURE…………..-5.2
TOTAL SNOWFALL FOR THE SEASON…………..84.3 DEPARTURE………….+29.6
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: 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/-7/0.00/0.0/449/65 18 SE AERO 17 MPH SE RMY 18
3/8 52/27/40/+7/0.00/0.0/673/97 26 NW AERO 29 MPH NNW RMY 27
3/9 40/25/33/0/0.00/0.0/669/96 28 NW AERO 29 MPH NW RMY 29
3/10 42/26/34/+1/0.03/0.8/196/28 21 S AERO 22 MPH S RMY 27
3/11 56/34/45/+11/0.00/0.0/450/64 33 W AERO 33 MPH W RMY 34
3/12 53/34/44/+10/…./…/…/.. 29 NNW AERO 30 MPH NNW RMY 30
3/13 33/12/23/-11/…./…/…/.. 43 NW AERO 45 MPH NW RMY 45
3/14 37/10/24/-11/0.00/0.0/…/.. 39 SSW AERO 41 MPH SSW RMY 42
3/15 54/35/45/+10/0.02/0.0/…/.. 50 WNW AERO 58 MPH WNW RMY 54
3/16 34/21/28/-7/0.00/0.0/…/.. 36 W AERO 36 MPH WNW RMY 37
3/17 morning low temp: 13F; the normal low is now 27F
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 17
HIGH 69 IN 2003
LOW 6 IN 1885
PRECIP 1.97 INS. IN 1968
SNOWFALL 6.5 INS. IN 1956
PEAK GUST 70 MPH SSW IN 1973
RECORDS FOR MARCH 18
HIGH 72 IN 2012
LOW 0 IN 1885
PRECIP 5.61 INS. IN 1968 [RECORD FOR MONTH]
SNOWFALL 9.3 INS. IN 1985
PEAK GUST 71e MPH WNW IN 1941
TODAY’S REPORT PREPARED BY: Robert Skilling
