Tuesday, March 11, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, MARCH 11, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

A FOGGY START TO THE DAY WITH CLOUDS AND HUMIDITY
GENERALLY DECREASING AS TEMPS REACH THE MID 50S.

Following yesterday’s half winter and half spring-like day,
temperatures remained above freezing through last night reaching
54F by the 1:00 PM observation.

Visibility at this morning’s 7:00 AM observation was reduced to
10 miles in all directions due to a layer of fog below the station
that was generally lifting and decreasing. The sun struggled
to break through some thin overcast for most of the morning until
skies began to clear leaving mostly thin cirrus fibratus for sky
cover.

With a 54F maximum so far for today, this puts us 11 degrees over
the normal daily high of 43F for this date.

Today’s Observations:

7 A.M.
Weather: Fog below the station, broken altostratus, thin overcast
of cirrostratus, few altocumulus lenticularis in all directions,
breaks in overcast NNE-NE
Temperature: 36F; Dew Point: 33F; Wind: WSW at 12G18 kts
Sea-level pressure: 29.56 ins. Hg, steady, then increasing
Visibility: 10 miles, reduced by valley fog
6-hr max temp: 36F
6-hr min temp: 34F
24-hr. precip: 0.01 in.
24-hr. snowfall: 0.1 in.
Snow depth: 6 inches
BHO SA 1155 E200 BKN 250 –OVC 10 010/36/33/2512G18/956/
FG BLOW STA ALQDS FEW ACSL ALQDS BINOVC NNE-NE NEW SNW PST 24 HRS
0.1 IN/ 8/016 4/006 53012 ASOS 70001 MANUAL 70001 10036 20034

10 A.M.
Weather: Scattered altostratus, thin overcast of cirrus fibratus
Temperature: 46F Dew Point: 32F; Wind: W at 11 kts,
Sea-level pressure: 29.59 ins. Hg, increasing, then steady
Visibility: 15 miles, except 10 miles NE-NW, light fog
BHO SA 1455 200 SCT E250 –OVC 15 019/46/32/2811/959/
LGT FG ALQDS VSBY NE-NW 10 MI/ 8/011 51009

1 P.M.
Weather: Broken cirrus fibratus, few altocumulus lenticularis
distant N-SSW
Temperature: 54F; Dew Point: 42F; Wind: WNW at 15G25 kts,
Sea-level pressure: 29.56 ins. Hg, falling then more slowly
Visibility: 30 miles, hazy
6-hr max temp: 54F
6-hr min temp: 36F
BHO SA 1755 E250 BKN 30 011/54/42/2915G25/956/ FEW ACSL DSNT
N-SSW LGT DSNT HZ ALQDS/ 8/041 56008 10054 20036

WEATHER SUMMARY FOR MONDAY, MARCH 10, 2014

TEMPERATURE (DEGREES F)
MAX…..42    NORMAL…..42
MIN…..26    NORMAL…..25
MEAN….34    NORMAL…..33

DEPARTURE FROM 30-YEAR NORMAL…………………….+1
TOTAL DEPARTURE FOR THE MONTH……………………-56 [-5.8 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..31  DEPARTURE……….-1
TOTAL HEATING UNITS FOR THE MONTH………….384  DEPARTURE………+56
TOTAL HEATING UNITS FOR THE SEASON………..4975  DEPARTURE………+80
TOTAL HEATING UNITS LAST SEASON TO DATE……4423  DIFFERENCE…….+552

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………21 S   AT  11:47 P.M.
AERO…………………..22 S   AT  11:58 P.M.
ASOS…………………..21 SSE AT  11:47 P.M.
DAVIS………………….N/A                  RMY 27
FASTEST MILE FOR YESTERDAY………………..15 S   AT  11:47 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..16 SSE AT  11:47 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….N/A
AVERAGE WIND SPEED AND DIRECTION………….8.5 NW
ASOS………………….8.4
DAVIS…………………7.6  SW [220 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.01  DEPARTURE………….-0.17
ASOS…………..0.01
TOTAL PRECIPITATION FOR THE MONTH……….0.05  DEPARTURE………….-1.70
ASOS…………..0.06
TOTAL PRECIPITATION FOR THE YEAR……….10.14  DEPARTURE………….-0.03
ASOS………….10.60

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.1  DEPARTURE…………..-0.4
TOTAL SNOWFALL FOR THE MONTH…………….1.1  DEPARTURE…………..-4.0
TOTAL SNOWFALL FOR THE SEASON…………..82.9  DEPARTURE………….+30.8

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 42/26/34/+1/0.03/0.8/…/..          21 S   AERO 22 MPH S   RMY 27

3/11  morning low temp: 34F; 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 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

RECORDS FOR MARCH 12
HIGH 72 IN 2012
LOW 2 IN 1885
PRECIP 2.87 INS. IN 1888
SNOWFALL 9.7 INS. IN 1959
PEAK GUST 66 MPH SE IN 1962

TODAY’S REPORT PREPARED BY: Brian Fitzgerald