Friday, March 14, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, MARCH 14, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

1.4 INCHES OF NEW SNOW, 0.64 INCHES OF LIQUID FROM
RAIN, FREEZING RAIN AND SNOW FALL FOLLOWED BY ANOTHER
ARCTIC INTRUSION.

From 7:00 AM EST yesterday through 7:00 AM EST today temperatures
were suppressed between 20F and 10F, nearly match today’s daily
record low of 8F set back in 1926. A strong NW wind yesterday has
gradually dissipated from a Thursday’s peak gust of 43 MPH.

After a brilliantly clear start to the day altocumulus have slowly crept
in from the south and west to overtake most of the sky by this afternoon’s
1:00 PM observation. Temperatures have risen quickly from just 13F at
7:00 AM to 33F by 1:00 PM.

Today’s Observations:

7 A.M.
Weather: Clear, few altocumulus and altocumulus lenticularis
distant S-WNW, few cirrus fibratus ENE-ESE
Temperature: 13F; Dew Point: 2F; Wind: WSW at 7 kts
Sea-level pressure: 30.15 ins. Hg, rising, then more quickly
Visibility: 70 miles, 40 miles S-WNW
6-hr max temp: 13F
6-hr min temp: 10F
24-hr. precip: 0.05
24-hr. snow: 0.9 inches
Snow depth: 3 inches
BHO SA 1155 CLR 70 210/13/2/2507/015/ FEW AC AND ACSL DSNT S-WNW
FEW CI ENE-ESE VSBY S-WNW 40 MI NEW SNW PST 24 HRS 0.9 IN/
8/041 4/003 53030 ASOS 70004 MANUAL 70005 10013 20010

10 A.M.
Weather: Clear, few altocumulus and altocumulus lenticularis
S-NNW, few cirrus fibratus NW-NNE
Temperature: 25F Dew Point: 12F; Wind: WSW at 8 kts,
Sea-level pressure: 30.18 ins. Hg, increasing, then more slowly
Visibility: 70 miles, 50 miles W-NNW
BHO SA 1455 CLR 70 221/25/12/2408/018/ FEW AC AND ACSL S-NNW
FEW CI NW-NNE VSBY W-NNW 50 MI/ 8/041 51011

1 P.M.
Weather: Broken altocumulus and altocumulus lenticularis,
broken altostratus
Temperature: 33F; Dew Point: 11F; Wind: SW at 11G18 kts,
Sea-level pressure: 30.11 ins. Hg, steady, then falling
Visibility: 60 miles
6-hr max temp: 34F
6-hr min temp: 13F
BHO SA 1755 E80 BKN 160 BKN 60 197/33/11/2211G18/011/
ACSL OVHD AND ALQDS/ 8/070 58024 10034 20013

WEATHER SUMMARY FOR THURSDAY, MARCH 13, 2014

TEMPERATURE (DEGREES F)
MAX…..33    NORMAL…..43
MIN…..12    NORMAL…..26
MEAN….23    NORMAL…..34

DEPARTURE FROM 30-YEAR NORMAL……………………-11
TOTAL DEPARTURE FOR THE MONTH……………………-46 [-3.7 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..42  DEPARTURE………+11
TOTAL HEATING UNITS FOR THE MONTH………….467  DEPARTURE………+46
TOTAL HEATING UNITS FOR THE SEASON………..5058  DEPARTURE………+70
TOTAL HEATING UNITS LAST SEASON TO DATE……4489  DIFFERENCE…….+569

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………43 NW  AT   2:26 P.M.
AERO…………………..45 NW  AT   2:24 P.M.
ASOS…………………..44 NW  AT   2:26 P.M.
DAVIS………………….41 NW  AT   2:25 P.M. RMY 45
FASTEST MILE FOR YESTERDAY………………..31 NW  AT   2:25 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..31 NW  AT   2:26 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….29 WNW AT   5:02 P.M.
AVERAGE WIND SPEED AND DIRECTION…………19.0 NW
ASOS…………………18.0
DAVIS………………..16.2 NW [315 deg.]

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.05  DEPARTURE………….-0.11
ASOS…………..0.04
TOTAL PRECIPITATION FOR THE MONTH……….0.69  DEPARTURE………….-1.55
ASOS…………..0.68
TOTAL PRECIPITATION FOR THE YEAR……….10.78  DEPARTURE………….+0.12
ASOS………….11.22

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……..  0.9  DEPARTURE…………..+0.4
TOTAL SNOWFALL FOR THE MONTH…………….2.5  DEPARTURE…………..-4.0
TOTAL SNOWFALL FOR THE SEASON…………..84.3  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 56/34/45/+11/0.00/0.0/…/..         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 morning low temp: 10F; the normal low is now 26F

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 14
HIGH 74 IN 1946
LOW 8 IN 1926
PRECIP 4.95 INS. IN 2010
SNOWFALL 6.7 INS. IN 1958
PEAK GUST 67 MPH ENE IN 2010

RECORDS FOR MARCH 15
HIGH 80 IN 1990
LOW 6 IN 1993
PRE 2.86 INS. IN 2010
SNOW 12.0 INS. 1967
WIND 73e MPH ESE IN 1940

TODAY’S REPORT PREPARED BY: Brian Fitzgerald