BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
TUESDAY, MARCH 25, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
 
UNSEASONABLE COLD AND CONTINUED DRYNESS LINGERS
WITH CLOUDS ON THE INCREASE.
 
A strong push of Arctic air arrived during the early
morning hours yesterday, bringing with it chilly temperatures
and gusty NW winds. With only a daily maximum of 32F, and
a daily average of 23F, temperatures were 15 degrees below
the 30-year average.
 
With the approach of tomorrow's major weather maker clouds have
been on the increase with a thin overcast of cirrostratus
dominating the sky since mid-morning. Although dew points have
remained in the single digits above zero, they too have slowly
been on the increase as moisture slowly moves into the region.
 
By 1:00 PM EST light distant haze remained visible in all
directions keeping visibility to 45 miles. Cumulus from the
10:00 AM EST observation had morphed and flattened into
stratocumulus with cirrus fibratus and a thin veil of
cirrostratus. By 1:00 PM a 6-hr maximum of 37F was recorded
along with a minimum of 20F.
 
 
Today's Observations:
 
7 A.M.
Weather: Clear, stratocumulus distant E offshore,
cirrostratus SE-SW
Temperature: 21F; Dew Point: 6F; Wind: WSW at 6 kts,
Sea-level pressure: 30.15 ins. Hg, rising then more slowly
Visibility: 50 miles, light distant haze in all directions
6-hr max temp: 21F
6-hr min temp: 17F
Snow depth: Trace 
BHO SA 1155 CLR 50 209/21/6/2406/015/ FEW SC DSNT OFFSHR E 
FEW CS SE-SW LGT DSNT HZ ALQDS/ 8/508 51008 10021 20017
 
10 A.M. 
Weather: Few cumulus in all directions, thin overcast
of cirrostratus 
Temperature: 31F; Dew Point: 9F; Wind: NW at 9 kts,
Wind: Direction variability S to NNW
Sea-level pressure: 30.13 ins. Hg, falling, then rising
Visibility: 50 miles, light distant haze in all directions
BHO SA 1455 E250 –OVC 50 202/31/9/013/ FEW CU ALQDS LGT DSNT 
HZ ALQDS WND 19V33/ 8/107 55007
 
1 P.M.
Weather: Scattered stratocumulus, broken cirrus fibratus,
thin overcast cirrostratus
Temperature: 35F; Dew Point: 12F; Wind: S at 12G20 kts,
Sea-level pressure: 30.09 ins. Hg, falling then more slowly
Visibility: 45 miles, light distant haze in all directions
6-hr max temp: 37F 
6-hr min temp: 20F
BHO SA 1755 E50 BKN 180 BKN 250 –OVC 45 188/35/12/1912G20/009/
LGT HZ DSNT ALQDS/ 8/407 56014 10037 20020
 
WEATHER SUMMARY FOR MONDAY, MARCH 24, 2014
 
TEMPERATURE (DEGREES F)
MAX.....32    NORMAL.....47
MIN.....13    NORMAL.....29
MEAN....23    NORMAL.....38
 
DEPARTURE FROM 30-YEAR NORMAL........................-15
TOTAL DEPARTURE FOR THE MONTH........................-92 [-4.0 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............42  DEPARTURE.........+15
TOTAL HEATING UNITS FOR THE MONTH.............828  DEPARTURE.........+91     
TOTAL HEATING UNITS FOR THE SEASON...........5419  DEPARTURE........+115 
TOTAL HEATING UNITS LAST SEASON TO DATE......4863  DIFFERENCE.......+556
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................37 N    AT 12:41 A.M.                
                   AERO.......................36 N    AT 12:39 A.M.                          
                   ASOS.......................37 NNW  AT 12:41 A.M.                      
                   DAVIS......................33 NNW  AT 12:42 A.M  RMY 36   
FASTEST MILE FOR YESTERDAY....................27 N    AT 12:41 A.M.            
MAXIMUM 2-MINUTE ASOS AVERAGE.................26 NNW  AT 12:41 A.M.         
MAXIMUM 2-MINUTE DAVIS AVERAGE................23 NNW  AT 12:41 A.M.                     
AVERAGE WIND SPEED AND DIRECTION............11.7 NNW  
                   ASOS.....................11.8     
                   DAVIS....................10.1 NW  [317 deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.00  DEPARTURE.............-0.19
                         ASOS..............0.00
TOTAL PRECIPITATION FOR THE MONTH..........1.00  DEPARTURE.............-3.30      
                         ASOS..............1.01
TOTAL PRECIPITATION FOR THE YEAR..........11.09  DEPARTURE.............-1.63 
                         ASOS.............11.55
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M..........0.0  DEPARTURE..............-0.3
TOTAL SNOWFALL FOR THE MONTH................2.5  DEPARTURE..............-8.2
TOTAL SNOWFALL FOR THE SEASON..............84.3  DEPARTURE.............+26.6
 
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/+10/0.50/T/120/17           29 NNW AERO 30 MPH NNW RMY 30
3/13 33/12/23/-11/0.14/1.4/007/01         43 NW  AERO 45 MPH NW  RMY 45
3/14 37/10/24/-11/0.00/0.0/498/70         39 SSW AERO 41 MPH SSW RMY 42
3/15 54/35/45/+10/0.01/0.0/450/63         50 WNW AERO 58 MPH WNW RMY 54
3/16 34/21/28/-7/0.00/0.0/509/71          36 W   AERO 36 MPH WNW RMY 37
3/17 30/13/22/-14/0.00/0.0/562/78         25 N   AERO 26 MPH N   RMY 19
3/18 35/16/26/-10/0.00/0.0/701/97         18 ENE AERO 16 MPH ENE RMY 18
3/19 44/23/34/-2/T/0.0/.../..             24 E   AERO 23 MPH E   RMY 26
3/20 51/35/43/+6/0.30/0.0/.../..          36 W   AERO 37 MPH W   RMY 39
3/21 42/29/36/-1/0.00/0.0/.../..          40 W   AERO 41 MPH W   RMY 42
3/22 55/26/41/+4/T/0.0/.../..             52 WNW AERO 52 MPH WNW RMY 53
3/23 43/20/32/-6/0.00/0.0/.../..          32 NNW AERO 32 MPH NNW RMY N/A
3/24 32/13/23/-15/0.00/0.0/.../..         37 N   AERO 36 MPH N   RMY 36
 
3/25 morning low temp: 17F; the normal low is now 30F
 
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 25
HIGH 76 IN 1910
LOW 8 IN 1888, 1956
PRECIP 1.84 INS. IN 1909
SNOWFALL 1.0 INS. IN 1912
PEAK GUST 69 MPH SE IN 1969
 
RECORDS FOR MARCH 26
HIGH 76 IN 1922, 1949
LOW 6 IN 1960
PRECIP 1.99 INS. IN 1988
SNOWFALL 5.4 INS. IN 2001
PEAK GUST 63 MPH S IN 1970
 
TODAY'S REPORT PREPARED BY: Brian Fitzgerald