BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
 
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, JANUARY 23, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME
 
TEMPERATURE DROPS TO ONE BELOW ZERO THIS MORNING
BRIGHT SUNSHINE AND LESS WIND TODAY
 
The low temperature of -1F this morning was our coldest
since -4F way back on January 4.
 
After a very cold maximum temperature of only 15F yesterday 
today's early afternoon readings have reached up to around 
the 20-degree mark.
 
Winds have diminished considerably after yesterday's
average of 16 MPH to an average around 10 MPH through
early this afternoon.
 
Snowfall for the month now totals 32.7 inches and is 20.1 inches
above normal to date.  Nine inches remains on the ground today. 
 
Today's Observations:
 
7 A.M.
Weather: Broken altostratus, broken cirrus, layers partly thin,
stratocumulus layer distant offshore NE-SE
Temperature: 0F; Dew Point: -8F; Wind: WNW at 11 kts
Sea-level pressure: 29.98 ins. Hg, rising then more rapidly
Visibility: 30 miles, light distant haze
6-hr. min temp: -1F
Total snow depth on ground: 9 inches  
BHO SA 1155 E180 BKN 220 BKN 30 153/0/-8/2811/998/ SC DSNT OFFSHR
NE-SE NMRS THN SPTS IOVC COLORFUL SUNRISE DSNT HZ/ 8/511 4/009 53015 
10003 21001
 
10 A.M. 
Weather: Scattered dense cirrus, thin broken cirrus
Temperature: 8F Dew Point: -6F; Wind: W at 9 kts,
Sea-level pressure: 30.02 ins. Hg, rising then more rapidly 
Visibility: 55 miles, light distant haze  
BHO SA 1455 220 SCT 250 –BKN 55 167/8/-6/2709/002/ PTCHS DNS CI
THN K LYR SW-WSW AND NE-E LGT DSNT HZ/ 8/002 53014
 
1 P.M.  
Weather: Scattered cirrus, 2 levels, patch dense cirrus N and
few cirrocumulus lenticularis SE-S 
Temperature: 19F; Dew Point: -4F; Wind: W at 8 kts,
Wind: Direction variable SSW-WNW
Sea-level pressure: 29.98 ins. Hg, decreasing, then more quickly
Visibility: 60 miles, light distant haze 
6-hr max. temp: 19F
6-hr min. temp: 0F  
BHO SA 1755 220 SCT 250 SCT 60 153/19/-4/2608/998/ PTCH DNS CI N
FEW CCSL SE-S WND 21V29/ 8/002 58014 10019 20000
 
WEATHER SUMMARY FOR WEDNESDAY, JANUARY 22, 2014
 
TEMPERATURE (DEGREES F)
MAX.....15    NORMAL.....34
MIN......3    NORMAL.....17
MEAN.....9    NORMAL.....25
 
DEPARTURE FROM 30-YEAR NORMAL.......................-16
TOTAL DEPARTURE FOR THE MONTH.......................+42 [+1.7 DEGREES/DAY]
 
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY..............56  DEPARTURE.........+16
TOTAL HEATING UNITS FOR THE MONTH.............827  DEPARTURE.........-42     
TOTAL HEATING UNITS FOR THE SEASON...........3104  DEPARTURE.........-69
TOTAL HEATING UNITS LAST SEASON TO DATE......2750  DIFFERENCE.......+354
 
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY..................36 N   AT   8:12 A.M.     
                   AERO.......................35 N   AT   8:12 A.M.            
                   ASOS.......................37 N   AT   8:12 A.M.        
                   DAVIS......................36 N   AT   8:12 A.M.  RMY 34
FASTEST MILE FOR YESTERDAY....................22 N   AT   8:13 A.M. 
MAXIMUM 2-MINUTE ASOS AVERAGE.................23 NNW AT  10:30 A.M.          
MAXIMUM 2-MINUTE DAVIS AVERAGE................20 N   AT   8:11 A.M.        
AVERAGE WIND SPEED AND DIRECTION............16.0 N      
                   ASOS.....................15.4
                   DAVIS....................13.9 NNW [330 deg.]
 
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M....0.02  DEPARTURE.............-0.12
                         ASOS..............0.05
TOTAL PRECIPITATION FOR THE MONTH..........4.58  DEPARTURE.............+1.46  
                         ASOS..............4.87
TOTAL PRECIPITATION FOR THE YEAR...........4.58  DEPARTURE.............+1.46
                         ASOS..............4.87
 
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M....... 0.5    DEPARTURE..............-0.1
TOTAL SNOWFALL FOR THE MONTH.............32.7    DEPARTURE.............+20.1
TOTAL SNOWFALL FOR THE SEASON............48.4    DEPARTURE.............+20.1 
 
PRELIMINARY CLIMATE SUMMARY FOR JANUARY 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 added 8/9/2011
TSTM: Thunderstorm day (thunder heard some time during day)
....: Data not yet available, records not finalized
 
1/1  26/16/21/-6/0.00/0.0/505/92          25 W   AERO 25 MPH W   RMY 27
1/2  24/00/12/-15/0.97/10.9/000/00        39 NNE AERO 39 MPH NNE RMY 39
1/3  12/-3/05/-21/0.38/4.7/270/49         36 N   AERO 39 MPH N   RMY 34
1/4  25/-4/11/-15/0.00/0.0/545/99         35 SSW AERO 37 MPH SSW RMY 38
1/5  42/23/33/+07/0.08/0.0/259 47         30 SE  AERO 32 MPH SE  RMY 42
1/6  57/25/41/+15/0.29/0.0/006/01         41 S   AERO 46 MPH S   RMY 48
1/7  25/06/16/-10/0.00/0.0/555/100        44 WNW AERO 46 MPH WNW RMY 42
1/8  21/3/12/-14/0.00/0.0/550/99          28 WSW AERO 29 MPH WSW RMY N/A
1/9  28/13/21/-5/0.00/0.0/540/97          23 WNW AERO 24 MPH WNW RMY 27
1/10 37/17/27/+2/0.05/0.3/000/00          17 SSW AERO 18 MPH SW  RMY N/A     
1/11 57/37/47/+22/0.67/0.0/000/00         50 S   AERO 59 MPH S   RMY 59
1/12 51/32/42/+17/0.04/0.0/292/52 *       41 W   AERO 44 MPH W   RMY 42
1/13 50/30/40/+15/0.00/0.0/473/84         33 S   AERO 36 MPH S   RMY 37
1/14 49/41/45/+20/0.83/0.0/000/00         35 S   AERO 37 MPH S   RMY 32      
1/15 46/33/40/+15/0.00/0.0/374/66         24 W   AERO 23 MPH W   RMY N/A
1/16 40/34/37/+12/0.00/0.0/000/00         14 ENE AERO 13 MPH ENE RMY 14
1/17 44/33/39/+14/0.00/0.0/541/95         21 SW  AERO 21 MPH SW  RMY 22
1/18 37/30/34/+9/0.82/4.2/000/00          18 E   AERO 17 MPH E   RMY 18 TSTM *
1/19 32/27/30/+5/0.03/0.5/.../..          28 SW  AERO 35 MPH SW  RMY 34
1/20 39/23/31/+6/0.00/0.0/.../..          38 W   AERO 41 MPH W   RMY 42
1/21 23/8/16/-9/..../.../.../..           29 WNW AERO 30 MPH WNW RMY 32
1/22 15/3/9/-16/..../.../.../..           36 N   AERO 35 MPH N   RMY 34  
 
* corrected sunshine from earlier reports...
* TSTM day added
 
1/23 morning low temp: -1F; the normal low is now 17F                              
 
DAILY RECORDS FOR JANUARY 2014
None so far.
 
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
 
RECORDS FOR JANUARY 23
HIGH 62F IN 1906
LOW -10F IN 1976
PRECIP 2.40 INS. IN 1935
SNOWFALL 14.6 INS. IN 1966
PEAK GUST 85 MPH S IN 1992
 
RECORDS FOR JANUARY 24
HIGH 60F IN 1967
LOW -12F IN 1907
PRECIP 2.04 INS. IN 1998
SNOWFALL 11.3 INS. IN 1935
PEAK GUST 82 MPH S IN 1996
 
TODAY'S REPORT PREPARED BY: Robert Skilling