Thursday, February 4, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
THURSDAY, FEBRUARY 4, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
HEAVY RAIN FALLS OVERNIGHT, FOG, SHOWERS AND ABOVE
NORMAL WARMTH CONTINUE THROUGH THIS MORNING
Rain began lightly and in starts and fits during the morning
and early afternoon yesterday. Rain began to fall heavily in the
evening, coming to a total of 0.80 inches of rain before midnight.
Rain showers began this morning just prior to the 7:00 AM EST
observation with fog thickening and reducing visibility. By today’s
1:00 PM EST observation another 0.04 inches of rain had fallen with
winds shifting to the W to NW after the passing of a cold front.
The stalled out cold front just to our east has kept showers just
offshore this afternoon with reduced visibility of 35 miles to the
E and 70 miles to the W. Temperatures have likely reached the maximum
for the day already at 55F this morning.
The month of January finished significantly warmer than normal,
at 4.0 degrees F above normal. The average minimum temperature of
22.3F was more than 5 degrees above normal as well.
January was drier than normal as well, with precipitation 0.58 inches
less than normal, and 2.8 inches less than normal for snow.
PRELIMINARY STATS FOR JANUARY 2016
TEMPERATURE, Deg. F
Avg. Max. 37.2 [+3.4]
Avg. Min. 22.3 [+5.2]
Mean 29.5 [+4.0]
24-hour Corrected Mean: 29.5
Max. for month: 58 on 10th
Min. for month: 4 on 5th
HEATING DEGREE DAYS
Total cooling units: 1086 [-140]
Total for the season: 2742 [-789]
Total for last season: 3531
PRECIPITATION, Inches
Total: 3.77 [-0.58]
Greatest in 24 hrs: 1.55 ins. on the 10th
Snowfall: 14.3 [-2.8]
Greatest in 24 hrs: 7.1 ins. on the 23rd
WIND, mph
Avg. uncorrected wind speed: 13.7
Avg. corrected wind speed: 14.0
Prevailing wind direction: NW @ 19%
Peak gust and direction: 55 WNW on the 19th
SUNSHINE:
Campbell-Stokes card minutes: 8964 out of 17130 poss. or 149.4 hours or 52%
Astronomical total minutes: 9243 out of 17638 poss. or 154.1 hours or 52%
Today’s Observations:
7 A.M.
Weather: Fog, light rain showers begin 6:47 AM EST
Temperature: 54F; Dew Point: 54F; Wind: SSW at 15G23 kts,
Sea-level pressure: 29.88 ins. Hg, falling, then rising but lower still
Visibility: 1/2 of a mile, fog and light rain showers
6-hr Max temp: 54F
6-hr Min temp: 53F
24-hr precip: 0.80 ins.
24-hr snowfall: 0.0 ins.
Snow depth: 0 ins.
BHO SA 1155 W3 X 1/2RW-F 120/54/54/2015G23/988/
RW-B47/ 8//// 55002 ASOS 70085 MANUAL 6000/ 70080 10054 20053
10 A.M.
Weather: Light rain showers begin 9:40 AM EST, wind shift
9:31 AM EST, overcast stratus, few stratus fractus distant SE-SSW
Temperature: 50F; Dew Point: 48F; Wind: NW at 13G22 kts,
Peak Wind: 32 knots W at 9:34 AM EST
Sea-level pressure: 29.95 ins. Hg, rising quickly, then falling, but
higher than 3 hrs ago
Visibility: 10 miles, except 50 miles WSW-NW, light rain showers,
thin fog
3-hr precip: 0.04 ins.
BHO SA 1455 E20 OVC 10RW- 141/50/48/3113G22/995/
RW-B40 VSBY WSW-NW 50 MI WSHFT 1431 FEW STFRA DSNT SE-SSW
THN FG ALQDS PK WND 2632/34/ 8/6// 50021 ASOS 60004 MANUAL 60004
1 P.M.
Weather: Broken stratocumulus, overcast cirrostratus,
few cumulus fractus distant ESE-SE, thin spot in overcast NW
Temperature: 52F; Dew Point: 41F; Wind: estimated WNW at 6 kts,
Wind Speed: Light
Sea-level pressure: 29.95 ins. Hg, about the same as 3 hrs ago
Visibility: 35 miles, except 70 miles SW-N
6-hr Max temp: 55F
6-hr Min temp: 48F
6-hr precip: 0.04 ins.
BHO SA 1755 E60 BKN 250 OVC 35 141/52/41/E3006/995/ VSBY SW-N 70 MI
FEW CUFRA DSNT ESE-SE THN SPTS INOVC NW WND LGT/
8/506 50000 ASOS 60004 MANUAL 60004 10055 20048
SUMMARY FOR WEDNESDAY, FEBRUARY 3, 2016
TEMPERATURE (DEGREES F)
MAX…..55 NORMAL…..35
MIN…..34 NORMAL…..17
MEAN….45 NORMAL…..26
DEPARTURE FROM 30-YEAR NORMAL……………………+19
TOTAL DEPARTURE FOR THE MONTH……………………+59 [+19.5 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..20 DEPARTURE………-19
TOTAL HEATING UNITS FOR THE MONTH…………..58 DEPARTURE………-60
TOTAL HEATING UNITS FOR THE SEASON………..2800 DEPARTURE……..-848
TOTAL HEATING UNITS LAST SEASON TO DATE……3495 DIFFERENCE…….-695
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….55 SSE AT 10:30 P.M.
ASOS……………………53 S AT 6:16 P.M.
DAVIS…………………..50 SSE AT 10:22 P.M. RMY 53
FASTEST MILE FOR YESTERDAY…………………40 S AT 6:16 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………38 S AT 6:17 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..36 SSW AT 6:17 P.M.
AVERAGE WIND SPEED AND DIRECTION……………22.4 SSE
ASOS……………………21.1
DAVIS…………………..19.7 S [177 Deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.80 DEPARTURE……+0.67
ASOS…………..0.85
TOTAL PRECIPITATION FOR THE MONTH……….0.80 DEPARTURE……+0.40
ASOS…………..0.85
TOTAL PRECIPITATION FOR THE YEAR………..4.57 DEPARTURE……-0.18
ASOS…………..4.79
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH…………….0.0 DEPARTURE…….-1.5
TOTAL SNOWFALL FOR THE SEASON…………..15.6 DEPARTURE……-19.0
PRELIMINARY CLIMATE SUMMARY FOR JANUARY CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SUN(MIN.)/SUN(%)/ PEAK GUST/ AERO/RMY 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
1/1 37/29/33/+6/0.00/0.0/005/01 29 W RMY 29
1/2 37/27/32/+5/0.00/0.0/461/84 31 W RMY N/A
1/3 41/27/34/+8/0.00/0.0/501/91 28 W RMY 29
1/4 30/10/20/-6/T/T/000/00 29 NNW RMY 29
1/5 23/4/14/-12/0.00/0.0/552/100 28 NNW RMY N/A
1/6 43/17/30/+4/0.00/0.0/553/100 24 SW RMY 24
1/7 43/25/34/+8/0.00/0.0/521/94 21 SW RMY N/A
1/8 40/28/34/+8/0.00/0.0/000/00 28 E AERO 25 ENE RMY 25
1/9 39/36/38/+12/T/0.0/000/00 21 ENE AERO 20 ENE RMY N/A
1/10 58/38/48/+23/1.55/0.0/000/00 53 SSE AERO 55 SSE RMY 53
1/11 48/21/35/+10/0.00/0.0/559/100 43 W AERO 45 WSW RMY N/A
1/12 35/19/27/+2/0.18/2.2/359/64 30 SE AERO N/A RMY N/A
1/13 30/17/24/-1/0.02/0.2/551/98 50 W AERO 58 W RMY 54
1/14 28/17/23/-2/T/T/389/69 26 W AERO N/A RMY 25
1/15 40/23/32/+7/0.00/0.0/102/18 26 ESE AERO 25 ESE RMY 23
1/16 41/32/37/+12/1.03/T/000/00 32 NNW AERO 32 NNW RMY 28
1/17 33/26/30/+5/0.09/1.7/125/22 29 WNW AERO 28 WNW RMY N/A
1/18 26/15/21/-4/0.16/2.9/487/82 50 W AERO 50 W RMY 47
1/19 22/13/18/-7/0.00/0.0/194/34 55 WNW AERO 59 W RMY 55
1/20 30/15/23/-2/0.00/0.0/471/82 46 WNW AERO 47 WNW RMY 45
1/21 30/15/23/-2/0.00/0.0/559/97 38 WNW AERO 38 NW RMY 35
1/22 28/14/21/-4/0.00/0.0/399/69 32 NW AERO 32 NW RMY N/A
1/23 30/18/24/-1/0.74/7.1/000/00 54 NE AERO 56 NE RMY 50
1/24 33/14/24/-1/T/T/466/80 34 N AERO 37 N RMY 29
1/25 37/20/29/+4/0.00/0.0/444/76 22 NW AERO 22 NW RMY N/A
1/26 49/27/38/+13/0.00/0.0/064/11 44 SSW AERO 47 SSW RMY 43
1/27 43/27/35/+10/0.00/0.0/182/31 38 WNW AERO 40 SSW RMY 37
1/28 41/23/32/+7/0.00/0.0/537/91 29 SSW AERO 29 SSW RMY 29
1/29 39/32/36/+11/0.00/0.0/012/02 25 NW AERO 24 NW RMY 28
1/30 42/26/33/+8/0.00/0.0/462/81 39 SW AERO 43 SW RMY 38
1/31 56/36/46/+20/0.00/0.0/340/57 37 S AERO 38 S RMY 36
2/1 64/40/52/+26/0.00/0.0/…/.. 36 WNW AERO 37 W RMY 34
2/2 48/31/40/+14/0.00/0.0/…/.. 23 NW AERO 23 WNW RMY N/A
2/3 55/34/45/+19/0.80/0.0/…/.. 55 SSE AERO 58 SSE RMY 53
2/4 morning low since midnight 53F; normal low is 17F
DAILY RECORDS FOR JANUARY & FEBRUARY 2016
**1/10/16: NEW DAILY RECORD MAXIMUM TEMPERATURE OF 58F, BREAKS
PREVIOUS RECORD OF 54F SET BACK IN 2000**
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 4
HIGH 63F IN 1991
LOW -4F IN 1886, 1908
PRECIP 1.80 INS. IN 1926
SNOWFALL 15.0 INS. IN 1961
PEAK GUST 89 MPH SSE IN 1972
RECORDS FOR FEBRUARY 5
HIGH 65F IN 1991
LOW -14F IN 1918
PRECIP 1.55 INS. IN 2001
SNOWFALL 16.0 INS. IN 1907
PEAK GUST 67 MPH WNW IN 1969
TODAY’S REPORT PREPARED BY: Brian Fitzgerald
