Sunday, February 14, 2016
BLUE HILL METEOROLOGICAL OBSERVATORY
MILTON, MASSACHUSETTS
ELEVATION 635 FEET, 10 MILES SSW OF BOSTON, MA
DAILY DISCUSSION AND CLIMATE SUMMARY
SUNDAY, FEBRUARY 14, 2016
ALL TIMES ARE IN EASTERN STANDARD TIME
COLDEST VALENTINE’S DAY ON RECORD IN 131 YEARS OF
RECORD KEEPING ON GREAT BLUE HILL: TEMPS REACH -14F
Temperatures began to tumble yesterday afternoon dropping
at a rate of 4 degrees F per hour for several hours. Temps
reached below zero after 7:00 PM EST last evening, eventually
reaching a minimum of -14F. This reading sets a new daily
record minimum temperature, surpassing the old record of
-8F set back in 1979.
High winds accompanied the Arctic cold, hitting peak gusts
in the 41-47 MPH range depending on the anemometer. For
official reporting purposes, this morning’s low of -14F
coupled with the average wind speed of 18 MPH at that
time created a wind chill of -39F. It’s possible wind chills
exceeded -40F with some of the higher wind gusts.
Temperatures have struggled to reach above zero today, and
by today’s 1:00 PM EST observation, a maximum of 8F was
recorded. Today’s daily record low maximum temperature
is 10F, also set back in 1979.
Today’s Observations:
7 A.M.
Weather: Clear, few altocumulus lenticularis distant NE-ESE,
few stratocumulus distant S, sea smoke distant offshore NNE-ESE
Temperature: -13F; Dew Point: -23F; Wind: WNW at 16 kts,
Wind Chill: -38F
Sea-level pressure: 30.29 ins. Hg, rising, then more quickly
Visibility: 75 miles
6-hr Max temp: -10F
6-hr Min temp: -14F
24-hr precip: 0.00
24-hr snowfall: 0.0
Snow depth: 8 ins.
BHO SA 1155 CLR 75 258/-13/-23/3016/029/
FEW ACSL DSNT NE-ESE FEW SC DSNT S SEA SMOKE DSNT OFFSHR NNE-ESE
WND CHILL -38F/ 8/540 4/008 53028 11010 21014
10 A.M.
Weather: Clear, few stratocumulus distant offshore NE-ESE and S,
sea smoke distant offshore ENE-ESE
Temperature: -2F; Dew Point: -15F; Wind: NW at 12G19 kts
Wind Chill: -26F
Sea-level pressure: 30.36 ins. Hg, rising, then more slowly
Visibility: 75 miles
BHO SA 1455 CLR 75 282/-2/-15/3212G19/036/ FEW SC DSNT OFFSHR NE-ESE AND S
SEA SMOKE DSNT OFFSHR ENE-ESE WND CHILL -26F/ 8/500 51024
1 P.M.
Weather: Clear, few stratocumulus distant offshore NE-SE
Temperature: 8F; Dew Point: -9F; Wind: NW at 12G21 kts,
Wind Chill: -9F
Sea-level pressure: 30.37 ins. Hg, rising, then steady
Visibility: 75 miles
6-hr Max temp: 8F
6-hr Min temp: -13F
BHO SA 1755 CLR 75 285/8/-9/3112G21/037/
FEW SC DSNT OFFSHR NE-SE WND CHILL -9F/ 8/500 51003 10008 21013
SUMMARY FOR SATURDAY, FEBRUARY 13, 2016
TEMPERATURE (DEGREES F)
MAX…..21 NORMAL…..36
MIN…..-7 NORMAL…..19
MEAN…..7 NORMAL…..28
DEPARTURE FROM 30-YEAR NORMAL……………………-21
TOTAL DEPARTURE FOR THE MONTH……………………+40 [+2.9 DEGREES/DAY]
HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY…………..58 DEPARTURE………+21
TOTAL HEATING UNITS FOR THE MONTH………….459 DEPARTURE………-41
TOTAL HEATING UNITS FOR THE SEASON………..3201 DEPARTURE……..-830
TOTAL HEATING UNITS LAST SEASON TO DATE……3964 DIFFERENCE…….-763
PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY……………….41 W AT 2:08 P.M.*
ASOS……………………45 W AT 5:40 P.M.
DAVIS…………………..42 W AT 2:10 P.M. RMY 43
FASTEST MILE FOR YESTERDAY…………………31 WNW AT 7:23 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE………………31 WNW AT 7:23 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE……………..30 NNW AT 7:23 P.M.
AVERAGE WIND SPEED AND DIRECTION…………..16.4 W
ASOS…………………..15.2
DAVIS………………….13.9 NW [311 Deg.]
PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.00 DEPARTURE……-0.15
ASOS…………..0.00
TOTAL PRECIPITATION FOR THE MONTH……….3.11 DEPARTURE……+1.33
ASOS…………..3.15
TOTAL PRECIPITATION FOR THE YEAR………..6.88 DEPARTURE……+0.75
ASOS…………..7.09
SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0 DEPARTURE…….-0.5
TOTAL SNOWFALL FOR THE MONTH……………21.3 DEPARTURE……+14.9
TOTAL SNOWFALL FOR THE SEASON…………..36.9 DEPARTURE…….-2.6
PRELIMINARY CLIMATE SUMMARY FOR FEBRUARY CALENDAR DAY DATA
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
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/+19/0.80/0.0/000/00 55 SSE AERO 58 SSE RMY 53
2/4 55/39/47/+21/…./0.0/000/00 37 W AERO 36 W RMY 35
2/5 39/19/29/+3/…./12.5/000/00 37 NNW AERO 39 NNW RMY 35
2/6 35/17/26/0/0.00/0.0/…/.. 25 SSW AERO 24 SSW RMY 23
2/7 43/26/35/+8/0.00/0.0/…/.. 35 ENE AERO 35 ENE RMY N/A
2/8 36/16/26/-1/…./…/000/00 53 NE AERO 55 NE RMY 53
2/9 26/17/22/-5/…./…/000/00 21 N AERO 22 N RMY N/A
2/10 33/21/27/+0/0.01/0.0/…/.. 23 W AERO 23 W RMY 21
2/11 26/7/17/-10/T/T/…/.. 39 W AERO 47 W RMY 42
2/12 23/4/13/-14/0.00/0.0/…/.. 31 WNW AERO 38 WNW RMY 21
2/13 21/-7/7/-21/0.00/0.0/…/.. 41 W AERO 46 WNW RMY 43
2/14 morning low temp. since midnight -14F; normal now 19F
DAILY RECORDS FOR FEBRUARY 2016
-NONE SO FAR-
DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):
RECORDS FOR FEBRUARY 14
HIGH 56F IN 1949
LOW -14F IN 2016
PRECIP 2.09 INCHES IN 2007
SNOWFALL 11.0 INCHES IN 1914
PEAK GUST 83 MPH SSW IN 2000
RECORDS FOR FEBRUARY 15
HIGH 60F IN 1954
LOW -18F IN 1943
PRECIP 1.28 INCHES IN 1950
SNOWFALL 11.2 INCHES IN 1940
PEAK GUST 94e MPH WNW IN 1946
TODAY’S REPORT PREPARED BY: Brian Fitzgerald