Friday, May 23, 2014

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

DAILY DISCUSSION AND CLIMATE SUMMARY
FRIDAY, MAY 23, 2014
ALL TIMES ARE IN EASTERN STANDARD TIME

SHOWERS YESTERDAY AFTERNOON WRAP UP THIS MORNING WITH
CONTINUED FOGGY AND HUMID CONDITIONS

Rain showers began yesterday afternoon at 12:24 PM EST increasing
in intensity over the couple of hours. Another round of showers
and drizzle this morning combined with yesterday’s precipitation
totaled 0.31 inches.

Fog has dissipated and reformed throughout the day with rain showers
re-entering the picture by this afternoon’s 1:00 PM EST observations.

BHO IN THE NEWS:

Blue Hill Observatory and Science Center played host to NECN’s Chief
Meteorologist Matt Noyes this morning, showcasing the history and people
that make BHO so special. A big thanks to the whole NECN crew for
spending their morning with us!

Today’s Observations:

7 A.M.
Weather: Partial fog, broken stratocumulus, overcast altocumulus,
fog below station in all directions and dissipating, breaks
in overcast distant S
Temperature: 54F; Dew Point: 52F; Wind: SE at 1 kts
Wind Speed and Direction: Light and variable
Sea-level pressure: 29.91 ins. Hg, increasing, then more slowly
Visibility: 6 miles, 3 miles NW-NE, 8 miles S, obscured by fog
6-hr max temp: 54F
6-hr min temp: 52F
24-hr precip: 0.31
BHO SA 1155 E20 BKN 50 OVC 6F 130/54/52/E1401/991/
FG BLOW STA ALQDS FG DSPTNG VSBY NW-NE 3 MI VSBY S 8 MI
BINOVC BRKS DSNT S WND LGT AND VRB/ 8/51/
ASOS 70031 MANUAL 70031 10054 20052

10 A.M.
Weather: Overcast stratus, few stratus fractus distant NNE
Temperature: 57F; Dew Point: 54F; Wind: E at 4 kts,
Wind Speed: Light
Sea-level pressure: 29.92 ins. Hg, increasing, then more quickly
Visibility: 25 miles, 12 miles SW-N, obscured by thin fog
BHO SA 1455 E16 OVC 25 133/57/54/E0804/992/ FEW STFRA DSNT NNE
VSBY SW-N 12 MI THN FG ALQDS WND LGT/ 8/6// 53008

1 P.M.
Weather: Scattered stratocumulus, broken stratus, broken altostratus,
overcast cirrostratus, showers distant SW-WNW
Temperature: 57F; Dew Point: 51F; Wind: NE at 7 kts,
Sea-level pressure: 29.91 ins. Hg, decreasing, then steady
Visibility: 30 miles, 15 miles SW-WNW, obscured by rain showers and
thin fog in all directions
6-hr max temp: 60F
6-hr min temp: 53F
6-hr precip: none
BHO SA 1755 13 SCT E40 BKN 130 BKN 240 OVC 30 130/57/51/0507/991/
SHWRS DSNT SW-WNW VSBY SW-WNW 15 MI THN FG ALQDS/
8/626/ 56003 10060 20053

WEATHER SUMMARY FOR THURSDAY, MAY 22, 2014

TEMPERATURE (DEGREES F)
MAX…..67    NORMAL…..68
MIN…..51    NORMAL…..50
MEAN….59    NORMAL…..59

DEPARTURE FROM 30-YEAR NORMAL……………………..+0
TOTAL DEPARTURE FOR THE MONTH…………………….+72 [+3.0 DEGREES/DAY]

HEATING DEGREE DAYS (SEASON JUL TO JUN)
TOTAL HEATING UNITS FOR YESTERDAY……………6  DEPARTURE……….-1
TOTAL HEATING UNITS FOR THE MONTH………….142  DEPARTURE………-73
TOTAL HEATING UNITS FOR THE SEASON………..6313  DEPARTURE………+63
TOTAL HEATING UNITS LAST SEASON TO DATE……5680  DIFFERENCE…….+633

COOLING DEGREE DAYS (SEASON JAN-DEC)
TOTAL COOLING UNITS FOR YESTERDAY…………..0   DEPARTURE……….-1
TOTAL COOLING UNITS FOR THE MONTH………….13   DEPARTURE……….+3
TOTAL COOLING UNITS FOR THE SEASON…………13   DEPARTURE……….+1
TOTAL COOLING UNITS LAST SEASON TO DATE……..6   DIFFERENCE………+7

PEAK GUST AND AVERAGE WIND SPEED (MPH)
PEAK WIND GUST FOR YESTERDAY………………15  SSE  AT  3:30 P.M *
ASOS…………………..17  S    AT  1:57 P.M.
DAVIS………………….17  SE   AT  1:46 P.M. RMY 18
FASTEST MILE FOR YESTERDAY………………..13  SSE  AT  1:50 P.M.
MAXIMUM 2-MINUTE ASOS AVERAGE……………..12  S    AT  4:15 P.M.
MAXIMUM 2-MINUTE DAVIS AVERAGE…………….13  SE   AT  1:47 P.M.
AVERAGE WIND SPEED AND DIRECTION…………. 5.9
ASOS…………………..6.2
DAVIS………………….5.5 SSE [148 deg] * Last of several occurrences…

PRECIPITATION (INCHES) THROUGH THIS MORNING (EST)
TOTAL PRECIPITATION 24 HRS ENDING 7 A.M….0.31  DEPARTURE………….+0.17
ASOS…………..0.31
TOTAL PRECIPITATION FOR THE MONTH……….2.39  DEPARTURE………….-0.36
ASOS…………..2.40
TOTAL PRECIPITATION FOR THE YEAR……….21.51  DEPARTURE………….+0.21
ASOS………….21.93

SNOWFALL (INCHES) THROUGH THIS MORNING (EST)
TOTAL SNOWFALL 24 HRS ENDING 7 A.M……….0.0  DEPARTURE……………0.0
TOTAL SNOWFALL FOR THE MONTH…………….0.0  DEPARTURE……………0.0
TOTAL SNOWFALL FOR THE SEASON…………..85.6  DEPARTURE………….+22.9

PRELIMINARY CLIMATE SUMMARY FOR MAY 2014 CALENDAR DAY DATA
DATA REPORTED:
DATE: MAX/MIN/MEAN/DEP/PRECIP/SNOW/SUN(MIN.)/SUN(%)/ PEAK GUST/RMY 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

5/1  64/43/54/+1/0.49/0.0/093/11          32 SSE RMY 36
5/2  68/51/60/+7/T/0.0/457/54             28 W   RMY 29
5/3  66/48/57/+4/0.00/0.0/332/39          21 SW  RMY N/A
5/4  60/47/54/0/0.01/0.0/400/47           51 WNW RMY 54
5/5  64/46/55/+1/T/0.0/592/70             30 NW  RMY 32
5/6  63/42/53/-1/T/0.0/506/59             30 NW  RMY 30
5/7  64/42/55/0/0.00/0.0/850/99           21 WNW RMY 23
5/8  69/48/59/+4/0.00/0.0/612/71          17 SSW RMY 19
5/9  57/51/54/-1/0.05/0.0/000/00          21 S   RMY N/A
5/10 78/57/68/+13/0.10/0.0/043/05         33 S   RMY 37
5/11 79/58/69/+13/0.01/0.0/746/86         30 W   RMY N/A
5/12 85/49/67/+11/0.00/0.0/792/91         39 NE  RMY 42
5/13 54/42/48/-8/0.00/0.0/113/13          32 NE  RMY N/A
5/14 73/42/58/+1/T/ 0.0/613/70            22 S   RMY 24
5/15 77/57/67/+10/T/0.0/140/16            27 S   RMY 33
5/16 73/60/67/+10/0.26/0.0/…/..         36 S   RMY 41
5/17 74/52/63/+6/1.04/0.0/…/..          36 SSE RMY N/A
5/18 67/47/57/-1/0.00/0.0/…/..          20 NW  RMY N/A
5/19 65/48/56/-2/0.12/0.0/…/..          35 NNW RMY 38
5/20 71/48/60/+2/T/0.0/…/..             25 NNW RMY 26
5/21 71/51/61/+2/0.00/0.0/…/..          18 ESE RMY 20
5/22 67/51/59/0/…./0.0/…/..           15 SSE RMY 18

5/23  morning low temp: 52F; the normal low is now 50F

DAILY RECORDS FOR MAY 2014
None so far.

DAILY EXTREMES
Temperature and precipitation records back to 1885, and
wind records back to 1940 (e = estimated):

RECORDS FOR MAY 23
HIGH 92F IN 1964,1992
LOW 38F IN 1976
PRECIP 0.97 INS IN 1979
PEAK GUST 49e MPH W IN 1945

RECORDS FOR MAY 24
HIGH 92F IN 1964
LOW 35F IN 1956
PRECIP 2.13 INS IN 1951
PEAK GUST 54 MPH NNE IN 2005

TODAY’S REPORT PREPARED BY: Brian Fitzgerald