Suppression Forecast
Issued by NWS Boston, MA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6
000
FNUS71 KBOX 201130
FWSBOX

Spot Forecast for Smooth Hummocks Grassland Restoration...Nantucket Land Bank
National Weather Service Taunton MA
730 AM EDT Fri Oct 20 2017

Forecast is based on ignition time of 0800 EDT on October 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
Northwest winds will gust up to 20 miles per hour today. The
winds will combine with above normal temperatures and a dry
airmass, to yield minimum relative humidity values of 30 to 40
percent. This will lead to a marginally elevated fire weather
potential today.

Another high pressure builds in behind a cold front with
continued dry conditions for Saturday. The minimum relative
humidity will generally range from 30 to 40 percent Saturday.

OUTLOOK...Sunday through Thursday...

High pressure brings an extended period of dry conditions lasting
into Monday night. Becoming increasingly likely for a period of
wet weather towards the middle of next week.

.REST OF TODAY...

Smoke dispersal.....Fair to good (20600-42300 knot-ft).
CEILING (KFT).......25.
Max temperature.....Around 66.
Dewpoint............54, decreasing to 50 early.
LVORI...............2.
CWR.................0 percent.
Wind (20 ft)........West winds 8 to 13 mph.
Min humidity........56 percent.
Sky/weather.........Sunny (0-10 percent).
Max apparent temp...65.
Surface winds.......West winds 8 to 13 mph.
Mixing height.......1400-2500 ft AGL.
ADI.................40, increasing to 42 early, then decreasing to
                    30 late.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Transport winds.....Northwest 15 to 23 mph.

TIME (EDT)      8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........5   3   2   2   2   1   1   1   1   1
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0
Temp............62  63  63  65  65  65  65  65  64  63
Dewpoint........56  55  53  51  50  50  49  50  51  52
RH..............81  75  70  60  58  58  56  58  63  67
Heat index (F)..62  63  63  65  65  65  65  65  64  63
20 FT wind dir..W   NW  NW  NW  NW  NW  NW  NW  W   W
20 FT wind spd..10  12  13  13  13  12  10  9   8   8
20 FT wind gust.18  18  20  20  18  18  17  16  16  15
Surface wnd dir.W   NW  NW  NW  NW  NW  NW  NW  W   W
Surface wnd spd.10  12  13  13  13  12  10  9   8   8
Surface wnd gst.18  18  20  20  18  18  17  16  16  15
Mix hgt (kft)...1.4 1.6 1.9 2.1 2.3 2.4 2.5 2.2 1.9 1.6
Transp wind dir.NW  NW  NW  NW  NW  NW  NW  NW  NW  NW
Transp wind spd.23  23  23  23  21  20  17  16  16  15
LVORI...........3   3   1   1   1   1   1   1   1   3
ADI.............36  40  43  46  43  42  38  43  38  30
Haines index....4   4   4   4   4   4   4   4   4   4
VRate kt-ft/100028  33  38  42  41  41  38  31  27  21
Ceiling (kft)...25  25  25  25  25  25  25  25  25  25

.TONIGHT...

Smoke dispersal.....Poor to fair (10800-19700 knot-ft).
CEILING (KFT).......25.
Min temperature.....Around 56.
Dewpoint............51.
LVORI...............4.
CWR.................0 percent.
Wind (20 ft)........North winds 6 to 8 mph.
Max humidity........78 percent.
Sky/weather.........Clear (0-10 percent).
Max apparent temp...62.
Surface winds.......North winds 6 to 8 mph.
Mixing height.......700-1700 ft AGL.
ADI.................9.
Haines Index........4 to 5 OR or low potential for large plume
                    dominated fire growth to or moderate potential
                    for large plume dominated fire growth.
Transport winds.....North 13 to 20 mph.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........1   1   1   1   1   1   2   3   4   3   3   2
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............62  61  60  60  60  60  60  60  59  59  59  59
Dewpoint........52  53  53  52  52  51  51  51  51  51  50  50
RH..............70  75  78  75  75  72  72  72  75  75  72  72
Heat index (F)..62  61  60  60  60  60  60  60  59  59  59  59
20 FT wind dir..W   W   NW  NW  NW  NW  NW  N   N   N   N   N
20 FT wind spd..7   7   7   7   8   8   8   7   7   7   6   6
20 FT wind gust.14  13  12  13  14  15  15  14  14  13  12  10
Surface wnd dir.W   W   NW  NW  NW  NW  NW  N   N   N   N   N
Surface wnd spd.7   7   7   7   8   8   8   7   7   7   6   6
Surface wnd gst.14  13  12  13  14  15  15  14  14  13  12  10
Mix hgt (kft)...1.3 1.0 0.7 0.8 0.8 0.9 1.0 1.2 1.3 1.4 1.5 1.7
Transp wind dir.NW  NW  NW  NW  NW  N   N   N   N   N   N   N
Transp wind spd.16  18  20  17  16  14  15  16  17  16  14  13
LVORI...........3   3   4   3   3   3   3   3   3   3   3   3
ADI.............11  8   9   8   11  9   10  7   8   7   6   6
Haines index....4   5   5   5   5   5   5   5   5   5   5   5
VRate kt-ft/100018  16  13  12  12  11  13  16  19  20  19  19
Ceiling (kft)...25  25  25  25  25  25  25  25  25  25  25  25

.SATURDAY...

Smoke dispersal.....Poor to fair (7200-14000 knot-ft).
CEILING (KFT).......25.
Max temperature.....Around 66.
Dewpoint............52.
LVORI...............3.
CWR.................0 percent.
Wind (20 ft)........North winds around 5 mph early in the morning,
                    becoming light and variable, then becoming
                    southwest 5 to 9 mph in the late morning and
                    afternoon.
Min humidity........58 percent.
Sky/weather.........Sunny (0-10 percent).
Max apparent temp...65.
Surface winds.......North winds around 5 mph early in the morning,
                    becoming light and variable, then becoming
                    southwest 5 to 9 mph in the late morning and
                    afternoon.
Mixing height.......1000-1600 ft AGL.
ADI.................5, increasing to 14.
Haines Index........4 to 5 OR or low potential for large plume
                    dominated fire growth to or moderate potential
                    for large plume dominated fire growth.
Transport winds.....East 6 to 10 mph, becoming southwest 9 to 10
                    mph in the afternoon.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........2      3      2      2      3      4
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Temp............59     60     63     65     65     65
Dewpoint........50     50     50     51     52     53
RH..............72     69     62     60     63     65
Heat index (F)..59     60     63     65     65     65
20 ft wind......N 5    N 3    W 5    SW 6   SW 9   SW 8
20 ft wind gust.9      6      6      7      10     12
Surface wind....N 5    N 3    W 5    SW 6   SW 9   SW 8
Surface wnd gst.9      6      6      7      10     12
Mix hgt (ft)....1600   1300   1400   1400   1100   1100
Transport wind..N 10   NE 7   E 6    SE 7   SW 10  SW 9
LVORI...........3      3      2      2      2      3
ADI.............5      12     11     12     15     12
Haines index....5      5      4      4      5      5
VRate kt-ft/100014     8      7      8      10     8
Ceiling (kft)...25     25     25     25     25     25

$$
Forecaster...Belk
Requested by...T. Parker Schuerman
Type of request...PRESCRIBED
.TAG 1717601.0/BOX
.EMAIL tschuerman@nantucketlandbank.org


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.