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 7 8 9 10 11 12 13 14
000
FNUS71 KBOX 241136
FWSBOX

Spot Forecast for Head of the Plains Unit 2C...Nantucket Land Bank
National Weather Service Boston/Norton MA
736 AM EDT Tue Apr 24 2018

Forecast is based on ignition time of 0900 EDT on April 24.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Mostly sunny skies and southerly winds of 5 to 15 mph are
expected. Minimum afternoon relative humidity values are expected
to drop to between 40 and 50 percent.

.REST OF TODAY...

Sky/weather.........Sunny (10-20 percent).
CWR.................0 percent.
Max temperature.....Around 59.
Min humidity........47 percent.
Dewpoint............39.
Max apparent temp...59.
Surface winds.......South winds 8 to 10 mph.
Wind (20 ft)........South winds 8 to 10 mph.
Mixing height.......200-300 ft AGL.
Transport winds.....South 9 to 12 mph.
Smoke dispersal.....Poor (2100 knot-ft).
LVORI...............3.
ADI.................8.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
CEILING (KFT).......25.

TIME (EDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........8   9   11  13  16  18  18  18  18
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0
Temp............50  51  52  55  57  58  59  59  58
Dewpoint........39  39  38  38  38  38  39  39  40
RH..............66  63  59  53  49  47  47  47  51
Heat index (F)..47  51  52  55  57  58  59  59  58
20 FT wind dir..S   S   S   S   S   S   S   S   S
20 FT wind spd..8   9   9   10  10  10  10  10  10
20 FT wind gust.10  13  14  15  15  15  15  16  16
Surface wnd dir.S   S   S   S   S   S   S   S   S
Surface wnd spd.8   9   9   10  10  10  10  10  10
Surface wnd gst.10  13  14  15  15  15  15  16  16
Mix hgt (kft)...0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.2
Transp wind dir.S   S   S   S   S   S   S   S   S
Transp wind spd.9   9   9   10  10  10  10  12  12
LVORI...........3   3   3   2   2   2   2   2   2
ADI.............7   7   7   8   8   8   8   9   9
Haines index....4   4   4   4   4   4   4   4   4
VRate kt-ft/10002   2   3   3   3   3   3   3   3
Ceiling (kft)...25  25  25  25  25  25  25  25  25

.TONIGHT...

Sky/weather.........Partly cloudy (25-35 percent) then becoming
                    mostly cloudy (70-80 percent). Slight chance of
                    rain early in the morning. Chance of rain early
                    in the morning.
CWR.................0 percent increasing to 17 percent early in the
                    morning.
Min temperature.....Around 46.
Max humidity........89 percent.
Dewpoint............43.
Max apparent temp...57.
Surface winds.......Southeast winds 9 to 17 mph.
Wind (20 ft)........Southeast winds 9 to 17 mph.
Mixing height.......200 ft AGL.
Transport winds.....Southeast 12 to 18 mph.
Smoke dispersal.....Poor (1800 knot-ft).
LVORI...............4.
ADI.................12.
Haines Index........2 to 4 OR or very low potential for large plume
                    dominated fire growth to or low potential for
                    large plume dominated fire growth.
CEILING (KFT).......25 decreasing to 2.5.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........25  31  38  53  67  82  86  91  95  95  96  96
Weather cov.....                                    SCH CHC CHC
Weather type....                                    RN  RN  RN
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   20  20  20  20
Temp............57  55  54  48  47  47  47  47  47  47  48  48
Dewpoint........41  42  42  41  42  42  43  43  44  44  45  45
RH..............55  61  64  77  83  83  86  86  89  89  89  89
Heat index (F)..57  55  54  43  42  42  41  41  41  41  42  42
20 FT wind dir..S   SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..9   10  12  12  12  12  13  14  15  16  16  17
20 FT wind gust.15  14  13  17  17  16  17  20  21  22  23  24
Surface wnd dir.S   SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
Surface wnd spd.9   10  12  12  12  12  13  14  15  16  16  17
Surface wnd gst.15  14  13  17  17  16  17  20  21  22  23  24
Mix hgt (kft)...0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Transp wind dir.S   SE  SE  SE  SE  SE  SE  SE  SE  SE  SE  SE
Transp wind spd.12  12  12  13  13  14  15  16  17  17  18  18
LVORI...........2   3   3   4   4   4   4   4   5   5   5   5
ADI.............9   8   8   11  11  12  13  14  15  15  16  16
Haines index....4   4   4   3   3   2   2   2   2   2   3   3
VRate kt-ft/10002   2   2   2   2   2   2   2   2   2   2   2
Ceiling (kft)...25  25  25  25  12  9.0 6.0 4.5 3.5 3.5 3.5 2.5

$$
Forecaster...Frank
Requested by...T. Parker Schuerman
Type of request...PRESCRIBED
.TAG 1807549.0/BOX
.DELDT 04/24/18
.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.