Spot Forecast
Issued by NWS Sterling, VA

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 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34
000
FNUS71 KLWX 161402
FWSLWX

Spot Forecast for Clrment 4.16.24...Nature Works
National Weather Service Baltimore MD/Washington DC
1002 AM EDT Tue Apr 16 2024

Forecast is based on ignition time of 1100 EDT on April 16.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office if you have questions
or concerns with this forecast.

.DISCUSSION...

A cold front will slowly drift south of the area today before
stalling near the Virginia-North Carolina border. By this evening,
this boundary will return northeastward as a warm front before
drifting across the area on Wednesday. A weak cold front tracks
through on Thursday before a stronger frontal system moves
through early in the weekend. Above normal temperatures are likely
until Saturday before turning much cooler by Sunday.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Temperature.........66 at ignition...Max 76.
RH..................34 percent at ignition...Min 27 percent.
Eye level winds.....Southeast winds up to 4 mph shifting to the
                    south around 4 mph late in the afternoon.
Wind (20 ft)........Winds southeast at 5 mph at
                    ignition...otherwise South winds 5 to 6 mph.
Transport winds.....East 6 to 7 mph shifting to the south around 7
                    mph in the afternoon.
Smoke dispersal.....Fair /15600 knot-ft/ at ignition. Max...fair
                    /23400 knot-ft/.
Haines Index........3 or very low potential for large plume
                    dominated fire growth at ignition...max 5.

TIME (EDT)      11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  33  36  39  37  35  32
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0
Temp............66  69  71  73  75  76  76
RH..............34  31  29  27  27  27  30
20 FT wind dir..SE  SE  S   S   S   S   S
20 FT wind spd..5   5   6   6   6   6   6
20 FT wind gust.7   7   8   8   8   8   8
Eye lvl wnd dir.SE  SE  S   S   S   S   S
Eye lvl wnd spd.3   3   4   4   4   4   4
Eye lvl wnd gst.4   4   5   5   5   5   5
Transp wind dir.E   SE  S   S   S   S   S
Transp wind spd.6   7   7   7   7   7   7
Haines index....3   3   4   4   4   5   5
Vrate kt-ft/1K..16  22  23  23  23  23  20
Ventrate Cat....PR  PR  PR  PR  PR  PR  PR

.TONIGHT...

Sky/weather.........Partly cloudy (35-45 percent) then becoming
                    mostly cloudy (60-70 percent). Isolated rain
                    showers overnight. Scattered rain showers early
                    in the morning.
CWR.................0 percent increasing to 30 percent.
Temperature.........Min 55.
RH..................Max 72 percent.
Eye level winds.....South winds up to 4 mph.
Wind (20 ft)........South winds 5 to 6 mph.
Transport winds.....Southeast 5 to 7 mph.
Smoke dispersal.....Poor (0 knot-ft).
Haines Index........2 to 5 or very low to moderate potential for
                    large plume dominated fire growth.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........37     47     61     71     77     78
Weather cov.....                            ISOLTD ISOLTD
Weather type....NONE   NONE   NONE   NONE   RNSHWR RNSHWR
Tstm cov........
CWR.............0      0      0      0      20     20
Temp............74     68     63     59     58     57
RH..............32     40     54     62     59     59
20 ft wind......S 6    S 5    S 6    S 6    S 6    S 6
20 ft wind gust.7      7      7      8      8      8
Eye level wind..S 4    S 3    S 4    S 4    S 4    S 4
Eye lvl wnd gst.       4             5      5      5
Transport wind..S 6    SE 5   SE 5   SE 6   S 7    S 7
Haines index....5      4      4      3      2      2
Vrate kt-ft/1K..12     0      0      0      1      0
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR

.WEDNESDAY...

Sky/weather.........Mostly cloudy (80-90 percent). Rain showers
                    likely in the morning, then chance of rain
                    showers and slight chance of thunderstorms in
                    the afternoon.
CWR.................30 percent increasing to 70 percent early in
                    the morning, then decreasing to 40 percent late
                    in the morning increasing to 50 percent late in
                    the afternoon.
Temperature.........Max 72.
RH..................Min 59 percent.
Eye level winds.....Southeast winds up to 5 mph.
Wind (20 ft)........Southeast winds 5 to 9 mph. Gusty and erratic
                    winds expected near thunderstorms late in the
                    afternoon.
Transport winds.....Southeast 8 to 12 mph.
Smoke dispersal.....Poor (1300 knot-ft).
Haines Index........2 to 3 or very low potential for large plume
                    dominated fire growth.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........83     91     90     90     91     88
Weather cov.....SCTTRD LIKELY LIKELY CHANCE CHANCE CHANCE
Weather type....RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR RNSHWR
Tstm cov........
CWR.............30     70     70     40     40     40
Temp............56     56     59     64     66     68
RH..............64     72     69     67     68     65
20 ft wind......S 6    S 6    S 6    SE 6   SE 8   SE 9
20 ft wind gust.8      8      8      9      12     13
Eye level wind..S 4    S 4    S 4    SE 4   SE 5   SE 5
Eye lvl wnd gst.5      5      5      5      7      8
Transport wind..S 8    S 10   S 12   S 12   S 9    SE 8
Haines index....2      2      2      2      3      3
Vrate kt-ft/1K..1      4      5      10     13     7
Ventrate Cat....POOR   POOR   POOR   POOR   POOR   POOR

$$
Forecaster...Rosa
Requested by...James r remuzzi
Type of request...PRESCRIBED
.TAG 2411108.0/LWX
.DELDT 04/16/24
.FormatterVersion 2.0.0
.EMAIL James@natureworksllc.net


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