308
FNUS71 KLWX 181312
FWSLWX

Spot Forecast for Berrybrook Rx...VDOF
National Weather Service Baltimore MD/Washington DC
912 AM EDT Fri Apr 18 2025

Forecast is based on ignition time of 0900 EDT on April 18.
If conditions become unrepresentative...contact the National Weather
Service.

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

.DISCUSSION...

High pressure will shift further offshore today, bringing dry and
warm conditions. Minimum RH today will be around 30-35 percent,
with south winds around 15 mph, gusting to 25-30 mph. This is
going to result in excellent smoke dispersion this afternoon.

A warm front lifts north through the area tonight, bringing an
increase in moisture with RH recovering to 70-75 pct. High
pressure to the south dominate the weather pattern for Saturday,
with temperatures well into the 80s and dry. South-southwest winds
slightly lower than today, though smoke dispersion is still very
good to near excellent.

.REST OF TODAY...

Sky/weather.........Mostly sunny (30-40 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 79.
Min humidity........32 percent.
Wind (20 ft)........South winds 7 to 10 mph increasing to around 17
                    mph with gusts to around 28 mph late in the
                    afternoon.
Mixing height.......5700 ft AGL.
Transport winds.....South 15 to 20 mph shifting to the southwest 24
                    to 28 mph in the afternoon.
Smoke dispersal.....Fair (14000 knot-ft) early in the morning
                    increasing to excellent (82100 knot-ft) in the
                    afternoon increasing to excellent (116100
                    knot-ft) late in the afternoon.

TIME (EDT)      9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........33  40  46  47  48  48  39  29  19
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0
Temp............52  57  63  67  72  75  77  79  79
RH..............74  64  52  45  39  36  33  32  32
20 FT wind dir..S   S   S   S   S   S   S   S   S
20 FT wind spd..7   9   10  12  14  15  16  17  17
20 FT wind gust.14  17  20  22  23  24  25  26  28
Mix hgt (kft)...1.1 1.3 2.0 2.7 3.9 5.0 5.5 5.5 5.7
Transp wind dir.S   S   S   S   S   SW  SW  SW  SW
Transp wind spd.15  14  17  20  24  26  28  28  28
Vrate kt-ft/1K..14  16  30  46  82  116 133 133 136
Ventrate Cat....PR  PR  PR  FR  GD  VGD VGD VGD VGD

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent) then becoming
                    mostly cloudy (65-75 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Min temperature.....Around 62.
Max humidity........74 percent.
Wind (20 ft)........South winds 13 to 16 mph.
Mixing height.......400 ft AGL.
Transport winds.....Southwest 16 to 25 mph.
Smoke dispersal.....Excellent (85500 knot-ft) early in the evening
                    decreasing to poor (6400 knot-ft) late in the
                    night.

TIME (EDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........22  24  26  25  23  22  26  31  35  49  62  75
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............78  76  73  69  68  66  66  65  64  64  63  62
RH..............35  37  41  49  51  53  54  58  61  63  68  71
20 FT wind dir..S   S   S   S   S   S   S   SW  SW  SW  S   S
20 FT wind spd..16  14  13  13  13  14  14  14  14  14  13  13
20 FT wind gust.26  24  23  24  25  26  26  26  26  26  25  25
Mix hgt (kft)...3.9 1.1 0.5 0.4 0.5 0.5 0.5 0.5 0.5 0.4 0.5 0.5
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.25  20  17  18  18  18  18  18  18  18  16  16
Vrate kt-ft/1K..86  19  8   6   7   8   8   8   8   7   7   7
Ventrate Cat....GD  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR  PR

.SATURDAY...

Sky/weather.........Mostly cloudy (70-80 percent).
CWR.................0 percent.
Chance of thunder...0 percent.
Max temperature.....Around 84.
Min humidity........40 percent.
Wind (20 ft)........Southwest winds 12 to 14 mph with gusts to
                    around 25 mph.
Mixing height.......4400 ft AGL.
Transport winds.....Southwest 16 to 25 mph.
Smoke dispersal.....Poor (6600 knot-ft) early in the morning
                    increasing to excellent (96300 knot-ft) in the
                    afternoon.

TIME (EDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........80  85  90  81  71  62  60  59  57  58  60  61
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Chc of thdr (%).0   0   0   0   0   0   0   0   0   0   0   0
Temp............64  63  64  67  70  73  77  79  81  83  84  84
RH..............71  73  74  68  61  57  52  49  46  42  40  40
20 FT wind dir..S   S   S   S   SW  SW  SW  SW  SW  SW  SW  SW
20 FT wind spd..13  13  13  13  12  12  12  13  13  14  14  14
20 FT wind gust.25  25  25  25  24  24  23  22  22  22  23  23
Mix hgt (kft)...0.5 0.5 0.8 1.3 1.5 2.0 2.7 3.5 4.1 4.4 3.8 2.7
Transp wind dir.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Transp wind spd.16  16  18  22  21  21  21  23  24  25  24  23
Vrate kt-ft/1K..7   7   13  24  27  36  49  70  86  96  80  55
Ventrate Cat....PR  PR  PR  PR  PR  PR  FR  GD  GD  GD  GD  FR

$$
Forecaster...Rodriguez
Requested by...Falkenau
Type of request...PRESCRIBED
.TAG 2510992.0/LWX
.DELDT 04/18/25
.FormatterVersion 2.0.0
.EMAIL jeremey.falkenau@dof.virginia.gov