National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FNUS71 KRNK 221709
FWSRNK

Spot Forecast for Sinking Creek Unit 2...USFS
National Weather Service Blacksburg VA
109 PM EDT Mon Apr 22 2024

Forecast is based on ignition time of 1500 EDT on April 22.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...
Dry today with plenty of sunshine and a light north/northwest
wind under 10 mph. RH to drop to around 25 percent
this afternoon. Should have good mixing and smoke
dispersal this afternoon.

Tuesday is about the same in terms of sunshine, maybe a
few more clouds. RH drops to 25 to 30 percent. Winds
start to turn to the southwest, with some
gusts 15 to 20 mph possible in the afternoon.
.REST OF TODAY...

Sky/weather.........Sunny (0-10 percent).
CWR (0.01 in).......0 percent.
Max temperature.....Around 61.
Min humidity........26 percent.
Wind (20 ft)........Northwest winds around 6 mph.
Mixing height.......6300 ft AGL.
Mixing winds........Northwest 6 to 8 mph.
Smoke dispersal.....Good (33000 knot-ft).
LVORI...............1.
ADI.................41 to 62.
Haines Index........5 or moderate potential for large plume
                    dominated fire growth.

TIME (EDT)      3PM 4PM 5PM
Sky (%).........3   3   4
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0
Temp............58  59  59
RH..............27  27  28
20 FT wind dir..N   N   NW
20 FT wind spd..6   6   6
20 FT wind gust.8   10  10
Mix hgt (kft)...6.3 6.3 6.2
Mixng wind dir..NW  NW  NW
Mixng wind spd..6   7   8
LVORI...........1   1   1
ADI.............41  54  62
Haines index....5   5   5
VRate mph-ft/1K.38  51  58

.TONIGHT...

Sky/weather.........Mostly clear (0-10 percent).
CWR (0.01 in).......0 percent.
Min temperature.....Around 36.
Max humidity........66 percent.
Wind (20 ft)........Northwest winds 5 to 6 mph early in the evening
                    becoming light.
Mixing height.......400 ft AGL.
Mixing winds........West 3 to 7 mph.
Smoke dispersal.....Good (42700 knot-ft) early in the evening
                    decreasing to poor (1100 knot-ft) late in the
                    night.
LVORI...............2.
ADI.................53 early in the evening decreasing to 2 late in
                    the night.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (EDT)      6 PM   8 PM   10 PM  MIDNGT 2 AM   4 AM
Sky (%).........3      1      1      2      3      9
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Temp............58     51     46     42     41     39
RH..............30     39     47     51     54     57
20 ft wind......NW 6   NW 4   NW 2   NW 2   W 3    W 3
20 ft wind gust.10     7      5                    5
Mix hgt (ft)....6200   2300   600    500    400    400
Mixing wind......NW 7   NW 5   W 3    W 3    W 3    W 3
LVORI...........1      2      2      2      2      3
ADI.............53     2      2      2      2      2
Haines index....5      5      5      5      4      4
VRate mph-ft/1K.49     3      2      2      1      1

.TUESDAY...

Sky/weather.........Sunny (15-25 percent) then becoming partly
                    sunny (50-60 percent) then becoming mostly
                    sunny (25-35 percent).
CWR (0.01 in).......0 percent.
Max temperature.....Around 71.
Min humidity........26 percent.
Wind (20 ft)........Light winds becoming southwest 5 to 8 mph with
                    gusts to around 16 mph in the late morning and
                    afternoon.
Mixing height.......5000 ft AGL.
Mixing winds........West 2 to 10 mph shifting to the southwest 14
                    to 17 mph late in the morning.
Smoke dispersal.....Poor (600 knot-ft) early in the morning
                    increasing to excellent (83000 knot-ft) in the
                    afternoon.
LVORI...............2.
ADI.................1 early in the morning increasing to 108 in the
                    afternoon.
Haines Index........4 to 5 or low to moderate potential for large
                    plume dominated fire growth.

TIME (EDT)      6 AM   8 AM   10 AM  NOON   2 PM   4 PM
Sky (%).........15     22     23     50     15     9
Weather cov.....
Weather type....NONE   NONE   NONE   NONE   NONE   NONE
Tstm cov........
CWR.............0      0      0      0      0      0
Temp............38     42     54     62     67     70
RH..............63     65     45     34     28     26
20 ft wind......W 4    W 3    SW 5   SW 6   SW 7   SW 8
20 ft wind gust.5      6      8      11     13     16
Mix hgt (ft)....400    400    2000   3500   4500   5000
Mixing wind......W 2    W 2    W 10   W 15   SW 15  SW 17
LVORI...........3      3      1      1      1      1
ADI.............1      2      31     74     93     108
Haines index....4      4      4      4      5      5
VRate mph-ft/1K.1      1      24     62     82     95

$$
Forecaster...Gruver
Requested by...Robbie Claytor
Type of request...PRESCRIBED
.TAG 2411686.1/RNK
.DELDT 04/22/24
.FormatterVersion 2.0.0
.EMAIL robert.claytor@usda.gov