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FNUS51 KRNK 181820
FWFRNK
Fire Weather Planning Forecast for SW VA...SE WV and NW NC
National Weather Service Blacksburg VA
220 PM EDT Tue Aug 18 2026
.DISCUSSION...
A cold front has passed across the lower Mid-Atlantic,
resulting in seasonal temperatures for today and likely Wednesday.
Widely scattered showers and a few thunderstorms will continue
to develop this afternoon and evening, with the highest coverage
expected to occur to the east of Highway 29. Otherwise, a mixture
of clouds and sunshine during the afternoon, with minimum relative
humidity holding above 40 percent. Winds today will shift increasingly
from the northwest, with gusts during the afternoon increasing into
the 10 mph to 15 mph range. Increased coverage of wetting rainfall
will return on Thursday through Saturday as another front drifts slowly
across the lower Mid-Atlantic.
WVZ042-190830-
Mercer-
Including the cities of Bluefield and Flat Top
220 PM EDT Tue Aug 18 2026
Tonight Wed Wed Night Thu
Cloud Cover Mclear Mclear Mclear Pcldy
Precip Type None None None Tstms
Chance Precip (%) 0 0 0 60
Chance of Thunder (%) 0 0 0 50
Min/Max Temp 60 83 63 81
Max/Min RH % 100 50 93 67
Wind 20ft/early(mph) Lgt/Var Lgt/Var Lgt/Var Lgt/Var
Wind 20ft/late(mph) Lgt/Var Lgt/Var Lgt/Var W 4
Precip Amount 0.00 0.00 0.00 0.03
Precip Duration 4
Precip Begin 8 AM
Precip End Continuing
Mixing Hgt(ft-agl) 4840 4000
Transport Wnd (mph) NW 12 W 31
Vent Rate (mph-ft) 58080 124000
Dispersion Very Poor Very Poor
Max ADI Early 47 Gen Good 39 Fair 45 Gen Good 33 Fair
Max ADI Late 3 Very Poor 60 Gen Good 2 Very Poor 115 Very Good
Max LVORI Early 9 9 5 7
Max LVORI Late 9 1 7 3
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. West winds
around 5 mph.
.FRIDAY...Showers and a chance of thunderstorms. Highs in the
upper 70s. Minimum RH 77 percent. South winds around 5 mph.
.FRIDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds around 5 mph.
.SATURDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the upper 70s. Minimum RH 67 percent.
West winds around 5 mph.
.SATURDAY NIGHT...Partly cloudy with a slight chance of showers
and thunderstorms. Lows around 60. West winds around 5 mph.
.SUNDAY...Mostly sunny with a slight chance of showers. Highs in
the mid 70s. Minimum RH 63 percent. West winds 5 to 10 mph.
.SUNDAY NIGHT...Mostly clear. Lows in the upper 50s. Northwest
winds around 5 mph.
.MONDAY...Sunny. Highs in the upper 70s. Minimum RH 57 percent.
West winds around 5 mph.
.MONDAY NIGHT...Partly cloudy. Lows in the upper 50s. Northwest
winds around 5 mph.
.TUESDAY...Mostly sunny with a slight chance of showers and
thunderstorms. Highs in the upper 70s. Minimum RH 57 percent.
West winds around 5 mph.
.OUTLOOK 8 TO 14 DAYS...
Temperatures near normal. Precipitation above normal.