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FNUS51 KRNK 211825
FWFRNK
Fire Weather Planning Forecast for SW VA...SE WV and NW NC
National Weather Service Blacksburg VA
225 PM EDT Tue Jul 21 2026
.DISCUSSION...
Widespread showers and thunderstorms continue through Wednesday as
a cold front slowly sinks south through the region. There will
continue to be quite a bit of lightning through Thursday. A drier
air mass tries to build into SE WV and parts of central VA
Thursday, while moist air remains elsewhere. Additional chances
for wetting rain are expected in these more humid locations
Thursday and Friday. More widespread showers and storms are
forecast for the weekend. Overall, there are only low fire
weather concerns at this time given the wetting rains expected.
WVZ042-220815-
Mercer-
Including the cities of Bluefield and Flat Top
225 PM EDT Tue Jul 21 2026
Tonight Wed Wed Night Thu
Cloud Cover Mcldy Pcldy Pcldy Pcldy
Precip Type Tstms Tstms Tstms Showers
Chance Precip (%) 90 40 30 30
Chance of Thunder (%) 70 40 30 0
Min/Max Temp 65 78 57 75
Max/Min RH % 100 73 100 69
Wind 20ft/early(mph) W 7 G20 W 4 NW 3 Lgt/Var
Wind 20ft/late(mph) W 6 G19 W 4 Lgt/Var Lgt/Var
Precip Amount 0.76 0.17 0.03 0.00
Precip Duration 9 2 1 1
Precip Begin 6 PM Continuing Continuing 2 PM
Precip End Continuing Continuing 12 AM Continuing
Mixing Hgt(ft-agl) 3920 4290
Transport Wnd (mph) W 13 W 2
Vent Rate (mph-ft) 50960 8580
Dispersion Fair Very Poor
Max ADI Early 44 Gen Good 44 Gen Good 33 Fair 17 Gen Poor
Max ADI Late 10 Poor 57 Gen Good 3 Very Poor 14 Gen Poor
Max LVORI Early 5 7 7 9
Max LVORI Late 8 4 9 3
Remarks...None.
.FORECAST FOR DAYS 3 THROUGH 7...
.THURSDAY NIGHT...Mostly cloudy with a slight chance of showers.
Lows in the upper 50s. Southeast winds 5 to 10 mph.
.FRIDAY...Mostly cloudy with a slight chance of showers and
thunderstorms. Highs in the lower 70s. Minimum RH 75 percent.
Southeast winds 5 to 10 mph.
.FRIDAY NIGHT...Mostly cloudy with showers likely and a slight
chance of thunderstorms. Lows in the lower 60s. Southeast winds
around 5 mph.
.SATURDAY...Mostly cloudy with showers likely and a chance of
thunderstorms. Highs in the lower 70s. Minimum RH 82 percent.
Southeast winds around 5 mph.
.SATURDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the lower 60s. South
winds around 5 mph.
.SUNDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the upper 70s. Minimum RH 69 percent.
West winds around 5 mph.
.SUNDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. West winds
around 5 mph.
.MONDAY...Partly sunny with a chance of showers and
thunderstorms. Highs in the lower 80s. Minimum RH 69 percent.
West winds 5 to 10 mph.
.MONDAY NIGHT...Mostly cloudy with a chance of showers and a
slight chance of thunderstorms. Lows in the mid 60s. West winds
around 5 mph.
.TUESDAY...Partly sunny with a chance of showers and
thunderstorms. Highs around 80. Minimum RH 66 percent. West winds
around 5 mph.
.OUTLOOK 8 TO 14 DAYS...
Temperatures above normal. Precipitation near normal.