
Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 AM EDT Fri Aug 7 2026
VAZ012-072000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
601 AM EDT Fri Aug 7 2026
Date Fri 08/07/26 Sat 08/08/26 Sun 08/09/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 83 62 83 64 84
TEMP 65 76 81 80 73 68 65 64 66 76 80 81 73 68 66 65 66 75 81 83 76
DEWPT 65 69 68 69 68 66 64 64 66 69 68 69 68 66 65 65 66 70 68 68 67
MAX/MIN RH 62 100 64 100 61
RH 100 79 65 69 84 93 97100100 79 67 67 84 93 97100100 84 65 61 74
WIND DIR W W SW S SW SW W W W W SW SW SW W W W W W W W W
WIND SPD 1 2 2 2 1 1 1 2 2 2 2 2 1 2 2 2 2 2 2 1 1
CLOUDS B1 B1 B1 B1 SC SC FW FW FW SC B1 B1 SC SC SC SC B1 SC B1 B1 SC
CLOUDS(%) 51 54 69 59 37 36 14 20 23 33 61 63 44 36 35 43 55 47 55 55 29
VSBY 1 10 7 7 10 10 1 1 10 7 6 6 10 10 10 10 7 7 7 7 10
POP 12HR 40 10 50 10 30
RAIN SHWRS SC SC IS SC SC IS IS SC SC
TSTMS SC SC IS SC SC SC SC
Obvis PF PF PF
MIX HGT <1 2 4 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR W W SW SW S SW SW W SW W W SW SW SW W W W W SW SW S
T WIND SPD 8 10 8 6 10 4 5 6 6 14 13 16 4 3 4 4 3 3 4 11 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 8 31 35 22 5 2 3 3 7 64 74 66 2 2 2 2 4 13 27 58 1
MAX LVORI 8 3 3 3 5 6 8 9 8 3 1 1 5 7 8 9 9 4 2 1 3
STABILITY B B B B G G G G A A B B F G G F B A B B G
CEILING 800 3700 None None None 2300 None None None None
STA PRES 27.47 27.42 27.41 27.40 27.41 27.39 27.38 27.37 27.39 27.36
Date Mon 08/10/26Tue 08/11/26Wed 08/12/26Thu 08/13/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 64 86 65 87 65 84 64 81
TEMP 66 66 84 78 67 67 83 77 68 66 80 74 67 66 78 73
DEWPT 65 66 67 67 65 67 69 68 66 66 69 68 66 66 69 68
RH 97100 57 69 93100 63 74 93100 69 82 97100 74 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC FW SC SC SC SC B1 B2 B1 B1 B1 B2
POP 12HR 5 10 5 20 20 60 40 60
RAIN SHWRS IS IS IS NM SC IS SC NM
TSTMS IS IS IS SC IS SC
$$
This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.
Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)
DAY 1 THROUGH 3...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew point temperature
MIN/MAX RH OR MAX/MIN RH(%).........Maximum/Minimum humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
TYPE...
RAIN...........Rain
RAIN SHWRS.....Rain showers
TSTMS..........Thunderstorms
DRIZZLE........Drizzle
SNOW...........Snow
SNOWSHWRS......Snow showers
SLEET..........Sleet
FRZG RAIN......Freezing rain
FRZG DRZL......Freezing drizzle
COVERAGE...
IS.............Isolated
SC.............Scattered
NM.............Numerous
O..............Occasional
S..............Slight chance
C..............Chance
L..............Likely
WD.............Widespread
D..............Definite
AR.............Areas
PA.............Patchy
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure
Day 4 Through 7...
MAX/MIN TEMP OR MIN/MAX TEMP(F).....Maximum/Minimum air temperature
TEMP(F).............................Air temperature
DEWPT(F)............................Dew Point temperature
RH(%)...............................Relative Humidity
WIND SPD(MPH).......................Wind Speed
Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions