
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 >
Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Aug 9 2026
NCZ003-092000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 AM EDT Sun Aug 9 2026
Date Sun 08/09/26 Mon 08/10/26 Tue 08/11/26
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 88 69 89 70 89
TEMP 82 86 84 79 73 71 69 71 83 87 87 81 74 71 70 73 84 88 87 80
DEWPT 73 73 74 74 71 69 67 69 73 73 73 74 71 70 69 70 74 73 73 73
MAX/MIN RH 64 95 61 96 60
RH 74 65 72 85 93 93 93 93 72 63 63 79 90 97 97 90 72 61 63 79
WIND DIR N S SW N N N NW NW W W W W W NW NW NW NW W W W
WIND SPD 0 1 2 0 0 0 1 1 2 3 4 1 2 1 2 3 4 4 4 2
CLOUDS FW B1 SC B1 B1 SC SC SC SC SC FW SC SC FW FW FW SC SC SC SC
CLOUDS(%) 21 57 50 54 58 27 29 39 30 42 20 32 29 12 10 18 32 38 38 28
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 7 7 10
POP 12HR 40 5 5 0 20
RAIN SHWRS SC SC IS IS
TSTMS SC SC IS IS
MIX HGT 3 5 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR NW SW SW SW SW W NW NW W W W W NW W NW NW NW NW NE SW
T WIND SPD 4 2 9 4 3 3 4 4 10 10 11 6 5 6 11 13 10 10 6 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 17 13 31 2 2 2 2 4 37 70 45 3 3 3 5 13 36 60 36 3
MAX LVORI 3 3 3 5 7 7 6 6 3 1 1 5 6 6 7 5 3 1 1 5
STABILITY A B A F F G G A A A A G G G G A A A A G
CEILING None None None None None None None None None None
STA PRES 28.26 28.22 28.21 28.22 28.22 28.17 28.20 28.19 28.22 28.19
Date Wed 08/12/26Thu 08/13/26Fri 08/14/26Sat 08/15/26
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 70 88 69 88 69 83 67 83
TEMP 71 72 87 81 72 72 85 81 71 71 81 77 69 69 81 77
DEWPT 69 70 73 73 70 70 73 74 70 70 73 73 68 68 71 72
RH 93 93 63 77 93 93 67 79 97 97 77 87 97 97 72 85
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC B1 B1 B1 B1 B2 B2 B1 B1 B1
POP 12HR 10 20 20 30 10 60 30 30
RAIN SHWRS IS IS SC SC NM SC SC SC SC
TSTMS IS IS SC 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