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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Wed Aug 12 2026
NCZ003-130800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
731 PM EDT Wed Aug 12 2026
Date 08/12/26 Thu 08/13/26 Fri 08/14/26 Sat
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 70 91 70 90 71
TEMP 81 76 74 72 73 82 87 89 81 75 73 71 73 84 88 88 81 76 73 72 73
DEWPT 70 71 69 68 69 72 70 72 74 72 70 69 70 74 73 74 74 73 72 71 72
MIN/MAX RH 92 56 94 61 98
RH 69 85 84 87 87 72 57 57 79 90 90 93 90 72 61 63 79 90 97 97 97
WIND DIR NW NW NW NW W NW W NW NW NW NW NW NW NW W NW N NW NW NW N
WIND SPD 1 2 1 2 3 4 3 3 1 1 1 1 1 2 3 3 0 1 1 1 1
CLOUDS SC SC SC SC SC B1 SC SC B1 B1 FW SC SC B1 B1 B1 SC SC B1 B1 B1
CLOUDS(%) 31 43 36 38 38 55 48 45 59 64 18 35 43 55 67 67 44 43 51 51 51
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 20 10 50 30
RAIN SHWRS IS IS IS IS IS SC SC IS IS SC SC SC
TSTMS IS IS SC SC IS
MIX HGT <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR W N NW NW NW W W W SW NW NW NW NW SW W W SW
T WIND SPD 1 1 3 3 4 11 8 8 3 3 6 4 5 2 8 8 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 2 2 4 37 47 36 2 2 3 2 6 9 46 39 2
MAX LVORI 4 6 6 6 5 3 1 1 5 7 6 6 6 3 1 1 5
STABILITY G G G G A C A A F F G G A B B B F
CEILING None None None None None None 3800 3000 None
STA PRES 28.06 28.06 28.10 28.07 28.13 28.15 28.20 28.17
Date 08/15Sun 08/16/26Mon 08/17/26Tue 08/18/26Wed 08/19/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 88 70 89 71 91 70 89 68 88
TEMP 87 81 72 72 87 82 74 73 90 83 72 73 87 80 70 70 85 80
DEWPT 75 73 71 71 72 73 71 71 70 71 70 70 70 70 68 68 69 70
RH 68 77 97 97 61 74 90 93 52 67 93 90 57 72 93 93 59 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B1 SC FW FW FW SC SC SC B1 SC SC SC B1
POP 12HR 70 40 40 10 10 10 30 20 30
RAIN SHWRS SC NM SC IS SC SC IS SC
TSTMS SC SC SC SC IS
$$
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