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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Aug 12 2026
NCZ003-122000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
801 AM EDT Wed Aug 12 2026
Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26
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 87 71 91 72 91
TEMP 80 86 87 83 74 72 71 72 82 89 88 81 76 74 72 73 85 90 88 81
DEWPT 67 67 66 68 70 69 68 69 72 72 73 72 72 71 70 71 73 73 74 73
MAX/MIN RH 50 92 56 94 58
RH 65 53 50 61 87 90 90 90 72 57 61 74 87 90 93 93 67 58 63 77
WIND DIR W NW W NW W NW NW NW W W W SW W NW NW W W W W NW
WIND SPD 5 5 4 3 3 3 3 3 4 4 4 2 2 3 3 3 3 5 4 2
CLOUDS B1 SC SC FW SC FW SC FW SC SC B1 B1 SC SC SC SC SC SC B1 B1
CLOUDS(%) 64 50 38 23 37 22 42 23 32 30 57 59 40 30 31 39 41 49 51 56
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 20 10 20
RAIN SHWRS IS IS IS IS IS IS IS
TSTMS IS IS IS IS IS IS IS
MIX HGT 3 4 4 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR NW NW W SE NW NW NW N SW W W SW W W NW W NW NW NW NW
T WIND SPD 14 9 2 1 2 2 2 1 5 9 8 3 2 2 2 1 11 11 6 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 45 49 12 1 1 1 1 1 21 64 36 2 1 1 1 1 46 83 45 4
MAX LVORI 1 1 2 4 6 7 7 7 3 1 1 4 6 7 7 7 1 1 1 4
STABILITY C A A G G G F A A A B F G G G A A A B F
CEILING 15200 None None None None None None None None None
STA PRES 28.92 28.85 28.86 28.86 28.90 28.88 28.91 28.95 28.99 28.98
Date Sat 08/15/26Sun 08/16/26Mon 08/17/26Tue 08/18/26
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 72 88 71 91 73 93 71 87
TEMP 75 73 87 81 73 72 88 83 75 74 90 83 73 72 85 80
DEWPT 72 70 71 71 70 70 72 72 72 70 70 70 69 69 69 69
RH 90 90 59 72 90 93 59 70 90 87 52 65 87 90 59 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC B1 B1 SC SC B1 B1 SC FW FW SC SC SC SC B1
POP 12HR 20 30 20 30 10 20 20 30
RAIN SHWRS IS SC IS SC IS IS SC
TSTMS IS SC IS SC IS IS 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