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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Aug 12 2026
NCZ003-130800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
231 AM EDT Wed Aug 12 2026
Date 08/11/26 Wed 08/12/26 Thu 08/13/26 Fri
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 68 86 70 91 71
TEMP 68 70 79 85 85 79 74 71 71 72 85 90 87 81 75 73 72 74
DEWPT 62 65 68 68 66 67 70 69 68 70 73 73 74 75 72 71 69 71
MIN/MAX RH 87 53 93 58 93
RH 81 84 69 57 53 67 87 93 90 93 67 58 65 82 90 93 90 90
WIND DIR NW W W NW NW NW NW NW NW W W W W W NW NW NW NW
WIND SPD 4 4 6 5 4 2 2 1 2 3 3 3 3 1 1 1 1 2
WIND GUST 14
CLOUDS B2 SC B1 B1 SC FW SC FW SC SC SC B1 B1 B1 SC SC SC SC
CLOUDS(%) 71 46 63 61 33 19 37 23 38 42 48 55 54 61 44 33 33 41
VSBY 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 20 20 5
RAIN SHWRS IS IS IS
TSTMS IS IS IS
MIX HGT <1 <1 3 3 4 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1
T WIND DIR NW N N NW W SW NW NW NW N W W SW W W NW NW NW
T WIND SPD 5 20 16 13 6 1 3 3 3 3 6 10 6 3 3 5 8 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 4 20 53 58 35 1 2 2 2 3 27 62 30 2 2 3 4 8
MAX LVORI 5 4 1 1 1 4 7 7 7 6 3 1 3 5 7 6 6 5
STABILITY E A B B A G G G G A A B B F F G G A
CEILING 11400 30000 None None None None None None None
STA PRES 28.10 28.11 28.04 28.06 28.05 28.10 28.07 28.10 28.14
Date 08/14Sat 08/15/26Sun 08/16/26Mon 08/17/26Tue 08/18/26
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 91 71 88 70 90 72 91 69 87
TEMP 89 82 73 73 87 81 72 72 87 83 74 74 89 83 72 71 84 80
DEWPT 74 75 72 71 73 74 70 70 74 75 71 70 71 72 69 69 71 70
RH 61 79 97 93 63 79 93 93 65 77 90 87 56 70 90 93 65 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 B2 B1 SC SC B1 SC FW FW SC SC SC SC B1
POP 12HR 30 20 60 30 30 10 20 10 30
RAIN SHWRS SC IS IS IS NM SC SC IS SC
TSTMS SC IS SC SC SC 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