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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 AM EDT Thu Aug 13 2026
NCZ003-140800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
101 AM EDT Thu Aug 13 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 71 91 71 90 71
TEMP 75 73 75 83 88 90 81 76 74 72 73 82 87 87 80 76 74 73 72
DEWPT 69 68 69 71 69 70 72 72 71 70 70 72 72 73 73 72 72 71 71
MIN/MAX RH 87 53 93 60 98
RH 82 84 82 67 54 52 74 87 90 93 90 72 61 63 79 87 93 93 97
WIND DIR NW NW W NW W W NW N N NE NE N W W W NW N N NE
WIND SPD 3 4 3 4 4 4 2 3 3 3 3 3 3 3 2 3 3 3 3
CLOUDS SC FW B1 B1 SC SC SC SC SC SC SC B2 B1 B1 B1 B1 B1 SC B1
CLOUDS(%) 36 25 58 52 43 39 41 45 50 43 45 70 57 57 53 52 52 50 54
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 20 10 40 30
RAIN SHWRS IS SC SC SC SC
TSTMS IS SC SC IS
MIX HGT <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR NW NW NW NW W W SW SW NW NW NW W W W SW
T WIND SPD 3 2 1 8 9 10 4 3 3 2 2 1 5 5 8
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 30 56 48 2 2 2 1 2 4 33 29 4
MAX LVORI 5 5 5 3 1 1 4 6 7 7 6 3 1 2 4
STABILITY G G A A A A F F G G A B B B F
CEILING None None None None None 3700 None None
STA PRES 28.86 28.91 28.87 28.93 28.96 29.01 28.96
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 87 70 89 72 92 71 89 69 88
TEMP 86 81 73 71 87 83 75 73 90 83 74 72 86 80 72 71 85 80
DEWPT 73 71 71 71 71 71 72 71 70 69 70 70 69 68 69 68 68 68
RH 65 72 93100 59 67 90 93 52 63 87 93 57 67 90 90 57 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 SC SC B1 SC FW FW SC SC SC SC B1 SC SC SC SC
POP 12HR 50 40 30 10 10 10 30 20 20
RAIN SHWRS SC SC SC SC IS IS
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