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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
324 AM EDT Wed Sep 16 2026
NCZ003-162000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
324 AM EDT Wed Sep 16 2026
Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26
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 63 91 69 90
TEMP 62 63 78 86 86 76 70 67 65 66 85 89 86 78 72 70 69 71 85 89 85 77
DEWPT 62 61 67 68 69 68 65 64 63 63 69 69 71 71 69 68 67 68 72 71 73 72
MAX/MIN RH 55 93 50 94 56
RH 100 93 69 55 57 76 84 90 93 90 59 52 61 79 90 93 93 90 65 56 67 85
WIND DIR N N SE SE SE N N N N NW N SW W NW NW NW NW NW N N N N
WIND SPD 0 0 1 4 4 0 0 0 0 1 0 2 2 1 1 1 2 3 5 4 4 2
CLOUDS SC FW FW FW FW CL FW FW SC FW SC B1 B1 FW SC SC FW FW SC B2 B2 B1
CLOUDS(%) 31 23 13 11 14 3 13 24 31 17 26 57 54 24 32 27 22 18 36 75 75 67
VSBY 6 5 10 10 10 10 10 10 9 4 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 40 5 60
RAIN SHWRS SC SC NM NM SC
TSTMS SC SC SC SC SC
Obvis PF PF
MIX HGT <1 <1 2 4 4 <1 <1 <1 <1 <1 2 5 2 <1 <1 <1 <1 <1 3 5 2 <1
T WIND DIR N N NW NE SE S W NW NW NW W NW W SW NW NW NW NW N N N N
T WIND SPD 1 1 1 5 2 3 2 2 3 4 1 4 5 4 3 3 4 6 12 10 12 6
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 3 27 10 2 1 1 2 4 4 18 16 2 2 2 2 7 50 61 25 3
MAX LVORI 10 8 3 2 2 3 5 7 7 6 3 2 2 5 7 7 6 5 1 1 3 5
STABILITY G A A B B G G G G A A C C G G G G B B B D F
CEILING None None None None None None None None None 16300
STA PRES 28.46 28.41 28.41 28.38 28.37 28.28 28.26 28.23 28.25 28.22
Date Sat 09/19/26Sun 09/20/26Mon 09/21/26Tue 09/22/26
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 67 81 65 86 65 85 65 80
TEMP 70 67 78 75 68 66 83 77 69 67 83 76 68 67 78 74
DEWPT 69 66 69 69 66 66 70 71 67 66 71 71 67 66 70 70
RH 97 97 74 82 93100 65 82 93 97 67 85 97 97 76 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B1 SC B1 B1 B1 SC SC SC B1 B1 B2 B2 B2
POP 12HR 50 30 20 50 20 50 50 60
RAIN SHWRS SC IS IS SC IS SC IS IS SC SC SC SC NM
TSTMS SC IS IS SC IS 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