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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Tue Sep 8 2026
NCZ001-082000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
431 AM EDT Tue Sep 8 2026
Date Tue 09/08/26 Wed 09/09/26 Thu 09/10/26
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 70 56 74 60 76
TEMP 56 56 62 66 68 61 59 58 57 56 67 71 72 64 63 62 61 62 68 73 75 68
DEWPT 55 55 58 58 59 57 55 54 52 52 56 58 59 59 58 57 57 57 60 61 61 61
MAX/MIN RH 69 88 60 88 62
RH 96 96 87 75 73 87 87 86 83 86 68 63 64 84 84 84 87 84 76 66 62 78
WIND DIR S S S SE S S S S S SW SW S S S SW SW W W W W W W
WIND SPD 6 4 6 5 5 5 5 6 5 4 3 3 5 4 8 10 10 12 12 9 9 6
CLOUDS SC SC FW SC SC SC SC SC FW SC SC SC FW SC FW CL CL CL FW FW FW FW
CLOUDS(%) 43 39 24 39 36 36 42 29 19 32 26 29 24 26 10 2 2 5 7 18 13 25
VSBY 4 3 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 10
RAIN SHWRS IS
TSTMS IS
Obvis PF PF
MIX HGT <1 <1 2 4 3 <1 <1 <1 <1 <1 3 6 5 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR S S S S S S S S SW SW SW W SW S SW SW SW SW W W W W
T WIND SPD 9 6 9 5 3 5 2 3 2 3 5 4 9 3 4 6 5 4 18 12 8 2
DISPERSION PR PR PR PR PR VP PR FR FR PR
ADI 6 7 27 27 14 3 2 2 1 4 24 30 49 2 3 5 4 4 64 54 33 1
MAX LVORI 6 6 4 3 3 6 6 5 5 5 3 2 1 5 5 5 6 5 3 1 1 4
STABILITY E B B B B F E F F B B B B F E E E C C C C F
CEILING None None None None None None None None None None
STA PRES 26.97 26.95 26.97 26.97 26.97 26.91 26.87 26.82 26.81 26.73
Date Fri 09/11/26Sat 09/12/26Sun 09/13/26Mon 09/14/26
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 62 73 61 72 61 74 61 74
TEMP 65 62 71 66 64 62 67 65 64 62 71 67 64 62 70 66
DEWPT 61 61 64 64 63 62 65 63 63 62 65 64 62 61 63 62
RH 87 97 79 93 97100 93 93 97100 81 90 93 97 78 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B2 B2 B1 B2 B2 B1 B1 SC B1 SC SC SC B1
POP 12HR 20 80 30 80 20 50 20 40
RAIN SHWRS IS SC O SC NM O IS IS SC IS IS SC
TSTMS IS IS 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
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