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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 PM EDT Sun Sep 13 2026
NCZ003-132000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
101 PM EDT Sun Sep 13 2026
Date Sun 09/13/26 Mon 09/14/26 Tue 09/15/26
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 67 86 60 81
TEMP 85 87 80 72 69 67 68 80 84 86 78 68 65 62 61 70 78 81 74
DEWPT 69 70 68 67 65 65 66 70 67 65 61 58 58 55 53 56 60 64 63
MAX/MIN RH 56 93 49 80 53
RH 59 57 67 84 87 93 93 72 57 50 56 70 78 78 75 61 54 56 69
WIND DIR NW NW NW NW NW NW NW N N N N N NE E E SE SE SE N
WIND SPD 4 5 3 3 2 3 3 6 6 5 3 2 2 1 1 3 4 3 0
CLOUDS FW SC FW CL FW FW SC SC FW FW FW SC SC B1 SC FW FW FW CL
CLOUDS(%) 23 31 15 1 6 10 28 30 14 9 15 32 46 55 38 22 19 11 3
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 5 0 0
MIX HGT 5 3 <1 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 <1 3 3 4 <1
T WIND DIR NW NW NW NW NW NW N N N N N N N E E SE S S SE
T WIND SPD 16 13 6 5 6 6 12 20 13 11 6 5 4 5 9 4 3 1 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 94 56 3 3 3 3 13 90 83 69 3 3 2 3 9 16 15 5 1
MAX LVORI 1 1 3 5 6 6 5 3 1 1 3 3 4 4 4 2 2 3 3
STABILITY B B G G G G B B B B G G F F A B B B G
CEILING None None None None None None None None None
STA PRES 28.10 28.14 28.16 28.23 28.24 28.31 28.35 28.44 28.39
Date Wed 09/16/26Thu 09/17/26Fri 09/18/26Sat 09/19/26
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 59 87 62 88 64 89 65 86
TEMP 62 61 84 78 65 64 86 79 67 66 88 77 68 67 84 78
DEWPT 58 56 66 65 60 59 64 64 60 61 66 68 64 63 67 68
RH 87 84 55 64 84 84 48 60 78 84 48 74 87 87 57 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL FW CL FW FW SC FW FW FW B1 SC SC SC SC
POP 12HR 0 5 0 20 5 30 10 20
RAIN SHWRS IS SC IS
TSTMS 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