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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 PM EDT Sun Sep 13 2026
NCZ003-140800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
1031 PM EDT Sun Sep 13 2026
Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed
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 66 86 60 81 59
TEMP 70 67 66 68 80 84 86 78 68 65 62 61 70 78 81 74 66 62 59 61
DEWPT 66 64 64 66 70 67 65 61 58 58 55 53 56 60 64 63 60 58 56 56
MIN/MAX RH 92 49 80 53 88
RH 87 90 93 93 72 57 50 56 70 78 78 75 61 54 56 69 81 87 90 84
WIND DIR NW NW NW NW N N N N N NE E E SE SE SE N N N N N
WIND SPD 2 1 2 3 6 6 5 3 2 2 1 1 3 4 3 0 0 0 0 0
CLOUDS CL CL FW SC SC FW FW FW SC SC B1 SC FW FW FW CL CL FW CL CL
CLOUDS(%) 5 5 18 28 30 14 9 15 32 46 55 38 22 19 11 3 5 7 4 4
VSBY 10 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 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 <1 3 3 4 <1
T WIND DIR NW NW NW N N N N N N N E E SE S S SE
T WIND SPD 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 VP VP
ADI 3 3 3 13 90 83 69 3 3 2 3 9 16 15 5 1
MAX LVORI 5 6 6 5 3 1 1 3 3 4 4 4 2 2 3 3
STABILITY 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
STA PRES 28.16 28.23 28.24 28.31 28.35 28.44 28.39
Date 09/16Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
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 62 88 64 89 65 85 65 85
TEMP 84 78 66 64 86 79 68 66 87 79 69 66 83 77 67 67 83 77
DEWPT 66 65 60 59 64 64 60 61 66 68 64 63 67 68 64 64 69 69
RH 55 64 81 84 48 60 76 84 50 69 84 90 59 74 90 90 63 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW FW CL FW SC FW FW FW B1 SC SC SC SC SC SC B1 B1
POP 12HR 5 0 20 5 30 10 20 10 40
RAIN SHWRS IS SC IS IS SC
TSTMS IS 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