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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Wed Sep 16 2026
NCZ003-170800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
731 PM EDT Wed Sep 16 2026
Date 09/16/26 Thu 09/17/26 Fri 09/18/26 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 63 90 68 88 66
TEMP 79 70 67 65 66 86 89 85 78 72 70 69 71 84 88 85 77 72 70 68 67
DEWPT 67 65 63 62 63 68 68 71 70 69 68 67 68 71 70 71 72 70 69 68 67
MIN/MAX RH 91 48 94 56 100
RH 67 84 87 90 90 55 50 63 76 90 93 93 90 65 55 63 85 93 97100100
WIND DIR S W NW NW NW N NW S NW NW NW NW NW N N N N N NE NE NE
WIND SPD 2 1 1 2 2 2 3 3 2 4 1 2 3 5 4 3 2 1 1 1 2
CLOUDS CL CL FW FW FW FW SC B1 FW SC SC FW SC SC B2 B2 B1 B1 B2 B2 B2
CLOUDS(%) 2 1 7 11 11 15 33 54 23 41 26 18 38 30 77 77 67 67 76 86 80
VSBY 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 30 10 70 40
RAIN SHWRS IS IS SC SC NM NM SC SC IS IS
TSTMS IS IS SC SC
MIX HGT <1 <1 <1 <1 <1 2 4 2 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR W NW NW NW NW NW NW W W NW NW NW NW N NW NW NW
T WIND SPD 2 2 3 5 5 3 3 4 4 4 5 6 6 12 13 10 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 2 2 6 11 17 10 2 2 3 3 5 31 41 34 4
MAX LVORI 4 5 7 6 6 2 2 3 5 6 6 8 6 3 1 3 5
STABILITY G G G G A A B B F G G G C D D B F
CEILING None None None None None None None 6200 8200
STA PRES 4.734 28.39 28.38 28.31 28.28 28.25 28.26 28.20
Date 09/19Sun 09/20/26Mon 09/21/26Tue 09/22/26Wed 09/23/26
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 79 64 86 64 84 63 79 62 76
TEMP 77 75 68 67 84 77 69 67 82 76 68 66 77 74 67 65 74 71
DEWPT 69 69 66 67 71 71 67 67 71 71 67 66 71 70 66 65 68 68
RH 76 82 93100 65 82 93100 69 85 97100 82 87 97100 82 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B1 B1 B1 B2 B1 SC SC B2 B2 B2 B2 B2 B2 B2 B2 B1
POP 12HR 30 20 60 20 60 50 60 60 40
RAIN SHWRS SC IS IS NM IS NM SC IS SC NM NM SC SC SC
TSTMS SC SC IS 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