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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Wed Oct 21 2026
NCZ001-212000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
731 AM EDT Wed Oct 21 2026
Date Wed 10/21/26 Thu 10/22/26 Fri 10/23/26
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 61 44 55 37 55
TEMP 41 53 60 60 51 47 46 45 44 49 55 55 45 42 40 38 38 48 54 53 43
DEWPT 28 29 28 30 33 30 23 22 22 22 28 32 37 35 32 29 28 33 37 40 41
MAX/MIN RH 30 52 33 76 52
RH 59 39 29 32 50 51 40 40 41 34 35 41 73 76 73 70 67 56 52 61 93
WIND DIR N N N N N N N N N NW N NW NW NW N N N SE SE E SE
WIND SPD 2 1 4 6 8 9 11 12 13 9 6 8 10 9 6 4 3 4 3 5 5
CLOUDS CL CL CL CL CL CL FW CL CL CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 2 1 1 1 2 3 6 5 4 2 3 2 4 3 2 2 2 1 2 1 4
VSBY 10 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 0
MIX HGT <1 2 4 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 4 3 <1
T WIND DIR NW NW N N NW N NW NW NW N N N NW N N N N NE NE E E
T WIND SPD 2 9 11 9 6 6 10 9 10 12 12 12 10 8 5 3 3 9 5 5 5
DISPERSION PR PR FR FR FR PR PR VP PR
ADI 2 19 52 35 5 5 7 8 8 25 46 42 7 5 3 2 4 26 25 22 3
MAX LVORI 3 2 1 1 3 4 4 4 4 2 1 1 3 3 3 3 3 2 2 2 6
STABILITY B A B B E E E D C C B B E E F F B B B B F
CEILING None None None None None None None None None None
STA PRES 26.85 26.80 26.80 26.76 26.79 26.78 26.82 26.85 26.90 26.91
Date Sat 10/24/26Sun 10/25/26Mon 10/26/26Tue 10/27/26
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 35 51 35 54 38 59 42 59
TEMP 39 36 50 42 37 36 53 43 40 39 58 49 44 43 58 50
DEWPT 37 30 34 36 33 30 36 39 34 28 37 41 37 34 40 43
RH 92 79 54 79 85 79 52 86 79 64 45 74 76 70 51 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL FW FW FW FW FW FW FW FW FW SC SC
POP 12HR 0 0 0 0 0 0 0 0
$$
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