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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Tue Oct 20 2026
NCZ003-210800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
131 AM EDT Tue Oct 20 2026
Date 10/19/26 Tue 10/20/26 Wed 10/21/26 Thu
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 45 74 45 73 46
TEMP 49 47 48 61 70 72 60 55 51 47 46 60 68 71 61 53 50 48 46
DEWPT 35 35 33 36 36 37 36 40 42 41 42 48 47 49 50 47 45 45 43
MIN/MAX RH 66 26 85 44 91
RH 58 63 56 39 29 28 41 57 71 79 86 64 47 46 67 80 83 89 89
WIND DIR NW NW NW N N N NW NW NW NW NW N N N N NW NW NW NW
WIND SPD 3 3 4 2 3 2 2 2 1 1 2 1 2 2 1 2 2 2 4
CLOUDS CL CL CL FW CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 2 3 2 7 3 1 2 3 3 3 2 3 0 0 1 1 2 3 4
VSBY 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 <1 <1 1 3 2 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR N N N N N N N N N N N N N NW NW
T WIND SPD 8 8 8 11 10 11 6 9 8 6 5 8 10 11 8
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 4 4 8 19 40 24 3 4 4 3 6 20 42 38 4
MAX LVORI 3 3 3 2 1 2 3 3 5 5 5 3 1 1 3
STABILITY F F B B B B G G G G B A B B G
CEILING None None None None None None None None
STA PRES 28.32 28.33 28.28 28.29 28.27 28.27 28.18
Date 10/22Fri 10/23/26Sat 10/24/26Sun 10/25/26Mon 10/26/26
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 72 47 68 43 64 42 68 44 74
TEMP 68 61 51 47 63 54 46 43 58 52 44 43 63 57 47 45 70 62
DEWPT 47 47 45 43 54 51 45 42 49 48 44 43 52 49 45 42 52 52
RH 47 60 80 86 72 90 96 96 72 86100100 67 75 93 89 53 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL CL FW CL FW FW CL CL FW FW FW CL FW FW FW
POP 12HR 0 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