Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Tue Oct 20 2026
NCZ003-210800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
831 PM EDT Tue Oct 20 2026
Date 10/20/26 Wed 10/21/26 Thu 10/22/26 Fri
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 44 75 47 74 45
TEMP 56 51 49 44 60 69 72 60 55 53 51 50 63 71 73 63 57 53 51 50
DEWPT 37 38 38 38 43 42 41 41 42 41 38 37 37 39 40 41 40 40 38 39
MIN/MAX RH 81 30 65 30 67
RH 49 61 66 79 53 37 33 49 61 64 61 61 38 31 30 44 53 61 61 66
WIND DIR N N NW NW N N N NW NW NW NW NW N N N N N N N N
WIND SPD 4 3 3 4 2 4 3 4 4 5 6 5 8 5 5 5 5 3 2 2
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW FW
CLOUDS(%) 1 1 2 2 2 3 3 1 2 3 4 3 1 2 1 0 0 4 10 8
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 0
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR N N N N N N N N N N NW NW N N N N
T WIND SPD 5 5 5 5 5 5 6 6 8 9 10 11 13 10 12 11
DISPERSION VP VP VP VP VP PR PR PR PR VP VP
ADI 3 2 2 6 14 26 25 3 4 4 5 12 32 39 50 5
MAX LVORI 3 3 5 5 2 2 2 2 3 3 3 2 1 1 1 2
STABILITY G G G B A B B G G G G B B B B F
CEILING None None None None None None None None None
STA PRES 28.32 28.30 28.28 28.21 28.21 28.19 28.23 28.21
Date 10/23Sat 10/24/26Sun 10/25/26Mon 10/26/26Tue 10/27/26
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 70 39 62 39 66 41 73 48 72
TEMP 66 54 46 40 59 52 44 41 64 56 46 43 71 61 52 49 70 58
DEWPT 43 53 45 40 46 49 43 40 48 52 45 42 49 55 49 47 54 54
RH 43 96 96100 62 89 96 96 56 86 96 96 46 81 89 93 57 86
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL CL CL CL CL CL FW FW CL FW FW FW FW FW SC SC
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