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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 PM EDT Tue Oct 20 2026
NCZ003-210800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
531 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 42 73 43 74 45
TEMP 61 55 50 47 45 59 67 70 59 53 50 48 47 62 71 73 62 56 53 51 50
DEWPT 35 40 41 41 41 44 41 40 41 40 40 37 35 35 35 35 38 38 38 37 39
MIN/MAX RH 84 31 67 24 68
RH 38 57 71 79 86 57 39 33 51 61 68 65 63 36 27 25 41 51 57 59 66
WIND DIR NE NE NE N N NE NE NE NE N N NW NW N N N N N N N N
WIND SPD 2 4 4 4 4 3 2 1 1 2 3 4 4 4 3 2 3 4 4 4 4
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW
CLOUDS(%) 0 0 0 0 0 0 0 0 2 0 0 2 2 0 1 1 1 0 0 5 7
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 9
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 4 3 <1
T WIND DIR N N N N N N NW NW NW NW NW NW NW N N N N
T WIND SPD 5 5 5 5 5 5 5 5 5 5 5 5 5 5 8 8 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 2 6 15 22 17 3 3 3 3 6 14 37 34 2
MAX LVORI 2 3 3 4 5 2 2 2 2 3 3 3 3 2 1 1 2
STABILITY G F F F B B B A G G G F B B B B G
CEILING None None None None None None None None None
STA PRES 29.16 29.15 29.13 29.04 29.05 29.03 29.07 29.05
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 67 39 61 40 66 42 72 47 72
TEMP 65 53 45 40 59 51 43 41 63 55 46 43 69 60 50 48 70 57
DEWPT 41 51 44 40 44 46 43 41 47 50 46 42 48 53 49 47 52 53
RH 41 93 96100 57 83100100 56 83100 96 47 78 96 96 53 86
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW 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