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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 PM EDT Tue Oct 20 2026
VAZ024-210800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
901 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 40 73 37 75 42
TEMP 54 50 48 40 59 67 71 59 51 47 44 42 60 72 74 63 54 50 47 46
DEWPT 39 38 37 37 39 40 39 38 38 38 36 34 36 36 38 38 38 39 39 40
MIN/MAX RH 90 30 75 24 79
RH 57 63 65 89 47 37 31 45 61 71 73 73 41 27 27 39 54 66 74 79
WIND DIR N N N N N N N N N NW NW NW NW N N N N N N N
WIND SPD 3 3 3 3 5 5 4 3 2 2 2 1 2 2 1 2 2 1 2 2
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW CL CL CL CL FW FW FW
CLOUDS(%) 2 1 2 1 1 3 3 4 4 3 3 4 6 1 0 1 2 11 12 7
VSBY 10 10 10 10 10 10 10 10 10 6 10 3 2 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 1 3 3 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW N N N
T WIND SPD 4 4 4 4 4 4 4 4 4 4 4 6 5 5 9 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 5 12 18 11 2 2 2 2 7 11 23 34 2
MAX LVORI 3 4 6 6 2 2 2 2 3 3 3 3 2 2 1 2
STABILITY G G G B B B A G G G G A B B A G
CEILING None None None None None None None None
STA PRES 28.71 28.68 28.60 28.60 28.58 28.62 28.60
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 37 63 39 68 41 74 46 72
TEMP 66 53 42 38 62 53 42 40 65 57 45 42 71 62 49 47 70 58
DEWPT 40 46 41 38 41 45 42 39 45 49 45 42 47 52 49 47 52 51
RH 38 77 96100 46 74100 96 48 75100100 42 70100100 53 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL CL CL CL CL FW FW FW FW FW FW FW SC SC 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