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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Wed Oct 21 2026
VAZ024-220800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
401 PM EDT Wed Oct 21 2026
Date 10/21/26 Thu 10/22/26 Fri 10/23/26 Sat
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 36 71 39 67 38
TEMP 69 56 49 45 42 39 56 67 69 58 51 47 44 41 54 65 66 55 45 42 39 38
DEWPT 35 39 43 42 40 35 40 32 36 38 40 40 39 41 50 48 45 47 45 42 39 38
MIN/MAX RH 100 27 100 47 100
RH 28 53 80 89 93 85 55 27 30 47 66 76 82100 86 54 47 74100100100100
WIND DIR NE N N N NW NW N N N N N NW NW N NE NE E E E N N N
WIND SPD 2 0 0 0 1 1 2 3 1 2 2 1 2 2 3 3 3 2 1 0 0 0
CLOUDS CL CL CL CL CL FW CL CL CL CL CL CL CL FW FW FW CL CL CL FW FW FW
CLOUDS(%) 0 0 0 0 0 6 0 0 0 0 0 3 1 7 9 9 3 2 2 9 7 18
VSBY 10 10 10 8 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 3 <1 <1 <1 <1 <1 1 3 2 <1 <1 <1 <1 <1 3 4 3 <1
T WIND DIR N NE N NW NW NW NW NW N N N NW N N NE NE NE NE
T WIND SPD 8 3 3 3 4 4 6 5 6 3 4 4 4 5 11 8 8 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 29 2 2 2 2 4 13 24 19 2 2 2 2 6 38 36 30 2
MAX LVORI 2 2 4 7 8 5 2 2 2 2 3 4 5 8 4 1 1 4
STABILITY B G G G G A B B A G G G G B B B B G
CEILING None None None None None None None None None
STA PRES 28.62 28.60 28.63 28.60 28.66 28.71 28.79 28.81
Date 10/24Sun 10/25/26Mon 10/26/26Tue 10/27/26Wed 10/28/26
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 63 38 66 39 72 42 73 46 68
TEMP 61 53 41 39 63 55 43 40 69 59 46 43 70 61 50 47 66 59
DEWPT 40 43 41 39 46 47 43 39 45 47 45 43 49 51 50 47 50 51
RH 46 69100100 54 74100 96 42 64 96100 47 70100100 56 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL FW FW FW CL CL CL CL FW FW SC SC SC B1 B1 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