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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Sun Oct 18 2026
VAZ024-182000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
131 PM EDT Sun Oct 18 2026
Date Sun 10/18/26 Mon 10/19/26 Tue 10/20/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 62 33 68 40 74
TEMP 62 62 48 42 39 37 36 56 68 68 52 47 44 42 40 62 72 72 56
DEWPT 29 29 32 32 32 30 29 34 34 37 39 36 35 33 32 38 40 44 42
MAX/MIN RH 28 76 32 71 31
RH 28 28 54 67 76 75 75 43 28 32 61 65 70 70 73 41 31 37 59
WIND DIR E E NE N N NW NW N N NE N N NW NW NW N N N N
WIND SPD 4 3 1 0 1 1 2 2 4 3 2 2 2 2 3 3 4 3 3
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 3 2 2 3 3 2 1 2 5 2 4 3 3 1 0 1 3 1 3
VSBY 10 10 10 10 10 10 10 10 10 10 10 6 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 4 3 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR NE NE NE N N N N NE NE NE N N N N N N N N N
T WIND SPD 12 11 4 3 3 4 5 12 11 12 5 5 5 6 5 18 17 17 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 56 48 2 2 2 2 6 29 44 37 3 3 3 3 6 43 65 36 2
MAX LVORI 1 1 3 3 4 4 4 2 1 1 3 3 3 3 3 1 1 1 3
STABILITY B B G G G G B B B B G G G G B B B B G
CEILING None None None None None None None None None
STA PRES 28.95 28.96 28.91 28.86 28.78 28.75 28.71 28.72 28.68
Date Wed 10/21/26Thu 10/22/26Fri 10/23/26Sat 10/24/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 41 70 38 72 41 69 38 64
TEMP 47 42 69 57 45 39 71 59 46 43 67 54 44 39 63 50
DEWPT 42 41 45 43 42 39 41 41 41 41 48 45 42 39 43 41
RH 83 96 42 59 89100 34 51 83 93 50 71 93100 48 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL FW CL CL CL CL CL FW CL FW FW FW FW FW
POP 12HR 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