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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun Oct 18 2026
VAZ018-190800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
231 AM EDT Sun Oct 18 2026
Date 10/17/26 Sun 10/18/26 Mon 10/19/26 Tue
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 57 38 65 41
TEMP 37 37 48 55 56 46 42 41 40 40 55 64 64 53 47 46 44 43
DEWPT 25 22 24 28 29 29 27 26 26 25 29 32 37 35 35 34 32 31
MIN/MAX RH 70 34 58 30 66
RH 61 54 39 35 35 51 55 55 57 55 37 30 37 50 63 63 62 62
WIND DIR NE NE E E E NE NE N N N N NE N N NW NW NW NW
WIND SPD 4 5 8 5 5 3 3 3 3 4 4 4 4 3 3 3 3 3
CLOUDS CL CL CL CL CL CL CL CL CL CL CL FW FW FW FW FW CL CL
CLOUDS(%) 1 2 2 3 2 1 4 4 2 2 1 10 15 10 11 13 4 4
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 <1 1 3 2 <1 <1 <1 <1 <1
T WIND DIR N N NE NE NE E NE N N N NE NE N N N NW NW NW
T WIND SPD 4 4 14 10 10 4 3 3 4 5 10 13 13 5 5 5 5 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 5 37 38 33 2 2 2 2 6 20 52 42 3 3 3 3 6
MAX LVORI 3 3 1 1 1 2 3 3 3 3 2 1 1 3 3 3 3 3
STABILITY F B B B B G G G G B B B B G G G G B
CEILING None None None None None None None None None
STA PRES 28.19 28.26 28.20 28.19 28.14 28.08 27.98 27.97 27.94
Date 10/20Wed 10/21/26Thu 10/22/26Fri 10/23/26Sat 10/24/26
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 71 42 68 43 69 45 65 46 62
TEMP 70 53 47 43 67 56 48 44 68 56 48 45 64 53 49 47 61 53
DEWPT 36 40 38 37 41 42 39 37 41 42 40 38 45 43 42 40 45 43
RH 29 61 71 79 39 59 71 76 37 59 74 76 50 69 77 76 56 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW CL FW FW FW CL FW FW FW CL FW FW FW
POP 12HR 0 0 0 0 0 0 0 5 5
$$
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