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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
318 AM EDT Sat Oct 17 2026
VAZ012-172000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
318 AM EDT Sat Oct 17 2026
Date Sat 10/17/26 Sun 10/18/26 Mon 10/19/26
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 50 30 56 31 64
TEMP 44 43 45 48 47 40 37 34 32 31 46 54 55 45 38 36 33 32 51 60 63 51
DEWPT 42 40 40 36 33 32 30 28 26 24 25 28 30 31 28 26 24 24 32 35 38 38
MAX/MIN RH 57 79 36 75 38
RH 93 89 82 63 58 73 75 78 78 75 43 36 38 58 67 67 69 72 48 39 39 61
WIND DIR NW N N N N N N N N NE E E E E E E E NE NE NE N N
WIND SPD 8 9 9 9 8 6 5 3 3 3 5 5 4 3 2 1 1 1 1 1 1 1
WIND GUST 18 20 20 20 19
CLOUDS OV OV B2 SC FW CL CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW FW
CLOUDS(%) 100 88 75 48 12 2 3 2 2 2 2 3 3 1 6 6 8 8 7 9 9 9
VSBY 6 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 0 0 0 0
RAIN SHWRS O IS
MIX HGT 2 2 3 4 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 1 3 2 <1
T WIND DIR NW N N N N N N N N NE E E E E E E NE NE E NE NE N
T WIND SPD 19 24 24 24 21 10 9 3 2 2 12 13 10 3 3 2 2 2 11 10 11 3
DISPERSION PR PR PR VP VP VP VP VP VP VP
ADI 26 47 59 89 88 5 4 2 1 2 33 49 34 2 2 1 1 2 21 35 37 2
MAX LVORI 4 4 4 1 1 3 4 4 4 4 1 1 1 3 3 3 3 3 2 1 1 3
STABILITY D D D C B F F G G B B B B G G G G A A A A G
CEILING 1100 None None None None None None None None None
STA PRES 27.42 27.49 27.57 27.61 27.68 27.64 27.65 27.61 27.60 27.52
Date Tue 10/20/26Wed 10/21/26Thu 10/22/26Fri 10/23/26
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 35 69 38 69 37 69 40 69
TEMP 40 36 67 54 44 40 65 55 44 41 65 56 47 42 66 56
DEWPT 34 32 38 40 37 34 42 43 41 38 44 46 44 41 47 46
RH 79 85 34 59 76 79 43 64 89 89 46 69 89 96 50 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW
POP 12HR 0 0 0 0 0 5 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