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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Oct 18 2026
VAZ046-182000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 AM 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 58 39 64 44 70
TEMP 50 56 57 48 44 42 41 41 56 62 62 53 49 47 44 46 63 69 67 55
DEWPT 29 28 30 31 32 32 31 30 34 36 37 37 36 36 34 34 39 39 43 44
MAX/MIN RH 34 68 37 67 33
RH 44 34 35 51 62 67 67 65 43 38 39 54 61 65 68 63 41 33 42 66
WIND DIR NE NE NE NE N N N N N N N N N N N N N N N N
WIND SPD 11 10 9 5 4 5 5 8 11 11 9 6 4 5 6 6 9 10 6 5
CLOUDS CL CL CL CL CL CL CL FW CL FW SC FW FW FW FW FW FW FW FW FW
CLOUDS(%) 1 2 2 1 2 3 2 8 3 18 29 18 9 8 13 10 9 10 10 11
VSBY 10 10 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 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NE NE NE NE N N N N NE N N N N N N N N N N N
T WIND SPD 21 17 16 5 5 5 6 8 24 24 24 10 10 10 18 10 24 24 23 9
DISPERSION PR VP PR PR PR VP PR PR PR
ADI 60 58 51 3 3 3 3 8 67 81 72 5 5 5 8 11 63 83 73 4
MAX LVORI 1 1 1 3 3 3 3 3 1 1 1 3 3 3 3 2 1 1 1 3
STABILITY C C C F F F F B C C C F F F F B C C B F
CEILING None None None None None None None None None None
STA PRES 29.84 29.77 29.75 29.69 29.62 29.49 29.46 29.43 29.45 29.42
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 44 66 45 69 47 66 47 63
TEMP 48 45 65 56 48 47 68 58 49 48 64 56 50 48 61 56
DEWPT 43 42 42 43 42 41 43 45 43 43 47 47 45 43 46 47
RH 83 89 43 62 80 79 40 62 80 83 54 72 83 83 58 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW CL FW FW CL FW FW FW FW FW
POP 12HR 0 0 5 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