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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun Oct 18 2026
NCZ001-190800-
RAWS 310142
36.40N 81.46W Elev. 4608 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 31 49 36 58 40
TEMP 34 33 40 47 48 42 40 39 38 38 49 56 56 48 44 43 42 40
DEWPT 21 17 15 21 26 25 23 20 17 16 21 27 31 30 27 30 29 27
MIN/MAX RH 74 34 51 31 61
RH 58 51 36 35 42 50 50 46 42 40 33 32 38 49 51 60 60 59
WIND DIR NE E E E E E E E N N N N N N N NW NW NW
WIND SPD 11 11 10 9 6 4 4 4 4 5 4 5 6 5 5 6 6 6
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL FW CL CL CL CL
CLOUDS(%) 2 2 1 1 1 2 3 3 1 2 2 3 2 7 4 3 2 2
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 2 <1 <1 <1 <1 <1 1 3 3 <1 <1 <1 <1 <1
T WIND DIR NE NE E E E E E E N N N N N N N N N N
T WIND SPD 4 4 16 12 9 4 4 3 2 4 8 13 13 8 8 8 8 8
DISPERSION FR VP VP VP VP PR PR PR PR
ADI 3 4 34 37 25 2 2 2 1 5 14 53 45 4 4 4 4 8
MAX LVORI 3 3 1 1 2 3 3 3 2 2 2 1 1 3 3 3 3 2
STABILITY E C C C B F F F F B B B B F F F F B
CEILING None None None None None None None None None
STA PRES 27.02 27.09 27.04 27.03 26.98 26.95 26.87 26.85 26.82
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 62 41 61 40 60 40 59 40 57
TEMP 61 48 45 41 60 50 44 41 58 50 44 41 57 47 44 41 55 48
DEWPT 31 36 32 31 36 39 36 34 36 39 37 33 39 41 39 38 42 43
RH 32 63 60 67 41 66 73 76 44 66 76 73 51 79 82 89 61 83
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL CL FW FW CL CL CL CL FW CL CL CL FW FW CL
POP 12HR 0 0 0 0 0 0 0 0 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