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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sat Oct 17 2026
NCZ003-180800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
731 PM EDT Sat Oct 17 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 38 60 39 65 42
TEMP 49 46 42 40 39 50 57 58 48 44 42 41 39 55 62 65 55 47 45 44 43
DEWPT 36 34 32 29 27 29 30 31 32 30 29 28 28 33 36 40 40 38 36 35 33
MIN/MAX RH 66 34 63 37 72
RH 61 63 67 64 62 44 35 36 54 57 60 59 64 43 38 40 57 71 70 70 67
WIND DIR N N NE NE NE NE NE NE NE NE N N N NE NE NE N N N N N
WIND SPD 9 9 6 6 6 10 9 8 5 5 5 5 5 6 5 4 3 3 4 5 5
WIND GUST 20
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW FW FW CL CL FW CL
CLOUDS(%) 1 0 1 2 0 1 4 3 4 1 1 1 0 4 12 9 11 5 5 6 4
VSBY 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 <1 <1 <1 3 3 3 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N N N N N NE NE NE NE NE NE N N NE NE NE N
T WIND SPD 9 11 6 6 8 17 18 16 5 6 6 6 8 17 17 17 5
DISPERSION PR PR PR PR PR PR PR PR VP VP VP PR
ADI 6 8 3 3 8 51 70 59 3 3 3 3 8 49 67 52 3
MAX LVORI 3 3 3 3 3 1 1 1 2 3 3 3 3 1 1 1 3
STABILITY E E F F B C B B F F F F B B B B G
CEILING None None None None None None None None None
STA PRES 29.32 29.38 29.44 29.38 29.37 29.32 29.28 29.18
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 72 44 69 43 72 46 70 46 68
TEMP 70 58 48 46 67 58 48 44 69 60 50 47 68 57 50 47 66 58
DEWPT 38 41 38 38 44 46 43 41 45 47 44 42 46 47 45 44 49 49
RH 31 53 68 73 43 64 83 89 42 62 80 83 45 69 83 89 54 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL CL FW CL CL CL CL CL CL CL CL CL CL FW
POP 12HR 0 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