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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sun Oct 18 2026
NCZ003-190800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 PM EDT Sun Oct 18 2026
Date 10/18/26 Mon 10/19/26 Tue 10/20/26 Wed
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 37 68 41 73 44
TEMP 60 48 44 41 40 39 57 66 67 52 47 45 44 42 63 71 72 59 51 48 46 45
DEWPT 28 31 31 30 29 28 33 32 36 39 38 36 34 33 41 38 45 43 41 41 41 41
MIN/MAX RH 65 28 72 29 89
RH 29 51 60 65 64 64 40 28 32 61 71 70 68 70 44 30 38 55 68 77 83 86
WIND DIR NE NE NE NE N NE NE NE NE N N N NW N N N N N N N N N
WIND SPD 8 5 5 5 6 5 5 5 4 3 4 4 5 5 3 4 2 3 4 4 4 4
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 1 1 2 1 1 0 2 4 2 4 1 2 1 0 1 2 3 3 1 1 1 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 3 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR NE NE NE NE N N NE NE NE N N N N N NE N N N
T WIND SPD 16 5 5 5 6 5 14 13 12 4 4 4 5 5 17 16 14 3
DISPERSION PR PR PR PR VP VP VP PR VP VP VP VP
ADI 63 3 3 3 3 6 39 50 35 2 2 2 3 6 34 66 31 2
MAX LVORI 1 2 3 3 3 3 1 1 1 3 3 3 3 3 1 1 1 2
STABILITY B F F F F B B B B G F F F B B B B G
CEILING None None None None None None None None None None
STA PRES 29.38 29.40 29.34 29.30 29.20 29.18 29.15 29.16 29.10
Date 10/21Thu 10/22/26Fri 10/23/26Sat 10/24/26Sun 10/25/26
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 69 43 71 44 68 43 64 41 66
TEMP 68 57 47 44 69 58 47 45 67 55 48 44 62 53 45 43 64 56
DEWPT 48 46 44 41 45 44 41 41 49 46 43 41 45 43 41 40 46 46
RH 49 67 89 89 42 59 79 86 52 72 83 89 54 69 86 89 52 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL CL CL CL CL CL CL CL CL CL FW FW FW 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