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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 310301
36.48N 80.86W Elev. 1300 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 69 43 74 43
TEMP 62 49 45 42 40 40 59 68 69 57 50 48 46 46 64 72 73 61 53 49 46 44
DEWPT 31 33 32 29 27 27 35 35 39 40 37 36 34 32 41 39 47 42 40 40 40 40
MIN/MAX RH 62 29 64 30 85
RH 31 54 60 60 59 59 40 29 33 53 61 63 63 58 43 30 40 49 61 71 79 86
WIND DIR E NE N NW NW NW N N N N NW NW NW NW N N N N N N NW NW
WIND SPD 4 2 1 1 2 4 3 4 4 3 3 3 4 5 4 4 3 4 4 2 1 2
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 1 2 3 3 3 2 2 1 2 2 2 4 2 3 3 2 1 2 2 3
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 1 3 2 <1
T WIND DIR NE N NE N N N NE N N N N N N N N N N N
T WIND SPD 11 4 4 4 5 6 11 10 10 4 5 6 8 8 13 13 14 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 41 2 2 2 3 7 25 41 27 2 3 3 4 8 23 56 41 3
MAX LVORI 1 3 3 3 3 3 2 1 2 2 3 3 3 2 2 1 1 2
STABILITY B G G G G B B B B G G G F B B B B F
CEILING None None None None None None None None None None
STA PRES 28.53 28.53 28.49 28.44 28.36 28.34 28.31 28.32 28.28
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 71 43 72 44 70 42 65 40 68
TEMP 70 59 48 45 70 59 48 45 68 55 47 43 63 54 45 42 66 56
DEWPT 49 48 44 40 45 44 40 40 51 48 44 40 47 44 41 39 48 47
RH 47 67 86 82 41 57 74 82 54 77 89 89 56 69 86 89 52 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL CL CL CL CL CL CL CL CL FW FW FW CL 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