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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sun Oct 18 2026
NCZ006-190800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
731 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 66 41 72 44
TEMP 49 44 42 40 40 56 65 66 52 48 45 44 44 63 70 70 56 51 49 46 45
DEWPT 35 35 34 33 32 38 37 41 41 40 38 36 34 42 43 48 45 45 45 44 44
MIN/MAX RH 78 35 76 37 98
RH 58 70 73 76 73 51 35 40 66 74 76 73 68 46 38 45 66 80 86 93 96
WIND DIR NE NE N N N N N N N N N N N N N N N NE N N N
WIND SPD 4 2 2 3 5 9 9 8 3 1 2 3 3 6 8 5 2 2 2 3 4
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL FW CL FW FW CL FW FW FW FW
CLOUDS(%) 2 1 1 1 1 1 2 3 3 3 3 1 6 2 7 6 5 7 7 8 12
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 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NE NE N N N NE N N N N N N N N N N N
T WIND SPD 6 6 6 8 9 19 17 18 8 8 9 8 8 21 21 21 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 3 3 4 10 52 56 60 4 4 4 4 8 58 85 79 4
MAX LVORI 3 3 4 4 3 1 1 1 3 3 4 3 3 1 1 1 3
STABILITY F G G F B C C B G G G G B B B B G
CEILING None None None None None None None None None
STA PRES 29.83 29.77 29.72 29.62 29.59 29.55 29.55 29.51
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 68 40 70 42 69 42 66 41 68
TEMP 67 57 45 42 69 58 46 45 68 56 47 43 64 55 46 42 67 57
DEWPT 50 46 43 42 48 44 41 43 52 49 45 42 47 46 43 42 49 49
RH 54 67 93100 47 59 83 93 57 77 93 96 54 72 89100 52 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL CL CL CL CL CL CL FW CL FW FW 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