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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Tue Sep 15 2026
NCZ003-160800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
131 AM EDT Tue Sep 15 2026
Date 09/14/26 Tue 09/15/26 Wed 09/16/26 Thu
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 62 79 61 87 60
TEMP 68 65 63 70 77 79 73 67 64 61 62 75 84 87 78 69 64 61 62
DEWPT 62 58 54 58 62 66 64 62 60 58 58 64 66 67 65 62 60 57 58
MIN/MAX RH 80 60 89 52 89
RH 81 78 72 66 60 64 73 84 87 90 87 69 55 52 64 78 87 87 87
WIND DIR NE NE E E SE SE N N N N N SE SE SE N N N N N
WIND SPD 4 4 1 3 4 3 0 0 0 0 0 1 3 4 0 0 0 0 0
CLOUDS B1 SC B1 B1 B1 FW SC FW FW FW FW FW FW FW CL CL FW FW FW
CLOUDS(%) 56 48 52 62 54 23 28 25 20 20 17 13 10 6 0 3 6 6 10
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 6 0 0
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR E E E E SE S SE SE S NW S NW N E S
T WIND SPD 16 12 9 5 3 3 5 3 2 1 1 1 3 1 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 7 6 7 15 8 13 3 2 1 1 1 3 15 5 2
MAX LVORI 4 4 3 3 3 2 4 5 6 7 6 3 2 2 3
STABILITY F F C C D B G G G G A A B B G
CEILING None None None None None None None None
STA PRES 28.36 28.45 28.42 28.44 28.45 28.47 28.43
Date 09/17Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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 88 64 91 66 89 66 90 66 83
TEMP 85 79 68 66 89 81 70 67 86 80 70 68 86 80 70 67 80 76
DEWPT 62 62 58 58 65 67 63 63 67 68 65 65 69 70 66 66 69 69
RH 46 56 70 75 45 63 78 87 53 67 84 90 57 72 87 97 69 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW CL FW SC SC SC FW SC FW FW SC B1 B1 SC SC B2
POP 12HR 5 0 20 5 30 10 40 30 60
RAIN SHWRS IS SC IS SC SC IS IS NM
TSTMS IS SC IS IS
$$
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