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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
324 AM EDT Wed Sep 16 2026
VAZ024-162000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
324 AM EDT Wed Sep 16 2026
Date Wed 09/16/26 Thu 09/17/26 Fri 09/18/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 90 62 94 68 90
TEMP 59 60 79 89 89 76 70 67 64 65 85 93 90 77 73 70 69 70 84 89 86 75
DEWPT 57 57 64 66 66 65 64 63 62 62 68 69 71 71 70 69 69 69 72 72 72 71
MAX/MIN RH 46 93 45 100 56
RH 93 90 60 47 47 69 81 87 93 90 57 46 54 82 90 97100 97 67 57 63 87
WIND DIR N N N SE SE SE N N N N W W NW SW N N NW NW N N NE NE
WIND SPD 0 0 0 3 4 1 0 0 0 0 1 2 2 1 0 0 1 1 2 3 3 2
CLOUDS FW CL FW CL CL FW FW FW CL FW SC B1 B1 SC B1 SC SC SC SC B2 B2 B2
CLOUDS(%) 8 2 6 4 5 12 10 8 2 8 27 60 69 36 52 43 30 37 42 80 80 71
VSBY 8 8 10 10 10 9 10 6 5 6 6 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 50 5 70
RAIN SHWRS SC SC NM NM SC
TSTMS SC SC SC SC
Obvis PF
MIX HGT <1 <1 2 4 3 <1 <1 <1 <1 <1 2 6 1 <1 <1 <1 <1 <1 3 4 2 <1
T WIND DIR NW NW NW E SE S SW NW NW NW W W W SW NW W W NW N NE NE NE
T WIND SPD 2 2 3 3 4 3 2 2 2 1 2 10 10 2 6 3 4 5 6 6 11 10
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 8 15 16 2 1 1 1 1 6 45 18 1 3 2 2 6 23 31 29 5
MAX LVORI 7 6 3 2 2 3 5 6 7 7 3 1 2 5 6 8 9 9 3 1 2 5
STABILITY G A A B B G G G G A A C B G F F G A B B B F
CEILING None None None None None None None None None 24100
STA PRES 28.84 28.79 28.78 28.75 28.73 28.63 28.64 28.58 28.62 28.62
Date Sat 09/19/26Sun 09/20/26Mon 09/21/26Tue 09/22/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 64 82 63 88 65 86 64 81
TEMP 69 65 80 75 67 65 85 78 69 67 84 75 67 66 79 73
DEWPT 66 61 65 66 65 65 70 70 68 67 70 70 67 66 70 69
RH 90 87 60 74 93100 61 76 97100 63 84100100 74 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1 B2
POP 12HR 30 10 10 40 30 60 50 50
RAIN SHWRS SC SC SC IS NM SC IS IS SC
TSTMS IS IS IS 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