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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Sep 16 2026
VAZ018-170800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 PM EDT Wed Sep 16 2026
Date 09/16/26 Thu 09/17/26 Fri 09/18/26 Sat
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 65 89 68 86 65
TEMP 70 68 66 67 84 89 85 74 72 71 69 70 81 86 83 72 70 69 67 66
DEWPT 61 61 61 62 67 68 69 68 68 67 67 67 69 69 69 69 68 66 64 63
MIN/MAX RH 85 50 92 56 92
RH 73 78 84 84 57 50 59 82 87 87 93 90 67 57 63 90 93 90 90 90
WIND DIR SW W W NW NW NW NW W W NW NW NW NW N N NE E E E E
WIND SPD 3 4 3 5 6 6 6 3 5 3 3 3 3 3 3 2 2 3 3 3
WIND GUST 13 13
CLOUDS CL FW FW FW FW FW B1 B1 SC SC SC SC SC B2 B2 B1 B2 B2 B2 B2
CLOUDS(%) 2 13 13 13 23 22 65 54 34 34 48 31 28 71 71 66 81 81 78 72
VSBY 10 10 6 4 10 10 9 9 9 8 5 4 9 10 10 10
POP 12HR 0 40 10 60 30
RAIN SHWRS SC SC NM NM SC SC
TSTMS SC SC IS IS
MIX HGT <1 <1 <1 <1 3 4 2 <1 <1 <1 <1 <1 4 5 3 <1
T WIND DIR W W W W NW NW W W W NW NW NW N NW W NW
T WIND SPD 3 3 2 3 9 13 14 11 6 6 5 4 8 2 3 2
DISPERSION VP VP VP VP PR VP VP VP VP VP VP
ADI 2 2 1 4 35 37 32 5 3 3 3 5 28 9 11 1
MAX LVORI 4 4 6 5 1 1 1 5 6 6 6 6 3 3 3 6
STABILITY G G G B B D D F G G G B C C C F
CEILING None None None None None None None 2400 800
STA PRES 4.679 28.07 28.05 27.98 27.95 27.93 27.93 27.86
Date 09/19Sun 09/20/26Mon 09/21/26Tue 09/22/26Wed 09/23/26
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 78 63 85 64 81 63 76 62 73
TEMP 76 70 67 66 83 74 69 67 80 71 67 66 75 69 66 64 72 67
DEWPT 67 64 63 64 70 68 66 65 70 67 65 65 70 67 64 63 67 64
RH 74 81 87 93 65 82 90 93 72 87 93 97 84 93 93 97 84 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B1
POP 12HR 10 5 50 20 70 40 70 60 40
RAIN SHWRS IS SC IS IS SC NM SC IS IS NM NM SC SC SC
TSTMS IS SC SC 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