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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Sep 13 2026
VAZ012-132000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 AM EDT Sun Sep 13 2026
Date Sun 09/13/26 Mon 09/14/26 Tue 09/15/26
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 83 59 81 52 84
TEMP 72 79 80 70 64 62 61 62 71 76 78 66 58 56 55 55 68 79 82 72
DEWPT 68 67 66 65 63 61 60 62 65 63 61 59 56 54 54 53 58 63 64 62
MAX/MIN RH 59 100 53 96 53
RH 87 67 62 84 97 97 97100 81 64 56 78 93 93 96 93 70 58 55 71
WIND DIR NW NW NW NW NW W NW NW NW NW N N NE E SE SE SE SE SE SE
WIND SPD 2 2 3 2 1 2 2 2 2 2 2 1 1 1 2 2 2 1 1 2
CLOUDS B1 SC FW FW SC SC SC B1 B1 FW FW CL FW SC SC SC FW SC FW FW
CLOUDS(%) 65 27 20 16 33 43 30 61 60 16 9 3 23 42 44 35 22 28 11 7
VSBY 10 10 10 10 10 10 9 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 5 0 0
MIX HGT 2 4 4 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR NW NW NW NW NW W NW NW N N N N NE E SE SE S S E SE
T WIND SPD 12 12 12 10 8 5 6 12 13 16 12 5 3 3 6 9 5 2 1 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 36 61 59 5 4 3 3 10 43 86 64 3 2 2 3 10 17 12 6 3
MAX LVORI 4 1 1 5 8 8 8 8 4 1 1 4 7 7 8 6 3 2 2 3
STABILITY C B B G G F G C C B B G G F F B B A A G
CEILING None None None None None None None None None None
STA PRES 27.28 27.26 27.30 27.30 27.37 27.38 27.43 27.46 27.51 27.49
Date Wed 09/16/26Thu 09/17/26Fri 09/18/26Sat 09/19/26
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 54 88 57 88 59 87 59 83
TEMP 58 57 83 74 62 60 83 74 63 61 82 72 62 62 78 70
DEWPT 56 55 65 63 58 57 63 62 58 58 65 64 60 60 65 64
RH 93 93 55 69 87 90 51 66 84 90 56 76 93 93 64 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW FW FW FW FW FW B1 SC SC SC B1
POP 12HR 0 10 0 20 5 40 10 50
RAIN SHWRS IS SC IS SC
$$
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