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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sun Sep 13 2026
VAZ012-140800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 PM EDT Sun Sep 13 2026
Date 09/13/26 Mon 09/14/26 Tue 09/15/26 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 61 81 53 82 54
TEMP 71 64 63 62 62 71 78 79 67 58 56 54 54 68 78 81 71 61 57 54 56
DEWPT 65 63 61 61 62 65 62 58 56 54 51 51 51 57 62 63 61 58 54 52 53
MIN/MAX RH 100 48 93 53 93
RH 81 97 93 97100 81 58 49 68 86 83 90 90 68 58 54 71 90 90 93 90
WIND DIR NW NW W NW NW N N N N NE E SE SE SE SE SE SE SE N N N
WIND SPD 2 1 2 2 2 2 2 2 1 1 1 2 2 2 2 2 2 1 0 0 0
CLOUDS FW SC B1 SC B2 SC SC FW FW FW FW SC SC FW FW FW FW FW FW FW FW
CLOUDS(%) 13 34 55 34 72 50 45 14 6 23 20 33 27 19 20 7 6 8 11 9 10
VSBY 10 10 10 9 6 10 10 10 10 10 10 10 10 10 10 10 10 10 0 0 1
POP 12HR 0 0 0 0 0
Obvis PF
MIX HGT <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR NW NW NW NW N N N N N NE NE SE S S S S SE
T WIND SPD 5 5 8 8 13 16 12 10 5 2 1 3 1 6 3 3 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 3 4 4 12 54 64 53 3 1 1 2 1 18 15 16 2
MAX LVORI 5 8 6 8 7 3 1 1 3 5 6 7 6 3 2 2 3
STABILITY G G F G C B B B G G G G B B B B G
CEILING None None None None None None None None None
STA PRES 27.31 27.33 27.40 27.40 27.45 27.48 27.54 27.51
Date 09/16Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
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 86 58 87 59 86 59 83 59 83
TEMP 83 74 62 60 83 74 62 61 81 72 64 60 79 70 62 61 78 70
DEWPT 64 62 57 56 63 62 58 58 65 65 61 60 65 64 60 60 66 64
RH 53 66 84 87 51 66 87 90 58 79 90100 62 81 93 97 67 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC B1 SC FW SC B1 SC SC SC B1 SC SC B1 B1
POP 12HR 10 5 30 5 40 10 40 10 50
RAIN SHWRS IS SC IS SC SC IS SC
TSTMS 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