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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Sun Sep 13 2026
VAZ018-132000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM 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 85 66 83 56 81
TEMP 83 83 73 69 68 67 67 77 83 81 67 62 60 57 57 70 79 81 70
DEWPT 70 69 66 65 64 64 65 64 61 55 54 53 51 49 49 54 60 61 58
MAX/MIN RH 62 93 41 77 50
RH 65 63 79 87 87 90 93 64 47 41 63 72 72 75 75 57 52 51 66
WIND DIR NW NW NW NW NW NW NW N N N N NE E E SE SE SE SE SE
WIND SPD 5 6 5 3 3 4 4 4 5 5 3 2 2 1 1 3 3 4 2
WIND GUST 17 18 14 17 16
CLOUDS FW FW FW FW SC FW SC FW FW FW FW FW FW FW FW FW FW FW FW
CLOUDS(%) 22 25 12 20 46 20 26 7 6 10 19 22 18 9 22 14 12 9 7
VSBY 10 10 10 10 8 5 2 9 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 0 0
MIX HGT 4 4 <1 <1 <1 <1 1 4 5 5 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NW NW NW NW W NW NW N N N N N E E E SE S SE SE
T WIND SPD 19 17 14 9 4 13 12 17 12 10 4 4 3 3 2 5 3 3 3
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 96 83 7 4 2 6 19 76 78 57 2 2 2 2 2 18 14 15 2
MAX LVORI 1 1 4 5 6 5 4 1 1 1 3 3 3 4 4 2 2 2 3
STABILITY B B F G F F B B B B G G G G A B B B G
CEILING None None None None None None None None None
STA PRES 27.76 27.81 27.83 27.92 27.93 28.00 28.04 28.11 28.07
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 57 88 62 89 65 88 65 84
TEMP 61 59 87 73 66 64 88 73 68 66 87 73 69 66 83 71
DEWPT 54 54 64 62 59 58 66 63 61 61 67 66 64 63 67 65
RH 78 83 46 68 78 81 48 71 78 84 52 79 84 90 59 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL FW FW FW FW B1 FW FW SC B1 SC SC SC B1
POP 12HR 0 5 0 30 5 40 20 30
RAIN SHWRS SC SC IS SC
TSTMS 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