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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Thu Aug 13 2026
VAZ012-140800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
131 AM EDT Thu Aug 13 2026
Date 08/12/26 Thu 08/13/26 Fri 08/14/26 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 64 86 66 87 67
TEMP 64 65 66 76 82 82 74 69 68 67 68 77 82 85 77 70 69 68 69
DEWPT 65 65 67 70 70 70 69 67 67 66 68 72 71 71 70 68 68 67 68
MIN/MAX RH 100 63 100 64 99
RH 104100104 82 67 67 84 93 97 97100 85 69 63 79 93 97 97 97
WIND DIR W W W W W W NW NW SW W W W W W W W W W W
WIND SPD 3 3 3 3 3 3 2 1 1 1 2 2 2 2 1 1 1 1 1
CLOUDS SC B1 B2 B1 B1 B1 SC SC B1 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1
CLOUDS(%) 49 66 77 54 58 59 34 50 54 60 79 82 71 54 57 57 51 51 65
VSBY 9 7 7 10 10 10 10 10 7 6 7 10 10 10 10 10 10 10 9
POP 12HR 40 30 20 60 40
RAIN SHWRS IS NM SC SC SC SC SC SC
TSTMS IS IS IS SC
MIX HGT <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1
T WIND DIR SW W W W W W W SW SW W W W W W W W NW NW NW
T WIND SPD 3 8 8 6 14 14 6 4 6 5 6 11 18 18 10 8 6 4 6
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 4 8 19 73 62 3 2 3 3 7 32 86 66 5 4 3 2 8
MAX LVORI 10 9 8 3 1 1 5 6 8 8 8 4 3 1 4 6 8 8 8
STABILITY F F B B B B G F F F B B B B F F F F B
CEILING 0 600 None None 100 200 None None None
STA PRES 27.24 27.28 27.25 27.28 27.31 27.34 27.31 27.34 27.37
Date 08/15Sun 08/16/26Mon 08/17/26Tue 08/18/26Wed 08/19/26
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 87 67 90 69 88 65 85 62 86
TEMP 82 77 68 68 85 79 71 70 86 74 67 66 80 75 64 64 82 76
DEWPT 72 70 67 68 71 70 68 68 70 69 66 66 68 67 63 64 66 66
RH 72 79 97100 63 74 90 93 59 84 97100 67 76 97100 58 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 SC B1 SC B1 SC FW SC B1 B1 B1 B1 B1 SC SC SC SC
POP 12HR 70 20 40 20 50 40 40 20 20
RAIN SHWRS SC NM IS SC IS SC SC IS SC IS IS IS
TSTMS IS SC IS SC IS SC SC 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