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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Thu Aug 13 2026
VAZ012-140800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 PM EDT Thu Aug 13 2026
Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun
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 66 87 68 88 67
TEMP 80 74 69 68 68 68 77 82 85 78 72 70 69 69 80 86 83 76 71 70 69 68
DEWPT 70 70 68 67 67 68 70 70 70 69 69 68 67 69 73 72 72 71 69 68 67 68
MIN/MAX RH 100 62 98 64 100
RH 72 87 97 97 97100 79 67 61 74 90 93 93100 79 63 70 85 93 93 93100
WIND DIR W W W W W W W W W W W W W W NW NW NW W SW SW W SW
WIND SPD 4 3 2 3 3 2 2 3 2 1 2 2 2 1 2 2 2 1 1 1 2 2
CLOUDS B1 B1 B1 SC B1 B1 B1 B1 SC SC B1 B1 SC B1 B1 B2 B2 SC SC SC B1 SC
CLOUDS(%) 55 58 55 48 65 63 68 60 43 33 53 53 45 64 55 76 76 43 35 44 56 49
VSBY 10 10 10 7 6 5 10 10 10 10 10 10 10 9 10 3 6 10 10 7 0
POP 12HR 10 40 40 60 20
RAIN SHWRS IS SC IS IS IS SC IS IS IS NM NM IS IS
TSTMS IS IS IS IS SC IS IS SC SC IS
Obvis PF PF
MIX HGT 3 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR W W W SW W W NW W W W W NW N SW W NW W W
T WIND SPD 11 4 4 4 4 5 8 8 13 8 5 5 1 1 5 9 6 1
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 40 2 2 2 2 6 23 35 71 4 3 3 1 1 21 53 29 1
MAX LVORI 3 6 8 8 8 8 3 3 1 3 6 6 8 10 3 1 3 6
STABILITY C F F F F B B B A G F F F B B B B F
CEILING None None 3600 1300 None 7400 None None 2700 None
STA PRES 27.28 27.31 27.32 27.39 27.35 27.38 27.40 27.43 27.41
Date 08/16Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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 90 68 88 65 85 63 87 64 88
TEMP 86 80 72 70 83 77 68 66 80 75 66 65 83 77 68 66 83 77
DEWPT 70 68 66 66 68 68 65 66 67 66 63 64 66 65 63 63 66 65
RH 59 67 81 87 61 74 90100 65 74 90 97 57 67 84 90 57 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC SC B2 SC SC B1 B1 SC SC SC SC FW FW SC SC
POP 12HR 20 20 60 20 40 20 20 10 20
RAIN SHWRS IS IS IS NM IS IS SC IS IS IS
TSTMS IS IS SC IS SC 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