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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Aug 12 2026
VAZ018-122000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Wed Aug 12 2026
Date Wed 08/12/26 Thu 08/13/26 Fri 08/14/26
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 80 69 89 70 87
TEMP 73 79 80 74 72 71 70 71 81 86 85 76 74 72 71 72 81 85 84 76
DEWPT 66 66 65 64 68 68 67 68 72 72 72 71 70 69 68 69 73 73 73 72
MAX/MIN RH 60 92 61 93 67
RH 79 64 60 71 87 90 90 90 74 63 65 85 87 90 90 90 77 67 70 87
WIND DIR NW NW NW NW NW NW NW NW W W W W W W W W W W W NW
WIND SPD 6 5 5 4 4 4 4 5 5 5 5 3 3 2 3 4 5 6 6 4
WIND GUST 19 16 17 17 14 14 16 17 18 16 17 13 17 19 18 16
CLOUDS B1 SC SC SC SC B1 B1 SC SC SC SC B2 B1 B1 B1 B1 B2 B2 B2 B1
CLOUDS(%) 64 41 40 45 45 58 51 39 39 44 31 75 59 69 66 66 70 73 73 56
VSBY 10 10 10 10 10 8 3 5 10 10 10 7 10 10 4 1 4 10 10 10
POP 12HR 20 30 30 50 60
RAIN SHWRS IS IS IS SC SC SC SC SC SC SC NM NM SC
TSTMS IS IS IS IS IS IS SC SC
MIX HGT 2 3 4 <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 3 4 4 1
T WIND DIR W NW NW S W NW W W SW SW W W W W W NW NW NW NW NW
T WIND SPD 14 17 5 3 4 5 3 3 5 10 16 9 3 11 11 10 14 13 9 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 41 74 27 2 3 4 2 3 24 54 84 4 2 5 5 12 46 52 33 5
MAX LVORI 3 1 2 5 6 6 6 6 3 1 1 5 6 6 6 5 3 1 3 5
STABILITY C A A E E E E A A A A F F F F C C C C E
CEILING None None None None None None 3100 2500 100 2600
STA PRES 27.77 27.72 27.73 27.73 27.76 27.73 27.77 27.80 27.85 27.86
Date Sat 08/15/26Sun 08/16/26Mon 08/17/26Tue 08/18/26
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 69 86 69 90 72 88 68 85
TEMP 72 70 83 77 71 71 87 80 74 73 86 78 70 69 83 75
DEWPT 69 68 71 70 67 67 72 72 69 69 71 70 67 66 68 67
RH 90 93 67 79 87 87 61 77 84 87 61 76 90 90 61 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC B1 SC SC SC SC SC SC SC B1 FW SC SC SC
POP 12HR 30 40 10 20 20 30 10 20
RAIN SHWRS SC SC SC IS IS SC IS
TSTMS IS 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