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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 AM EDT Sun Aug 16 2026
VAZ012-162000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
1001 AM EDT Sun Aug 16 2026
Date Sun 08/16/26 Mon 08/17/26 Tue 08/18/26
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 83 68 86 65 84
TEMP 77 82 83 79 72 71 69 69 76 82 81 73 68 67 65 66 74 80 83 75
DEWPT 72 69 68 69 67 66 66 67 70 70 70 68 67 66 65 66 67 65 65 63
MAX/MIN RH 60 96 61 100 54
RH 85 65 61 72 84 84 90 93 82 67 69 84 97 97100100 79 60 55 66
WIND DIR W W W W W W W W W W W NW W NW NW NW NW NW NW NW
WIND SPD 2 3 3 3 4 4 3 3 3 4 3 2 2 1 1 1 2 2 2 1
CLOUDS SC B1 SC SC SC B1 SC B1 B1 SC B1 B1 B1 B1 B1 B1 SC SC FW FW
CLOUDS(%) 34 54 31 27 46 57 49 62 60 40 65 64 67 52 58 53 49 30 16 6
VSBY 10 7 10 10 7 2 2 2 10 7 10 3 0 0 5 10 10 10 10 10
POP 12HR 20 40 50 20 5
RAIN SHWRS IS IS SC IS IS SC IS IS
TSTMS IS IS IS SC IS
Obvis PF PF PF
MIX HGT 3 5 4 <1 <1 <1 <1 1 3 4 3 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR W W W SW SW W W W W W W W W NW NW N N W W NW
T WIND SPD 12 16 11 5 9 4 6 10 11 20 10 5 3 3 6 5 5 9 10 10
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 43 86 61 3 6 3 3 14 40110 38 3 2 2 3 8 23 53 62 5
MAX LVORI 3 1 1 3 4 6 6 5 3 1 3 5 7 8 9 8 3 1 1 3
STABILITY A B A G E E F B B A B F F F F B A A A G
CEILING None None 1000 None 2500 100 None None None
STA PRES 27.28 27.24 27.23 27.24 27.20 27.20 27.20 27.24 27.22
Date Wed 08/19/26Thu 08/20/26Fri 08/21/26Sat 08/22/26
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 59 88 64 84 60 81 60 80
TEMP 62 63 83 77 66 66 80 73 63 63 77 72 62 63 76 71
DEWPT 59 60 63 63 61 63 66 65 62 62 65 64 62 62 64 62
RH 90 90 51 62 84 90 62 76 97 97 67 76100 97 66 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 0 0 10 50 40 50 40 40
RAIN SHWRS IS SC SC SC SC SC SC IS IS SC
TSTMS SC SC IS IS SC 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