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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sat Aug 22 2026
VAZ012-222000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
331 AM EDT Sat Aug 22 2026
Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26
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 61 76 52 77
TEMP 64 67 73 79 78 69 66 63 62 61 67 73 72 65 58 55 53 54 70 75 73 64
DEWPT 62 65 66 64 64 64 62 61 59 58 59 56 55 54 53 52 51 52 55 53 52 52
MAX/MIN RH 59 99 51 95 45
RH 93 93 79 60 62 84 87 93 90 90 75 55 55 68 83 90 93 93 59 46 48 65
WIND DIR N SW W W W W W W W NW NW W W W W W W W W NW NW NW
WIND SPD 0 1 2 4 5 5 4 5 6 3 3 3 3 2 1 1 1 2 3 3 3 1
CLOUDS B2 B1 SC SC B1 B1 B1 SC SC FW FW CL FW FW FW FW FW FW FW FW FW FW
CLOUDS(%) 83 63 46 29 63 68 64 33 42 22 11 5 12 10 25 11 14 13 14 17 22 16
VSBY 2 2 10 10 10 10 10 8 7 7 10 10 10 10 10 10 10 1 10 10 10
POP 12HR 50 40 0 0 0
RAIN SHWRS SC SC IS
TSTMS SC SC
MIX HGT <1 <1 3 5 3 <1 <1 <1 1 1 3 6 6 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR SE SE NW NW W SW SW W NW NW NW NW W W W W W NW W W W NW
T WIND SPD 4 2 6 8 5 8 5 5 14 13 17 19 13 11 4 5 3 4 16 11 9 5
DISPERSION VP PR VP PR PR VP VP VP VP VP
ADI 2 2 27 50 20 5 4 3 10 23 75134101 5 2 3 2 4 82 71 58 3
MAX LVORI 8 6 3 1 2 4 6 6 5 4 3 1 1 3 5 6 7 6 1 1 1 3
STABILITY F B A A C E E F E A A A A G G G G A A A A G
CEILING None 2900 None None None None None None None None
STA PRES 27.26 27.20 27.20 27.20 27.25 27.24 27.27 27.27 27.30 27.29
Date Tue 08/25/26Wed 08/26/26Thu 08/27/26Fri 08/28/26
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 52 81 56 84 61 82 60 84
TEMP 53 54 77 70 59 59 80 72 63 63 77 71 62 62 80 73
DEWPT 49 50 54 56 54 55 60 62 61 62 66 65 62 62 65 64
RH 86 86 45 61 83 87 51 71 93 97 69 81100100 60 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW SC FW FW SC SC B1 SC B1 B1 B2 SC SC B1 SC
POP 12HR 0 5 0 30 20 60 20 20
RAIN SHWRS SC IS SC NM IS IS
TSTMS IS 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