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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sat Aug 15 2026
VAZ012-160800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 AM EDT Sat Aug 15 2026
Date 08/14/26 Sat 08/15/26 Sun 08/16/26 Mon
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 68 86 68 87 69
TEMP 68 69 78 84 84 75 70 69 68 69 79 84 87 79 72 71 70 69
DEWPT 67 69 72 71 72 70 68 68 68 69 71 70 70 69 67 67 66 67
MIN/MAX RH 100 61 100 56 92
RH 97100 82 65 67 84 93 97100100 77 63 57 72 84 87 87 93
WIND DIR NW W W NW NW NW W W W W W W W W W W W W
WIND SPD 1 1 2 2 2 1 1 1 2 2 3 3 3 2 3 4 4 3
CLOUDS SC B2 B1 B1 B1 SC SC SC B1 B1 FW SC SC B1 B1 SC B1 B1
CLOUDS(%) 41 80 58 52 55 36 43 45 56 59 24 35 36 51 51 32 53 60
VSBY 4 3 10 10 10 10 9 5 3 5 10 10 10 10 10 8 10 10
POP 12HR 30 20 30 10 30
RAIN SHWRS IS IS SC SC SC
TSTMS IS IS IS SC IS
Obvis PF PF
MIX HGT <1 <1 3 4 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 1
T WIND DIR NW N NW NW NW NW SW SW W SW W W W SW W W W NW
T WIND SPD 4 4 5 11 9 1 1 3 4 4 12 20 16 8 6 3 8 12
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 5 19 59 37 1 1 2 2 5 49135 62 4 3 2 5 20
MAX LVORI 9 9 3 1 3 6 8 8 8 9 3 1 1 3 5 6 5 5
STABILITY F B B B B G F F F B A A A F F F E B
CEILING None 300 None None 1100 None None None None
STA PRES 27.40 27.43 27.39 27.38 27.35 27.33 27.26 27.23 27.23
Date 08/17Tue 08/18/26Wed 08/19/26Thu 08/20/26Fri 08/21/26
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 86 65 84 60 88 66 85 60 82
TEMP 81 76 67 65 80 74 62 63 83 77 67 67 80 73 62 63 77 71
DEWPT 69 68 66 65 64 63 60 61 63 65 63 64 66 65 62 61 63 62
RH 67 76 97100 58 69 93 93 51 67 87 90 62 76100 93 62 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC B1 SC FW FW FW FW FW SC SC B1 B1 B1 SC B1 B1
POP 12HR 50 20 10 5 5 20 40 30 40
RAIN SHWRS SC IS IS IS SC SC IS IS SC
TSTMS SC IS SC 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