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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri Aug 14 2026
NCZ001-150800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 PM EDT Fri Aug 14 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 66 76 65 79 66
TEMP 70 68 67 68 72 75 76 69 68 67 66 66 73 78 76 70 69 69 68 67
DEWPT 65 65 64 66 66 66 66 65 65 65 64 65 65 66 66 66 65 64 63 64
MIN/MAX RH 96 72 95 65 90
RH 84 90 90 93 81 74 71 87 90 93 93 97 76 67 71 87 87 84 84 90
WIND DIR NW W NW NW NW NW NW NW W W W W W W W W W W W W
WIND SPD 10 12 11 10 6 6 5 4 5 5 6 6 6 6 6 6 10 16 17 17
CLOUDS SC SC SC B1 SC B1 B1 B1 SC SC SC SC FW SC SC FW FW FW FW FW
CLOUDS(%) 48 37 47 51 49 63 68 53 34 33 41 42 25 43 43 19 13 11 16 22
VSBY 10 9 6 5 10 10 10 10 10 8 2 0 10 10 10 10 10 10 10
POP 12HR 20 50 10 20 5
RAIN SHWRS SC SC IS IS
TSTMS SC SC IS IS
Obvis PF PF
MIX HGT <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NW NW NW NW NW NW NW W SW W W W W W W W
T WIND SPD 4 4 4 4 10 4 8 1 2 2 2 5 20 17 17 12
DISPERSION FR FR FR VP PR PR PR PR FR GD GD
ADI 4 4 4 4 31 17 24 1 1 1 2 6 68 91 82 6
MAX LVORI 5 6 6 6 3 3 3 7 7 7 7 6 3 1 3 5
STABILITY D D D C B C C E F F E B B B B F
CEILING None None None 700 None None None None None
STA PRES 26.86 26.87 26.90 26.87 26.85 26.83 26.81 26.75
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 79 64 76 62 78 64 78 62 74
TEMP 78 72 67 64 73 69 64 63 75 70 66 65 76 69 64 62 71 65
DEWPT 64 64 64 63 64 63 62 61 62 62 61 61 63 63 62 61 62 60
RH 62 76 90 97 73 81 93 93 64 76 84 87 64 81 93 97 73 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 SC SC B1 SC SC SC SC SC SC SC B1 B1 B1 B1 B1
POP 12HR 40 20 30 5 20 10 40 30 50
RAIN SHWRS SC IS SC IS SC SC SC SC
TSTMS SC IS SC 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
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