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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Aug 13 2026
NCZ003-140800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 PM EDT Thu Aug 13 2026
Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun
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 70 89 71 89 71
TEMP 74 72 71 73 84 87 86 81 76 74 72 74 85 88 84 80 75 73 71 74
DEWPT 71 70 69 70 73 74 74 75 73 72 70 72 76 76 76 76 74 72 71 72
MIN/MAX RH 98 63 95 66 98
RH 90 93 93 90 70 65 68 82 90 93 93 93 75 68 77 88 97 97100 93
WIND DIR NW NW NW NW W W W N NW NW NW NW NW NW N N N N N N
WIND SPD 3 2 3 2 2 3 3 0 1 1 1 1 1 2 2 0 0 0 0 0
CLOUDS B2 SC SC B1 SC SC B1 SC SC SC SC SC SC B2 B2 B1 B2 B1 B1 SC
CLOUDS(%) 80 46 31 53 38 48 56 36 41 39 41 45 45 84 84 60 73 55 58 49
VSBY 10 9 8 9 10 10 10 10 10 10 10 10 10 6 10 10 10 10 10
POP 12HR 0 30 10 80 20
RAIN SHWRS IS IS IS IS O O IS IS
TSTMS IS IS IS SC SC IS
MIX HGT <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 3 5 2 <1
T WIND DIR NW NW NW NW NW W W SW W NW N N N W SE E
T WIND SPD 3 3 3 3 11 2 8 4 2 5 6 4 3 2 4 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 4 43 13 35 2 1 3 3 4 14 14 11 2
MAX LVORI 7 7 7 6 3 3 3 5 7 6 6 6 3 3 4 6
STABILITY F G F B A A B G F G F A A B B F
CEILING 23900 None None None None None None 2500 2200
STA PRES 28.14 28.16 28.23 28.20 28.21 28.24 28.28 28.26
Date 08/16Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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 91 72 92 70 88 68 88 69 90
TEMP 90 83 75 75 90 84 72 73 86 81 71 71 86 82 72 71 88 82
DEWPT 74 74 70 69 71 71 69 69 71 71 68 68 70 71 68 67 70 70
RH 60 74 84 82 54 65 90 87 61 72 90 90 59 69 87 87 55 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC FW FW B1 SC FW SC B1 SC SC SC SC FW FW FW SC
POP 12HR 30 20 40 10 50 30 20 10 20
RAIN SHWRS SC IS IS SC SC SC IS IS
TSTMS SC IS SC SC IS 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