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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 AM EDT Sat Aug 15 2026
NCZ003-160800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
201 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 71 88 71 90 72
TEMP 72 73 84 88 85 80 75 72 71 73 83 88 88 82 76 74 72 74
DEWPT 70 72 75 75 76 76 73 72 71 72 75 74 74 74 72 70 68 70
MIN/MAX RH 95 64 99 61 89
RH 93 97 74 66 75 88 94100100 97 77 63 63 77 87 87 87 87
WIND DIR NW N SE W NW N N N N N SW W W W W W W NW
WIND SPD 1 1 1 2 2 0 0 0 0 0 2 4 3 1 1 1 2 3
CLOUDS FW SC SC B1 B1 SC SC SC SC SC FW SC SC CL FW FW FW SC
CLOUDS(%) 24 37 37 59 56 45 40 40 47 44 25 43 45 3 11 21 20 31
VSBY 10 9 10 10 10 10 10 9 7 5 10 10 10 10 10 10 10 10
POP 12HR 10 40 30 40 5
RAIN SHWRS SC SC IS IS IS SC IS
TSTMS IS IS IS IS IS IS IS
Obvis PF PF
MIX HGT <1 <1 3 4 3 <1 <1 <1 <1 <1 3 6 5 <1 <1 <1 <1 <1
T WIND DIR NW N N NW NW S NE NE E E W W W W W W NW NW
T WIND SPD 6 5 6 9 8 1 1 2 2 1 10 13 11 3 4 4 5 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 3 6 24 42 27 1 1 1 1 1 42102 70 2 2 2 3 9
MAX LVORI 6 6 3 1 3 6 9 10 10 8 3 1 1 4 6 6 6 5
STABILITY G A A B B F G G F A A A A G G G G A
CEILING None None 3500 None None None None None None
STA PRES 28.24 28.27 28.22 28.22 28.19 28.17 28.09 28.07 28.06
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 92 70 89 67 90 70 90 66 85
TEMP 90 81 72 72 87 81 69 70 87 82 71 72 89 77 68 68 83 74
DEWPT 72 72 70 69 68 68 64 65 69 70 67 68 70 69 66 65 67 67
RH 56 74 93 90 53 65 84 84 55 67 87 87 54 76 93 90 59 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC FW FW SC SC FW FW SC SC SC SC B1 B1 B1 B1 B1
POP 12HR 10 10 10 5 10 5 40 40 40
RAIN SHWRS SC SC IS SC
TSTMS 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