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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Fri Aug 14 2026
NCZ003-142000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
401 AM EDT Fri Aug 14 2026
Date Fri 08/14/26 Sat 08/15/26 Sun 08/16/26
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 91 71 89 70 90
TEMP 70 73 85 90 87 81 76 73 72 74 85 88 84 80 75 72 71 73 84 89 87 82
DEWPT 69 71 76 75 75 76 73 72 70 72 76 75 75 76 74 72 71 72 76 75 75 76
MAX/MIN RH 62 96 66 100 63
RH 97 93 75 62 68 85 90 97 93 93 75 66 74 88 97100100 97 77 64 68 82
WIND DIR NW NW NW W NW SW NW N NW NW NW NW NE N N N N N SW W W W
WIND SPD 1 2 2 3 3 1 1 1 1 1 2 3 2 0 0 0 0 0 2 4 3 1
CLOUDS SC SC B1 B2 B1 B1 B2 SC B1 SC B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1 FW
CLOUDS(%) 38 47 59 74 67 53 84 50 51 47 51 68 61 63 69 59 54 54 38 59 59 22
VSBY 10 10 10 10 10 10 10 10 9 8 10 10 5 10 10 10 10 3 10 10 10 10
POP 12HR 30 20 60 30 40
RAIN SHWRS IS SC IS SC SC SC SC SC IS IS SC SC
TSTMS IS SC IS IS SC SC SC SC SC
MIX HGT <1 <1 3 3 3 <1 <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NW NW W NW W SW W NW NW NW NW NW NW NE E E SE S W W W W
T WIND SPD 4 3 6 12 6 2 2 3 4 6 12 10 10 4 4 3 2 3 6 12 12 6
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 3 27 50 23 1 1 2 2 7 49 50 37 2 2 2 1 3 24 49 71 3
MAX LVORI 8 6 3 1 3 5 7 8 6 6 3 1 3 6 8 10 10 8 3 1 1 5
STABILITY G A B B B F F F F A B B B F F F F A A C A G
CEILING 5000 5900 8700 None None 3500 6000 None None None
STA PRES 28.21 28.18 28.20 28.19 28.23 28.20 28.23 28.21 28.20 28.11
Date Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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 72 93 70 88 67 88 69 91
TEMP 74 75 92 83 73 72 86 81 69 70 86 82 72 71 88 82
DEWPT 71 71 72 73 70 70 71 71 67 67 70 71 68 68 70 71
RH 90 87 52 72 90 93 61 72 93 90 59 69 87 90 55 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC SC SC SC SC FW SC SC SC SC SC SC
POP 12HR 5 10 10 20 10 10 10 20
RAIN SHWRS IS IS
TSTMS 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