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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 PM EDT Sun Aug 16 2026
NCZ003-170800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
931 PM EDT Sun Aug 16 2026
Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed
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 89 71 87 67
TEMP 76 74 73 73 83 87 87 81 76 74 72 72 81 84 86 79 74 70 68 69
DEWPT 72 71 69 70 72 71 71 71 70 69 69 69 70 69 68 68 66 65 63 65
MIN/MAX RH 94 57 91 54 90
RH 87 90 87 90 70 59 59 72 82 84 90 90 69 61 55 69 76 84 84 87
WIND DIR SW SW W W W W W W W NW NW NW NW NW NW NW NW N N N
WIND SPD 4 4 4 4 4 5 4 4 4 4 4 4 4 4 3 3 4 4 4 4
CLOUDS FW FW FW FW FW SC SC B2 B2 SC SC SC FW FW FW SC SC FW FW FW
CLOUDS(%) 16 11 25 22 18 34 40 75 78 48 28 26 16 19 22 31 29 10 15 9
VSBY 10 9 5 9 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 20 30 5 0
RAIN SHWRS IS IS
TSTMS IS IS
Obvis F
MIX HGT <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR SW NW W W NW NW W NW NW W NW NW NW W NW NW
T WIND SPD 3 3 2 2 9 10 11 12 5 1 2 6 9 6 8 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 1 2 41 73 73 6 4 1 1 7 40 49 55 3
MAX LVORI 7 7 7 6 1 1 1 3 5 6 7 5 1 1 1 3
STABILITY F F F A A A A F E E F A A A A G
CEILING None None None 7600 None None None None
STA PRES 28.91 28.92 28.86 28.89 28.90 28.92 28.86
Date 08/19Thu 08/20/26Fri 08/21/26Sat 08/22/26Sun 08/23/26
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 89 70 90 68 83 66 81 65 83
TEMP 86 83 73 71 88 81 71 69 80 75 68 68 78 74 67 67 81 76
DEWPT 66 67 66 67 68 68 68 67 69 68 66 67 68 67 65 65 65 64
RH 51 59 79 87 52 65 90 93 69 79 93 97 71 79 93 93 58 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 SC SC SC
POP 12HR 0 5 40 40 60 60 50 20 20
RAIN SHWRS SC SC IS NM NM SC IS SC IS IS IS
TSTMS SC SC SC IS SC 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