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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1101 PM EDT Sun Aug 16 2026
NCZ003-170800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
1101 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 70 89 69 87 66
TEMP 74 72 73 84 87 87 80 75 73 71 72 81 85 86 79 73 68 66 69
DEWPT 70 68 70 73 72 72 72 71 69 68 69 71 69 69 68 66 64 63 65
MIN/MAX RH 94 59 95 56 95
RH 87 87 90 70 61 61 77 87 87 90 90 72 59 57 69 79 87 90 87
WIND DIR SW SW SW W W W NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 1 2 2 5 5 5 3 3 2 3 3 3 3 4 2 3 2 1 1
CLOUDS FW SC SC FW SC SC B1 B2 B1 FW SC FW FW FW FW FW FW FW FW
CLOUDS(%) 20 32 30 20 30 48 69 86 55 24 33 20 21 22 15 12 11 14 8
VSBY 10 9 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10
POP 12HR 5 20 30 5 0
RAIN SHWRS SC
TSTMS IS
Obvis F
MIX HGT <1 <1 <1 4 5 4 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR N NW NW NW NW NW W NW NW NW NW NW NW NW NW
T WIND SPD 6 3 3 13 12 11 8 9 4 8 11 12 6 9 12
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 2 3 64 84 62 4 4 2 4 12 56 52 65 6
MAX LVORI 6 6 6 3 1 1 3 5 6 6 5 3 1 1 3
STABILITY G G A A A A F F F G A A A A G
CEILING None None None 6700 None None None None
STA PRES 28.10 28.11 28.07 28.10 28.10 28.11 28.07
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 68 89 66 82 64 81 63 83
TEMP 87 83 72 71 87 80 69 69 80 75 67 67 79 75 66 66 81 76
DEWPT 67 68 65 66 69 70 67 67 70 69 66 66 69 68 65 64 66 65
RH 52 61 79 84 55 72 93 93 72 82 97 97 72 79 97 93 60 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC B1 B2 B1 B1 B2 B2 B1 B1 B1 B1 SC SC SC
POP 12HR 0 5 40 40 70 60 50 20 20
RAIN SHWRS SC SC IS SC NM NM SC IS SC IS 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
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