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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sat Aug 22 2026
NCZ003-230800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
401 PM EDT Sat Aug 22 2026
Date 08/22/26 Sun 08/23/26 Mon 08/24/26 Tue
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 64 83 59 84 60
TEMP 81 73 69 67 65 65 74 80 82 75 66 62 60 61 75 81 83 75 67 62 61 62
DEWPT 70 69 68 66 64 64 63 59 58 59 57 56 55 56 58 58 58 58 56 54 53 54
MIN/MAX RH 99 44 86 42 77
RH 69 87 97 97 97 97 69 49 44 58 73 81 84 84 55 46 43 55 68 75 75 75
WIND DIR S W SW W NW NW NW NW NW NW NW NW NW NW NW W W W N N N N
WIND SPD 3 3 3 4 5 5 6 6 5 3 3 3 3 4 3 4 4 2 4 4 4 4
CLOUDS B1 B2 B1 FW FW CL CL FW FW FW FW FW FW FW CL FW FW SC SC FW FW SC
CLOUDS(%) 59 82 53 16 15 0 2 7 13 25 11 9 7 20 4 20 14 32 32 22 21 29
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 0 0 0 0
RAIN SHWRS SC NM SC
TSTMS IS IS IS
MIX HGT 3 <1 <1 <1 <1 <1 3 6 6 <1 <1 <1 <1 <1 3 6 7 <1
T WIND DIR E S SW SW W NW NW NW NW NW NW NW NW NW NW W W NW
T WIND SPD 1 8 3 3 4 6 14 12 10 4 8 3 3 2 5 5 6 4
DISPERSION VP VP VP PR VP VP VP VP VP VP VP VP
ADI 5 4 2 2 2 7 61 84 81 2 4 2 2 2 25 42 57 2
MAX LVORI 3 6 8 10 9 6 1 1 1 3 3 5 5 5 2 1 1 3
STABILITY A F G F F A B B A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.88 28.88 28.94 28.92 28.98 29.00 29.02 28.99
Date 08/25Wed 08/26/26Thu 08/27/26Fri 08/28/26Sat 08/29/26
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 84 64 86 67 84 66 85 67 86
TEMP 81 75 65 66 84 78 69 67 81 76 68 68 83 77 69 68 84 78
DEWPT 58 60 59 59 65 66 67 67 70 69 68 68 69 69 67 67 68 69
RH 46 60 81 78 53 67 93100 69 79100100 63 76 93 97 59 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW SC B1 SC B1 B2 B1 SC SC B1 SC SC SC B1
POP 12HR 0 0 20 40 60 40 30 20 30
RAIN SHWRS IS SC IS SC NM SC IS IS SC IS IS SC
TSTMS IS IS SC IS SC 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
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