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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Mon Aug 24 2026
NCZ003-242000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
631 AM EDT Mon Aug 24 2026
Date Mon 08/24/26 Tue 08/25/26 Wed 08/26/26
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 83 58 84 62 85
TEMP 62 75 81 81 73 66 61 58 60 73 81 82 74 68 64 63 66 76 82 84 77
DEWPT 57 59 57 58 58 57 55 54 53 56 57 59 61 59 58 56 59 65 67 68 67
MAX/MIN RH 43 85 43 81 58
RH 84 58 44 46 59 73 81 86 78 55 44 46 64 73 81 78 78 69 61 59 71
WIND DIR N NW W NW NW N N NW NW N S S N N N N N S S S S
WIND SPD 0 2 2 4 3 3 2 1 1 1 2 3 0 0 0 0 0 3 6 5 1
CLOUDS FW CL FW SC FW FW FW FW FW FW FW SC SC FW FW FW FW SC B1 B1 B1
CLOUDS(%) 15 4 17 35 18 13 16 20 15 19 23 31 28 17 17 20 23 41 51 51 57
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 30
RAIN SHWRS SC SC SC
TSTMS IS IS IS
MIX HGT <1 4 6 5 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR NW W W NW N N N N N N SW SW S SW NW NW NW S SW S SW
T WIND SPD 3 11 6 8 5 5 5 5 5 3 3 4 2 1 2 2 1 10 11 9 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 3 64 53 46 3 3 3 3 6 13 22 30 1 1 1 1 1 36 49 34 4
MAX LVORI 5 1 1 1 3 3 4 5 4 2 2 2 3 4 4 5 4 3 1 1 3
STABILITY A A A A G G G G A A A A G G G G A A C C F
CEILING None None None None None None None None None None
STA PRES 28.15 28.13 28.18 28.19 28.23 28.19 28.21 28.19 28.22 28.17
Date Thu 08/27/26Fri 08/28/26Sat 08/29/26Sun 08/30/26
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 65 85 64 85 65 86 66 86
TEMP 68 68 83 75 68 67 81 77 67 67 83 78 68 68 83 79
DEWPT 66 67 70 71 67 66 70 70 66 65 69 70 67 67 70 70
RH 93 97 65 87 97 97 69 79 97 93 63 76 97 97 65 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B2 B1 SC SC B1 SC SC SC B1 SC SC SC SC
POP 12HR 40 70 30 50 20 30 10 20
RAIN SHWRS SC SC SC NM SC IS SC IS SC IS
TSTMS IS IS SC IS SC IS 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