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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Mon Aug 31 2026
NCZ019-010800-
RAWS 312001
36.23N 81.32W Elev. 2380 ft
401 PM EDT Mon Aug 31 2026
Date 08/31/26 Tue 09/01/26 Wed 09/02/26 Thu
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 69 89 70 90 70
TEMP 84 76 73 71 70 70 83 87 87 79 75 73 71 72 85 89 88 79 77 74 73 72
DEWPT 69 68 67 66 65 65 68 67 68 68 67 66 65 66 68 67 68 69 67 67 66 66
MIN/MAX RH 84 50 84 49 82
RH 61 76 81 84 84 84 61 52 53 69 76 79 81 81 57 48 52 72 71 79 79 81
WIND DIR W N NW NW NW NW N N NW W NW NW NW NW N N S N W NW N NW
WIND SPD 1 0 1 1 1 2 0 0 1 1 2 1 1 1 0 0 1 0 1 1 0 1
CLOUDS SC FW FW FW CL FW FW FW FW FW CL CL CL CL CL FW FW FW FW FW CL CL
CLOUDS(%) 29 24 16 15 3 8 6 25 15 14 1 4 0 3 3 19 13 21 23 12 2 2
VSBY 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 0 5 5
MIX HGT 4 <1 <1 <1 <1 <1 5 6 4 <1 <1 <1 <1 <1 5 7 5 <1
T WIND DIR N E NW NW NW NW N N N SW NW NW NW NW NW W W S
T WIND SPD 5 1 2 3 3 3 8 6 4 1 3 3 4 3 3 3 1 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 28 1 1 2 2 3 47 50 25 1 2 2 2 3 20 27 7 1
MAX LVORI 2 4 5 5 5 5 1 1 2 4 4 4 5 5 2 2 2 3
STABILITY A G G G G A A A A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.04 28.04 28.07 28.01 28.02 28.03 28.05 27.99
Date 09/03Fri 09/04/26Sat 09/05/26Sun 09/06/26Mon 09/07/26
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 90 71 90 70 86 65 77 61 76
TEMP 89 81 73 72 88 79 72 70 84 76 69 66 74 70 65 62 74 69
DEWPT 68 70 67 67 70 70 67 66 68 67 65 63 65 63 61 59 63 60
RH 50 69 81 84 55 74 84 87 59 74 87 90 74 78 87 90 69 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW B1 SC FW FW B1 B1 SC B1 B1 B1 SC SC SC
POP 12HR 10 5 40 10 30 30 30 30 20
RAIN SHWRS SC SC SC SC SC SC IS IS
TSTMS SC 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