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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Tue Sep 1 2026
NCZ003-020800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
431 PM EDT Tue Sep 1 2026
Date 09/01/26 Wed 09/02/26 Thu 09/03/26 Fri
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 94 71 94 72
TEMP 89 82 78 75 74 74 85 91 92 84 79 76 74 74 85 91 92 85 77 74 72 74
DEWPT 69 70 68 66 65 67 69 69 70 71 68 67 66 66 71 71 72 72 70 69 67 68
MIN/MAX RH 84 48 82 52 85
RH 52 67 71 74 74 79 59 49 49 65 69 74 76 76 63 52 52 65 79 84 84 82
WIND DIR NW NW NW NW NW NW N N S S SW SW NW NW N S SW W W NW NW NW
WIND SPD 1 1 2 1 1 1 0 0 1 1 1 1 1 2 0 2 3 1 1 1 1 2
CLOUDS SC CL CL CL CL CL CL FW FW FW FW CL CL FW FW FW SC FW FW CL CL CL
CLOUDS(%) 29 5 3 3 2 4 5 13 19 17 7 5 4 8 6 22 26 14 9 3 4 5
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 10 5
MIX HGT 5 <1 <1 <1 <1 <1 4 7 4 <1 <1 <1 <1 <1 4 7 5 <1
T WIND DIR W W NW NW NW NW NW W NW S W NW NW NW NW W W SW
T WIND SPD 3 2 3 4 4 4 4 4 2 3 3 3 4 4 3 4 3 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 21 1 2 2 2 4 25 36 13 2 2 2 2 4 18 37 22 3
MAX LVORI 2 3 3 3 4 4 2 1 2 3 3 3 4 4 2 1 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 28.19 28.22 28.24 28.18 28.19 28.19 28.22 28.16
Date 09/04Sat 09/05/26Sun 09/06/26Mon 09/07/26Tue 09/08/26
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 95 71 91 66 84 63 82 62 84
TEMP 93 85 73 73 87 80 70 67 80 76 67 65 79 75 66 64 81 77
DEWPT 70 72 69 69 70 70 68 66 68 67 64 63 68 67 63 62 66 65
RH 47 65 87 87 57 72 93 97 67 74 90 93 69 76 90 93 60 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW SC B1 SC SC SC B1 B1 SC B1 B1 SC SC B1 SC
POP 12HR 20 10 30 20 40 30 30 10 20
RAIN SHWRS IS SC IS IS SC SC IS SC IS
TSTMS IS 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