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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Tue Sep 1 2026
NCZ001-012000-
RAWS 310141
36.40N 81.29W Elev. 3009 ft
731 AM EDT Tue Sep 1 2026
Date Tue 09/01/26 Wed 09/02/26 Thu 09/03/26
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 82 65 84 67 86
TEMP 66 78 82 82 75 70 69 65 69 80 84 83 76 73 70 67 69 83 86 84 77
DEWPT 62 65 65 66 66 64 63 62 63 65 65 66 66 65 64 62 63 66 66 67 67
MAX/MIN RH 56 89 54 85 52
RH 87 64 56 58 74 81 81 90 81 60 53 57 71 76 81 84 81 57 51 57 71
WIND DIR NW NW NW NW NW NW NW N N N S SW W NW NW NW NW NW S W W
WIND SPD 2 2 3 3 2 2 2 2 2 1 1 2 1 1 1 1 2 1 2 3 2
CLOUDS FW FW FW SC FW CL FW CL FW FW SC SC SC FW FW CL SC SC SC SC SC
CLOUDS(%) 10 9 25 36 20 5 9 5 8 8 34 36 36 16 8 1 26 26 41 41 33
VSBY 8 10 10 10 10 10 9 5 8 10 10 10 10
POP 12HR 5 0 10 0 20
RAIN SHWRS IS IS
TSTMS IS IS
MIX HGT <1 4 6 5 <1 <1 <1 <1 <1 4 6 4 <1 <1 <1 <1 <1 5 7 6 <1
T WIND DIR NW NW NW NW W NW NW NW NW NW W SW SW W W NW NW NW W SW SW
T WIND SPD 3 8 4 3 1 3 3 4 3 4 2 2 6 3 4 4 4 6 3 5 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 3 38 32 21 1 2 2 2 3 24 16 11 3 2 2 2 4 41 28 40 3
MAX LVORI 5 3 1 2 4 4 5 5 5 2 2 2 3 4 5 5 4 1 2 1 3
STABILITY A A A 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 None
STA PRES 27.37 27.32 27.34 27.34 27.37 27.32 27.32 27.31 27.34 27.28
Date Fri 09/04/26Sat 09/05/26Sun 09/06/26Mon 09/07/26
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 67 85 65 82 61 76 58 74
TEMP 70 70 85 78 69 67 80 75 66 63 74 70 63 60 71 68
DEWPT 64 63 66 65 63 64 65 65 63 62 65 64 62 60 63 62
RH 81 78 53 64 81 90 60 71 90 97 74 81 97100 76 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC CL FW SC SC SC SC B1 B1 SC B1 B1 B1 B1 B1 B1
POP 12HR 5 20 10 30 30 50 30 30
RAIN SHWRS IS SC SC SC SC SC IS SC
TSTMS IS SC IS 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