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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Thu Sep 3 2026
NCZ003-040800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
831 PM EDT Thu Sep 3 2026
Date 09/03/26 Fri 09/04/26 Sat 09/05/26 Sun
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 73 93 73 93 68
TEMP 78 76 74 74 88 94 91 83 78 75 74 74 87 91 89 79 73 71 70 68
DEWPT 69 69 68 69 70 69 70 70 70 69 69 69 70 69 70 70 69 69 69 68
MIN/MAX RH 85 45 85 48 99
RH 74 79 82 84 55 44 50 65 76 82 84 84 57 49 54 74 87 93 97100
WIND DIR SW SW SW W W SW SW NW W W W W NW NW NW N NE NE NE NE
WIND SPD 3 3 3 3 3 4 3 2 3 3 3 4 3 5 4 4 4 4 5 6
CLOUDS CL FW CL CL FW FW SC FW FW FW CL CL FW B1 B1 B1 B1 B1 B1 SC
CLOUDS(%) 2 6 2 1 6 16 30 10 22 8 2 2 10 61 61 62 62 52 52 46
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 20 10 40 40
RAIN SHWRS IS SC SC SC SC IS
TSTMS IS SC SC SC
MIX HGT <1 <1 <1 <1 2 7 4 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR W W W W W W W N W W W W NW NW NW W
T WIND SPD 2 2 2 2 5 6 5 1 2 2 2 2 14 10 12 5
DISPERSION VP VP VP VP VP VP VP VP VP VP PR
ADI 1 1 1 2 18 61 32 1 1 1 1 2 79 76 75 4
MAX LVORI 3 4 5 5 2 1 1 4 4 5 5 5 1 1 1 3
STABILITY G G G A A A A G G G G A A A A E
CEILING None None None None None None None 32200 9000
STA PRES 28.94 28.97 28.97 28.92 28.91 28.89 28.88 28.80
Date 09/06Mon 09/07/26Tue 09/08/26Wed 09/09/26Thu 09/10/26
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 82 64 79 61 83 62 87 67 90
TEMP 78 74 66 64 75 73 64 62 79 74 65 63 85 79 70 68 88 79
DEWPT 68 66 63 62 63 61 59 59 62 62 59 60 65 65 62 63 66 66
RH 71 76 90 93 66 66 84 90 56 66 81 90 51 62 76 84 48 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B1 SC SC SC SC SC SC FW SC FW FW FW SC
POP 12HR 60 40 5 20 0 0 5 0 10
RAIN SHWRS IS NM SC IS
TSTMS SC 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