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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Tue Sep 8 2026
NCZ003-090800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
401 PM EDT Tue Sep 8 2026
Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 60 86 63 90 66
TEMP 80 74 66 63 61 62 76 83 85 78 69 67 64 65 81 87 89 81 72 69 67 69
DEWPT 64 64 62 60 58 59 64 64 65 65 63 61 59 60 66 66 67 67 65 65 64 66
MIN/MAX RH 92 51 85 48 93
RH 58 71 87 90 90 90 66 53 51 64 81 81 84 84 60 50 48 63 79 87 90 90
WIND DIR S N N N N N S S S SW SW W W W SW SW SW W W W NW NW
WIND SPD 4 0 0 0 0 0 3 4 5 2 1 1 1 1 3 5 6 3 2 1 1 1
CLOUDS SC FW SC SC FW FW FW SC FW FW FW FW CL CL CL FW FW FW FW SC SC B1
CLOUDS(%) 35 14 29 31 19 23 20 29 21 8 20 10 2 1 5 16 16 10 17 30 31 56
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 10
RAIN SHWRS SC
MIX HGT 4 <1 <1 <1 <1 <1 2 5 4 <1 <1 <1 <1 <1 4 7 6 <1
T WIND DIR S S SW SW W W SW SW SW S SW SW SW NW W W W S
T WIND SPD 5 2 2 2 2 1 8 9 11 5 4 5 4 3 11 10 6 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 30 1 1 1 1 1 23 53 58 3 2 3 2 3 53 77 47 3
MAX LVORI 2 3 6 6 7 6 3 1 1 3 5 5 5 5 1 1 1 3
STABILITY B G G G G A B B B G G G G A B B B G
CEILING None None None None None None None None None
STA PRES 28.38 28.37 28.39 28.31 28.27 28.24 28.21 28.11
Date 09/11Sat 09/12/26Sun 09/13/26Mon 09/14/26Tue 09/15/26
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 87 65 83 66 86 66 87 65 86
TEMP 85 77 68 67 79 76 69 68 82 78 69 68 84 78 68 67 83 78
DEWPT 70 71 68 67 73 72 69 68 72 72 68 67 70 69 65 65 70 70
RH 61 82100100 82 87100100 72 82 97 97 63 74 90 93 65 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B2 B2 B2 B1 B1 B1 B1 SC SC FW SC FW FW FW B1
POP 12HR 70 50 80 40 40 10 30 10 30
RAIN SHWRS SC NM SC IS SC O SC SC SC SC
TSTMS SC IS SC IS SC 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