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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Tue Sep 15 2026
NCZ003-152000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
801 AM EDT Tue Sep 15 2026
Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26
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 60 86 62 89
TEMP 69 77 81 74 67 63 61 61 74 82 85 77 69 65 63 64 78 86 88 79
DEWPT 56 60 63 63 61 60 58 58 61 64 64 64 62 60 59 59 61 62 63 63
MAX/MIN RH 53 92 49 88 42
RH 63 56 54 69 81 90 90 90 64 55 50 64 78 84 87 84 56 45 43 58
WIND DIR E E E E E E NE E S SE SE E SE W NW NW S S S S
WIND SPD 4 3 2 1 3 1 1 2 2 3 3 1 1 1 1 2 2 3 2 1
CLOUDS B1 B2 SC SC SC SC SC CL FW FW FW SC FW FW FW CL CL FW FW SC
CLOUDS(%) 69 73 40 33 30 43 33 3 6 16 6 28 9 8 13 4 5 8 13 26
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 1 0 10 10 10 10
POP 12HR 0 0 0 0 5
MIX HGT 2 3 4 <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR E E E E N N NW NW SW SW E SE S SW SW S SW S S SW
T WIND SPD 10 4 3 3 1 2 1 1 3 1 1 2 8 6 3 2 3 4 4 5
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 15 12 10 3 2 0 1 1 8 11 12 1
MAX LVORI 2 2 2 3 4 6 5 6 3 2 2 3
STABILITY D C B G G G G B B B B G
CEILING 1800 None None None None None None None None None
STA PRES 29.28 29.25 29.27 29.28 29.31 29.26
Date Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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 66 91 67 85 67 88 66 85
TEMP 68 67 89 80 70 67 81 78 69 68 84 79 70 67 81 75
DEWPT 61 61 66 69 67 65 67 67 66 66 68 69 67 67 68 68
RH 78 81 47 69 90 93 63 69 90 93 59 72 90100 65 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW B1 B1 SC SC SC SC SC SC SC B1 SC SC B1
POP 12HR 0 40 40 20 10 20 20 50
RAIN SHWRS SC SC IS IS IS IS SC
TSTMS SC IS IS 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