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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Fri Sep 11 2026
NCZ001-112000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
331 AM EDT Fri Sep 11 2026
Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26
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 75 63 69 61 73
TEMP 62 64 69 74 73 68 66 64 64 63 65 66 67 64 64 64 63 62 65 69 72 66
DEWPT 60 60 61 61 61 61 62 62 62 63 65 65 66 64 64 63 63 62 65 65 65 63
MAX/MIN RH 63 98 93 100 79
RH 93 87 76 64 66 78 87 93 93100100 97 97100100 97100100100 87 79 90
WIND DIR W W W W W S SE SE S SW S S S SW W W NW W NW NW NW NW
WIND SPD 3 3 5 4 3 1 2 3 2 3 4 5 3 2 4 5 9 10 6 5 4 4
CLOUDS SC B1 SC SC B1 SC B1 B2 B2 B2 B2 OV B2 B2 B2 B2 B1 B1 B1 B1 B1 SC
CLOUDS(%) 42 57 41 50 57 46 66 72 71 80 79 92 82 85 80 70 62 52 52 53 53 28
VSBY 8 7 10 10 10 10 10 8 6 3 9 3 3 6 6 10 10 7 7 6 6 10
POP 12HR 20 10 90 40 30
RAIN SHWRS IS IS IS O NM SC SC SC SC SC SC
TSTMS IS IS IS SC SC IS SC IS
MIX HGT <1 <1 3 5 3 <1 <1 <1 <1 <1 2 2 2 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NW NW W SW N NE E E SE S S S S S S SW W W NW NW NW NW
T WIND SPD 3 3 8 5 4 2 4 5 5 8 8 10 11 8 4 5 5 5 11 11 8 4
DISPERSION VP VP VP VP VP VP VP PR PR VP
ADI 2 3 31 34 16 1 2 3 3 6 17 20 23 4 3 4 5 6 23 26 18 2
MAX LVORI 7 6 3 1 3 5 6 6 8 8 5 5 5 9 9 9 9 8 5 4 3 6
STABILITY F C B B C F F F F C D D C F E E D D D D D F
CEILING None None 1000 500 4400 500 500 500 None None
STA PRES 26.76 26.72 26.74 26.75 26.78 26.75 26.76 26.76 26.79 26.77
Date Mon 09/14/26Tue 09/15/26Wed 09/16/26Thu 09/17/26
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 61 74 60 72 59 75 60 75
TEMP 63 61 72 67 63 60 69 65 61 60 72 67 63 61 72 67
DEWPT 62 60 62 61 60 58 62 61 59 58 62 61 59 59 62 61
RH 97 97 71 81 90 93 78 87 93 93 71 81 87 93 71 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC SC SC SC SC FW SC SC FW SC B1
POP 12HR 0 5 5 20 0 20 5 30
RAIN SHWRS IS IS IS SC
TSTMS 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