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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 AM EDT Sat Sep 5 2026
NCZ001-052000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
501 AM EDT Sat Sep 5 2026
Date Sat 09/05/26 Sun 09/06/26 Mon 09/07/26
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 79 62 72 58 66
TEMP 66 72 77 75 68 66 65 64 63 66 70 68 62 62 62 61 59 58 63 65 61
DEWPT 61 60 59 61 64 64 63 62 62 64 65 65 62 62 61 60 59 58 60 60 58
MAX/MIN RH 54 99 81 100 84
RH 84 66 54 62 87 93 93 93 97 93 84 90100100 97 97100100 90 84 90
WIND DIR NW NW NW NW NW NW N NW N NE SE E E E E E E SE SE SE SE
WIND SPD 11 10 9 9 8 9 6 6 5 4 4 5 6 13 16 17 14 11 9 8 8
CLOUDS FW SC SC B1 B2 B1 SC FW SC B1 B1 B2 B2 B2 B2 B2 B1 B2 B1 SC SC
CLOUDS(%) 13 31 38 56 70 51 28 25 26 56 57 83 82 78 74 76 65 76 65 43 35
VSBY 9 10 10 10 10 9 7 3 3 10 7 6 6 9 5 7 6 7 10 10 10
POP 12HR 30 20 80 70 10
RAIN SHWRS SC IS IS IS IS SC NM NM NM IS IS
TSTMS SC IS SC SC IS
MIX HGT <1 3 4 4 <1 <1 <1 <1 <1 3 3 2 <1 <1 <1 <1 1 2 3 3 1
T WIND DIR NW N NW NW NW NW NW NW SE S E N E E E E E E E E SE
T WIND SPD 8 18 13 17 12 9 10 1 1 2 3 2 4 11 10 10 11 11 8 6 4
DISPERSION PR PR PR PR PR FR GD GD PR
ADI 6 77 70 62 11 8 5 1 1 7 11 5 3 10 9 9 18 22 26 27 3
MAX LVORI 4 1 1 1 5 5 6 9 10 6 4 6 9 7 6 6 5 5 4 4 6
STABILITY C B B C D D F F A C C C E D D D D D C B E
CEILING None None None None None 400 500 500 500 None
STA PRES 26.71 26.67 26.67 26.65 26.67 26.67 26.73 26.77 26.83 26.85
Date Tue 09/08/26Wed 09/09/26Thu 09/10/26Fri 09/11/26
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 57 70 57 75 61 76 60 74
TEMP 60 57 67 64 60 58 73 67 63 62 73 68 63 60 70 65
DEWPT 57 57 60 58 56 56 60 60 59 58 62 61 60 59 59 58
RH 90100 78 81 87 93 64 78 87 87 68 78 90 96 68 78
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC FW FW SC SC FW FW SC SC SC SC B1
POP 12HR 5 5 0 5 0 20 20 30
RAIN SHWRS IS IS IS SC
TSTMS 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