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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Fri Sep 11 2026
NCZ003-112000-
RAWS 310302
36.35N 80.48W Elev. 1076 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 89 69 83 68 87
TEMP 69 71 81 87 87 79 73 71 70 70 76 82 80 74 71 70 69 69 76 83 85 78
DEWPT 66 67 68 68 68 70 70 70 69 69 71 72 73 72 71 70 69 69 72 71 71 71
MAX/MIN RH 51 100 71 100 62
RH 90 87 65 53 53 74 90 97 97 97 85 72 79 93100100100100 87 67 63 79
WIND DIR N N SW SW E NE E NE NE NE SE S S S SW SW W W NW W W W
WIND SPD 0 0 1 2 3 3 3 3 2 4 3 4 3 2 2 3 3 3 3 3 2 1
CLOUDS B1 SC SC SC SC SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 SC SC SC SC
CLOUDS(%) 55 38 37 35 41 50 60 72 82 75 80 76 82 75 75 69 72 55 29 50 50 28
VSBY 9 10 10 10 10 10 10 9 8 7 9 3 3 3 3 10 10 10 10 7 7 10
POP 12HR 10 10 80 60 30
RAIN SHWRS IS SC NM NM NM NM SC SC
TSTMS SC SC IS SC IS
MIX HGT <1 <1 3 7 6 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR W NW NW W SE NE E E E E E E S N N S SW SW W W W W
T WIND SPD 1 1 3 2 2 13 8 8 6 5 3 3 5 2 0 4 5 5 6 6 5 2
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 13 17 15 6 4 4 3 6 8 8 16 1 0 2 3 4 21 35 17 1
MAX LVORI 7 5 3 2 2 3 6 8 9 8 4 3 3 7 10 9 9 9 4 3 2 4
STABILITY F A A B B F F F F D C D C F F F F C B B B G
CEILING None None 1600 500 500 1000 2000 800 None None
STA PRES 28.95 28.91 28.95 28.97 29.01 28.97 28.97 28.97 28.98 28.94
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 67 87 65 83 64 87 65 88
TEMP 69 68 84 78 68 66 80 76 66 65 84 78 68 66 85 78
DEWPT 68 66 68 68 64 62 66 66 63 63 67 67 65 64 67 67
RH 97 93 59 71 87 87 62 71 90 93 57 69 90 93 55 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC SC FW CL FW FW FW FW FW SC
POP 12HR 5 0 0 5 0 5 5 20
RAIN SHWRS IS
TSTMS 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