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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Sep 12 2026
NCZ005-122000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
801 AM EDT Sat Sep 12 2026
Date Sat 09/12/26 Sun 09/13/26 Mon 09/14/26
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 84 70 89 66 88
TEMP 77 83 81 75 72 71 71 72 80 87 88 80 75 70 68 68 83 87 85 77
DEWPT 72 72 72 72 71 71 71 71 71 70 69 70 69 69 68 67 69 67 67 66
MAX/MIN RH 69 99 54 100 51
RH 85 70 74 90 97100100 97 74 57 54 72 82 97100 97 63 52 55 69
WIND DIR E S S SW S SW SW SW W W W W NW W NW NW N N N NE
WIND SPD 2 3 4 2 2 3 3 4 4 4 4 3 3 2 2 3 6 6 6 5
CLOUDS B2 B1 B2 B2 B2 B1 B1 SC CL SC SC SC FW FW FW FW FW SC SC SC
CLOUDS(%) 72 67 85 74 82 61 57 42 5 31 33 42 19 18 16 8 18 34 32 28
VSBY 7 7 4 4 6 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 90 50 5 0 5
RAIN SHWRS IS IS SC SC SC IS
TSTMS IS IS SC SC IS
MIX HGT 2 3 3 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR SE SE S S S SW SW SW W W W NW NW NW W W N N N N
T WIND SPD 6 9 11 10 5 5 8 6 4 10 10 9 9 4 3 2 12 11 11 5
DISPERSION VP VP VP VP VP VP VP VP PR
ADI 18 32 27 5 3 3 4 7 16 62 63 4 4 2 2 2 58 73 62 3
MAX LVORI 4 3 3 6 8 9 9 6 3 1 1 3 5 9 10 8 1 1 1 3
STABILITY C C D F F F F B B B B F G G G B B B B F
CEILING 400 2300 1900 None None None None None None None
STA PRES 29.27 29.23 29.24 29.23 29.24 29.18 29.24 29.26 29.32 29.33
Date Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
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 83 58 87 60 90 64 90
TEMP 66 62 80 75 62 60 84 77 64 62 88 80 67 66 88 80
DEWPT 60 57 60 60 58 59 63 62 59 60 63 63 62 62 64 64
RH 81 84 51 60 87 96 49 60 84 93 43 56 84 87 45 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW CL FW FW FW CL SC SC FW FW SC
POP 12HR 0 0 0 0 0 5 10 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