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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri Sep 11 2026
VAZ012-120800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
401 PM EDT Fri Sep 11 2026
Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 61 80 62 82 59
TEMP 78 67 64 63 62 63 73 77 75 68 66 65 63 63 71 78 81 72 64 62 60 61
DEWPT 68 67 64 63 62 63 70 70 70 68 66 65 63 63 70 69 68 67 64 62 60 61
MIN/MAX RH 100 74 100 64 100
RH 71100100100100100 90 79 84100100100100100 97 74 65 84100100100100
WIND DIR W N N SE SE SE SE S S S S W W W NW NW NW NW W W W NW
WIND SPD 1 0 0 1 1 1 2 2 1 1 1 1 2 2 2 2 2 1 1 1 1 1
CLOUDS B1 SC SC B2 B2 B2 B2 OV B2 B2 B1 B1 SC SC B1 SC SC FW FW FW SC SC
CLOUDS(%) 60 37 43 77 81 80 81 91 80 72 67 64 45 41 55 33 30 13 18 13 29 38
VSBY 7 10 10 10 7 4 10 10 10 10 5 1 1 3 7 7 7 10 10 10 10
POP 12HR 10 90 50 20 0
RAIN SHWRS SC SC O NM SC IS IS IS IS IS
TSTMS SC IS SC SC IS IS IS
Obvis PF PF PF PF PF PF PF PF
MIX HGT 3 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR SE E E SE SE SE S S S S S S W NW NW NW NW NW
T WIND SPD 3 2 3 3 3 3 6 10 11 8 3 2 3 8 11 11 9 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 12 1 2 2 2 3 14 32 24 4 2 1 2 8 29 52 43 2
MAX LVORI 3 10 10 10 10 9 5 3 4 9 10 10 10 8 4 3 1 5
STABILITY C G F F F C C C C F F F F B C B B G
CEILING None 100 100 900 100 100 None None None
STA PRES 27.28 27.29 27.32 27.29 27.30 27.30 27.32 27.28
Date 09/14Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 82 54 81 53 84 57 86 62 84
TEMP 78 70 58 55 75 69 57 55 80 72 61 59 83 74 65 63 79 70
DEWPT 65 62 57 55 64 63 57 55 65 63 59 58 65 64 61 60 66 64
RH 64 76 96100 69 81100100 60 73 93 96 55 71 87 90 64 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW SC SC FW FW FW FW FW FW FW SC SC SC SC B1
POP 12HR 5 0 5 0 10 5 20 20 50
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