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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sat Sep 12 2026
VAZ012-130800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 PM EDT Sat Sep 12 2026
Date 09/12/26 Sun 09/13/26 Mon 09/14/26 Tue
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 62 83 60 81 52
TEMP 69 67 66 65 63 72 78 80 70 64 62 61 62 70 76 79 69 58 56 55 54
DEWPT 69 66 65 63 63 69 68 67 67 64 62 61 62 65 63 60 59 55 54 53 52
MIN/MAX RH 100 63 100 53 97
RH 100 97 97 93100 90 71 65 90100100100100 84 64 52 70 90 93 93 93
WIND DIR S SW W W W NW NW NW NW NW W W NW NW NW N N NE SE SE SE
WIND SPD 1 1 1 2 2 2 2 2 2 1 1 2 2 2 2 2 1 1 1 2 2
CLOUDS B2 B2 B2 B1 B1 B1 SC SC FW FW SC FW B1 B1 SC FW FW FW SC B1 SC
CLOUDS(%) 76 81 80 65 57 68 35 31 9 19 32 21 64 62 42 18 12 17 28 51 40
VSBY 10 7 4 4 3 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 10 0 5 0
RAIN SHWRS NM SC
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR S SW SW W W NW W NW NW NW W W NW NW N N N
T WIND SPD 5 3 4 9 9 10 10 13 11 4 5 6 14 13 14 11 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 2 4 7 27 45 55 5 2 3 3 16 41 72 53 2
MAX LVORI 9 10 9 9 8 4 3 1 6 9 9 9 5 4 1 1 3
STABILITY F F F F C C B B G G G G C C B B G
CEILING 100 100 None None None None None None None
STA PRES 27.25 27.26 27.29 27.26 27.30 27.31 27.37 27.38
Date 09/15Wed 09/16/26Thu 09/17/26Fri 09/18/26Sat 09/19/26
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 83 53 86 55 87 58 86 59 82
TEMP 77 69 57 55 82 72 59 58 81 72 62 60 81 72 63 60 76 69
DEWPT 61 61 54 53 63 61 56 55 60 60 56 57 65 64 60 59 64 62
RH 58 76 90 93 53 68 90 90 49 66 81 90 58 76 90 96 66 78
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW FW CL FW FW FW FW SC B1 SC SC B1 B1
POP 12HR 0 0 0 0 5 5 40 20 40
RAIN SHWRS SC IS SC 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