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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Mon Sep 7 2026
VAZ012-072000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
431 AM EDT Mon Sep 7 2026
Date Mon 09/07/26 Tue 09/08/26 Wed 09/09/26
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 76 53 79 54 84
TEMP 59 58 66 73 73 67 60 58 55 55 69 77 77 68 61 57 54 57 74 81 84 74
DEWPT 59 58 61 61 59 58 58 56 54 55 58 57 57 60 58 55 53 54 63 63 63 63
MAX/MIN RH 59 100 47 96 49
RH 100100 84 66 62 73 93 93 96100 68 50 50 76 90 93 96 90 69 54 49 69
WIND DIR E E SE SE SE SE E SE SE SE SE S S S S S S SW SW SW SW S
WIND SPD 3 3 3 3 3 2 1 1 1 1 2 2 2 2 1 1 1 1 1 1 2 2
CLOUDS SC SC B1 SC SC SC SC FW SC SC SC B1 SC SC FW FW FW FW FW SC FW CL
CLOUDS(%) 42 48 56 45 44 48 30 7 35 36 47 53 43 32 24 24 23 19 21 32 18 5
VSBY 9 9 10 10 10 10 10 10 10 9 10 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 20 0 0 0 0
MIX HGT <1 <1 2 4 4 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR E SE SE SE SE SE SE SE SE SE S S S S S S SW SW W W SW S
T WIND SPD 9 13 18 14 10 8 5 9 5 4 8 4 6 8 4 3 2 2 6 6 9 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 4 13 58 76 49 4 3 4 3 4 30 24 39 4 2 2 1 2 35 50 60 3
MAX LVORI 9 5 4 1 1 5 6 6 8 9 3 2 1 4 6 7 8 6 3 1 1 3
STABILITY F A B A A F G G G A A B A G G G G A A A A G
CEILING None None None None None None None None None None
STA PRES 27.38 27.38 27.45 27.48 27.53 27.50 27.52 27.52 27.51 27.43
Date Thu 09/10/26Fri 09/11/26Sat 09/12/26Sun 09/13/26
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 60 83 59 82 58 83 58 85
TEMP 62 62 83 72 63 60 77 70 61 60 78 70 63 60 80 71
DEWPT 60 60 67 66 63 60 65 63 60 60 67 65 62 60 65 64
RH 93 93 59 81100100 67 78 97100 69 84 97100 60 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC B1 B1 B1 B1 B1 SC SC B1 B1 SC SC SC SC
POP 12HR 0 50 40 40 10 50 10 20
RAIN SHWRS SC SC IS IS SC SC SC IS
TSTMS SC IS IS 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