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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Wed Sep 2 2026
VAZ024-030800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 PM EDT Wed Sep 2 2026
Date 09/02/26 Thu 09/03/26 Fri 09/04/26 Sat
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 71 99 72 97 71
TEMP 94 85 79 76 74 75 88 95 97 88 77 74 72 75 87 94 96 86 76 73 71 72
DEWPT 70 70 70 70 68 69 70 68 68 71 70 69 69 69 69 66 67 68 69 69 69 69
MIN/MAX RH 90 38 89 39 95
RH 46 61 74 82 82 82 55 42 39 57 79 84 90 82 55 40 39 55 79 87 93 90
WIND DIR SW SE N N N N N W W SW W N N W W W NW NW NW N NW NW
WIND SPD 5 1 0 0 0 0 0 2 2 1 1 0 0 1 2 4 5 2 1 0 1 1
CLOUDS FW SC FW CL CL CL FW FW SC FW SC SC CL FW FW SC SC SC SC SC FW SC
CLOUDS(%) 20 41 12 5 5 4 6 15 33 25 47 26 0 16 13 40 40 33 39 30 21 28
VSBY 10 10 9 6 5 9 8 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 10 20 20 20
RAIN SHWRS IS IS IS IS IS
TSTMS IS IS IS IS
MIX HGT 5 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 4 7 5 <1
T WIND DIR SW S S W NW NW NW W W W W NW NW W W W W NW
T WIND SPD 4 3 2 2 3 2 12 6 6 1 2 3 3 3 19 18 20 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 28 2 1 1 2 2 54 54 36 1 1 2 2 3 91157134 4
MAX LVORI 2 3 3 5 5 5 1 1 1 3 4 5 7 6 1 1 1 3
STABILITY A F G G G A A A A G F G G A A A A G
CEILING None None None None None None None None None None
STA PRES 28.55 28.56 28.55 28.57 28.50 28.50 28.51 28.51 28.43
Date 09/05Sun 09/06/26Mon 09/07/26Tue 09/08/26Wed 09/09/26
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 93 64 81 60 81 61 86 62 91
TEMP 91 79 67 65 79 73 63 61 78 73 63 62 84 77 66 64 89 80
DEWPT 70 70 66 64 66 64 62 61 65 63 61 61 65 64 62 62 66 65
RH 50 74 97 97 64 73 97100 64 71 93 97 53 64 87 93 47 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B2 B1 B1 SC B1 SC B1 SC B1 SC SC SC SC SC SC FW SC
POP 12HR 60 40 30 20 10 10 5 5 10
RAIN SHWRS NM SC IS IS SC IS
TSTMS SC 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