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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 PM EDT Wed Sep 2 2026
VAZ018-030800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
901 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 70 95 71 93 70
TEMP 77 74 73 73 85 91 93 85 76 73 72 74 84 90 91 83 75 72 70 71
DEWPT 67 67 65 66 68 66 65 69 67 67 66 67 68 66 67 67 68 67 67 68
MIN/MAX RH 83 40 84 45 92
RH 71 79 76 79 57 44 40 59 74 81 81 79 59 45 45 59 79 84 90 90
WIND DIR W W W W NW NW NW NW W W W W W W NW NW NW W NW NW
WIND SPD 1 1 1 2 1 3 3 1 2 2 3 3 4 5 5 3 3 3 3 3
WIND GUST 16
CLOUDS FW CL FW FW CL FW FW SC SC FW FW FW FW SC SC SC SC SC SC SC
CLOUDS(%) 12 4 16 16 3 11 20 26 36 20 7 11 11 33 33 35 35 32 27 30
VSBY 10 8 5 4 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 5 20 20 20
RAIN SHWRS IS IS IS IS
TSTMS IS IS IS IS
MIX HGT <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 4 6 6 <1
T WIND DIR W W W W NW W W W W W W W NW W W NW
T WIND SPD 2 3 3 3 12 6 5 2 3 4 4 5 20 19 19 14
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 2 2 3 71 54 44 1 2 2 2 6108148134 7
MAX LVORI 3 4 4 4 1 1 1 3 3 5 5 5 1 1 1 3
STABILITY G G G A A A A G G G G A A A A G
CEILING None None None None None None None None
STA PRES 27.86 27.89 27.83 27.83 27.82 27.83 27.77
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 90 66 80 62 78 62 84 64 87
TEMP 89 75 67 66 78 70 64 62 76 70 64 64 82 74 66 66 85 76
DEWPT 69 66 65 63 67 62 60 60 66 62 59 60 65 62 60 60 66 63
RH 52 74 93 90 69 76 87 93 71 76 84 87 56 66 81 81 53 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 SC B1 B1 SC B1 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR 30 30 30 20 20 10 10 5 10
RAIN SHWRS SC SC SC SC IS IS
TSTMS SC 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
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