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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sun Aug 30 2026
VAZ012-310800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 AM EDT Sun Aug 30 2026
Date 08/29/26 Sun 08/30/26 Mon 08/31/26 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 60 86 62 89 64
TEMP 62 63 76 82 83 73 68 65 63 65 79 85 86 75 70 67 64 66
DEWPT 62 63 67 65 65 65 64 63 61 62 66 65 65 64 64 62 61 62
MIN/MAX RH 100 51 94 46 89
RH 100100 74 56 55 76 87 93 93 90 64 51 50 69 81 84 90 87
WIND DIR SE E S SW SW N N N W W NW NW NW N N N W W
WIND SPD 1 1 1 1 1 0 0 0 1 1 1 1 1 0 0 0 1 1
CLOUDS SC SC FW SC SC SC FW FW FW FW FW SC SC FW FW FW CL FW
CLOUDS(%) 40 36 15 32 45 33 14 23 20 21 25 43 35 19 20 16 5 13
VSBY 2 1 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 0 5 0
Obvis PF PF
MIX HGT <1 <1 2 5 4 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR S S S W W S S SW W W NW NW NW NW
T WIND SPD 4 5 3 3 2 4 4 3 4 5 12 11 11 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 6 11 23 13 2 2 2 2 6 68 84 71 2
MAX LVORI 9 9 3 2 2 3 6 7 6 6 1 1 1 3
STABILITY F A A A A G G G G A A A A G
CEILING None None None None None None None None
STA PRES 27.45 27.46 27.41 27.41 27.41 27.43 27.40
Date 09/01Wed 09/02/26Thu 09/03/26Fri 09/04/26Sat 09/05/26
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 89 65 90 68 92 65 89 63 86
TEMP 86 78 69 68 87 80 70 69 87 77 69 67 83 76 66 64 81 73
DEWPT 65 65 63 63 65 66 64 64 67 67 65 65 67 66 64 63 65 63
RH 50 64 81 84 48 62 81 84 52 71 87 93 59 71 93 97 58 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC FW FW B1 SC FW SC B1 SC SC SC B1
POP 12HR 0 0 10 0 40 20 40 20 30
RAIN SHWRS SC IS IS SC IS IS SC
TSTMS SC IS 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