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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Aug 26 2026
VAZ012-270800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 PM EDT Wed Aug 26 2026
Date 08/26/26 Thu 08/27/26 Fri 08/28/26 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 60 86 60 84 59
TEMP 62 61 60 62 76 82 80 70 64 63 61 62 75 82 79 69 63 61 60 61
DEWPT 62 61 60 62 66 65 66 66 64 63 61 62 66 64 64 64 63 61 60 61
MIN/MAX RH 100 54 100 55 100
RH 100100100100 71 56 62 87100100100100 74 55 60 84100100100100
WIND DIR S S SW SW W W W S N N N NW NW NW NW N N N N NE
WIND SPD 1 1 1 1 2 2 2 1 0 0 0 1 1 1 1 1 1 0 0 1
CLOUDS SC SC SC SC SC B1 B1 SC B1 B2 B1 B1 SC B1 B1 SC SC SC SC SC
CLOUDS(%) 44 29 43 43 31 54 53 47 68 75 52 67 47 55 51 41 36 29 32 37
VSBY 10 9 7 9 10 10 10 10 10 2 2 1 10 10 10 10
POP 12HR 20 40 40 30 0
RAIN SHWRS SC SC IS IS SC SC
TSTMS SC SC IS SC SC
Obvis PF PF
MIX HGT <1 <1 <1 <1 4 6 3 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR S SW SW SW W W SW SE SW W W W NW NW NW N
T WIND SPD 4 2 2 2 10 6 4 3 2 3 3 2 4 8 8 9
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 1 2 50 44 17 2 1 2 2 2 21 48 44 4
MAX LVORI 9 10 10 9 3 1 2 6 10 10 10 9 3 1 1 5
STABILITY F G F A A B B F F F F B A B B F
CEILING None None None 3300 3700 3200 None None None
STA PRES 27.29 27.28 27.29 27.25 27.27 27.30 27.35 27.31
Date 08/29Sun 08/30/26Mon 08/31/26Tue 09/01/26Wed 09/02/26
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 85 60 87 61 89 64 90 65 90
TEMP 83 71 61 62 82 75 63 63 83 77 67 65 84 77 68 66 84 77
DEWPT 64 65 61 62 64 64 62 62 64 64 63 63 65 65 64 64 66 66
RH 53 81100100 55 69 97 97 53 64 87 93 53 67 87 93 55 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC SC FW FW FW FW SC FW FW FW SC FW FW SC B1
POP 12HR 20 0 5 0 5 0 10 10 30
RAIN SHWRS IS 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