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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Thu Aug 27 2026
VAZ012-272000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 AM EDT Thu Aug 27 2026
Date Thu 08/27/26 Fri 08/28/26 Sat 08/29/26
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 82 61 82 60 84
TEMP 74 79 81 73 68 65 63 64 73 78 80 69 63 61 60 61 76 82 80 70
DEWPT 65 64 65 65 64 63 61 63 65 64 64 63 62 60 58 60 65 63 64 64
MAX/MIN RH 59 100 58 98 53
RH 74 60 58 76 87 93 93 97 76 62 58 81 97 97 93 97 69 53 58 81
WIND DIR W W SW S N N N N N N N N N N N NE E E SE SE
WIND SPD 4 1 1 1 0 0 0 1 1 1 1 1 0 0 0 1 1 1 1 1
CLOUDS B2 B1 B1 SC SC B1 SC SC SC B1 B1 B1 SC SC SC SC SC SC SC SC
CLOUDS(%) 72 54 63 44 43 61 40 49 44 57 56 63 50 35 29 50 42 29 36 26
VSBY 10 10 10 10 5 3 3 5 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 30 5 10
RAIN SHWRS IS SC IS SC SC
TSTMS IS SC IS SC SC
Obvis PF PF PF PF
MIX HGT 3 5 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR W W S S S S W W N N N NW NW NW NW N E S SE SE
T WIND SPD 6 3 4 5 2 2 1 2 5 5 5 2 2 2 2 1 4 1 2 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 30 21 17 3 1 1 1 2 20 33 24 1 1 1 1 1 17 7 12 4
MAX LVORI 3 2 2 4 6 7 8 8 3 1 2 5 7 7 7 8 3 2 2 4
STABILITY A B B F F F G A A B B F F G G A A A A G
CEILING 6600 2000 None None None 2200 None None None None
STA PRES 27.29 27.25 27.27 27.26 27.30 27.29 27.33 27.37 27.42 27.39
Date Sun 08/30/26Mon 08/31/26Tue 09/01/26Wed 09/02/26
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 61 87 63 89 64 90 65 89
TEMP 63 63 82 75 65 64 84 77 67 65 85 77 68 66 84 76
DEWPT 62 62 62 63 62 61 64 64 62 62 65 66 64 64 67 67
RH 97 97 51 66 90 90 51 64 84 90 51 69 87 93 57 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW FW FW FW FW FW FW SC SC FW FW B1
POP 12HR 0 10 0 10 0 10 10 40
RAIN SHWRS SC
TSTMS SC
$$
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