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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 AM EDT Wed Aug 26 2026
VAZ012-262000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
1001 AM EDT Wed Aug 26 2026
Date Wed 08/26/26 Thu 08/27/26 Fri 08/28/26
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 79 61 86 61 83
TEMP 71 78 77 70 66 64 62 63 76 82 80 70 65 63 61 63 75 81 77 68
DEWPT 59 59 60 61 63 61 60 61 65 64 65 65 64 62 61 62 66 65 65 64
MAX/MIN RH 52 94 51 100 58
RH 66 52 56 73 90 90 93 93 69 55 60 84 97 97100 97 74 58 67 87
WIND DIR S SW SW S S S SW SW W SW SW SW N N W W NW NW NW N
WIND SPD 5 6 6 1 1 1 1 1 1 2 1 1 0 0 1 1 1 1 1 0
CLOUDS SC B2 B1 B1 B2 SC SC B1 SC B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B1
CLOUDS(%) 38 78 67 64 77 40 37 57 44 61 63 58 69 57 57 63 75 72 72 56
VSBY 10 10 10 10 10 9 4 6 10 7 7 7 7 7 7 10 10 10 10 10
POP 12HR 20 5 50 30 60
RAIN SHWRS IS SC SC SC SC IS IS IS IS NM NM
TSTMS IS SC SC IS SC SC
Obvis PF PF
MIX HGT 4 6 3 <1 <1 <1 <1 <1 3 6 3 <1 <1 <1 <1 <1 3 4 3 <1
T WIND DIR SW SW S S S SW S SW W W S SW S SW W W NW NW NW N
T WIND SPD 11 11 8 4 5 3 3 2 8 5 10 4 2 2 3 2 3 5 5 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 52 73 34 2 3 2 2 2 36 36 41 2 1 1 2 2 12 27 21 4
MAX LVORI 1 1 1 4 6 7 7 6 3 1 1 5 8 8 10 9 3 2 3 5
STABILITY A B B F F G G B A B B F F F F B B B B F
CEILING 2000 None None None 2500 400 100 200 2200
STA PRES 27.30 27.29 27.27 27.28 27.24 27.26 27.28 27.34 27.33
Date Sat 08/29/26Sun 08/30/26Mon 08/31/26Tue 09/01/26
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 60 83 61 86 62 88 64 89
TEMP 62 62 81 70 63 63 81 74 65 64 83 76 66 65 84 77
DEWPT 61 61 64 64 63 63 63 64 63 63 64 65 63 63 65 66
RH 97 97 56 81100100 54 71 93 97 53 69 90 93 53 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 SC SC B1 SC SC FW FW SC FW FW FW SC
POP 12HR 10 30 0 10 0 10 5 20
RAIN SHWRS 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