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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Aug 26 2026
VAZ024-262000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 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 88 66 91 65 88
TEMP 79 86 86 76 71 69 67 68 84 90 86 75 70 68 66 68 81 87 83 73
DEWPT 60 63 63 65 65 65 65 66 69 68 68 69 68 67 66 67 69 68 68 69
MAX/MIN RH 43 95 49 100 53
RH 52 46 46 69 81 87 93 93 61 49 55 82 93 97100 97 67 53 61 87
WIND DIR N S S S SW N N N S S S S N N N NW N SW SW N
WIND SPD 0 5 5 3 1 0 0 0 1 3 3 1 0 0 0 1 0 2 2 1
CLOUDS FW B1 B1 B1 B1 SC SC SC B1 B1 B2 B2 B1 B1 SC B1 B1 B2 B2 B2
CLOUDS(%) 20 63 58 63 56 40 48 43 61 59 72 80 67 59 49 53 69 81 79 76
VSBY 10 10 10 10 9 8 8 9 10 7 7 7 7 7 7 10 10 10 10 10
POP 12HR 0 10 50 40 60
RAIN SHWRS IS SC SC SC SC NM NM IS
TSTMS SC SC SC IS SC SC IS
MIX HGT 3 6 5 <1 <1 <1 <1 <1 3 6 4 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR S S S S SE SE SE S S SW S S S SW W NW NW NW W N
T WIND SPD 9 12 11 8 3 2 3 6 4 9 10 6 2 2 2 4 4 2 3 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 35 56 46 4 2 1 2 7 17 61 44 3 1 1 1 5 17 16 13 1
MAX LVORI 1 1 1 3 5 6 7 6 2 1 1 5 8 10 10 9 3 2 2 6
STABILITY A C C F F G F A B B B F F F F B B A B F
CEILING None 4200 None None None 2700 2800 None 300 10900
STA PRES 28.61 28.54 28.53 28.52 28.52 28.47 28.48 28.51 28.57 28.54
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 65 86 65 89 67 94 69 95
TEMP 67 67 85 75 68 68 87 79 70 69 92 83 72 71 93 84
DEWPT 67 66 68 68 67 67 68 68 68 68 67 68 68 68 68 69
RH 100 97 57 79 97 97 53 69 93 97 44 61 87 90 44 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B1 B1 B1 SC SC SC SC FW FW FW SC FW FW SC
POP 12HR 20 20 10 10 0 5 5 10
RAIN SHWRS IS IS IS
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