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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Sat Aug 22 2026
VAZ018-222000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM EDT Sat Aug 22 2026
Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26
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 83 62 80 57 80
TEMP 81 80 70 66 65 64 63 71 78 76 66 62 59 58 59 73 79 76 65
DEWPT 67 66 65 63 62 61 61 61 57 55 54 54 54 54 54 56 54 53 52
MAX/MIN RH 60 93 46 87 42
RH 63 62 84 90 90 90 93 71 48 48 65 75 83 86 83 55 42 45 63
WIND DIR S SW W W W W NW NW NW NW W W W W W W W NW NW
WIND SPD 2 3 3 4 5 6 6 6 6 6 4 2 3 3 3 6 6 6 4
WIND GUST 17 20 24 25 21 19 19 14 18 17 17 14
CLOUDS SC B1 B1 SC SC FW SC FW FW FW FW FW CL CL CL FW FW FW FW
CLOUDS(%) 38 53 54 43 31 18 27 20 7 11 15 12 1 3 3 7 10 8 16
VSBY 10 10 9 8 9 6 0 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 20 0 0 0
RAIN SHWRS SC NM IS IS
TSTMS IS IS IS IS
MIX HGT 4 4 <1 <1 <1 <1 1 4 6 6 <1 <1 <1 <1 <1 4 5 6 1
T WIND DIR W W S SE SW W NW NW NW W W NW W W W W W W NW
T WIND SPD 2 3 8 3 5 12 13 23 17 17 17 11 3 3 5 19 13 10 8
DISPERSION VP VP PR PR VP VP VP VP VP
ADI 13 17 4 2 3 6 22 99110113 8 5 2 2 6102 84 67 4
MAX LVORI 2 2 5 6 6 6 4 3 1 1 3 4 5 6 5 1 1 1 3
STABILITY A B F E F F B B B B F G G G A B B B F
CEILING None None None None None None None None None
STA PRES 27.74 27.72 27.71 27.79 27.78 27.82 27.83 27.85 27.84
Date Tue 08/25/26Wed 08/26/26Thu 08/27/26Fri 08/28/26
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 55 83 60 86 65 84 65 85
TEMP 56 57 82 69 61 62 85 72 67 67 83 70 67 66 84 72
DEWPT 51 51 54 55 54 55 63 62 62 63 69 66 64 64 68 65
RH 83 80 38 61 78 78 48 71 84 87 63 87 90 93 59 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW SC SC B1 B1 B1 B2 B1 SC SC B1
POP 12HR 0 0 0 20 30 60 30 30
RAIN SHWRS IS SC IS SC NM SC SC
TSTMS IS IS 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