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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1101 PM EDT Sun Aug 16 2026
VAZ012-170800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
1101 PM EDT Sun Aug 16 2026
Date 08/16/26 Mon 08/17/26 Tue 08/18/26 Wed
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 66 84 65 82 60
TEMP 71 68 68 76 81 81 73 69 68 66 66 74 79 81 72 65 62 60 63
DEWPT 66 65 67 70 69 69 68 67 66 65 66 67 65 65 63 62 60 58 61
MIN/MAX RH 98 63 100 57 100
RH 84 90 97 82 67 67 84 93 93 97100 79 62 58 73 90 93 93 93
WIND DIR W W W NW W W W W W W W NW NW NW NW N N N N
WIND SPD 4 3 3 3 3 3 2 2 2 1 1 2 2 2 1 0 0 0 0
CLOUDS SC B1 SC B1 B1 B1 B2 OV B1 B1 B1 SC SC FW FW FW FW FW FW
CLOUDS(%) 46 64 46 51 63 67 85 90 56 55 54 44 34 22 7 16 8 12 23
VSBY 9 8 8 10 10 10 6 8 8 4 10 10 10 10 10 10 10 10
POP 12HR 40 50 50 5 0
RAIN SHWRS IS IS SC SC SC
TSTMS IS SC IS
MIX HGT <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR SW W W NW NW NW NW NW W NW NW NW NW NW NW
T WIND SPD 4 5 11 16 16 13 6 6 4 6 9 11 8 10 11
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 3 14 57 78 62 3 3 2 3 12 46 46 64 5
MAX LVORI 5 6 5 3 1 1 5 6 6 8 5 3 1 1 3
STABILITY E F A A B B F F F F B A A A G
CEILING None None 4000 0 None None None None
STA PRES 27.26 27.28 27.25 27.27 27.26 27.28 27.25
Date 08/19Thu 08/20/26Fri 08/21/26Sat 08/22/26Sun 08/23/26
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 87 63 85 61 80 59 79 58 80
TEMP 83 77 67 66 80 74 65 62 76 71 62 62 74 70 61 61 76 71
DEWPT 62 63 60 62 66 66 63 62 65 64 61 62 64 63 60 60 62 60
RH 49 62 78 87 62 76 93100 69 79 97100 71 78 97 97 62 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC B1 B1 B1 B2 B2 B1 B1 B2 B1 SC SC B1 SC
POP 12HR 0 5 40 30 60 50 40 10 20
RAIN SHWRS IS SC SC SC SC NM SC SC SC SC IS IS
TSTMS SC IS IS SC 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