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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 PM EDT Sat Aug 15 2026
VAZ012-160800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
601 PM EDT Sat Aug 15 2026
Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue
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 88 68 87 65
TEMP 74 70 68 68 68 78 83 86 79 72 71 69 69 79 85 81 74 69 67 66 65
DEWPT 68 69 68 67 68 71 70 70 69 68 67 66 67 70 69 69 69 67 66 65 65
MIN/MAX RH 100 58 93 59 100
RH 82 97100 97100 79 65 59 72 87 87 90 93 74 59 67 84 93 97 97100
WIND DIR NW W W W W W W W W W W W W W W W W W W NW NW
WIND SPD 2 3 3 3 2 3 3 3 2 3 4 3 3 3 4 3 2 1 1 1 1
CLOUDS B1 SC SC SC SC SC SC SC FW FW SC B1 B1 SC B2 B2 B1 B1 B1 B1 B1
CLOUDS(%) 56 46 37 46 34 44 31 30 16 25 35 57 66 44 76 76 59 65 53 60 57
VSBY 10 8 6 4 3 10 10 10 10 10 8 10 10 10 10 10 9 10 10 10
POP 12HR 30 20 20 60 40
RAIN SHWRS SC IS IS IS NM NM SC SC
TSTMS SC IS IS SC SC IS
Obvis PF PF PF
MIX HGT <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR W W SW SW SW W W W SW W W W NW NW NW W W
T WIND SPD 2 2 2 2 3 8 14 17 9 5 8 9 12 16 17 11 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 1 4 31 92 85 4 3 4 4 15 68 69 49 3
MAX LVORI 5 8 8 8 9 3 1 1 3 6 6 5 5 3 1 1 5
STABILITY G G G F B A A A G G F F B A C B F
CEILING None None None None None None None 2500 6000
STA PRES 27.40 27.38 27.36 27.27 27.25 27.24 27.26 27.22
Date 08/18Wed 08/19/26Thu 08/20/26Fri 08/21/26Sat 08/22/26
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 84 59 86 63 83 60 81 59 79
TEMP 80 74 62 63 82 76 66 66 79 73 63 62 76 71 62 61 75 70
DEWPT 65 64 60 60 63 63 61 63 66 65 62 61 63 62 60 60 63 62
RH 60 71 93 90 53 64 84 90 64 76 97 97 64 73 93 97 66 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW FW B1 B1 B1 B1 B1 B1 B1 B1 SC B1 B1
POP 12HR 10 0 5 30 40 40 40 40 30
RAIN SHWRS SC SC SC SC SC SC SC SC IS IS SC
TSTMS IS SC IS SC IS 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