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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Sat Aug 15 2026
VAZ024-160800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 AM EDT Sat Aug 15 2026
Date 08/14/26 Sat 08/15/26 Sun 08/16/26 Mon
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 70 88 70 91 72
TEMP 71 72 83 88 85 77 74 72 71 71 81 89 89 81 76 74 72 74
DEWPT 70 71 73 73 74 74 73 72 71 71 74 74 75 74 73 71 70 71
MIN/MAX RH 100 61 100 59 95
RH 97 97 72 61 70 90 97100100100 79 61 64 79 90 90 93 90
WIND DIR N N N E E SE N N N SE SW SW SW SW W W W W
WIND SPD 0 0 0 2 2 1 0 0 0 1 3 5 4 3 2 2 2 3
WIND GUST 14 12 12
CLOUDS B1 SC B1 B1 B1 B1 B1 B2 B1 B1 B2 B2 B1 FW SC SC SC SC
CLOUDS(%) 54 50 58 61 69 56 63 72 64 67 76 76 61 16 32 34 33 31
VSBY 3 4 10 10 10 10 6 5 4 5 7 5 10 3 10 9 10 10
POP 12HR 40 50 50 50 10
RAIN SHWRS IS SC SC IS IS IS SC SC SC SC IS
TSTMS IS IS IS IS IS IS IS IS IS IS IS
Obvis PF PF
MIX HGT <1 <1 3 4 3 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 1
T WIND DIR N NE E SW NW E E SE SE S S S SW S W W W NW
T WIND SPD 2 4 2 1 1 6 8 6 4 5 12 12 11 4 3 14 6 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 4 9 6 4 3 4 3 2 6 35 49 42 2 2 7 3 12
MAX LVORI 10 9 3 3 3 6 8 9 9 8 3 1 1 4 7 6 6 5
STABILITY F A B B B F F F F B B C C G G G G A
CEILING None None 2700 2700 1400 300 None None None
STA PRES 28.62 28.65 28.61 28.61 28.57 28.54 28.44 28.42 28.39
Date 08/17Tue 08/18/26Wed 08/19/26Thu 08/20/26Fri 08/21/26
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 93 67 91 65 92 69 92 65 86
TEMP 92 82 70 70 89 81 68 67 90 83 72 71 90 80 68 66 84 76
DEWPT 72 70 69 68 66 65 64 64 67 67 67 67 68 67 66 64 65 64
RH 52 67 97 93 47 58 87 90 47 59 84 87 49 65 93 93 53 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW FW FW FW FW SC SC SC SC B1 B1 B1 B1 B1
POP 12HR 5 10 5 5 5 10 40 30 30
RAIN SHWRS SC SC IS SC
TSTMS 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