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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EDT Fri Aug 14 2026
VAZ024-142000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
431 AM EDT Fri Aug 14 2026
Date Fri 08/14/26 Sat 08/15/26 Sun 08/16/26
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 92 70 90 70 93
TEMP 70 71 81 88 88 79 75 73 71 72 80 86 84 78 74 72 70 72 83 91 89 82
DEWPT 69 70 73 74 74 74 73 72 71 72 73 73 74 73 72 71 70 72 73 74 75 74
MAX/MIN RH 58 100 63 100 58
RH 97 97 77 63 63 85 94 97100100 79 65 72 85 93 97100100 72 58 64 77
WIND DIR N N W W W N N N N N NE NE NE SE N N N S SW SW W W
WIND SPD 0 0 1 3 3 1 1 0 0 1 1 2 2 1 0 0 0 1 2 4 4 2
CLOUDS B1 B1 B2 B2 B1 B1 B2 B2 B1 B1 B1 OV B1 B1 B2 B2 B1 B1 B1 B1 B1 FW
CLOUDS(%) 62 64 86 75 66 64 72 72 66 69 56 88 66 62 72 76 61 58 56 59 59 19
VSBY 8 8 10 10 10 10 7 4 3 4 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 50 60 40 40
RAIN SHWRS SC O SC SC SC SC SC IS SC SC SC SC SC IS IS SC SC
TSTMS SC SC SC IS SC SC SC IS SC SC
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR NW NW W NW W SW S N N E E NE NE NE NE NE S S S SW SW SW
T WIND SPD 2 2 5 5 6 1 1 2 2 2 6 4 6 5 1 1 2 6 8 13 11 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 16 21 26 1 1 1 1 2 21 15 21 3 1 1 1 7 23 77 40 3
MAX LVORI 8 8 3 2 3 6 8 10 10 9 3 3 3 6 8 10 10 8 3 1 1 4
STABILITY F B B B B F F F F B B B B F F F F B B A C G
CEILING 2200 5700 7600 2200 3700 4300 4000 2900 None None
STA PRES 28.57 28.54 28.57 28.58 28.62 28.62 28.62 28.59 28.56 28.44
Date Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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 72 94 68 91 65 91 68 94
TEMP 74 74 93 83 72 70 88 80 68 68 88 82 71 70 91 82
DEWPT 71 71 72 71 70 69 68 67 65 65 68 68 68 68 69 69
RH 90 90 51 67 93 97 52 65 90 90 52 63 90 93 49 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC B1 SC SC SC FW SC SC SC FW FW SC SC
POP 12HR 10 20 30 10 10 10 10 20
RAIN SHWRS IS SC 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