Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Sat Aug 15 2026
NCZ003-152000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
631 AM EDT Sat Aug 15 2026
Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26
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 87 72 89 73 92
TEMP 74 81 86 85 79 75 73 72 73 80 87 87 81 76 74 73 74 84 90 88 81
DEWPT 72 72 73 74 74 73 72 71 72 74 74 74 73 72 71 70 70 72 72 72 71
MAX/MIN RH 63 98 62 91 54
RH 93 74 65 70 85 94 97 97 97 82 65 65 77 87 90 90 87 67 56 59 72
WIND DIR NE NE W E W N N W W SW SW SW W W W W W W NW NW NW
WIND SPD 3 2 3 2 1 2 2 2 1 3 4 4 3 4 4 4 4 5 5 5 4
CLOUDS SC SC B1 B1 B1 SC B1 SC SC B1 B1 B1 FW FW FW FW FW SC FW SC SC
CLOUDS(%) 26 31 57 59 53 48 51 44 31 54 53 52 18 15 13 12 13 30 25 32 40
VSBY 9 10 10 10 10 10 9 6 6 10 10 10 10 10 10 10 10 10 10 10 6
POP 12HR 40 30 30 5 10
RAIN SHWRS SC SC IS IS SC IS SC SC
TSTMS IS IS IS IS IS IS IS IS
Obvis PF
MIX HGT <1 3 4 2 <1 <1 <1 <1 <1 2 5 4 <1 <1 <1 <1 <1 3 6 4 <1
T WIND DIR N N NW W SE E E E E SW W W SW W W W W W W NW W
T WIND SPD 4 5 5 5 1 2 5 4 3 2 11 11 3 3 4 3 2 6 9 13 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 4 20 29 18 1 1 3 2 3 7 75 54 2 2 2 2 2 24 64 77 1
MAX LVORI 6 3 3 3 6 7 9 8 9 4 1 1 4 6 6 7 6 3 1 1 3
STABILITY A A B B F G F F A B A A G F F F A A A A F
CEILING None 6800 None None None None None None None None
STA PRES 29.08 29.02 29.02 29.0 28.99 28.89 28.87 28.86 28.86 28.80
Date Tue 08/18/26Wed 08/19/26Thu 08/20/26Fri 08/21/26
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 71 89 68 90 71 90 68 85
TEMP 73 72 87 81 71 69 87 82 73 72 88 80 70 68 82 76
DEWPT 70 69 68 67 65 65 69 68 68 68 68 67 66 65 65 65
RH 90 90 53 63 81 87 55 63 84 87 52 65 87 90 56 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW SC FW FW FW SC SC SC B1 B1 SC B1 B1
POP 12HR 10 5 5 5 5 40 40 40
RAIN SHWRS SC SC 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