Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Mon Aug 17 2026
NCZ003-180800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
231 AM EDT Mon Aug 17 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 71 92 70 88 65
TEMP 72 74 85 90 89 81 76 73 71 72 81 85 86 79 72 68 65 68
DEWPT 68 70 70 70 70 74 72 70 69 70 72 70 70 68 66 65 63 64
MIN/MAX RH 93 49 93 57 93
RH 87 87 61 52 54 79 87 90 93 93 74 61 59 69 81 90 93 87
WIND DIR SW SW W W W NW W NW NW NW NW N NW NW N NW NW NW
WIND SPD 2 2 4 4 4 2 2 2 3 4 5 4 5 4 4 2 2 2
WIND GUST 14
CLOUDS SC SC FW SC B1 B2 OV SC FW FW SC FW FW FW FW FW FW FW
CLOUDS(%) 49 37 20 29 59 72 88 44 20 19 31 11 13 8 12 11 6 9
VSBY 10 10 10 10 10 10 10 10 9 9 10 10 10 10 10 10 10 10
POP 12HR 5 30 30 5 0
RAIN SHWRS IS SC
TSTMS IS IS
MIX HGT <1 <1 3 6 4 <1 <1 <1 <1 <1 4 5 6 <1 <1 <1 <1 <1
T WIND DIR W W NW W W NW NW NW NW N N N NW NW N N N N
T WIND SPD 3 4 16 12 9 6 5 5 6 12 13 10 11 14 8 8 5 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 4 70 91 32 3 3 3 3 13 65 66 79 7 4 4 3 7
MAX LVORI 6 5 1 1 1 4 6 6 6 5 3 1 1 3 5 6 6 5
STABILITY F A A A C F F F G A A A A F F G G A
CEILING None None 4200 7000 None None None None None
STA PRES 28.10 28.09 28.05 28.06 28.05 28.08 28.05 28.09 28.09
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 90 68 90 67 85 65 82 64 83
TEMP 86 82 70 71 89 81 70 70 82 76 68 67 79 75 67 66 81 76
DEWPT 66 68 64 66 70 71 68 68 72 72 68 67 71 70 66 66 68 67
RH 51 63 81 84 54 72 93 93 72 87100100 77 84 97100 65 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC B1 B1 B1 B1 B2 B2 B2 B1 B2 B1 SC SC SC
POP 12HR 0 0 40 30 70 60 60 30 20
RAIN SHWRS SC SC SC SC NM NM IS SC NM SC IS
TSTMS SC SC SC IS 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