Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 PM EDT Thu Sep 17 2026
NCZ003-180800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
931 PM EDT Thu Sep 17 2026
Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun
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 68 90 68 80 66
TEMP 72 70 69 69 83 89 88 78 72 71 70 69 72 77 80 75 70 69 68 68
DEWPT 66 66 66 67 70 68 68 71 70 70 69 69 69 69 68 69 67 67 68 68
MIN/MAX RH 94 48 99 67 100
RH 81 87 90 93 65 50 52 79 93 97 97100 90 76 67 82 90 93100100
WIND DIR W NW NW N N N NE E NE NE NE NE E E E E E SE SE S
WIND SPD 2 3 4 4 3 3 3 3 3 4 4 5 5 4 4 3 2 1 1 1
CLOUDS SC SC FW FW FW SC B1 B1 B1 B2 B2 B1 B2 B1 B1 B1 B1 B2 B2 B1
CLOUDS(%) 38 26 22 16 14 38 58 57 52 74 86 67 79 64 66 67 69 70 75 65
VSBY 10 10 10 10 10 7 7 7 7 6 7 6 6 6 6 7
POP 12HR 20 40 60 50 20
RAIN SHWRS IS SC SC SC SC SC SC SC SC SC IS IS
TSTMS IS SC SC IS IS IS
MIX HGT <1 <1 <1 <1 4 6 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR W W NW W N NW NE S W NE NE NE NE E E E
T WIND SPD 3 2 3 2 8 6 4 2 3 6 10 9 10 6 5 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 1 2 2 36 46 14 1 2 5 7 12 20 15 13 2
MAX LVORI 5 7 7 6 3 1 2 5 7 7 8 7 4 4 3 5
STABILITY G G F B B B C F F E E D D D D F
CEILING None None 3400 7000 800 500 4300 11000
STA PRES 29.06 29.04 28.97 28.98 29.00 29.03 28.99
Date 09/20Mon 09/21/26Tue 09/22/26Wed 09/23/26Thu 09/24/26
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 85 67 86 65 77 59 64 57 66
TEMP 82 78 69 68 83 76 67 66 73 69 63 60 62 60 57 57 64 61
DEWPT 70 71 69 68 69 70 67 66 69 68 63 60 62 60 57 57 62 61
RH 67 79100100 63 82100100 87 97100100100100100100 93100
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 SC SC B2 B2 B2 B1 B2 B2 B2 B1 B1 B1 B1 B1 B1
POP 12HR 40 40 60 60 60 50 40 20 20
RAIN SHWRS SC SC IS IS NM NM SC SC NM SC IS SC SC IS IS
TSTMS SC IS SC IS 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