Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Sep 12 2026
VAZ018-122000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Sat Sep 12 2026
Date Sat 09/12/26 Sun 09/13/26 Mon 09/14/26
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 78 67 83 64 84
TEMP 73 77 76 70 69 68 68 68 76 82 81 72 69 67 66 66 77 82 80 68
DEWPT 70 70 70 69 68 67 67 67 69 68 68 66 65 65 64 64 67 65 63 61
MAX/MIN RH 79 99 63 95 53
RH 90 79 82 97 97 97 97 97 79 63 65 81 87 93 93 93 71 56 56 78
WIND DIR SE SE S S S W W W NW NW NW NW NW W NW NW NW NW NW N
WIND SPD 4 5 4 3 3 3 4 5 6 6 6 6 5 3 4 3 4 4 4 2
WIND GUST 14
CLOUDS B2 B2 B2 B2 B2 B1 FW FW FW FW FW CL FW FW FW SC SC SC SC FW
CLOUDS(%) 83 80 84 83 78 58 24 25 22 20 11 1 14 17 24 44 40 35 26 22
VSBY 10 7 6 3 7 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 60 5 0 5
RAIN SHWRS IS SC NM SC IS
TSTMS IS SC SC IS
MIX HGT 1 2 2 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR SE SE SE SW SE SW W W W W NW NW NW W NW NW NW NW NW NW
T WIND SPD 6 11 5 1 1 5 9 9 13 13 14 16 6 6 6 12 14 16 12 5
DISPERSION VP VP VP VP PR PR VP VP VP
ADI 10 23 10 1 1 3 4 10 47 76 79 7 3 3 3 15 62 94 65 3
MAX LVORI 5 3 4 10 10 8 6 6 3 1 1 4 6 6 6 5 3 1 1 4
STABILITY D D D F F F F B B B B F F G F B B B B G
CEILING 0 700 700 None None None None None None None
STA PRES 27.83 27.78 27.77 27.76 27.78 27.75 27.80 27.81 27.89 27.92
Date Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
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 59 80 59 87 62 89 64 86
TEMP 63 59 77 68 62 61 85 74 66 64 87 75 68 65 83 73
DEWPT 57 55 63 61 57 57 67 64 61 61 67 65 63 62 67 64
RH 81 87 62 78 84 87 55 71 84 90 52 71 84 90 59 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC FW FW FW FW FW FW FW FW SC SC SC SC B1
POP 12HR 5 0 0 5 5 20 5 40
RAIN SHWRS IS IS SC
TSTMS 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