Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Tue Sep 1 2026
VAZ018-020800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
731 PM EDT Tue Sep 1 2026
Date 09/01/26 Wed 09/02/26 Thu 09/03/26 Fri
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 70 93 70 94 71
TEMP 80 76 74 72 73 84 89 91 83 78 75 73 73 84 91 92 85 77 73 72 73
DEWPT 67 66 65 65 66 68 68 67 67 66 65 65 66 69 69 68 68 67 67 67 68
MIN/MAX RH 84 45 84 46 87
RH 65 71 74 79 79 59 50 45 59 67 71 76 79 61 49 46 57 71 81 84 84
WIND DIR NW NW NW NW NW W W W W W NW NW NW W W W W W W W W
WIND SPD 4 3 3 2 2 1 3 3 2 3 3 3 3 2 3 3 2 2 2 2 3
CLOUDS FW FW FW CL FW CL SC FW FW FW CL CL CL CL FW FW FW FW FW CL FW
CLOUDS(%) 21 8 15 3 6 3 31 25 12 6 4 5 5 5 12 16 15 11 10 4 10
VSBY 10 10 9 8 5 10 10 10 10 9 8 9 10 10 10 10 10
POP 12HR 0 0 0 5 0
MIX HGT <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 4 6 6 <1
T WIND DIR W W NW W W NW W W W W NW W W NW NW W W
T WIND SPD 4 3 4 3 3 4 5 4 2 3 4 5 4 9 8 8 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 2 2 3 22 41 32 1 2 2 3 4 46 61 63 2
MAX LVORI 3 3 3 4 4 2 1 1 3 3 3 4 4 1 1 1 3
STABILITY F G G G A A A A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 27.87 27.89 27.91 27.86 27.86 27.87 27.89 27.83
Date 09/04Sat 09/05/26Sun 09/06/26Mon 09/07/26Tue 09/08/26
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 93 69 88 64 82 62 81 62 83
TEMP 92 80 72 70 85 75 68 64 79 72 65 62 78 71 64 63 81 72
DEWPT 70 68 68 68 69 66 64 62 65 62 59 60 65 62 59 59 64 61
RH 49 67 87 93 59 74 87 93 62 71 81 93 64 73 84 87 56 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC SC B1 SC SC SC SC SC B1 B1 B1 SC SC B1 B1
POP 12HR 20 10 40 20 20 20 20 10 10
RAIN SHWRS IS SC IS IS IS IS IS IS
TSTMS 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