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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 PM EDT Tue Sep 15 2026
VAZ024-152000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
101 PM EDT Tue Sep 15 2026
Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26
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 81 56 87 62 92
TEMP 78 80 70 64 60 57 61 76 85 86 75 69 67 64 65 85 92 89 78
DEWPT 57 59 59 57 57 56 57 62 63 63 63 62 61 60 61 66 67 68 69
MAX/MIN RH 46 99 46 92 43
RH 48 49 68 78 90 96 87 62 48 46 66 78 81 87 87 53 44 50 74
WIND DIR SE SE SE N N N N N E SE SE N N N N N W W N
WIND SPD 3 3 1 0 0 0 0 0 3 3 1 0 0 0 0 0 2 2 0
CLOUDS FW FW FW FW FW FW CL FW FW FW FW FW CL CL CL FW SC SC SC
CLOUDS(%) 10 23 12 17 16 12 3 9 18 6 11 10 4 0 0 13 48 48 48
VSBY 10 10 10 10 10 9 7 7 10 10 10 10 10 5 3 10 10 10 10
POP 12HR 0 0 0 0 20
RAIN SHWRS IS IS
TSTMS IS IS
MIX HGT 4 4 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 5 5 <1
T WIND DIR S S SE SE NW NW NW W E SE S S W NW NW W W W W
T WIND SPD 5 4 3 2 2 2 1 3 2 4 3 2 3 3 2 3 9 10 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 27 21 2 1 1 1 1 8 10 14 2 1 2 2 2 10 55 56 2
MAX LVORI 2 2 3 5 7 8 5 2 2 2 3 4 5 6 6 2 1 1 4
STABILITY B B G G G G A A B B G G G G A A B B F
CEILING None None None None None None None None None
STA PRES 28.79 28.82 28.82 28.85 28.79 28.80 28.77 28.75 28.65
Date Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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 68 91 64 83 63 89 65 86
TEMP 70 70 90 75 69 64 80 75 66 65 86 78 69 66 86 74
DEWPT 68 68 70 70 66 61 66 65 64 64 70 69 67 66 70 69
RH 93 93 52 84 90 90 62 71 93 97 59 74 93100 59 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B2 B2 B2 B2 B1 B1 B1 SC B1 B1 SC B1 B1
POP 12HR 0 60 30 10 10 30 10 50
RAIN SHWRS NM SC SC SC
TSTMS SC 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