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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 PM EDT Wed Sep 23 2026
VAZ018-240800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
831 PM EDT Wed Sep 23 2026
Date 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat
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 51 63 44 74 45
TEMP 55 55 53 51 54 61 63 55 50 48 45 45 60 72 72 59 51 49 47 46
DEWPT 51 49 48 47 52 53 51 48 45 43 41 39 43 41 42 41 40 40 40 41
MIN/MAX RH 99 66 85 31 84
RH 86 80 83 86 93 75 65 77 83 83 86 79 53 33 34 51 66 71 76 83
WIND DIR E E NE NE NE E E NE NE N N N N N N N NW NW NW NW
WIND SPD 8 6 8 6 5 4 4 3 3 4 4 4 4 4 4 4 4 3 4 4
WIND GUST 23 24 26 24 17 13 14 16 14 14 16 13
CLOUDS OV B2 B2 B2 B2 B1 SC SC CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 89 84 70 78 71 66 49 27 3 5 0 0 3 4 3 1 2 3 2 2
VSBY 4 4 5 2 6 8 10 10 10 9 9
POP 12HR 70 20 0 0 0
RAIN L C C S
MIX HGT 1 1 1 1 2 3 3 <1 <1 <1 <1 <1 2 4 5 <1
T WIND DIR E E NE NE NE NE NE NE NE N N NW N NE N N
T WIND SPD 12 14 17 13 11 12 12 8 5 4 4 4 11 11 10 3
DISPERSION PR PR PR VP VP VP VP VP VP VP VP
ADI 14 10 15 21 23 42 50 4 3 2 2 5 33 53 59 2
MAX LVORI 4 4 4 4 5 3 1 4 5 5 5 4 1 1 1 2
STABILITY D E D D D C B G G F F B B B B F
CEILING 200 200 700 None None None None None None
STA PRES 28.05 28.03 28.02 27.96 27.98 27.96 27.93 27.88
Date 09/26Sun 09/27/26Mon 09/28/26Tue 09/29/26Wed 09/30/26
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 77 48 75 49 77 51 78 55 80
TEMP 76 60 51 49 73 62 53 50 74 63 54 52 75 65 58 57 78 69
DEWPT 45 47 46 45 49 49 47 47 52 51 49 48 57 55 52 52 63 61
RH 33 62 83 86 43 62 80 89 46 65 83 86 54 70 80 83 60 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL FW FW FW FW FW FW FW FW FW FW FW FW SC SC
POP 12HR 0 0 0 0 0 0 0 0 20
RAIN SHWRS 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