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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri Sep 25 2026
NCZ005-252000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
301 AM EDT Fri Sep 25 2026
Date Fri 09/25/26 Sat 09/26/26 Sun 09/27/26
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 72 47 79 50 83
TEMP 50 49 61 70 72 62 53 50 49 49 69 78 78 64 57 55 52 51 70 79 79 66
DEWPT 47 44 43 41 41 42 40 39 40 42 45 43 43 47 47 47 47 48 50 47 48 50
MAX/MIN RH 33 77 28 92 32
RH 89 83 51 35 33 48 61 66 71 77 42 29 29 54 69 74 83 89 49 32 34 56
WIND DIR N N N N N NE N NW NW NW N N N NW N NW NW NW NW NW NW NW
WIND SPD 8 8 11 10 9 3 3 3 5 4 6 6 6 3 4 3 3 4 6 8 9 6
CLOUDS CL CL CL FW FW CL CL CL CL CL CL CL FW FW CL CL CL CL CL FW FW FW
CLOUDS(%) 3 2 3 6 13 5 3 3 4 0 4 3 9 21 3 3 2 0 4 10 12 20
VSBY 8 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 3 4 4 <1 <1 <1 <1 <1 3 4 5 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR N N N N N N N NW NW NW N N NW NW N NW W NW NW NW NW N
T WIND SPD 6 8 19 17 18 4 3 5 5 5 13 13 17 6 9 5 5 5 18 16 17 10
DISPERSION PR VP VP VP PR VP VP VP VP PR
ADI 5 9 60 63 70 2 2 3 3 6 50 71100 3 4 3 3 6 77 90 72 5
MAX LVORI 6 4 1 1 1 2 3 3 3 4 1 1 1 3 3 4 5 5 1 1 1 3
STABILITY E B C C C G G G F B B B B G F G G B B B C F
CEILING None None None None None None None None None None
STA PRES 29.36 29.28 29.29 29.25 29.23 29.17 29.20 29.15 29.14 29.10
Date Mon 09/28/26Tue 09/29/26Wed 09/30/26Thu 10/01/26
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 54 82 55 83 55 85 61 86
TEMP 57 56 81 71 59 56 81 71 59 57 83 74 65 63 82 76
DEWPT 51 52 56 57 56 55 57 58 56 56 60 61 61 62 65 65
RH 80 86 42 61 90 96 44 63 90 96 46 64 87 97 56 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW SC SC SC FW CL FW FW FW FW SC SC SC SC
POP 12HR 0 0 0 0 0 0 10 10
$$
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