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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Tue Sep 8 2026
NCZ005-090800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
501 PM EDT Tue Sep 8 2026
Date 09/08/26 Wed 09/09/26 Thu 09/10/26 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 60 88 65 92 69
TEMP 74 68 64 61 62 78 86 86 77 70 68 66 67 82 90 91 83 75 72 69 70
DEWPT 59 58 58 58 60 64 62 61 60 60 61 62 64 66 65 64 63 65 66 66 67
MIN/MAX RH 95 41 90 40 94
RH 59 70 81 90 93 62 45 43 56 71 78 87 90 58 44 41 51 71 81 90 90
WIND DIR S S S SW SW SW SW S S S SW SW SW SW SW SW SW SW SW W N
WIND SPD 2 3 2 2 2 5 5 5 4 4 5 6 6 9 9 9 5 4 3 2 2
CLOUDS FW SC SC FW FW SC SC CL CL FW FW CL CL FW FW CL FW FW SC FW SC
CLOUDS(%) 24 30 38 23 13 27 40 3 4 9 12 1 2 6 13 4 15 16 28 24 27
VSBY 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 <1 3 6 6 <1 <1 <1 <1 <1 3 7 7 <1
T WIND DIR SE S S S S SW SW SW S S SW SW SW W W SW SW
T WIND SPD 3 3 3 3 3 9 9 11 5 5 6 6 5 17 13 10 4
DISPERSION VP VP VP VP VP VP PR PR PR VP VP VP
ADI 2 2 2 2 4 37 61 75 3 3 3 3 6 52 64 50 2
MAX LVORI 3 3 5 7 6 1 1 1 3 3 4 6 5 1 1 1 2
STABILITY G G G G B B B B F F F F B C C C F
CEILING None None None None None None None None None
STA PRES 29.52 29.53 29.54 29.43 29.40 29.37 29.34 29.22
Date 09/11Sat 09/12/26Sun 09/13/26Mon 09/14/26Tue 09/15/26
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 90 67 85 67 88 67 89 66 89
TEMP 89 78 69 69 83 77 70 69 86 80 70 69 87 80 70 68 87 80
DEWPT 69 69 69 69 73 72 70 69 72 71 70 69 69 67 66 67 68 68
RH 52 74100100 72 85100100 63 74100100 55 65 87 97 53 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B2 B2 B2 B2 B1 B1 B1 B1 SC SC FW SC FW FW FW FW
POP 12HR 40 60 70 40 30 10 10 5 20
RAIN SHWRS SC NM SC SC NM SC SC IS
TSTMS SC IS SC 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