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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Tue Sep 1 2026
NCZ006-012000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
331 AM EDT Tue Sep 1 2026
Date Tue 09/01/26 Wed 09/02/26 Thu 09/03/26
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 96 75 99 75 100
TEMP 72 73 87 94 95 85 80 78 76 76 91 98 98 87 82 80 77 77 91 99 98 88
DEWPT 69 70 71 68 67 68 68 68 68 69 71 69 68 69 69 69 69 70 72 69 69 70
MAX/MIN RH 40 80 38 81 37
RH 90 90 59 43 40 57 67 71 76 79 52 39 38 55 65 69 76 79 54 38 39 55
WIND DIR N N NW NW NW N SW SW W W NW W SW S S SW SW SW W SW SW S
WIND SPD 0 0 2 2 1 0 1 1 1 1 2 1 1 1 1 1 2 2 3 3 4 3
CLOUDS FW FW CL FW FW FW FW FW FW CL CL CL SC SC FW FW CL CL CL FW FW SC
CLOUDS(%) 15 17 5 10 12 15 15 15 10 1 1 5 27 38 12 6 3 3 2 20 20 31
VSBY 9 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 0 5
MIX HGT <1 <1 3 7 7 <1 <1 <1 <1 <1 4 7 7 <1 <1 <1 <1 <1 3 8 7 <1
T WIND DIR SW W NW NW W SW SW SW SW W NW W W SW SW SW SW W NW W SW SW
T WIND SPD 2 1 6 4 4 2 3 3 2 2 6 5 5 3 4 4 4 4 6 6 9 5
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 31 40 41 1 2 2 1 2 35 49 47 2 2 2 2 4 30 64 75 3
MAX LVORI 7 7 1 1 1 3 3 3 4 5 1 1 1 3 3 3 4 4 2 1 1 3
STABILITY G A A A A G 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 None
STA PRES 29.45 29.37 29.39 29.41 29.44 29.36 29.37 29.38 29.40 29.32
Date Fri 09/04/26Sat 09/05/26Sun 09/06/26Mon 09/07/26
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 76 99 71 93 66 86 63 84
TEMP 80 77 98 88 75 73 91 83 71 68 84 79 67 64 82 77
DEWPT 69 69 68 69 69 70 69 70 68 67 67 66 64 64 65 64
RH 69 76 38 54 82 90 49 65 90 97 57 64 90100 56 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW SC SC SC SC B1 B1 SC B1 B1 SC SC SC SC
POP 12HR 10 10 20 40 50 30 20 20
RAIN SHWRS IS SC SC SC IS IS
TSTMS IS SC 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