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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
831 AM EDT Tue Aug 25 2026
NCZ003-252000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
831 AM EDT Tue Aug 25 2026
Date Tue 08/25/26 Wed 08/26/26 Thu 08/27/26
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 82 60 83 65 83
TEMP 72 78 81 73 67 65 63 64 77 82 81 74 70 67 66 68 77 82 80 74
DEWPT 54 57 59 59 57 57 55 58 66 69 71 70 68 67 66 67 72 72 73 71
MAX/MIN RH 48 84 65 100 71
RH 53 48 47 62 70 75 75 81 69 65 72 87 93100100 97 85 72 79 90
WIND DIR E SE S S SW SW W W S S S N N N N N S S S N
WIND SPD 1 3 3 1 1 1 1 1 3 6 4 0 0 0 0 0 1 3 3 0
CLOUDS CL CL CL FW FW FW FW FW FW SC B1 B1 B1 SC B1 B1 B1 B2 B2 B1
CLOUDS(%) 5 3 3 10 24 9 10 18 25 47 69 63 63 46 57 58 54 73 73 64
VSBY 10 10 10 10 10 10 10 10 10 10 10 3 1 1 10 10 10 10 10 10
POP 12HR 0 0 30 40 60
RAIN SHWRS IS SC SC SC SC SC NM NM SC
TSTMS IS SC SC IS SC SC IS
MIX HGT 3 5 4 <1 <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR NE N S SE N N N N S SW S S S SW S S SW S S S
T WIND SPD 5 0 1 2 2 2 2 1 11 11 12 9 3 2 3 9 10 9 11 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 22 0 6 1 1 1 1 1 41 45 42 4 2 1 2 10 27 47 34 4
MAX LVORI 2 2 2 3 3 4 4 5 3 1 3 5 7 10 10 8 4 3 3 6
STABILITY A A A G G G G A A C C F F F F B B B B F
CEILING None None None None None 2900 2100 None 500 1700
STA PRES 28.23 28.19 28.21 28.21 28.22 28.18 28.17 28.14 28.15 28.10
Date Fri 08/28/26Sat 08/29/26Sun 08/30/26Mon 08/31/26
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 65 84 64 83 65 85 67 89
TEMP 68 68 83 75 66 66 81 76 68 68 82 78 69 69 86 81
DEWPT 67 67 70 70 66 66 70 70 67 67 71 70 67 67 70 70
RH 97 97 65 84100100 69 82 97 97 69 76 93 93 59 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B2 B1 B1 B1 B1 SC SC B1 SC SC SC SC SC
POP 12HR 30 60 20 40 10 20 5 10
RAIN SHWRS SC IS NM IS SC IS
TSTMS IS 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