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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Sat Aug 22 2026
NCZ006-222000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
331 AM EDT Sat Aug 22 2026
Date Sat 08/22/26 Sun 08/23/26 Mon 08/24/26
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 85 67 86 61 85
TEMP 69 71 76 82 84 78 70 69 67 68 77 84 84 75 69 64 61 63 77 83 85 77
DEWPT 69 70 71 71 71 71 70 68 66 67 66 63 62 62 59 58 57 58 61 60 59 61
MAX/MIN RH 64 99 47 89 42
RH 100 97 85 69 65 79100 97 97 97 69 49 48 64 70 81 87 84 58 46 41 58
WIND DIR N N NW NW S S S SW W W NW NW W W N N N NW NW W W N
WIND SPD 0 0 1 2 3 2 1 2 2 3 5 5 5 1 0 0 0 1 3 4 4 0
CLOUDS OV B2 B1 SC SC B1 B1 FW CL CL CL CL FW FW FW FW CL CL CL FW FW SC
CLOUDS(%) 90 86 67 47 42 51 56 19 4 3 2 4 16 6 15 9 5 4 5 8 17 32
VSBY 6 3 8 10 10 10 10 8 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 10 0 0 0
MIX HGT <1 <1 2 4 4 <1 <1 <1 <1 <1 3 6 7 <1 <1 <1 <1 <1 4 7 7 <1
T WIND DIR SE SE NE NE NE SE SE SW SW W NW NW NW NW N NW N NW NW W W NE
T WIND SPD 2 2 1 3 4 2 2 3 1 3 12 11 10 4 2 3 2 2 6 5 9 2
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 3 16 24 1 1 2 1 3 57 79 90 2 1 2 1 2 32 47 73 1
MAX LVORI 10 8 5 3 2 4 10 8 10 8 1 1 1 3 3 5 5 6 1 1 1 3
STABILITY F B B A A F F G G A A A A G G G G A A A A G
CEILING 1000 None None None None None None None None None
STA PRES 29.33 29.28 29.28 29.25 29.31 29.28 29.34 29.36 29.40 29.36
Date Tue 08/25/26Wed 08/26/26Thu 08/27/26Fri 08/28/26
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 60 85 64 88 68 86 67 88
TEMP 64 62 83 77 67 65 86 80 71 69 84 78 71 68 85 80
DEWPT 55 56 61 64 63 65 69 70 70 69 73 72 71 68 72 72
RH 73 81 47 64 87100 57 72 97100 70 82100100 65 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW SC SC FW SC SC SC B1 B1 B1 B2 B1 SC SC B1
POP 12HR 0 0 5 20 20 60 50 30
RAIN SHWRS IS IS IS SC NM SC IS SC
TSTMS IS IS IS IS SC IS 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