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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Aug 23 2026
NCZ003-232000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 AM EDT Sun Aug 23 2026
Date Sun 08/23/26 Mon 08/24/26 Tue 08/25/26
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 81 58 83 57 83
TEMP 73 79 80 71 64 61 58 60 75 81 82 72 65 60 58 60 74 81 83 75
DEWPT 63 59 58 59 56 55 54 55 59 58 58 59 55 53 51 53 58 59 62 63
MAX/MIN RH 47 84 43 81 47
RH 71 50 47 66 75 81 86 84 58 46 44 64 70 78 77 78 57 47 49 66
WIND DIR NW NW NW NW NW NW NW NW NW W W N N N NW N N S S N
WIND SPD 6 6 5 2 2 1 2 3 2 3 4 2 3 2 2 2 0 3 3 0
CLOUDS CL FW CL CL CL FW FW FW FW SC SC SC FW FW FW FW FW FW FW FW
CLOUDS(%) 4 6 3 3 3 20 9 13 23 31 38 26 18 18 16 23 24 21 14 10
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 4 6 5 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NW NW NW NW N NW NW N NW W W NE N N N N E SW SW S
T WIND SPD 17 14 13 5 4 3 5 3 5 4 4 1 3 4 4 4 4 1 2 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 75 98 88 3 2 2 3 3 28 36 31 1 2 2 2 4 15 6 12 1
MAX LVORI 1 1 1 3 4 5 5 5 2 1 1 3 3 4 4 4 2 2 2 3
STABILITY B B 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 28.11 28.09 28.12 28.13 28.15 28.13 28.17 28.18 28.23 28.18
Date Wed 08/26/26Thu 08/27/26Fri 08/28/26Sat 08/29/26
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 61 85 65 84 64 86 65 86
TEMP 64 65 84 77 68 67 80 76 67 67 83 78 67 67 83 77
DEWPT 59 59 67 67 65 65 70 70 66 66 68 68 65 65 67 68
RH 84 81 57 71 90 93 72 82 97 97 61 71 93 93 59 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC B1 B1 SC B1 B2 SC SC SC SC SC SC SC B1
POP 12HR 0 30 20 70 20 20 20 30
RAIN SHWRS SC IS IS SC NM IS IS IS SC
TSTMS SC IS IS IS SC IS 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