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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Thu Jul 30 2026
NCZ003-302000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
931 AM EDT Thu Jul 30 2026
Date Thu 07/30/26 Fri 07/31/26 Sat 08/01/26
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 84 65 84
TEMP 74 80 82 75 68 65 62 65 76 81 82 77 70 67 66 68 76 81 80 76
DEWPT 59 56 56 61 57 56 56 59 62 62 63 65 63 62 61 64 68 69 69 69
MAX/MIN RH 40 84 51 89 66
RH 59 44 41 62 68 73 81 81 62 53 53 67 78 84 84 87 76 67 69 79
WIND DIR N NW N N N N N N E SW SW S SE N E S S S S S
WIND SPD 6 5 6 5 6 5 4 4 2 2 2 1 1 0 1 2 4 6 6 4
CLOUDS CL CL CL CL CL FW CL FW FW SC FW FW SC SC SC B1 B1 B2 B1 B2
CLOUDS(%) 1 4 2 1 4 6 5 6 10 33 22 17 28 49 49 56 63 73 64 70
VSBY 10 10 10 10 10 10 10 10 10 10 10 7 7 7 7 7 10 10 10 10
POP 12HR 0 0 0 0 20
RAIN SHWRS SC SC SC SC NM
TSTMS SC SC SC
MIX HGT 4 6 6 <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 <1 2 6 4 <1
T WIND DIR N NW NW N N NW N N E
T WIND SPD 9 8 9 8 5 4 3 3 1
DISPERSION PR PR PR VP VP VP VP VP VP
ADI 46 59 70 4 3 2 2 3 6 0 0 0 0 0 0 0 0 0 0 0
MAX LVORI 1 1 1 3 3 3 5 5 3 2 2 4 4 6 6 6 4 4 4 4
STABILITY A A A F F F F A A A A A A A A A A A A A
CEILING None None None None None None None 3900 3000
STA PRES 28.87 28.93 28.95 28.96 0.0 0.0 0.0 0.0 0.0
Date Sun 08/02/26Mon 08/03/26Tue 08/04/26Wed 08/05/26
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 68 78 67 80 68 79 68 81
TEMP 71 69 74 73 70 69 77 75 70 69 76 75 71 69 79 76
DEWPT 68 69 72 72 70 69 73 73 70 69 73 73 71 69 74 73
RH 90100 93 97100100 87 94100100 90 94100100 85 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV B2 OV B2 B2 B2 B2 B1 B2 B2 B2 B1 B1 B2 B2
POP 12HR 60 80 60 60 40 60 30 60
RAIN SHWRS NM NM SC O NM IS SC NM SC IS IS NM SC SC NM
TSTMS SC IS SC SC SC IS SC IS SC
$$
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