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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
138 PM EDT Wed Jul 15 2026
NCZ003-152000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
138 PM EDT Wed Jul 15 2026
Date Wed 07/15/26 Thu 07/16/26 Fri 07/17/26
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 92 69 96 73 95
TEMP 90 92 86 75 71 69 73 87 94 95 88 79 76 74 76 86 92 94 89
DEWPT 66 65 67 65 65 65 66 69 66 66 69 68 67 66 68 67 67 67 68
MAX/MIN RH 42 85 38 78 41
RH 45 41 53 71 81 87 79 55 40 39 54 69 74 76 76 53 44 41 50
WIND DIR W SW SW W NW NW N N N NW W NW NW N N NE E E SE
WIND SPD 2 2 3 3 3 4 4 4 3 2 1 3 4 5 6 6 5 3 2
CLOUDS FW CL CL CL CL CL CL CL SC SC SC FW FW FW SC FW SC SC SC
CLOUDS(%) 6 2 2 1 4 4 1 4 28 29 27 25 23 11 41 16 30 33 42
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 5 5
MIX HGT 5 6 <1 <1 <1 <1 <1 4 7 7 <1 <1 <1 <1 1 3 7 8 <1
T WIND DIR NW SW SW SW W NW NW N NW W W NW NW N N E SE S NE
T WIND SPD 1 3 4 3 2 3 4 5 2 3 6 2 3 3 3 3 2 4 4
DISPERSION VP VP VP VP VP VP VP PR VP
ADI 7 24 2 2 1 2 4 29 19 30 3 1 2 2 5 15 19 45 2
MAX LVORI 2 2 2 3 5 5 4 2 2 1 2 3 3 4 4 2 2 1 2
STABILITY A A G G G F A A A A G G F F B B A A F
CEILING None None None None None None None None None
STA PRES 28.95 28.96 28.95 28.97 28.91 28.92 28.96 28.98 28.92
Date Sat 07/18/26Sun 07/19/26Mon 07/20/26Tue 07/21/26
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 72 92 70 89 68 88 69 91
TEMP 75 74 91 83 72 72 88 80 70 70 85 82 71 71 88 85
DEWPT 68 70 70 71 71 71 71 70 69 68 68 69 68 69 69 69
RH 79 87 50 67 97 97 57 72 97 93 57 65 90 93 54 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 SC SC B1 B1 SC SC SC SC SC SC SC
POP 12HR 10 50 50 50 30 20 10 20
RAIN SHWRS SC SC SC SC IS IS
TSTMS SC SC SC 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