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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
245 PM EDT Fri Jul 17 2026
NCZ003-180800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
245 PM EDT Fri Jul 17 2026
Date 07/17/26 Sat 07/18/26 Sun 07/19/26 Mon
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 73 89 71 90 68
TEMP 93 89 79 75 73 75 87 89 84 81 75 73 72 73 83 88 85 80 73 70 68 70
DEWPT 67 69 69 68 68 70 72 69 70 71 71 71 70 71 72 71 72 71 70 70 68 70
MIN/MAX RH 84 52 94 56 100
RH 43 52 72 79 84 84 61 52 63 72 87 93 93 93 70 57 65 74 90100100100
WIND DIR E SE E NE N NW SW SW W SW W W W W W W W NW NW N N NE
WIND SPD 2 1 2 2 2 2 4 9 6 5 4 4 4 4 4 4 3 3 3 3 4 4
CLOUDS SC SC SC B1 SC SC SC B1 B1 B1 SC SC FW B1 B1 B2 B2 B1 B1 SC SC SC
CLOUDS(%) 33 28 37 65 40 26 33 65 65 60 39 31 25 56 55 74 74 61 61 31 41 50
VSBY 4 4 5 5 10 10 10 6 6 7 7 10 10 10 10 6 6 7
POP 12HR 5 50 20 60 40
RAIN SHWRS SC SC IS NM NM SC SC
TSTMS SC SC IS SC NM SC IS
Obvis K K K K
MIX HGT 7 <1 <1 <1 <1 <1 4 6 3 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR SE W N W W NW W SW SW SW NW W W W NW W W W
T WIND SPD 5 4 3 2 3 2 11 12 11 2 4 4 3 4 12 14 11 9
DISPERSION VP VP VP VP PR VP VP VP VP VP VP VP
ADI 45 2 2 1 2 2 59 57 36 2 2 2 2 4 58101 61 4
MAX LVORI 1 2 3 4 5 5 1 1 1 3 5 6 7 6 1 1 1 3
STABILITY A G G F G A A C C E F F F C B B B F
CEILING None None None None 3600 None None 8300 7100 None
STA PRES 28.95 28.96 28.94 28.94 28.84 28.84 28.83 28.87 28.82
Date 07/20Tue 07/21/26Wed 07/22/26Thu 07/23/26Fri 07/24/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 85 68 90 71 86 65 83 64 85
TEMP 83 81 71 70 87 84 74 72 84 79 68 66 80 78 66 66 82 79
DEWPT 71 71 70 70 71 70 70 71 71 68 64 63 63 63 62 63 64 64
RH 67 72 97100 59 63 87 97 65 69 87 90 56 60 87 90 55 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC SC B1 B1 SC SC B1 B1 B1 SC SC FW SC SC SC B1
POP 12HR 40 20 20 20 50 30 10 20 20
RAIN SHWRS SC IS IS IS IS SC SC SC IS IS IS
TSTMS SC IS 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