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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Jul 18 2026
NCZ003-190800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 PM EDT Sat Jul 18 2026
Date 07/18/26 Sun 07/19/26 Mon 07/20/26 Tue
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 70 87 66 85 67
TEMP 75 73 72 74 83 86 84 80 73 70 68 70 79 82 84 79 72 70 68 71
DEWPT 71 70 69 71 73 72 73 73 70 68 67 69 72 73 73 73 71 69 68 70
MIN/MAX RH 92 65 99 70 100
RH 87 90 90 90 72 63 70 79 90 93 97 97 79 74 70 82 97 97100 97
WIND DIR SW SW SW W W NW NW NW NW N N N SE S S N N N N N
WIND SPD 1 1 2 2 3 4 3 1 1 0 1 0 1 4 2 0 0 0 0 0
CLOUDS SC SC SC B1 SC B2 B1 SC FW SC SC SC SC B2 B2 B1 B1 B1 B1 B2
CLOUDS(%) 47 44 29 55 45 71 56 46 16 27 48 49 41 85 85 64 64 63 65 70
VSBY 9 9 8 10 9 9 9 6 7 10 10 7 7 6 6 7 7 10 10
POP 12HR 20 60 20 80 50
RAIN SHWRS NM SC IS IS IS O O SC SC NM
TSTMS SC SC IS IS SC SC SC IS
MIX HGT <1 <1 <1 <1 4 5 4 <1 <1 <1 <1 <1 3 3 2 <1
T WIND DIR W W W W W W W NW NW NW N N SE S NE E
T WIND SPD 4 5 6 9 8 11 10 10 4 4 3 3 1 3 3 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 3 3 10 40 46 45 5 2 2 2 4 4 12 11 2
MAX LVORI 6 6 6 5 3 1 1 4 6 6 8 8 4 4 3 5
STABILITY F F G B A C B F G G F A A C B F
CEILING None None None None None None None 1500 3600
STA PRES 28.05 28.04 28.06 28.01 28.05 28.06 28.09 28.06
Date 07/21Wed 07/22/26Thu 07/23/26Fri 07/24/26Sat 07/25/26
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 88 69 86 62 81 61 81 64 84
TEMP 84 82 73 72 83 80 67 65 79 76 64 65 79 77 66 68 82 78
DEWPT 74 73 70 71 71 69 63 62 63 65 60 62 65 67 63 65 68 69
RH 72 74 90 97 67 69 87 90 58 69 87 90 62 71 90 90 63 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B2 B2 B1 SC FW SC SC FW SC SC SC SC B1 SC B1
POP 12HR 70 70 60 20 20 10 20 20 30
RAIN SHWRS NM NM SC NM NM SC IS IS IS IS IS IS IS IS SC
TSTMS SC NM SC IS 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