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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sat Jul 18 2026
NCZ003-190800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 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 71 90 68 85 69
TEMP 82 81 75 73 72 74 84 88 85 80 74 71 70 70 78 82 84 79 73 71 70 71
DEWPT 71 72 72 71 69 71 72 71 73 72 71 70 68 69 71 72 72 72 71 70 69 71
MIN/MAX RH 93 58 98 67 100
RH 69 74 90 93 90 90 67 57 67 77 90 97 93 97 79 72 67 79 93 97 97100
WIND DIR W W W W W W W W W W NW N N N E S S S S SW SW SW
WIND SPD 6 4 4 5 4 4 5 5 3 2 2 3 4 4 3 4 3 2 2 3 4 5
CLOUDS B2 B2 SC SC SC FW SC B2 B1 B1 SC SC SC SC SC B2 B2 B2 B2 B1 B1 B2
CLOUDS(%) 74 80 45 47 28 23 37 73 56 52 40 33 26 43 34 77 77 73 73 60 68 71
VSBY 7 10 9 9 8 10 10 9 9 6 7 10 10 7 7 6 6 6 6 10 10
POP 12HR 10 60 30 70 60
RAIN SHWRS SC NM SC SC IS IS NM NM NM NM IS IS SC
TSTMS SC SC SC SC IS SC SC SC IS
MIX HGT 3 <1 <1 <1 <1 <1 4 4 3 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR W W W W SW W W W W S W NW NW N E W NE NE
T WIND SPD 16 12 6 4 3 5 6 12 12 2 3 3 2 2 4 3 8 5
DISPERSION VP VP PR VP VP VP VP VP VP VP VP VP
ADI 48 8 5 3 2 6 34 67 43 1 2 2 1 3 19 13 41 3
MAX LVORI 3 3 6 6 7 6 3 1 1 4 7 8 8 8 3 3 1 4
STABILITY C E E E F A A A B F G G F A A C B F
CEILING 3600 None None None 9900 None None None 1700 3600
STA PRES 28.87 28.86 28.86 28.87 28.82 28.84 28.87 28.90 28.87
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 87 71 85 64 80 62 81 65 84
TEMP 84 82 74 72 83 79 67 64 78 75 64 64 79 76 66 67 81 78
DEWPT 73 72 72 72 72 69 64 63 63 64 62 62 65 65 64 65 67 67
RH 70 72 93100 70 72 90 97 60 69 93 93 62 69 93 93 63 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B2 B2 B2 SC SC SC SC FW SC SC SC SC B1 SC B1
POP 12HR 50 70 60 20 20 10 20 20 30
RAIN SHWRS SC SC SC NM NM NM IS IS IS IS IS IS IS IS SC
TSTMS SC SC 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