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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Thu Jul 23 2026
NCZ003-232000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
331 AM EDT Thu Jul 23 2026
Date Thu 07/23/26 Fri 07/24/26 Sat 07/25/26
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 71 64 70 64 77
TEMP 70 69 70 71 69 67 66 65 64 65 66 68 70 70 67 66 64 66 70 73 76 73
DEWPT 67 67 64 63 63 64 63 61 61 62 63 64 65 69 67 65 64 66 70 70 71 70
MAX/MIN RH 75 92 84 100 85
RH 90 93 81 76 81 90 90 87 90 90 90 87 84 97100 97100100100 90 85 90
WIND DIR N NE E E E E N N N NE E E E E N N N N N SE SE N
WIND SPD 1 2 3 4 4 2 0 0 0 1 2 3 3 1 0 0 0 0 0 2 2 0
CLOUDS B2 B2 B2 B2 B1 B1 OV OV B2 B1 OV B2 B2 B2 OV OV B2 B2 B2 B2 B2 B1
CLOUDS(%) 72 77 81 75 62 65 92 90 80 66 88 82 76 78 88 91 87 80 82 76 76 63
VSBY 5 6 8 10 9 8 7 8 7 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 50 40 50 70 70
RAIN SHWRS SC SC SC SC SC IS SC IS SC SC NM NM NM NM NM NM NM NM SC
TSTMS IS SC IS IS SC SC IS
MIX HGT <1 <1 2 2 2 <1 <1 <1 <1 <1 2 2 2 1 <1 <1 <1 <1 <1 2 1 1
T WIND DIR N NE E NE E E NE NE NE NE NE NE NE E NE E NE E NE NE S SW
T WIND SPD 11 9 12 12 8 6 6 6 9 9 8 11 6 5 6 5 5 3 2 1 6 1
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 5 12 27 33 22 3 3 3 4 10 18 30 18 3 3 3 3 4 3 3 13 1
MAX LVORI 6 5 3 3 3 6 6 6 5 5 4 4 4 6 9 9 9 9 9 6 4 8
STABILITY F B B C C F F F F B B B B F F F F B B B B F
CEILING 2000 2100 600 600 600 900 600 600 600 1300
STA PRES 28.22 28.22 28.24 28.21 28.24 28.21 28.21 28.19 28.19 28.13
Date Sun 07/26/26Mon 07/27/26Tue 07/28/26Wed 07/29/26
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 62 84 63 86 66 88 67 85
TEMP 65 66 80 77 67 67 84 80 69 71 85 81 71 70 83 79
DEWPT 65 66 70 71 66 67 69 72 67 68 72 72 68 68 70 70
RH 100100 72 82 97100 61 77 93 90 65 74 90 93 65 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 FW SC SC FW SC B1 SC SC B1 SC SC B1
POP 12HR 30 40 10 5 10 30 30 30
RAIN SHWRS SC IS SC SC SC SC SC
TSTMS IS IS SC SC SC 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