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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Jul 22 2026
NCZ019-230800-
RAWS 312001
36.23N 81.32W Elev. 2380 ft
801 PM EDT Wed Jul 22 2026
Date 07/22/26 Thu 07/23/26 Fri 07/24/26 Sat
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 67 72 62 70 64
TEMP 70 69 68 68 70 72 71 66 66 65 65 63 64 68 70 68 67 67 67 65
DEWPT 69 68 67 67 67 66 66 65 64 63 62 61 64 66 67 66 65 65 65 64
MIN/MAX RH 98 81 100 89 100
RH 97 97 97 97 90 81 84 97 93 93 90 93100 93 90 93 93 93 93 97
WIND DIR N N N NE E E E E E NE NE NE E E E E N N N N
WIND SPD 0 0 1 2 3 4 3 3 2 1 1 2 2 3 2 1 0 0 0 0
CLOUDS OV B2 B2 B2 B2 B2 B2 B2 B2 OV B2 B2 B2 B2 OV B2 B2 B2 B2 B2
CLOUDS(%) 88 74 86 78 70 71 76 75 78 93 83 77 85 86 88 79 84 84 83 80
VSBY 5 5 2 2 8 9 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 70 60 50 60
RAIN SHWRS NM SC SC NM SC SC NM NM SC SC SC SC SC SC SC SC NM NM NM
TSTMS IS SC IS IS SC SC IS SC IS
Obvis PF PF F PF
MIX HGT <1 <1 <1 <1 2 2 2 <1 <1 <1 <1 1 2 2 2 <1
T WIND DIR W NW NW N NE E E E NE NE NE E NE NE N N
T WIND SPD 2 2 2 3 8 9 9 8 8 4 6 8 6 5 5 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 4 16 24 23 4 4 2 3 13 14 17 15 3
MAX LVORI 8 8 8 8 5 3 4 9 6 6 6 5 5 5 5 6
STABILITY F F F B B C B F F F F B B B B F
CEILING 700 1700 700 500 800 500 400 100 100
STA PRES 27.87 27.90 27.99 28.00 28.03 28.03 28.06 28.02
Date 07/25Sun 07/26/26Mon 07/27/26Tue 07/28/26Wed 07/29/26
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 73 65 82 66 84 67 86 67 83
TEMP 70 71 68 66 79 76 69 68 82 77 69 68 83 78 70 68 81 76
DEWPT 69 68 66 65 69 70 66 66 68 69 65 65 69 69 65 65 67 67
RH 97 90 93 97 72 82 90 93 63 76 87 90 63 74 84 90 63 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC SC B1 SC SC SC SC FW SC SC SC SC SC SC SC
POP 12HR 80 30 30 10 10 20 20 10 20
RAIN SHWRS NM O SC IS SC IS IS IS IS
TSTMS IS SC IS SC IS 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