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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Jul 22 2026
NCZ003-230800-
RAWS 310302
36.35N 80.48W Elev. 1076 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 73 62 73 63
TEMP 71 70 68 68 71 72 71 68 65 64 64 63 67 70 73 70 67 66 65 64
DEWPT 71 70 68 67 65 63 63 65 65 63 63 63 66 67 67 67 67 66 65 64
MIN/MAX RH 100 73 100 84 100
RH 100100100 97 81 73 76 90100 97 97100 97 90 81 90100100100100
WIND DIR W NW NE NE NE NE E E NE NE NE NE NE E E E NE NE NE NE
WIND SPD 3 3 4 10 8 8 5 5 5 5 6 6 5 5 3 2 3 3 4 3
CLOUDS OV OV OV B2 B2 B1 B1 SC B2 B2 B1 B2 OV OV B2 B2 B2 OV B2 B2
CLOUDS(%) 92 90 93 74 80 62 54 37 81 83 69 76 88 88 86 83 84 89 85 81
VSBY 8 7 2 2 9 10 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 50 40 40 50
RAIN SHWRS NM NM NM SC SC IS SC IS SC SC SC SC SC IS IS SC SC SC
TSTMS IS SC SC IS SC IS IS IS
Obvis PF PF
MIX HGT <1 <1 <1 1 2 3 3 <1 <1 <1 <1 1 2 3 3 <1
T WIND DIR SW NE W N NE NE E NE NE NE NE NE E E NE N
T WIND SPD 1 1 2 10 17 14 11 6 6 6 6 8 9 6 3 6
DISPERSION VP VP VP PR PR PR PR VP VP VP VP
ADI 1 1 2 17 42 46 36 3 5 5 5 12 23 20 11 3
MAX LVORI 10 10 10 5 3 3 3 6 9 9 7 7 5 4 4 6
STABILITY F F E C C C C F E E E C C C B F
CEILING 400 400 500 None 3100 2100 1700 1600 500
STA PRES 28.89 28.92 29.04 29.04 29.06 29.07 29.09 29.04
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 75 64 82 66 85 67 87 67 85
TEMP 72 71 67 66 80 77 67 67 82 79 69 68 84 80 70 69 82 78
DEWPT 69 69 67 66 71 71 67 67 71 71 68 68 71 71 67 67 69 69
RH 90 93100100 74 82100100 69 77 97100 65 74 90 93 65 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B1 B1 SC B1 SC SC SC SC SC SC SC SC SC SC SC SC
POP 12HR 50 30 30 10 10 20 20 20 20
RAIN SHWRS SC SC SC IS SC IS IS IS IS IS IS
TSTMS SC IS SC IS IS 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
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