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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Sat Jul 25 2026
NCZ003-260800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
131 AM EDT Sat Jul 25 2026
Date 07/24/26 Sat 07/25/26 Sun 07/26/26 Mon
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 64 77 62 84 63
TEMP 66 65 65 69 73 77 73 68 66 64 65 75 81 83 78 70 66 64 67
DEWPT 66 65 65 69 70 70 69 68 66 64 65 68 67 68 70 68 66 64 66
MIN/MAX RH 100 81 100 59 100
RH 100100100100 90 79 87100100100100 79 63 61 76 93100100 97
WIND DIR NE NE NE NE E E E N NW NW NW NW NW NW W W NW NW NW
WIND SPD 3 3 4 3 4 2 2 0 1 2 3 3 3 2 1 2 3 3 3
CLOUDS OV OV B2 B2 B1 B1 SC B1 SC B1 SC FW FW SC FW FW FW FW FW
CLOUDS(%) 88 89 83 85 55 58 46 65 45 61 32 10 23 30 24 17 22 17 24
VSBY 4 4 4 10 7 7 10 9 7 8 6 7 7 7 7 10 10 10
POP 12HR 80 40 20 5 5
RAIN L L C
RAIN SHWRS IS SC IS
TSTMS IS IS
MIX HGT <1 <1 <1 1 3 2 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR E E NE NE NE NE E E N W W N NW NW SE
T WIND SPD 5 4 4 5 5 4 4 4 1 2 2 8 5 5 1
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 2 5 11 17 14 2 2 1 1 2 37 37 33 1
MAX LVORI 9 9 9 7 4 4 6 9 10 10 9 3 1 1 4
STABILITY F F C B C B F F F F A A A A G
CEILING 500 600 None None None None None None
STA PRES 29.02 29.03 28.97 28.96 28.93 28.90 28.85
Date 07/27Tue 07/28/26Wed 07/29/26Thu 07/30/26Fri 07/31/26
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 67 86 68 85 65 83 65 84
TEMP 84 80 70 69 83 79 70 69 82 78 67 67 81 77 67 67 82 78
DEWPT 69 71 69 69 73 72 70 69 69 69 65 65 67 69 66 66 69 70
RH 61 74 97100 72 79100100 65 74 93 93 63 76 97 97 65 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC B1 B1 SC FW FW FW FW FW SC FW FW FW SC
POP 12HR 5 10 30 40 10 10 10 5 20
RAIN SHWRS SC SC IS
TSTMS SC SC 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