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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Mon Aug 24 2026
NCZ005-250800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
231 PM EDT Mon Aug 24 2026
Date 08/24/26 Tue 08/25/26 Wed 08/26/26 Thu
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 60 86 62 88 68
TEMP 86 77 70 65 61 62 75 83 84 75 68 65 62 64 78 85 87 80 72 70 68 70
DEWPT 58 59 54 51 51 52 54 56 56 58 57 57 58 60 67 67 66 67 68 68 68 70
MIN/MAX RH 72 37 88 50 100
RH 39 54 57 60 70 70 48 40 38 55 68 75 87 87 69 55 50 65 87 93100100
WIND DIR W NW N N N N NE NW NW SE SE NE N NE SE S S S S S SW S
WIND SPD 5 2 4 3 3 3 4 2 1 1 1 1 0 1 3 5 5 2 3 2 2 2
CLOUDS FW FW SC FW SC FW SC FW FW FW FW FW FW SC SC SC SC B1 B1 B1 B2 B1
CLOUDS(%) 19 16 33 16 30 25 35 13 6 23 13 23 21 33 35 39 44 63 69 69 70 62
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 7 0
POP 12HR 0 0 0 20 40
RAIN SHWRS IS IS SC SC SC SC SC
TSTMS IS IS SC
MIX HGT 8 <1 <1 <1 <1 <1 3 5 6 <1 <1 <1 <1 <1 4 6 4 <1
T WIND DIR NW NE N N N NE N NW NW E NE N NE N S S S S
T WIND SPD 1 3 11 8 5 10 8 6 4 1 1 1 2 0 8 9 12 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 10 2 5 4 3 10 27 43 31 1 1 1 1 0 41 64 69 2
MAX LVORI 2 2 3 3 3 3 2 1 1 3 4 4 6 6 1 1 1 3
STABILITY A G F G G A A A A G G G G A A A A F
CEILING None None None None None None None None None 9600
STA PRES 29.25 29.31 29.35 29.38 29.33 29.35 29.36 29.36 29.31
Date 08/27Fri 08/28/26Sat 08/29/26Sun 08/30/26Mon 08/31/26
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 86 68 87 67 85 67 87 69 90
TEMP 85 77 70 70 84 78 69 68 83 78 69 70 85 80 71 71 88 82
DEWPT 72 71 69 70 71 70 68 68 71 70 69 69 70 70 69 70 70 70
RH 65 82 97100 65 76 97100 67 76100 97 61 72 93 97 55 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC
POP 12HR 60 40 40 30 20 20 20 5 10
RAIN SHWRS SC NM SC SC SC IS IS IS IS
TSTMS IS SC IS SC 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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