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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Tue Aug 25 2026
VAZ046-260800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Tue Aug 25 2026
Date 08/25/26 Wed 08/26/26 Thu 08/27/26 Fri
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 89 67 87 68
TEMP 66 63 61 64 80 86 87 78 72 70 69 70 79 85 85 77 72 70 69 70
DEWPT 54 55 54 57 62 63 63 65 65 66 65 67 70 70 69 69 69 68 67 69
MIN/MAX RH 81 44 93 59 97
RH 65 75 78 78 54 46 45 64 79 87 87 90 74 61 59 76 90 93 93 97
WIND DIR SE N N E S S S S S S S S S S S S SW SW SW SW
WIND SPD 1 0 1 1 5 8 8 4 4 5 4 4 6 8 6 3 2 2 2 2
CLOUDS FW FW FW FW SC B1 B1 SC B1 B1 SC B1 SC B1 B2 B2 B2 B2 B2 B2
CLOUDS(%) 25 12 21 15 43 51 57 31 52 54 43 53 48 67 70 78 71 73 77 75
VSBY 10 10 10 10 10 10 10 10 10 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 0 5 30 60 70
RAIN SHWRS IS IS SC NM SC IS IS IS
TSTMS IS SC SC IS
MIX HGT <1 <1 <1 <1 4 7 6 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR SE SW NW N S S SW S S S S S SW SW S S
T WIND SPD 2 1 1 0 6 6 9 13 5 9 4 10 11 9 10 14
DISPERSION VP VP VP VP VP PR VP VP VP VP VP
ADI 1 1 1 0 32 32 42 6 4 6 3 8 35 35 38 7
MAX LVORI 3 4 4 4 1 1 1 3 4 4 6 5 3 1 1 4
STABILITY G G G A A C C F E E E C B C C F
CEILING None None None None None None None 3400 4200
STA PRES 29.39 29.39 29.41 29.33 29.32 29.32 29.31 29.24
Date 08/28Sat 08/29/26Sun 08/30/26Mon 08/31/26Tue 09/01/26
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 84 65 83 65 87 67 92 70 94
TEMP 82 77 68 67 79 75 67 67 83 79 70 70 89 83 73 72 91 84
DEWPT 71 71 68 67 71 70 67 67 71 69 69 69 70 69 69 69 70 69
RH 69 82100100 77 84100100 67 72 97 97 54 63 87 90 50 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B2 B1 B1 B1 B1 SC SC SC SC SC SC SC FW SC
POP 12HR 60 40 40 10 10 5 0 0 10
RAIN SHWRS IS NM SC IS SC SC
TSTMS SC IS 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