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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Wed Aug 26 2026
VAZ046-270800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
131 AM EDT Wed Aug 26 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 58 88 68 89 67
TEMP 63 61 64 79 85 87 79 73 71 68 69 81 86 87 78 71 69 67 69
DEWPT 56 56 58 63 62 63 65 65 66 66 68 70 70 69 70 69 68 67 68
MIN/MAX RH 84 44 95 54 100
RH 78 84 81 58 46 45 62 76 84 93 97 69 59 55 76 93 97100 97
WIND DIR N N NE S S S S S S S S S S S S S SW W W
WIND SPD 0 0 1 5 8 8 3 4 5 4 3 5 8 6 3 2 2 2 2
CLOUDS CL SC SC SC B1 B1 B1 B1 B1 SC B1 B1 B1 SC B1 B1 B1 B1 B1
CLOUDS(%) 5 31 37 31 60 57 52 58 57 42 54 52 60 41 61 61 55 53 63
VSBY 10 10 10 10 10 10 10 10 9 9 9 10 7 7 7 7 7 7 10
POP 12HR 0 0 10 40 40
RAIN SHWRS SC SC SC
TSTMS IS SC IS
MIX HGT <1 <1 <1 4 7 7 <1 <1 <1 <1 <1 3 6 5 <1 <1 <1 <1 <1
T WIND DIR NE N NE SE S S S E SE S S SW SW S S S SW S SW
T WIND SPD 1 2 1 4 10 8 10 4 2 3 13 12 12 12 11 12 10 4 9
DISPERSION VP VP VP VP PR VP VP VP VP VP
ADI 1 1 1 23 48 39 5 3 2 2 14 37 55 71 5 6 5 2 10
MAX LVORI 4 5 5 2 1 1 3 4 5 6 5 3 1 1 4 6 9 9 8
STABILITY G G A A C C F E E E B C C B F F F F B
CEILING None None None 1600 None None None 2900 None
STA PRES 29.40 29.41 29.33 29.32 29.31 29.31 29.25 29.26 29.29
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 87 67 85 67 87 68 92 70 94
TEMP 86 75 68 68 82 77 68 69 85 80 70 70 90 84 73 72 94 83
DEWPT 70 70 68 67 70 69 68 68 70 70 69 69 69 69 68 69 69 70
RH 59 84100 97 67 76100 97 61 72 97 97 50 61 84 90 44 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B2 B2 B1 SC SC SC SC FW FW FW FW FW FW FW SC
POP 12HR 60 40 20 20 10 5 5 5 10
RAIN SHWRS NM SC IS IS IS 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