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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Sat Aug 15 2026
VAZ018-152000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
631 AM EDT Sat Aug 15 2026
Date Sat 08/15/26 Sun 08/16/26 Mon 08/17/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 86 70 88 71 87
TEMP 71 81 86 82 74 73 71 71 71 81 86 86 77 75 74 73 71 81 86 83 75
DEWPT 69 73 73 74 73 71 70 69 69 73 73 73 71 70 69 68 68 71 71 70 69
MAX/MIN RH 66 96 62 90 61
RH 93 77 65 77 97 93 97 93 93 77 65 65 82 84 84 84 90 72 61 65 82
WIND DIR NW W W NW NW SE S SW SW W W W W W W W W NW NW NW NW
WIND SPD 1 2 3 3 1 1 1 1 2 4 6 6 4 6 8 9 9 8 8 6 5
WIND GUST 14 17 19 16 21 26 26 26 24 21 19 19
CLOUDS B1 B1 B1 B2 B1 B1 B1 B2 B1 B2 B1 FW B1 B1 SC SC SC B1 SC SC SC
CLOUDS(%) 51 63 61 76 58 65 61 82 67 74 67 21 51 51 48 49 49 54 39 31 35
VSBY 3 10 10 10 10 8 4 3 3 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 40 50 30 10
RAIN SHWRS SC SC IS IS SC SC SC SC SC SC IS IS
TSTMS IS IS IS IS IS IS IS IS SC IS
Obvis PF
MIX HGT <1 3 4 3 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 1 3 4 4 1
T WIND DIR NW W NW W E SE SE S S SW W W SW W W W W NW NW NW NW
T WIND SPD 1 3 9 5 2 3 8 3 5 11 24 20 5 8 13 10 13 19 16 14 12
DISPERSION VP VP VP VP VP PR PR PR PR
ADI 1 12 49 23 1 2 4 2 6 33102118 4 5 12 9 23 62 81 73 6
MAX LVORI 7 4 1 3 8 7 8 7 6 3 1 1 5 5 4 5 4 3 1 1 4
STABILITY B B B B F F F F B C C B E E D D B C B B F
CEILING None 3000 2000 400 1000 None None None None None
STA PRES 27.94 27.91 27.91 27.86 27.83 27.75 27.74 27.72 27.73 27.70
Date Tue 08/18/26Wed 08/19/26Thu 08/20/26Fri 08/21/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 67 85 64 88 68 86 64 81
TEMP 69 69 85 74 66 67 86 77 70 70 84 74 67 66 79 71
DEWPT 67 66 66 63 60 61 67 65 64 65 69 65 63 62 65 63
RH 93 90 53 69 81 81 53 67 81 84 61 74 87 87 62 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW FW FW SC SC SC B1 B1 B1 B1 B1
POP 12HR 10 5 5 5 20 40 30 40
RAIN SHWRS IS IS SC SC IS IS 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