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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 AM EDT Sat Aug 1 2026
VAZ012-020800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
201 AM EDT Sat Aug 1 2026
Date 07/31/26 Sat 08/01/26 Sun 08/02/26 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 59 81 65 80 63
TEMP 61 64 76 80 77 71 69 68 67 66 71 76 79 73 68 66 64 66
DEWPT 56 59 63 62 64 64 64 64 65 66 70 69 70 68 67 66 64 66
MIN/MAX RH 90 55 100 75 100
RH 84 84 64 54 64 79 84 87 93100 97 79 74 84 97100100100
WIND DIR S SE S S S S S SE SE SE SE S S S S SW S S
WIND SPD 1 2 4 4 4 5 6 5 4 3 3 4 3 2 1 1 1 1
WIND GUST 16 18 16
CLOUDS B1 B1 B2 OV OV B2 B2 B2 OV OV OV B2 OV B2 B2 B1 B1 B1
CLOUDS(%) 65 66 86 91 88 78 82 77 92 93 88 85 92 71 71 54 66 62
VSBY 10 10 10 10 10 10 9 7 5 6 7 3 3 6 6 10 10 7
POP 12HR 0 20 60 90 60
RAIN SHWRS IS SC IS SC SC SC SC NM O NM NM IS
TSTMS IS IS IS IS IS IS SC SC SC IS
MIX HGT <1 <1 3 5 3 1 <1 <1 <1 1 2 3 3 1
T WIND DIR S S S S S S S SE S S S SW S S
T WIND SPD 4 4 21 20 21 16 13 6 8 5 10 16 18 16
DISPERSION VP PR PR PR VP VP VP VP VP
ADI 2 4 96 86 75 11 9 5 5 8 23 51 74 7
MAX LVORI 5 5 1 1 1 3 4 5 6 8 5 4 4 5
STABILITY F A A C C E E E E B B C B F
CEILING 4100 17800 1900 700 700 700 1500 700
STA PRES 27.22 27.20 27.15 27.13 27.12 27.14 27.12
Date 08/03Tue 08/04/26Wed 08/05/26Thu 08/06/26Fri 08/07/26
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 81 62 81 62 82 63 84 64 85
TEMP 77 73 64 65 77 73 65 65 78 74 65 66 80 75 66 66 80 75
DEWPT 68 67 64 65 67 67 64 65 67 68 65 66 67 68 65 66 68 68
RH 74 81100100 71 81 97100 69 82100100 65 79 97100 67 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 SC B1 B1 B2 SC SC SC B2 SC SC SC B2 SC SC SC B1
POP 12HR 70 20 60 10 70 10 60 20 50
RAIN SHWRS IS NM IS SC NM IS NM IS NM IS IS SC
TSTMS IS SC IS IS SC SC SC IS 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