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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri Jul 31 2026
VAZ012-010800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
801 PM EDT Fri Jul 31 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 84 64 78 63
TEMP 65 62 60 63 76 80 80 74 70 68 67 66 70 73 76 71 68 67 66 66
DEWPT 55 56 54 58 61 61 63 64 64 64 65 66 70 70 70 68 67 66 65 66
MIN/MAX RH 85 53 100 83 100
RH 70 81 81 84 60 52 56 71 81 87 93100100 90 82 90 97 97 97100
WIND DIR N N SE SE S S S SE SE S SE SE S S S S S SW SW SW
WIND SPD 0 0 1 2 4 5 5 5 5 6 4 3 3 4 3 2 1 1 1 1
WIND GUST 16 17 17
CLOUDS B1 B1 B1 B2 B2 B2 B1 B1 B2 B1 B2 B2 B2 OV OV B1 B2 B1 B2 B2
CLOUDS(%) 61 59 61 73 84 87 61 67 79 69 78 80 87 94 94 69 74 68 83 77
VSBY 10 10 10 10 10 10 10 10 10 7 7 6 9 3 3 6 6 10 10 7
POP 12HR 0 10 70 90 50
RAIN SHWRS IS SC NM NM NM O O SC SC SC
TSTMS IS SC SC SC SC SC SC SC SC
MIX HGT <1 <1 <1 <1 3 5 3 1 <1 <1 <1 1 2 3 3 1
T WIND DIR S S S S S S S S S SE S S S SW S S
T WIND SPD 4 5 4 4 21 20 21 16 13 6 8 5 10 16 18 16
DISPERSION VP VP VP PR PR PR VP VP VP VP VP
ADI 2 3 2 4 96 86 75 11 9 5 5 8 23 51 74 7
MAX LVORI 3 5 5 5 1 1 1 3 4 5 6 8 5 4 4 5
STABILITY F F F A A C C E E E E B B C B F
CEILING None 4100 17800 1900 700 700 700 1500 700
STA PRES 27.25 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 79 61 80 61 82 63 84 64 85
TEMP 75 73 64 64 76 73 65 65 78 74 66 66 80 75 65 66 81 76
DEWPT 68 67 64 64 67 67 64 65 68 67 64 66 68 68 65 66 68 68
RH 79 81100100 74 81 97100 71 79 93100 67 79100100 65 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 SC SC B1 B1 SC SC SC B1 SC SC SC B1 SC SC B1 B1
POP 12HR 60 20 50 10 50 10 50 20 50
RAIN SHWRS SC NM IS IS SC IS SC IS SC IS SC SC
TSTMS SC IS IS SC IS SC IS 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