Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Fri Jul 31 2026
VAZ012-312000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 AM EDT Fri Jul 31 2026
Date Fri 07/31/26 Sat 08/01/26 Sun 08/02/26
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 85 59 83 64 78
TEMP 60 73 79 81 74 65 62 61 64 76 78 79 72 69 68 67 66 71 73 74 70
DEWPT 56 59 57 57 59 57 56 55 58 63 63 65 65 64 64 64 66 69 69 70 68
MAX/MIN RH 42 82 59 99 86
RH 87 62 47 44 59 75 81 81 81 64 60 62 79 84 87 90100 93 87 87 93
WIND DIR N N SW SW W N N SE SE S S S SE S S S S S S S S
WIND SPD 1 0 1 1 1 0 0 1 1 3 4 4 4 4 5 4 3 3 4 3 2
WIND GUST 14 16 16
CLOUDS SC FW SC SC FW SC B1 B2 B2 B2 B1 B1 B1 OV B2 OV B2 OV OV OV B2
CLOUDS(%) 29 21 43 37 25 43 55 72 74 76 60 61 60 88 83 89 87 89 88 88 70
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 20 60 80
RAIN SHWRS IS SC SC SC SC O O O O SC
TSTMS IS IS IS IS IS SC SC SC
MIX HGT <1 4 5 6 <1 <1 <1 <1 <1 4 5 5 1 1 <1 1 1 2 2 3 <1
T WIND DIR W E SW W SE S S S S S S S S S S S S S W W W
T WIND SPD 1 1 3 2 2 3 5 4 4 19 25 27 19 23 14 9 14 12 16 16 9
DISPERSION VP VP VP VP VP VP PR VP VP
ADI 1 6 23 16 1 2 3 2 5 86103109 13 15 10 6 23 32 46 53 4
MAX LVORI 6 3 2 2 3 4 4 5 4 1 1 1 4 4 5 6 5 4 4 4 6
STABILITY A A A A G F F F B B C C E E E E B B C B F
CEILING None None None 14400 3800 2400 1000 600 600 2400
STA PRES 27.30 27.25 27.23 27.21 27.19 27.12 27.09 27.05 27.09 27.11
Date Mon 08/03/26Tue 08/04/26Wed 08/05/26Thu 08/06/26
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 62 79 61 81 62 81 63 83
TEMP 66 66 74 72 63 64 76 73 65 64 77 73 65 66 79 74
DEWPT 65 66 69 67 63 64 68 67 64 64 69 68 65 66 68 68
RH 97100 84 84100100 76 81 97100 76 84100100 69 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 B2 SC SC B1 B2 SC SC B1 B2 SC SC SC B2
POP 12HR 50 70 20 70 20 60 20 60
RAIN SHWRS SC IS SC NM IS IS NM IS SC NM IS IS NM
TSTMS SC IS IS SC IS IS SC IS 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