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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
405 AM EDT Thu Jul 30 2026
VAZ012-302000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
405 AM EDT Thu Jul 30 2026
Date Thu 07/30/26 Fri 07/31/26 Sat 08/01/26
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 76 53 83 59 84
TEMP 56 58 68 73 75 68 59 56 54 59 73 79 82 73 65 62 61 64 76 79 79 72
DEWPT 54 55 55 54 56 55 54 52 51 55 57 56 56 59 58 56 56 59 63 62 63 65
MAX/MIN RH 51 90 41 84 55
RH 93 90 63 51 52 63 83 86 90 87 57 45 41 62 78 81 84 84 64 56 58 79
WIND DIR NW NW NW N N N NW NW NW N N N W SW N N SE SE S S S SE
WIND SPD 5 5 6 6 4 2 1 1 1 0 0 0 1 1 0 0 1 1 3 4 3 3
CLOUDS FW FW CL CL CL CL CL CL FW FW SC FW FW SC B1 B1 B2 B1 B1 B2 B2 B2
CLOUDS(%) 12 10 2 3 4 3 5 3 13 21 27 24 17 37 53 52 70 68 62 80 79 73
VSBY 9 10 10 10 10 10 10 10 9 8 10 7 7 7 7 7 7 7 10 10 10 10
POP 12HR 0 0 0 0 30
RAIN SHWRS SC SC SC SC SC
TSTMS SC SC IS
MIX HGT <1 <1 3 4 5 <1 <1 <1 <1 <1 3 5 6 <1 <1 <1 <1 <1 4 6 5 1
T WIND DIR NW NW NW N N N NW W W W N
T WIND SPD 5 9 13 13 12 10 4 2 3 1 3
DISPERSION PR VP VP VP VP VP VP VP VP VP
ADI 3 10 50 72 73 5 2 1 2 1 15 0 0 0 0 0 0 0 0 0 0 0
MAX LVORI 6 5 1 1 1 3 5 6 7 6 2 2 2 3 4 6 6 6 3 3 3 4
STABILITY F A B B A G G G G A A A A A A A A A A A A A
CEILING None None None None None None None 9700 1600 700
STA PRES 27.24 27.24 27.28 27.29 27.29 0.0 0.0 0.0 0.0 0.0
Date Sun 08/02/26Mon 08/03/26Tue 08/04/26Wed 08/05/26
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 63 77 63 80 63 81 64 82
TEMP 67 66 72 71 66 65 77 72 65 64 77 73 66 66 79 74
DEWPT 64 66 69 68 65 65 69 68 64 64 69 69 65 66 69 69
RH 90100 90 90 97100 76 87 97100 76 87 97100 72 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 OV OV OV B2 B2 B2 B2 B1 B1 B1 B2 SC B1 B1 B2
POP 12HR 70 90 40 60 20 60 20 70
RAIN SHWRS SC SC SC O SC IS NM IS IS NM IS SC NM
TSTMS IS IS SC SC 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