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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Jul 29 2026
VAZ024-292000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Wed Jul 29 2026
Date Wed 07/29/26 Thu 07/30/26 Fri 07/31/26
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 87 61 88 61 90
TEMP 81 86 86 77 68 65 61 64 78 86 88 80 70 65 62 65 81 88 89 82
DEWPT 65 63 62 61 62 61 60 60 61 60 60 60 61 60 59 61 64 62 61 64
MAX/MIN RH 45 95 39 93 38
RH 58 46 45 58 81 87 97 87 56 42 39 51 73 84 90 87 56 42 39 55
WIND DIR NW NW NW NW W W W W NW NW NW NW NW NW NW N N SW S SE
WIND SPD 5 6 8 6 2 2 2 2 3 4 4 4 2 1 1 0 0 2 2 1
WIND GUST 19 21 17
CLOUDS FW SC FW CL FW FW CL CL CL FW CL FW CL CL CL CL CL FW FW FW
CLOUDS(%) 8 27 7 3 13 7 4 4 2 10 2 6 5 1 3 4 4 15 12 22
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 4 5 5 <1 <1 <1 <1 <1 3 6 6 <1 <1 <1 <1 <1 5 7 7 <1
T WIND DIR NW NW NW NW NW NW NW NW N NW NW NW NW NW NW NW NW NW NW NE
T WIND SPD 16 13 17 14 9 4 4 9 8 8 10 10 6 3 3 3 3 3 4 4
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 80 85 97 7 4 2 2 9 36 62 81 5 3 2 2 3 20 28 36 2
MAX LVORI 1 1 1 3 4 6 6 5 1 1 1 2 3 5 7 6 2 2 1 3
STABILITY A B B F G G G A A A A F G G G A A A A G
CEILING None None None None None None None None None None
STA PRES 28.28 28.30 28.36 28.38 28.41 28.39 28.46 28.47 28.48 28.44
Date Sat 08/01/26Sun 08/02/26Mon 08/03/26Tue 08/04/26
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 66 88 67 85 68 86 67 88
TEMP 68 69 88 80 71 69 83 79 71 69 84 79 70 70 86 80
DEWPT 63 65 66 67 68 69 71 71 70 69 72 72 70 70 72 72
RH 84 87 48 65 90100 67 77 97100 67 79100100 63 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1
POP 12HR 0 30 50 70 60 60 30 50
RAIN SHWRS SC SC SC SC NM NM SC SC NM SC SC
TSTMS SC IS 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