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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Jul 29 2026
VAZ024-300800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Wed Jul 29 2026
Date 07/29/26 Thu 07/30/26 Fri 07/31/26 Sat
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 60 89 60 91 65
TEMP 67 64 62 65 79 87 88 79 70 65 62 66 82 88 90 80 72 68 66 69
DEWPT 58 60 59 59 59 58 57 57 58 58 57 59 61 59 58 60 61 61 61 63
MIN/MAX RH 90 34 87 34 85
RH 73 87 90 81 50 38 35 47 66 78 84 78 49 38 34 51 68 78 84 81
WIND DIR W W W W NW NW NW N NW NW N N N SW S SE N N N N
WIND SPD 2 2 2 2 3 3 4 4 2 1 0 0 0 2 2 1 0 0 0 0
WIND GUST 18
CLOUDS CL CL CL CL CL FW FW FW FW CL FW CL FW FW FW FW SC SC B1 B1
CLOUDS(%) 3 1 3 4 4 11 7 20 6 1 10 2 7 17 21 18 31 34 53 59
VSBY 10 2 2 10 10 10 10 10 7 7 7 7 7 7 7 7 7 7 7 7
POP 12HR 0 0 0 0 0
RAIN SHWRS SC
Obvis PF PF
MIX HGT <1 <1 <1 1 4 6 6 <1 <1 <1 <1 <1 5 6 7 <1
T WIND DIR NW NW NW NW N N N NW NW NW NW NW SW SW W SE
T WIND SPD 6 5 4 9 14 10 10 9 4 3 3 3 1 4 2 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 3 3 2 14 69 80 78 4 2 2 2 3 7 36 19 1
MAX LVORI 3 5 6 4 1 1 1 2 3 4 5 4 2 1 2 2
STABILITY 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
STA PRES 28.37 28.40 28.43 28.43 28.50 28.51 28.52 28.48
Date 08/01Sun 08/02/26Mon 08/03/26Tue 08/04/26Wed 08/05/26
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 88 67 84 67 84 67 86 68 86
TEMP 87 81 71 70 81 77 71 69 82 78 70 69 84 79 70 70 85 78
DEWPT 65 66 68 69 71 71 71 69 72 72 70 69 72 72 70 70 72 72
RH 48 60 90 97 72 82100100 72 82100100 67 79100100 65 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B2 B2 B2 B2 B1 B2 B2 B1 B1 B1 B1 B1 SC B1 B1
POP 12HR 30 60 70 70 60 30 50 30 50
RAIN SHWRS SC SC SC NM SC NM NM SC SC NM SC IS SC SC IS SC
TSTMS SC 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