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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Thu Jul 30 2026
VAZ018-302000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM 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 77 60 84 63 86
TEMP 76 77 71 65 61 60 63 76 82 84 75 69 66 65 68 79 84 83 75
DEWPT 54 55 56 55 55 55 57 58 56 56 58 56 56 57 58 63 64 65 65
MAX/MIN RH 45 84 38 76 50
RH 46 47 59 70 81 84 81 54 41 38 55 63 70 75 70 58 51 55 71
WIND DIR N N NW NW NW NW NW SE S S SE N N N SE S S S S
WIND SPD 8 9 5 3 2 2 2 1 2 2 1 0 0 0 1 3 6 6 6
WIND GUST 20 13 17 19 21
CLOUDS CL CL CL CL CL CL FW FW SC SC SC SC SC SC B1 B1 B2 B2 B2
CLOUDS(%) 5 2 3 1 1 5 18 18 27 31 46 46 44 34 57 65 73 77 83
VSBY 10 10 10 10 10 9 6 10 10 10 10 10 7 7 7 10 10 10 10
POP 12HR 0 0 0 0 5
RAIN SHWRS IS
TSTMS IS
MIX HGT 5 5 1 <1 <1 <1 <1 4 6 7 <1 <1 <1 <1 <1 4 8 5 2
T WIND DIR N NW NW NW W NW NW N
T WIND SPD 12 12 16 5 3 4 2 1
DISPERSION PR VP VP VP VP VP VP VP PR
ADI 72 75 7 3 2 2 2 6 0 0 0 0 0 0 0 0 0 0 0
MAX LVORI 1 1 3 3 4 5 4 2 2 2 3 4 4 4 4 3 2 3 4
STABILITY B B F G G G A A A A A A A A A A A A A
CEILING None None None None None None None 4700 900
STA PRES 27.74 27.80 27.81 27.81 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 67 78 66 81 66 82 67 85
TEMP 71 69 75 71 70 69 78 72 69 69 79 73 69 70 82 75
DEWPT 65 67 71 69 67 68 71 70 66 67 71 70 66 68 71 70
RH 81 93 87 93 90 97 79 93 90 93 77 90 90 93 69 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 OV OV B2 B2 B1 B2 B1 B1 B1 B2 B1 B1 B1 B1
POP 12HR 50 80 60 60 30 60 20 50
RAIN SHWRS IS SC NM O NM SC SC NM SC SC NM IS SC
TSTMS IS IS SC SC IS SC SC 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