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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
256 PM EDT Sun Aug 30 2026
VAZ046-310800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
256 PM EDT Sun Aug 30 2026
Date 08/30/26 Mon 08/31/26 Tue 09/01/26 Wed
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 70 94 72 96 74
TEMP 89 81 75 72 70 72 86 92 91 83 77 75 72 74 89 95 95 86 81 77 75 76
DEWPT 67 67 66 66 66 68 69 67 67 68 68 68 67 68 69 67 67 68 67 68 67 68
MIN/MAX RH 88 44 85 38 80
RH 48 63 74 81 87 87 57 44 45 61 74 79 84 82 52 40 40 55 63 74 76 76
WIND DIR SW S S SW SW W NW W W E S SW W W W W NW S SW SW W W
WIND SPD 6 3 3 3 4 3 3 3 3 2 2 2 2 3 4 4 4 2 3 3 3 3
CLOUDS FW FW FW FW CL FW FW SC SC SC FW FW CL FW FW FW FW FW FW FW FW CL
CLOUDS(%) 10 8 7 8 1 7 8 26 43 31 20 10 2 7 7 13 22 15 21 16 7 5
VSBY 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 10 0 0
MIX HGT 6 <1 <1 <1 <1 <1 4 8 7 <1 <1 <1 <1 <1 4 7 6 <1
T WIND DIR SW S S SW SW W NW NW NW E S W W W NW W W W
T WIND SPD 6 3 3 2 2 3 9 5 4 2 1 2 3 4 12 9 9 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 46 2 2 1 1 3 50 53 38 1 1 1 2 4 67 74 70 2
MAX LVORI 1 3 4 5 6 6 1 1 1 3 4 4 5 5 1 1 1 2
STABILITY B G G G F A A A A G G G G A A A A G
CEILING None None None None None None None None None None
STA PRES 29.40 29.41 29.40 29.41 29.35 29.34 29.33 29.33 29.27
Date 09/02Thu 09/03/26Fri 09/04/26Sat 09/05/26Sun 09/06/26
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 98 75 99 73 95 69 88 64 84
TEMP 97 89 78 77 97 87 75 74 93 83 71 70 87 79 67 66 82 77
DEWPT 67 67 67 69 68 69 70 70 69 70 68 67 67 66 64 64 65 63
RH 38 48 69 76 39 55 84 87 46 65 90 90 52 64 90 93 56 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW FW FW FW SC SC SC FW B1 B1 SC SC B1 B1 B1 SC SC
POP 12HR 0 5 10 20 40 30 30 30 20
RAIN SHWRS IS SC SC SC SC IS
TSTMS IS IS IS IS IS
$$
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