
Scattered showers and storms are expected across portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Desert Southwest and Intermountain West. Hot, dry weather and increasing winds will allow elevated wildfire conditions to return to the northern Intermountain West, where air quality issues persist from ongoing fires. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Sun Aug 9 2026
VAZ018-100800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
431 PM EDT Sun Aug 9 2026
Date 08/09/26 Mon 08/10/26 Tue 08/11/26 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 68 90 71 88 68
TEMP 84 77 73 70 69 70 83 87 88 79 75 73 72 72 82 87 85 76 73 71 69 71
DEWPT 68 69 67 66 65 67 70 69 68 68 67 68 68 68 71 71 70 69 68 68 67 68
MIN/MAX RH 90 51 88 58 94
RH 59 76 81 87 87 90 65 55 52 69 76 84 87 87 69 59 61 79 84 90 93 90
WIND DIR W W W W W NW W W W W W W W W W W W W W W W W
WIND SPD 3 2 2 2 2 3 5 5 6 4 5 6 6 6 8 6 6 5 6 5 8 6
WIND GUST 16 17 16 18 21 25 23 23 20 21 20 20 21 26 26
CLOUDS B1 SC B1 SC SC FW FW FW SC SC SC B1 B1 SC SC B1 B1 B1 B1 B1 B1 B1
CLOUDS(%) 67 49 54 39 37 21 19 24 41 42 49 63 64 46 47 65 65 65 65 54 55 57
VSBY 10 10 10 8 5 3 10 10 10 10 10 10 10 10 10 7 7 7
POP 12HR 5 5 20 50 50
RAIN SHWRS SC IS SC SC SC SC IS IS IS
TSTMS SC IS SC SC SC
MIX HGT 4 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 3 3 <1
T WIND DIR W W W W W W W W W W W N W W W W W W
T WIND SPD 11 8 4 3 3 4 12 13 13 12 14 20 9 8 9 17 20 12
DISPERSION VP VP VP VP VP PR PR PR PR PR PR PR
ADI 56 4 2 2 2 4 54 84 80 8 10 14 6 9 31 59 71 8
MAX LVORI 1 4 5 6 7 5 1 1 1 3 4 4 5 5 3 1 1 4
STABILITY B F F G G A A A B E E E E B B C C E
CEILING None None None None None 14300 8400 600 23000
STA PRES 27.86 27.89 27.88 27.82 27.89 27.84 27.84 27.75
Date 08/12Thu 08/13/26Fri 08/14/26Sat 08/15/26Sun 08/16/26
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 86 69 86 68 82 66 83 67 84
TEMP 85 77 71 71 84 78 71 69 80 74 68 68 80 75 69 69 81 75
DEWPT 71 69 68 68 71 70 68 68 70 68 66 65 69 68 66 66 70 69
RH 63 76 90 90 65 76 90 97 72 82 93 90 69 79 90 90 69 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 B1 B1 SC B1 B1 B2 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 40 40 20 20 50 40 40 40 40
RAIN SHWRS IS SC SC IS IS IS SC SC SC SC SC SC SC SC SC SC
TSTMS IS SC IS IS SC 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