
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
131 PM EDT Fri Aug 7 2026
VAZ018-072000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
131 PM EDT Fri Aug 7 2026
Date Fri 08/07/26 Sat 08/08/26 Sun 08/09/26
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 84 67 86 68 87
TEMP 84 82 75 72 70 69 70 81 85 83 75 72 70 69 70 80 86 84 76
DEWPT 71 72 70 68 67 66 68 71 70 71 70 68 67 67 68 71 70 69 69
MAX/MIN RH 64 93 61 94 59
RH 65 72 84 87 90 90 93 72 61 67 84 87 90 93 93 74 59 61 79
WIND DIR W SW W W W W W W W SW SW W W W W W W W W
WIND SPD 3 4 2 2 2 3 3 4 4 4 3 3 3 3 3 3 4 4 2
CLOUDS B2 B1 B1 FW FW FW FW SC B1 B1 B1 SC SC SC SC SC SC SC SC
CLOUDS(%) 80 57 52 22 17 17 17 45 65 66 52 37 32 35 39 32 39 29 34
VSBY 7 7 7 10 10 10 10 10 6 7 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 40 10 10
RAIN SHWRS SC SC IS SC SC
TSTMS SC SC IS SC SC
MIX HGT 3 3 <1 <1 <1 <1 <1 4 5 3 <1 <1 <1 <1 <1 3 5 6 <1
T WIND DIR SW W W W SW W W W W W W W W W W NW W SW SW
T WIND SPD 9 9 2 3 3 3 3 16 13 14 13 6 5 4 4 9 5 4 11
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 39 27 1 2 2 2 3 73 58 45 6 3 3 2 5 37 39 33 5
MAX LVORI 1 3 6 7 7 7 6 3 1 1 4 6 6 6 6 3 1 1 4
STABILITY B C F G G G A A C C F G G G A A A A G
CEILING 4500 None None None 2900 None None None None
STA PRES 27.94 27.93 27.92 27.93 27.88 27.89 27.88 27.91 27.86
Date Mon 08/10/26Tue 08/11/26Wed 08/12/26Thu 08/13/26
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 68 89 69 89 69 86 68 84
TEMP 70 70 89 80 71 71 87 79 72 71 83 76 70 69 81 75
DEWPT 66 66 69 69 67 67 70 69 68 68 71 70 67 67 71 69
RH 87 87 52 69 87 87 57 72 87 90 67 82 90 93 72 82
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC FW SC SC SC B1 B1 B1 B1 B1 B1
POP 12HR 5 10 5 10 30 50 30 50
RAIN SHWRS SC SC SC IS IS SC
TSTMS 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