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
801 PM EDT Thu Aug 6 2026
VAZ046-070800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Thu Aug 6 2026
Date 08/06/26 Fri 08/07/26 Sat 08/08/26 Sun
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 71 90 71 90 70
TEMP 75 73 72 74 83 88 88 80 75 74 72 73 84 90 87 80 75 72 70 73
DEWPT 72 71 70 71 72 71 71 72 72 72 71 72 74 73 73 73 72 71 70 71
MIN/MAX RH 96 55 100 58 100
RH 90 93 93 90 70 57 57 77 90 93 97 97 72 58 63 79 90 97100 93
WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW W
WIND SPD 3 3 3 4 8 9 10 4 5 5 6 6 8 9 9 5 5 4 4 4
WIND GUST 16
CLOUDS SC SC SC SC FW SC SC FW SC SC FW CL FW B1 B1 SC SC SC SC FW
CLOUDS(%) 39 47 36 41 23 32 39 17 37 33 22 5 22 57 59 44 34 29 36 22
VSBY 10 10 8 8 10 10 10 10 10 10 10 10 10 7 7 10 10 10 10 10
POP 12HR 30 10 10 40 5
RAIN SHWRS SC SC
TSTMS SC SC
MIX HGT <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 7 5 <1
T WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW W W W W
T WIND SPD 4 5 5 12 16 19 20 12 5 6 6 14 20 18 13 5
DISPERSION VP VP VP VP PR PR PR PR PR VP VP
ADI 3 4 3 16 61120120 6 3 3 3 18 88 85 56 4
MAX LVORI 6 6 9 5 3 1 1 4 6 6 8 5 3 1 1 4
STABILITY E E F A B B B F F F F B B C C E
CEILING None None None None None None None None None
STA PRES 29.46 29.48 29.49 29.42 29.41 29.38 29.36 29.31
Date 08/09Mon 08/10/26Tue 08/11/26Wed 08/12/26Thu 08/13/26
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 92 70 93 71 94 72 92 70 90
TEMP 90 84 73 72 91 85 74 73 91 85 74 74 90 82 73 72 88 82
DEWPT 70 69 69 68 69 70 69 70 71 70 70 70 72 72 70 70 72 71
RH 52 61 87 87 49 61 84 90 52 61 87 87 56 72 90 93 59 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW FW FW SC FW FW FW SC SC SC SC B1 B1 B1 B1
POP 12HR 10 0 5 10 10 20 30 20 30
RAIN SHWRS IS SC IS SC
TSTMS 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
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