
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
VAZ024-070800-
RAWS 441631
37.63N 79.51W Elev. 865 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 69 88 68 92 67
TEMP 72 71 70 71 80 85 86 80 74 72 70 71 85 91 89 81 74 71 68 71
DEWPT 71 70 69 70 71 70 71 71 72 70 69 71 72 70 71 71 71 70 68 70
MIN/MAX RH 98 59 100 51 100
RH 97 97 97 97 74 61 61 74 93 93 97100 65 50 56 72 90 97100 97
WIND DIR N N N W SW SW SW S SW W W W W SW SW SW W W W W
WIND SPD 1 1 0 1 3 4 5 3 1 1 1 1 3 4 4 2 1 1 1 1
CLOUDS B1 B1 SC SC FW B1 B1 B1 SC SC FW SC FW B1 B1 SC SC SC SC SC
CLOUDS(%) 60 53 39 43 22 61 64 59 31 31 11 29 25 69 69 34 39 32 36 34
VSBY 9 8 6 5 10 10 10 10 10 10 10 10 10 6 6 10 10 10 10 10
POP 12HR 20 40 20 50 5
RAIN SHWRS SC SC IS SC SC
TSTMS SC SC IS SC SC
MIX HGT <1 <1 <1 <1 3 5 2 <1 <1 <1 <1 <1 3 6 3 <1
T WIND DIR S S SW SW W SW SW S S SW SW SW W W W W
T WIND SPD 3 6 3 4 6 13 16 10 5 4 3 6 21 13 12 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 3 2 4 26 55 50 5 3 2 2 7 92 60 49 2
MAX LVORI 7 8 10 9 3 1 1 4 6 6 10 8 1 1 1 3
STABILITY F G G A A C B F G G G A A C B G
CEILING 6700 None None 6600 None None None 7500 None
STA PRES 28.67 28.69 28.70 28.63 28.62 28.59 28.59 28.54
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 93 67 95 69 95 70 93 68 91
TEMP 91 85 72 71 92 86 73 72 92 85 73 72 90 84 71 71 89 82
DEWPT 67 68 66 67 67 69 69 69 69 70 69 70 70 70 69 69 70 69
RH 45 57 81 87 44 57 87 90 47 61 87 93 52 63 93 93 54 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC FW FW FW SC SC SC SC B1 B1 B1 B1 B1
POP 12HR 10 0 10 5 20 20 30 20 30
RAIN SHWRS IS IS SC IS IS SC
TSTMS IS IS SC 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