
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 >
Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Aug 8 2026
VAZ024-082000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Sat Aug 8 2026
Date Sat 08/08/26 Sun 08/09/26 Mon 08/10/26
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 93 69 94 68 95
TEMP 86 92 90 82 76 72 70 72 86 92 93 83 76 71 69 71 87 93 95 87
DEWPT 72 71 71 71 71 70 69 70 72 70 69 70 69 68 67 68 70 68 68 70
MAX/MIN RH 50 97 45 95 41
RH 63 51 54 69 85 93 97 93 63 49 46 65 79 90 93 90 57 44 42 57
WIND DIR W SW SW SW SW SW W W W W SW SW W N N NW W W SW SW
WIND SPD 3 4 4 2 2 1 1 1 2 3 3 2 1 0 0 1 1 3 4 2
CLOUDS SC B1 B1 SC SC SC SC SC B1 B1 SC B1 SC SC SC SC SC SC SC FW
CLOUDS(%) 37 57 55 42 44 41 35 36 51 69 29 53 47 40 37 31 30 30 27 20
VSBY 10 10 10 10 10 10 1 1 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 10 20 5 5
RAIN SHWRS SC SC
TSTMS SC SC
Obvis PF PF
MIX HGT 3 5 3 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR W W SW SW SW W W W W W W SW W NW NW NW W W W SW
T WIND SPD 5 10 11 10 4 3 3 3 8 6 8 6 2 2 3 2 6 9 12 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 24 63 45 5 2 2 2 3 27 43 47 3 1 1 2 2 28 64 92 4
MAX LVORI 2 1 1 3 5 7 8 8 2 1 1 3 5 7 7 6 2 1 1 3
STABILITY A B A F F F G A A B A F F G G A A A A G
CEILING None None None None None None None None None None
STA PRES 28.64 28.58 28.56 28.58 28.60 28.55 28.56 28.57 28.58 28.52
Date Tue 08/11/26Wed 08/12/26Thu 08/13/26Fri 08/14/26
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 70 96 71 93 69 92 69 90
TEMP 73 73 93 86 74 73 91 83 73 71 90 83 73 71 88 82
DEWPT 69 70 70 70 70 70 71 71 70 70 70 70 70 69 70 70
RH 87 90 47 59 87 90 52 67 90 97 52 65 90 93 55 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC B1 B1 B1 B1 SC SC SC B1 B1 B1 B1
POP 12HR 5 10 20 20 20 20 20 40
RAIN SHWRS IS IS IS IS IS SC
TSTMS IS IS IS IS 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