
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
307 PM EDT Sat Aug 8 2026
VAZ018-090800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
307 PM EDT Sat Aug 8 2026
Date 08/08/26 Sun 08/09/26 Mon 08/10/26 Tue
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 88 68 89 69
TEMP 85 76 73 71 69 71 82 87 87 77 73 71 69 70 82 87 89 80 74 71 69 71
DEWPT 70 69 67 67 66 68 71 69 68 69 67 66 66 67 70 70 69 69 68 67 67 68
MIN/MAX RH 92 54 90 52 93
RH 61 79 81 87 90 90 69 55 53 76 81 84 90 90 67 57 52 69 82 87 93 90
WIND DIR W W W W W NW NW W W W W W W W W W W W W W W W
WIND SPD 4 3 3 3 3 3 3 3 3 2 2 2 2 3 4 4 5 4 4 4 6 6
WIND GUST 13 14 14 17 23 21
CLOUDS SC SC SC B2 B1 B1 B1 SC SC SC SC SC SC SC B1 SC FW SC SC SC SC SC
CLOUDS(%) 48 48 48 75 51 59 52 50 27 33 39 38 35 31 52 49 19 35 34 27 26 29
VSBY 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 10 5 10 10
RAIN SHWRS IS
TSTMS IS
MIX HGT 3 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR W SW SW W W W W W W W W W NW W W W W SW
T WIND SPD 10 11 5 5 5 5 11 6 8 9 3 3 3 3 8 11 11 10
DISPERSION VP VP VP VP VP VP VP VP VP VP VP PR
ADI 36 5 3 3 3 6 43 29 48 4 2 2 2 3 38 87 73 5
MAX LVORI 3 5 6 6 6 6 3 2 1 4 5 6 7 6 3 1 1 3
STABILITY C F F F F A A C A F F F G A A A A G
CEILING None None None None None None None None None
STA PRES 27.87 27.89 27.91 27.86 27.87 27.88 27.89 27.84
Date 08/11Wed 08/12/26Thu 08/13/26Fri 08/14/26Sat 08/15/26
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 88 69 86 69 85 68 84 66 83
TEMP 86 80 72 70 84 78 71 71 83 77 71 70 81 75 69 67 81 75
DEWPT 71 69 68 68 71 70 68 68 71 69 67 67 69 67 65 64 68 67
RH 61 69 87 93 65 76 90 90 67 76 87 90 67 76 87 90 65 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 SC B1 B1 B1
POP 12HR 20 40 30 50 30 20 40 20 40
RAIN SHWRS IS SC IS SC SC SC IS SC IS SC SC IS IS SC SC
TSTMS IS IS IS SC IS SC SC 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