
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
601 AM EDT Fri Aug 7 2026
VAZ046-072000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
601 AM 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 90 71 90 71 91
TEMP 72 83 88 88 81 76 74 73 73 83 89 87 80 76 73 72 73 83 89 90 84
DEWPT 71 74 73 73 73 72 72 71 72 74 73 73 73 72 72 70 71 74 72 71 72
MAX/MIN RH 58 96 59 97 54
RH 97 74 61 61 77 87 93 93 97 74 59 63 79 87 97 93 93 74 57 54 67
WIND DIR SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW SW W W W S
WIND SPD 5 8 9 10 5 5 5 6 6 8 9 10 6 5 5 5 4 4 5 5 3
CLOUDS SC SC SC B2 SC SC SC FW FW SC SC B1 SC SC SC SC FW FW FW SC SC
CLOUDS(%) 27 26 47 70 47 27 26 21 14 27 48 56 47 40 29 31 25 16 22 45 42
VSBY 10 10 7 7 7 10 10 10 10 10 7 7 10 10 10 10 10 10 10 10 10
POP 12HR 30 20 40 5 10
RAIN SHWRS IS IS IS IS SC
TSTMS IS IS IS IS SC
MIX HGT <1 3 5 5 <1 <1 <1 <1 <1 4 7 3 <1 <1 <1 <1 <1 3 6 7 <1
T WIND DIR SW W SW SW SW W SW SW SW W W SW SW SW SW SW W W W SW SW
T WIND SPD 11 11 12 12 10 4 4 4 12 13 14 14 13 17 6 4 10 9 8 8 13
DISPERSION PR PR PR PR PR PR PR PR VP
ADI 11 45 73 51 7 2 2 2 13 62111 52 9 8 3 2 10 37 61 65 6
MAX LVORI 6 3 1 1 4 6 6 6 5 3 1 1 4 5 6 8 5 3 1 1 3
STABILITY A B B C E F F F B B B C E F F F A A A A F
CEILING None None None None None None None None None None
STA PRES 29.47 29.40 29.40 29.40 29.40 29.34 29.35 29.35 29.37 29.31
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 71 93 72 94 72 92 71 91
TEMP 73 73 91 85 75 74 92 85 75 73 89 82 73 72 88 82
DEWPT 70 70 70 71 70 70 72 71 70 70 72 72 70 70 72 72
RH 90 90 50 63 84 87 52 63 84 90 57 72 90 93 59 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC SC SC FW FW SC SC SC B1 SC B1 SC SC
POP 12HR 5 5 5 10 10 40 20 30
RAIN SHWRS SC IS SC
TSTMS 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