
A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >
Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Wed Aug 5 2026
VAZ018-052000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
301 AM EDT Wed Aug 5 2026
Date Wed 08/05/26 Thu 08/06/26 Fri 08/07/26
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 81 68 86 67 86
TEMP 68 69 74 79 78 72 70 69 69 70 80 85 82 73 71 70 68 70 80 84 80 73
DEWPT 68 68 69 70 70 69 67 67 66 68 69 67 69 69 69 68 67 68 72 72 72 71
MAX/MIN RH 70 96 55 99 66
RH 100 97 84 74 76 90 90 93 90 93 69 55 65 87 93 93 97 93 77 67 77 93
WIND DIR E SE SE S S S SW W W W SW S SW SW SW SW W W SW SW SW SW
WIND SPD 1 1 2 4 4 2 1 1 1 2 3 4 4 2 1 1 1 1 2 3 3 2
CLOUDS B2 B2 B2 B2 B1 B1 B1 SC FW FW SC B1 B2 SC B1 SC SC SC SC B2 B2 SC
CLOUDS(%) 72 71 72 75 65 63 58 49 20 13 31 68 70 50 51 48 39 48 43 83 83 50
VSBY 2 1 8 10 10 10 7 6 8 7 10 10
POP 12HR 50 10 70 30 70
RAIN SHWRS IS SC SC SC NM SC SC NM NM IS
TSTMS SC SC SC SC SC SC SC IS
Obvis PF PF PF
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR SW W SW S S S S S SW SW SW S S SW SW SW SW W W W S SW
T WIND SPD 2 3 3 6 12 12 9 8 4 6 6 8 16 11 6 5 4 6 11 5 4 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 4 8 22 42 6 4 4 2 7 29 32 48 5 3 3 2 7 31 29 13 2
MAX LVORI 10 9 6 3 3 9 9 8 8 6 3 1 3 6 6 8 9 6 3 3 4 6
STABILITY F B B C C F F F G A A C C F F F G A A B B F
CEILING 500 2900 None None None 3300 None None None 4200
STA PRES 27.90 27.87 27.93 27.95 27.97 27.95 27.98 27.99 28.02 27.98
Date Sat 08/08/26Sun 08/09/26Mon 08/10/26Tue 08/11/26
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 67 85 67 86 68 89 69 88
TEMP 69 69 84 75 70 70 85 77 70 70 86 78 71 71 86 77
DEWPT 67 68 72 71 67 68 70 70 66 67 70 70 67 68 71 70
RH 93 97 67 87 90 93 61 79 87 90 59 76 87 90 61 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B2 B1 SC SC SC SC FW FW SC SC SC SC SC
POP 12HR 20 70 20 10 5 20 10 30
RAIN SHWRS IS NM IS IS SC
TSTMS IS SC 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