A frontal boundary will bring scattered showers and storms to portions of the Central and Eastern U.S. through the end of the week. Meanwhile, dangerous heat will intensify across the Intermountain West and expand into the Central U.S. by early next week. Elevated wildfire conditions will develop across portions of the Northern/Central Plains and air quality issues will persist in the Northwest. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Thu Aug 6 2026
VAZ018-070800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
231 AM EDT Thu Aug 6 2026
Date 08/05/26 Thu 08/06/26 Fri 08/07/26 Sat
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 86 68 86 68
TEMP 69 70 82 86 82 74 71 70 69 70 81 85 82 74 72 70 68 70
DEWPT 67 68 69 69 70 69 68 67 66 68 70 70 69 69 67 67 66 68
MIN/MAX RH 93 56 96 60 94
RH 93 93 65 57 67 84 90 90 90 93 69 61 65 84 84 90 93 93
WIND DIR SW SW SW SW SW SW W W W W W SW SW SW SW W W W
WIND SPD 2 2 2 3 3 2 1 1 1 1 2 3 3 2 2 2 3 3
CLOUDS SC SC SC B2 B2 B2 B2 SC SC SC SC B2 B2 B2 SC FW FW SC
CLOUDS(%) 33 29 29 71 82 83 70 44 26 32 41 77 82 77 34 22 24 30
VSBY 7 4 10 10 10 10 8 8 6 5 10 10 10 10 9 10 10 10
POP 12HR 5 70 30 80 20
RAIN SHWRS NM SC SC SC NM IS IS
TSTMS SC SC SC SC SC IS
Obvis PF
MIX HGT <1 <1 3 5 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1
T WIND DIR SW W W S S SW SW SW W W W SW SW SW SW SW W W
T WIND SPD 3 3 5 8 11 6 8 4 3 4 8 10 12 16 9 4 5 12
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 3 26 47 38 3 4 2 2 4 29 59 44 7 4 2 3 12
MAX LVORI 7 6 3 1 3 5 6 6 7 6 3 1 1 4 5 6 6 5
STABILITY G A A B B F F F G A A B B F G G G A
CEILING None None 3000 3300 None None 3000 None None
STA PRES 27.94 27.98 27.95 27.98 27.98 28.00 27.93 27.93 27.92
Date 08/08Sun 08/09/26Mon 08/10/26Tue 08/11/26Wed 08/12/26
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 86 68 87 68 89 69 88 69 84
TEMP 85 74 70 70 86 78 69 70 87 79 71 71 86 79 72 71 82 75
DEWPT 71 71 67 68 69 69 65 66 68 69 66 68 70 70 68 68 71 70
RH 63 90 90 93 57 74 87 87 53 72 84 90 59 74 87 90 69 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B2 SC SC SC FW FW FW FW FW SC SC SC SC B1 B1 B1 B1
POP 12HR 70 20 10 10 10 5 10 20 50
RAIN SHWRS NM IS IS IS SC
TSTMS 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
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