
Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >
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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Mon Aug 3 2026
NCZ005-032000-
RAWS 310540
36.38N 79.70W Elev. 858 ft
731 AM EDT Mon Aug 3 2026
Date Mon 08/03/26 Tue 08/04/26 Wed 08/05/26
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 86 68 81 68 84
TEMP 72 78 84 84 78 72 71 70 70 75 78 79 75 71 70 69 71 78 83 81 77
DEWPT 72 74 73 73 73 72 70 70 70 72 73 73 72 71 70 69 71 73 74 74 74
MAX/MIN RH 67 100 81 100 75
RH 100 88 70 70 85100 97100100 90 85 82 90100100100100 85 74 79 90
WIND DIR SW SW SW SW W N NE NE NE NE NE NE NE E SE SE SE S S S S
WIND SPD 4 4 5 4 1 1 1 2 4 6 5 4 2 1 1 1 2 3 5 5 2
CLOUDS B2 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B1 B2 B1 B1 B2 B2 B1
CLOUDS(%) 70 64 51 57 60 61 73 77 81 85 83 78 83 73 66 80 67 65 80 80 55
VSBY 8 10 10 10 10 10 9 7 9 10 10 7 8 6 6 6 6
POP 12HR 30 30 70 60 70
RAIN SHWRS IS SC IS IS IS IS NM NM NM NM SC SC SC SC NM NM SC
TSTMS IS SC IS IS SC SC SC IS IS SC SC SC
MIX HGT 1 3 4 4 <1 <1 <1 <1 <1 2 2 2 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR SW W SW SW SW N NE NE NE NE E E N N E E E SE SE S S
T WIND SPD 8 8 9 8 8 2 4 11 13 10 10 8 2 2 1 1 1 3 4 8 9
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 11 26 36 31 4 1 2 5 16 26 26 20 1 1 1 1 1 10 16 23 4
MAX LVORI 7 4 3 3 6 10 9 9 5 4 4 4 7 10 10 10 10 5 4 3 6
STABILITY C B C C F F F F C C C C F F F F B B C C F
CEILING 4600 3800 4200 2300 2700 2700 2700 1900 1200 2500
STA PRES 29.10 29.09 29.17 29.24 29.31 29.31 29.33 29.34 29.38 29.35
Date Thu 08/06/26Fri 08/07/26Sat 08/08/26Sun 08/09/26
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 69 85 69 86 69 86 69 86
TEMP 71 72 85 80 72 72 84 79 72 72 84 79 72 71 84 80
DEWPT 71 72 75 74 72 72 74 74 71 72 74 73 71 71 73 73
RH 100100 72 82100100 72 85 97100 72 82 97100 70 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 SC B1 SC SC B1 B1 SC SC SC B1 B1 SC B1 B1
POP 12HR 30 40 20 40 20 40 20 40
RAIN SHWRS SC SC IS SC IS SC IS SC
TSTMS SC SC IS SC IS SC 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