
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
901 AM EDT Mon Aug 3 2026
NCZ003-032000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
901 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 83 68 78 68 81
TEMP 76 81 81 76 71 69 69 69 73 76 77 74 70 69 69 69 74 78 80 76
DEWPT 72 72 72 72 70 69 69 69 71 72 72 71 70 69 69 69 72 73 74 72
MAX/MIN RH 71 100 84 100 81
RH 87 74 74 87 97100100100 93 87 85 90100100100100 93 85 82 87
WIND DIR W S SW NE N NE NE NE NE NE E NE E E E SE S S S S
WIND SPD 2 3 2 1 1 3 5 6 6 5 4 3 3 3 3 3 3 4 4 2
CLOUDS SC B1 B1 SC B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1
CLOUDS(%) 48 67 62 50 64 69 55 58 58 72 71 76 76 70 80 73 70 86 86 53
VSBY 10 10 10 10 10 8 4 9 10 10 7 8 6 6 6 6
POP 12HR 30 30 60 60 80
RAIN SHWRS IS SC SC IS IS IS SC NM NM NM SC SC SC SC O O SC
TSTMS IS SC SC IS IS SC NM SC IS IS SC SC SC
MIX HGT 3 5 4 <1 <1 <1 <1 1 2 2 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR W SW SW W N NE NE E NE E NE NE N N NE E SE SE SE S
T WIND SPD 3 4 8 1 1 2 10 16 14 10 8 5 2 1 2 3 3 5 8 4
DISPERSION VP VP VP PR VP VP VP VP VP
ADI 11 25 42 1 1 1 7 20 36 29 19 3 1 1 1 4 9 19 22 2
MAX LVORI 5 3 3 6 9 10 8 5 4 4 4 6 10 10 10 9 6 4 3 6
STABILITY A B B F F F E C C C C F F F F B B C C F
CEILING 2700 3200 1400 1600 2100 2100 1600 1400 2100
STA PRES 28.79 28.86 28.92 29.00 29.00 29.02 29.03 29.06 29.03
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 68 82 68 82 68 83 68 83
TEMP 70 70 80 76 71 70 80 76 70 69 80 77 70 70 81 77
DEWPT 70 70 74 73 71 70 74 73 70 69 73 72 70 70 73 73
RH 100100 82 90100100 82 90100100 79 85100100 77 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B2 B1 B1 B2 B1 B1 SC SC B1 B1 SC B1 B1
POP 12HR 30 60 30 50 30 50 20 50
RAIN SHWRS SC IS NM SC IS SC SC SC IS SC
TSTMS SC SC IS SC SC 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