
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
801 PM EDT Mon Aug 3 2026
VAZ046-040800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Mon Aug 3 2026
Date 08/03/26 Tue 08/04/26 Wed 08/05/26 Thu
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 83 69 84 70
TEMP 73 71 69 69 76 80 79 75 72 71 71 71 77 82 81 77 73 73 72 73
DEWPT 72 70 67 67 68 70 71 72 71 71 70 71 74 75 74 75 73 72 71 72
MIN/MAX RH 99 73 99 78 99
RH 97 97 93 93 76 72 77 90 97100 97100 90 79 79 94100 97 97 97
WIND DIR NE NE NE NE NE NE E E NE NE E SW S S S S S S S SW
WIND SPD 3 4 6 8 8 6 6 3 2 2 2 2 3 5 5 3 3 4 4 6
CLOUDS B2 B2 B2 B2 B2 B2 OV B2 OV B2 B2 B2 B1 B2 B2 B1 B1 B1 B1 B1
CLOUDS(%) 78 76 81 79 80 76 88 86 92 80 87 85 69 73 76 60 56 51 61 55
VSBY 9 7 7 10 10 10 10 9 9 3 2 6 10 10 10 10
POP 12HR 40 40 60 60 20
RAIN SHWRS IS IS SC NM SC SC IS SC SC NM NM IS IS
TSTMS IS SC SC IS IS SC SC IS
Obvis PF
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 4 3 <1
T WIND DIR NE NE NE NE NE E E E NE N NW W W SW S S
T WIND SPD 6 1 4 11 12 10 14 8 8 9 8 6 6 8 11 17
DISPERSION VP VP PR VP VP VP VP VP VP VP VP
ADI 3 1 3 10 34 35 44 4 4 4 4 7 19 30 37 8
MAX LVORI 9 10 6 5 3 3 3 6 9 9 9 8 4 3 3 5
STABILITY F E E C C C C F F F F B B C C F
CEILING 3400 2600 1100 2700 1100 400 1200 4500 None
STA PRES 29.23 29.28 29.33 29.33 29.34 29.35 29.40 29.35
Date 08/06Fri 08/07/26Sat 08/08/26Sun 08/09/26Mon 08/10/26
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 87 70 88 69 88 69 89 70 90
TEMP 85 81 73 72 86 81 71 72 86 81 72 72 86 81 72 72 87 82
DEWPT 74 75 73 72 76 75 71 72 75 75 72 72 74 75 72 72 74 74
RH 70 82100100 72 82100100 70 82100100 68 82100100 65 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC SC SC SC SC SC SC B1 SC SC B1 B1 SC SC SC SC
POP 12HR 30 5 20 20 30 20 30 20 20
RAIN SHWRS SC IS IS SC IS SC IS IS
TSTMS SC IS IS SC IS 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