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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Jul 29 2026
NCZ006-292000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 AM EDT Wed Jul 29 2026
Date Wed 07/29/26 Thu 07/30/26 Fri 07/31/26
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 65 85 65 87
TEMP 80 85 85 78 72 68 66 67 77 83 84 77 71 67 65 68 81 86 85 79
DEWPT 70 68 67 66 63 62 62 63 65 64 64 66 63 62 61 64 67 67 66 68
MAX/MIN RH 53 89 50 92 50
RH 72 57 55 67 73 81 87 87 67 53 51 69 76 84 87 87 63 53 53 69
WIND DIR NW NW NW NW NW NW NW NW N NW NW N N N N N NE SW N N
WIND SPD 5 6 6 4 3 2 2 2 4 4 2 0 0 0 0 0 2 1 0 0
CLOUDS FW CL FW CL FW FW CL CL CL CL FW FW FW CL CL CL CL FW FW FW
CLOUDS(%) 10 5 12 4 8 16 4 1 2 2 7 12 10 5 4 2 4 18 17 22
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 3 6 6 <1 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR NW NW NW NW NW NW NW NW NW W NW NW W NW NW N NE N NW W
T WIND SPD 13 11 11 12 8 10 5 10 8 8 9 3 3 5 4 4 3 0 2 1
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 61 74 78 6 4 5 3 11 38 54 58 2 2 3 2 4 14 0 18 1
MAX LVORI 3 1 1 3 3 4 6 5 3 1 1 3 4 5 6 6 2 2 2 4
STABILITY A B B F G G G A A A A G G G G A A A A G
CEILING None None None None None None None None None None
STA PRES 29.12 29.12 29.20 29.23 29.26 29.23 29.29 29.30 29.32 29.28
Date Sat 08/01/26Sun 08/02/26Mon 08/03/26Tue 08/04/26
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 86 69 84 69 83 69 85
TEMP 69 70 85 79 72 71 82 78 72 71 81 77 71 71 83 80
DEWPT 65 68 70 70 69 71 74 73 72 71 75 75 71 71 75 75
RH 87 93 61 74 90100 77 85100100 82 94100100 77 85
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1
POP 12HR 0 10 30 40 60 60 30 40
RAIN SHWRS IS SC SC NM SC SC NM SC IS SC
TSTMS IS SC 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