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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Aug 26 2026
NCZ003-262000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 AM EDT Wed Aug 26 2026
Date Wed 08/26/26 Thu 08/27/26 Fri 08/28/26
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 84 66 85 66 84
TEMP 75 82 82 75 70 68 67 68 79 84 82 75 70 68 66 68 78 82 79 73
DEWPT 63 67 69 69 67 67 65 67 70 70 71 71 69 67 65 67 70 70 71 70
MAX/MIN RH 61 95 63 99 66
RH 66 61 65 82 90 97 93 97 74 63 69 87 97 97 97 97 76 67 77 90
WIND DIR S S S SW N N N N S S S N N N N NW N SE W N
WIND SPD 2 6 5 1 0 0 0 0 1 3 3 0 0 0 0 1 1 2 2 0
CLOUDS SC SC B1 B1 B1 SC B1 B1 B1 B1 B2 B1 B1 B1 B1 B1 B1 B2 B2 B2
CLOUDS(%) 45 48 66 61 66 49 63 57 60 56 71 61 57 65 59 60 62 84 84 73
VSBY 10 10 10 10 10 10 7 8 10 7 7 7 7 7 7 10 10 10 10 10
POP 12HR 30 30 60 30 80
RAIN SHWRS IS IS IS SC SC NM SC SC IS IS O O IS
TSTMS IS IS IS IS SC SC SC IS SC SC IS
MIX HGT 2 4 4 <1 <1 <1 <1 <1 2 4 2 <1 <1 <1 <1 <1 3 4 2 <1
T WIND DIR S S S S SW SW SW SW SW S S S S S SW W N N NE N
T WIND SPD 5 11 11 10 8 2 1 1 6 4 12 11 6 3 2 2 3 3 2 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 17 58 40 5 4 1 1 1 19 21 40 5 3 2 1 2 11 18 6 2
MAX LVORI 3 1 1 4 6 7 8 8 3 2 3 5 8 10 8 8 4 3 4 7
STABILITY A B C F F F F B B B B F F F F B B B B F
CEILING None 2900 2100 5200 None 2000 1600 500 600 2900
STA PRES 28.21 28.15 28.14 28.14 28.14 28.09 28.12 28.13 28.19 28.15
Date Sat 08/29/26Sun 08/30/26Mon 08/31/26Tue 09/01/26
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 65 82 66 84 67 89 68 90
TEMP 67 67 80 74 68 68 82 77 69 69 86 81 71 70 88 82
DEWPT 67 66 70 70 68 68 70 70 68 67 69 70 68 67 69 71
RH 100 97 72 87100100 67 79 97 93 57 69 90 90 54 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 B2 B1 B1 SC B1 SC SC SC FW SC FW FW FW SC
POP 12HR 20 50 20 20 5 10 0 10
RAIN SHWRS IS IS SC IS IS
TSTMS IS SC 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