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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Fri Aug 28 2026
NCZ003-282000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
301 AM EDT Fri Aug 28 2026
Date Fri 08/28/26 Sat 08/29/26 Sun 08/30/26
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 81 67 84
TEMP 69 69 77 81 83 77 69 67 66 66 72 77 80 75 69 68 68 68 74 80 83 77
DEWPT 66 65 68 68 68 68 67 67 66 66 69 69 69 69 69 68 67 68 70 70 70 70
MAX/MIN RH 61 100 70 100 65
RH 90 87 74 65 61 74 93100100100 90 76 69 82100100 97100 87 72 65 79
WIND DIR NW N N E NE N NE NE NE NE E E E E E E NE NE S S S S
WIND SPD 2 2 2 3 3 4 3 4 4 5 5 5 3 1 1 1 1 1 2 3 2 1
CLOUDS B1 SC SC B1 B2 B1 SC B1 SC B2 B1 B1 B2 SC SC B1 B2 B1 B1 SC SC SC
CLOUDS(%) 62 33 32 59 74 65 47 66 44 72 63 56 73 45 49 56 72 65 57 37 32 26
VSBY 4 3 10 9 9 9 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 20 30 10 20
RAIN SHWRS IS SC IS SC IS IS
TSTMS IS SC SC IS IS
Obvis PF PF
MIX HGT <1 <1 3 5 2 <1 <1 <1 <1 <1 3 4 4 <1 <1 <1 <1 <1 2 4 3 <1
T WIND DIR N NW NW N E NE NE NE NE E E E E E E SE S S SW W SW SW
T WIND SPD 1 1 3 3 3 4 2 3 3 9 13 10 10 9 5 5 6 2 3 4 5 10
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 11 18 9 3 1 2 2 8 42 40 45 4 3 3 3 2 10 24 23 5
MAX LVORI 7 6 3 3 3 4 8 9 9 8 4 3 3 5 9 9 9 9 4 3 3 4
STABILITY F A A B B E F E E C C C B F F F F B B A A G
CEILING None 2500 None None 1700 2200 None 900 None None
STA PRES 28.98 28.94 29.00 29.05 29.10 29.08 29.10 29.12 29.13 29.05
Date Mon 08/31/26Tue 09/01/26Wed 09/02/26Thu 09/03/26
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 89 70 90 71 91 72 92
TEMP 69 69 86 81 72 71 88 82 74 73 89 83 74 73 89 83
DEWPT 69 68 69 69 68 67 68 70 68 68 68 70 68 68 68 69
RH 100 97 57 67 87 87 52 67 82 84 50 65 82 84 50 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW CL CL FW FW FW FW FW FW FW FW B1
POP 12HR 5 0 0 10 5 10 10 30
RAIN SHWRS SC
TSTMS 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