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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EDT Fri Aug 14 2026
NCZ003-150800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
1231 AM EDT Fri Aug 14 2026
Date 08/13/26 Fri 08/14/26 Sat 08/15/26 Sun
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 71 91 72 89 72
TEMP 72 72 73 83 88 87 81 76 74 73 73 81 86 84 79 75 73 72 73
DEWPT 70 69 71 74 74 74 74 73 72 71 72 74 74 74 73 73 72 71 72
MIN/MAX RH 95 61 94 65 98
RH 93 90 93 74 63 65 79 90 93 93 97 79 68 72 82 94 97 97 97
WIND DIR W NW NW NW NW W W W N N NE N N NE NE E NE NE S
WIND SPD 3 3 3 3 4 3 2 3 3 3 3 3 4 3 2 2 2 2 2
CLOUDS B1 B1 SC SC B1 B2 B1 B2 SC SC SC SC B1 B2 B1 B2 B1 B1 SC
CLOUDS(%) 53 56 37 46 61 72 62 84 48 43 49 26 63 76 66 71 55 61 47
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 7 10 10 10 7 8
POP 12HR 5 30 20 60 30
RAIN SHWRS IS SC IS SC SC SC
TSTMS IS SC IS SC SC IS
MIX HGT <1 <1 <1 3 4 3 <1 <1 <1 <1 <1 3 4 3 <1 <1 <1 <1 <1
T WIND DIR W NW NW NW NW NW W W W N W NW NW NW NE NE NE E SE
T WIND SPD 2 2 2 6 13 4 2 2 2 1 1 6 8 5 8 9 5 3 2
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 1 2 25 53 18 1 1 1 1 1 26 30 19 4 4 3 2 2
MAX LVORI 7 7 6 3 1 3 4 7 7 8 7 3 3 3 5 6 9 8 8
STABILITY F F A A C B F F F F A A C B F F F F A
CEILING None None 4300 8600 None None 3000 3800 None
STA PRES 28.97 29.02 28.99 29.01 29.01 29.03 29.00 29.04 29.03
Date 08/16Mon 08/17/26Tue 08/18/26Wed 08/19/26Thu 08/20/26
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 90 73 93 71 88 69 88 70 91
TEMP 87 83 75 74 92 82 73 73 87 79 71 70 85 81 72 72 90 80
DEWPT 74 73 72 71 72 71 71 70 70 69 67 67 70 69 69 69 69 69
RH 65 72 90 90 52 69 93 90 57 72 87 90 61 67 90 90 50 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 FW FW FW SC SC SC SC SC SC SC SC SC SC SC SC SC
POP 12HR 30 5 10 20 10 20 20 10 20
RAIN SHWRS SC IS IS IS IS
TSTMS SC IS 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