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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 PM EDT Sat Aug 15 2026
NCZ003-160800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
1001 PM EDT Sat Aug 15 2026
Date 08/15/26 Sun 08/16/26 Mon 08/17/26 Tue
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 70 89 71 91 70
TEMP 74 72 71 72 82 87 87 81 76 74 72 74 86 90 88 81 75 72 70 72
DEWPT 72 70 69 72 76 75 75 75 73 70 68 70 74 71 72 72 71 70 69 70
MIN/MAX RH 98 65 91 54 96
RH 93 93 93100 82 68 68 82 90 87 87 87 68 54 59 74 87 93 97 93
WIND DIR W NW W N S W SW SW W W W W W W NW NW NW NW NW N
WIND SPD 2 2 2 0 2 3 3 1 1 1 2 2 5 5 5 3 2 2 2 3
CLOUDS SC B1 SC SC SC B2 SC FW FW SC SC B1 FW B1 B1 SC SC SC SC SC
CLOUDS(%) 39 62 40 30 33 73 48 7 9 27 26 58 21 55 55 39 46 42 29 32
VSBY 9 8 5 6 10 10 10 10 10 10 10 10 10 10 10 6 10 10 10
POP 12HR 40 20 10 30 10
RAIN SHWRS IS IS SC SC
TSTMS IS IS SC SC
Obvis PF PF
MIX HGT <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 4 6 4 <1
T WIND DIR N NE E S W SW SW S SW W NW NW NW NW NW NW
T WIND SPD 1 1 2 2 5 5 6 3 4 4 6 11 13 14 12 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 2 18 32 26 2 2 2 3 11 69 66 50 3
MAX LVORI 9 10 10 9 3 3 3 5 6 6 6 5 1 1 1 4
STABILITY F G F A A A A G G G G A A C C G
CEILING None None None None None None None None
STA PRES 28.23 28.21 28.12 28.09 28.07 28.09 28.05
Date 08/18Wed 08/19/26Thu 08/20/26Fri 08/21/26Sat 08/22/26
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 88 65 88 68 88 66 83 64 82
TEMP 85 82 69 68 86 82 71 70 85 80 68 69 80 76 67 66 79 75
DEWPT 69 68 64 64 67 69 65 66 69 68 65 65 66 66 63 64 66 66
RH 59 63 84 87 53 65 81 87 59 67 90 87 62 71 87 93 64 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW FW SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1
POP 12HR 10 0 5 10 40 30 50 50 40
RAIN SHWRS IS SC SC SC IS SC SC IS SC SC
TSTMS 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