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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Sun Sep 13 2026
NCZ006-140800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
131 AM EDT Sun Sep 13 2026
Date 09/12/26 Sun 09/13/26 Mon 09/14/26 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 90 68 88 58
TEMP 72 72 71 81 88 90 82 74 72 69 70 84 87 85 76 69 65 60 60
DEWPT 72 71 71 75 73 72 72 72 69 68 67 69 68 67 65 61 57 53 53
MIN/MAX RH 100 57 95 52 81
RH 100 97100 82 61 56 72 93 90 97 90 61 53 55 69 76 75 78 78
WIND DIR SW SW SW W NW W W N N NW NW N N NE NE E NE NE NE
WIND SPD 1 1 2 4 3 3 1 0 0 1 2 6 8 6 4 3 2 2 2
CLOUDS OV B2 B1 SC FW SC SC FW FW SC CL FW SC SC FW FW FW SC SC
CLOUDS(%) 89 70 69 37 22 40 31 20 6 28 0 16 32 31 18 17 21 40 35
VSBY 6 6 5 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 5 5 10 0
RAIN SHWRS SC SC
Obvis PF PF PF
MIX HGT <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR S S SW W W W SW SW NW NW W N N N N
T WIND SPD 5 4 11 6 6 5 2 3 4 4 4 16 11 12 9
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 2 9 24 41 35 1 2 2 2 5 80 64 67 4
MAX LVORI 9 9 8 3 1 1 3 7 6 6 6 1 1 1 3
STABILITY F F C B B B G G G G B B B B F
CEILING 2100 None None None None None None None
STA PRES 29.33 29.34 29.27 29.32 29.35 29.40 29.42
Date 09/15Wed 09/16/26Thu 09/17/26Fri 09/18/26Sat 09/19/26
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 84 57 86 58 89 62 92 64 87
TEMP 81 75 61 58 84 76 63 60 87 79 66 64 90 81 69 65 85 79
DEWPT 55 58 58 58 61 61 60 60 62 62 61 61 65 65 65 65 66 65
RH 41 55 90100 46 60 90100 43 56 84 90 44 58 87100 53 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW CL FW CL CL CL FW CL FW FW SC SC SC SC
POP 12HR 0 0 0 0 5 5 20 20 20
RAIN SHWRS 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