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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Fri Sep 11 2026
NCZ006-120800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 PM EDT Fri Sep 11 2026
Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon
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 69 87 69 89 68
TEMP 73 71 70 71 82 87 84 77 73 72 71 71 80 87 89 81 73 71 69 69
DEWPT 71 70 70 71 75 75 75 74 73 72 71 71 75 74 73 72 72 70 69 69
MIN/MAX RH 100 68 100 59 100
RH 93 97100100 79 68 74 90100100100100 85 65 59 74 97 97100100
WIND DIR E SE SE N SE S S S S S SW SW W NW W N N N N NW
WIND SPD 3 1 1 0 1 4 4 1 1 1 1 2 4 3 3 0 0 0 0 1
CLOUDS B1 B1 B2 OV B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC SC FW FW FW FW
CLOUDS(%) 67 63 77 88 83 83 76 85 86 69 67 57 34 40 40 40 25 10 12 10
VSBY 10 7 4 3 10 10 10 10 6 1 1 3 10 7 7 10 10 10 10
POP 12HR 20 80 70 20 5
RAIN SHWRS IS NM NM SC NM SC IS IS
TSTMS IS SC SC SC IS IS IS
Obvis PF PF PF PF PF PF PF
MIX HGT <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 3 5 3 <1
T WIND DIR E E E E SE S S S E E SW W W NW W S
T WIND SPD 11 8 9 8 9 9 6 1 2 1 3 3 6 5 3 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 5 4 4 6 25 24 11 1 1 1 2 3 22 32 13 2
MAX LVORI 6 8 9 8 3 3 4 7 10 10 10 9 4 1 2 4
STABILITY F F F C C D D F F F F C B B B G
CEILING 1800 600 2100 2900 5900 2100 None None None
STA PRES 29.35 29.39 29.42 29.39 29.38 29.37 29.38 29.31
Date 09/14Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
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 59 83 58 86 60 90 66 90
TEMP 89 80 65 60 80 74 61 59 84 77 63 62 88 82 69 67 88 80
DEWPT 70 67 62 59 62 62 61 59 64 64 63 62 65 64 64 64 66 67
RH 54 65 90 96 54 66100100 51 64100100 47 55 84 90 48 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC SC SC FW FW FW FW FW CL FW FW FW SC SC B1
POP 12HR 5 5 0 0 5 0 5 10 30
RAIN SHWRS SC
TSTMS 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