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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Sep 16 2026
NCZ006-170800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
231 AM EDT Wed Sep 16 2026
Date 09/15/26 Wed 09/16/26 Thu 09/17/26 Fri
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 56 88 59 94 68
TEMP 59 59 77 86 86 77 69 65 62 63 82 91 92 81 74 71 69 71
DEWPT 59 59 62 64 64 64 63 61 59 60 64 64 65 66 66 65 65 67
MIN/MAX RH 100 47 92 40 90
RH 100100 60 48 48 64 81 87 90 90 55 41 41 60 76 81 87 87
WIND DIR N N S SE E SE N N N N SW S S S SW SW W W
WIND SPD 0 0 1 2 2 1 0 0 0 0 2 2 2 2 1 1 1 1
CLOUDS FW SC FW CL FW CL CL CL CL CL FW CL FW SC SC SC SC SC
CLOUDS(%) 6 28 7 3 6 4 5 4 2 1 6 5 11 38 37 32 26 27
VSBY 9 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 10 5
Obvis PF PF
MIX HGT <1 <1 3 4 4 <1 <1 <1 <1 <1 3 5 6 <1 <1 <1 <1 <1
T WIND DIR SE SE S S SE S S SW SW S S SW SW S SW SW W SW
T WIND SPD 4 2 4 2 1 4 3 2 2 2 4 2 5 4 5 3 3 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 2 15 11 6 2 2 1 1 2 15 12 39 2 3 2 2 2
MAX LVORI 9 9 2 2 2 3 5 6 7 6 2 2 1 3 3 4 6 6
STABILITY G A A B B G G G G A B B B G G G G A
CEILING None None None None None None None None None
STA PRES 29.68 29.72 29.65 29.64 29.61 29.60 29.49 29.47 29.44
Date 09/18Sat 09/19/26Sun 09/20/26Mon 09/21/26Tue 09/22/26
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 93 66 85 65 90 66 89 65 84
TEMP 92 79 71 66 83 79 69 66 88 81 71 68 87 79 69 67 81 77
DEWPT 71 72 69 65 67 67 66 66 69 69 68 68 70 70 69 67 71 70
RH 51 79 93 97 59 67 90100 54 67 90100 57 74100100 72 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B2 B2 B1 B1 B1 B1 SC B1 SC SC SC SC B1 B1 B1 B1 B1
POP 12HR 60 60 20 10 20 20 30 50 50
RAIN SHWRS NM NM IS IS IS IS SC SC IS SC SC
TSTMS SC SC IS IS IS 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