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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Wed Sep 23 2026
NCZ001-240800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
301 PM EDT Wed Sep 23 2026
Date 09/23/26 Thu 09/24/26 Fri 09/25/26 Sat
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 47 53 43 61 42
TEMP 53 52 53 52 51 49 47 51 52 49 48 46 44 44 52 60 59 49 47 45 43 43
DEWPT 53 52 51 49 49 49 47 51 52 49 47 45 43 41 41 40 41 41 40 38 36 35
MIN/MAX RH 100 91 99 46 78
RH 100100 93 89 93100100100100100 96 96 96 89 66 47 51 74 76 76 76 73
WIND DIR E E E E E NE NE NE NE NE NE NE N N N N N N NW NW NW NW
WIND SPD 8 12 16 17 14 11 5 4 4 5 6 5 5 6 5 6 8 9 6 6 6 6
CLOUDS OV OV OV OV OV OV B2 B2 B1 SC FW CL CL CL CL FW CL FW FW CL FW FW
CLOUDS(%) 91 94 99 93 89 88 85 85 68 33 19 2 2 4 3 6 4 8 10 3 7 10
VSBY 1 1 1 3 2 2 3 8 9 10 10 8 8
POP 12HR 100 50 0 0 0
RAIN L L D D D C C
MIX HGT 1 1 1 1 <1 1 1 2 2 <1 <1 <1 <1 <1 2 3 4 <1
T WIND DIR E E E E E E NE NE NE N NE NE N N N N N N
T WIND SPD 11 12 10 13 11 10 5 6 10 5 3 3 3 4 13 10 11 5
DISPERSION FR GD GD GD PR PR PR PR PR PR PR PR
ADI 17 11 9 12 10 14 8 13 21 3 2 2 2 5 35 43 50 4
MAX LVORI 5 7 6 5 5 5 8 5 5 9 8 8 7 6 3 1 1 3
STABILITY D D D D D D D D D F F F F B B B B E
CEILING 600 600 600 600 None None None None None
STA PRES 26.88 26.87 26.87 26.83 26.85 26.83 26.82 26.79
Date 09/26Sun 09/27/26Mon 09/28/26Tue 09/29/26Wed 09/30/26
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 63 44 63 46 65 49 67 53 67
TEMP 62 53 46 45 60 54 48 47 63 56 51 50 64 58 55 54 64 61
DEWPT 38 42 41 39 42 44 43 42 46 48 46 45 52 53 51 50 58 58
RH 41 66 83 79 51 69 83 83 54 74 83 83 65 83 86 86 81 90
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW FW SC FW FW FW FW FW FW FW SC FW SC SC
POP 12HR 0 0 0 0 0 5 5 0 20
RAIN SHWRS 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