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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
245 PM EDT Wed Sep 23 2026
NCZ003-240800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
245 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 53 62 47 72 47
TEMP 58 56 57 56 55 54 55 59 60 56 53 50 48 47 62 71 69 59 54 50 49 48
DEWPT 56 55 54 53 52 51 54 55 55 53 50 48 46 44 46 44 45 46 44 42 41 42
MIN/MAX RH 100 79 92 37 81
RH 93 96 90 90 90 90 96 87 84 90 89 93 93 89 56 38 42 62 69 74 74 80
WIND DIR NE NE NE NE NE NE NE NE NE NE NE N N N N N NE N N N NW NW
WIND SPD 9 13 14 14 14 12 9 8 8 5 6 6 6 5 5 5 5 3 4 5 6 5
WIND GUST 20 20 18
CLOUDS OV B2 OV B2 B2 B2 B2 B1 SC FW CL CL CL CL CL CL CL CL CL CL FW CL
CLOUDS(%) 92 86 90 79 87 70 77 69 38 23 2 1 0 0 2 4 5 3 5 2 7 3
VSBY 4 5 5 6 7 5 5 10 10 10 10 10 10
POP 12HR 80 40 0 0 0
RAIN L C C C D C S
MIX HGT 2 1 <1 <1 <1 1 2 3 3 <1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR NE NE NE NE NE NE NE NE NE NE NE N N N N NE N NE
T WIND SPD 14 14 16 13 14 14 16 12 13 4 5 5 5 4 10 11 12 2
DISPERSION FR GD GD GD PR PR PR PR VP VP PR PR
ADI 26 13 14 12 13 23 30 30 53 2 3 3 3 5 38 55 68 1
MAX LVORI 4 5 5 5 5 5 4 4 3 6 6 6 6 6 1 1 1 3
STABILITY D D D D D D D D B F F F F B B B B G
CEILING 700 700 600 700 None None None None None None
STA PRES 29.18 29.19 29.18 29.18 29.11 29.13 29.12 29.10 29.03
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 77 50 79 51 78 53 79 56 81
TEMP 77 63 53 51 76 66 55 52 76 66 55 54 77 68 59 57 79 72
DEWPT 46 48 47 46 49 51 49 48 52 55 52 51 57 60 56 56 63 65
RH 33 58 80 83 39 58 80 86 43 68 90 90 50 76 90 96 58 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL FW FW FW FW FW FW FW FW FW CL FW FW FW FW SC
POP 12HR 0 0 0 0 0 5 0 0 10
$$
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