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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Sep 12 2026
NCZ003-130800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
801 PM EDT Sat Sep 12 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 66 87 66 86 61
TEMP 71 70 68 68 79 85 86 79 71 68 67 68 79 83 85 77 67 65 62 61
DEWPT 71 70 68 68 73 71 71 71 68 67 66 66 68 66 65 63 59 59 57 55
MIN/MAX RH 100 61 97 51 85
RH 100100100100 82 63 61 77 90 97 97 93 69 57 51 62 75 81 84 81
WIND DIR SE N N W NW NW NW NW NW NW NW NW N N N N N NE NE N
WIND SPD 1 0 0 1 4 4 4 3 3 2 3 4 6 6 5 4 2 1 1 0
CLOUDS B2 SC B1 SC FW SC SC FW CL FW FW FW FW SC FW FW FW B1 B1 SC
CLOUDS(%) 84 49 57 43 20 26 27 8 1 14 8 6 25 31 22 11 19 56 60 48
VSBY 9 8 4 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 70 10 0 5 5
RAIN SHWRS SC
TSTMS
Obvis PF
MIX HGT <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 4 5 5 <1
T WIND DIR SW SW W NW NW NW NW NW NW NW NW NW N N N N
T WIND SPD 3 3 2 4 10 9 9 6 6 4 5 13 18 16 14 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 2 2 1 4 37 52 43 3 3 2 3 14 81 93 85 4
MAX LVORI 10 10 10 9 3 1 1 4 6 6 8 5 1 1 1 3
STABILITY F G G A B B B G G G G B B B B F
CEILING 500 None None None None None None None None
STA PRES 28.11 28.11 28.14 28.09 28.13 28.15 28.20 28.22
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 81 59 86 60 88 63 88 64 84
TEMP 78 72 61 61 83 75 64 62 85 77 66 64 86 78 68 66 82 76
DEWPT 59 62 57 57 64 65 60 59 62 62 59 60 66 67 64 63 66 66
RH 52 71 87 87 53 71 87 90 46 60 78 87 51 69 87 90 58 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW FW FW FW CL CL CL CL FW SC B1 SC SC SC B1
POP 12HR 0 0 5 0 5 5 30 20 40
RAIN SHWRS SC IS IS SC
TSTMS 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