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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Mon Sep 14 2026
NCZ001-142000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
931 AM EDT Mon Sep 14 2026
Date Mon 09/14/26 Tue 09/15/26 Wed 09/16/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 74 57 71 57 76
TEMP 67 72 72 64 61 61 59 58 61 68 71 64 61 59 58 58 70 75 73 65
DEWPT 62 60 59 57 56 56 56 54 56 60 61 60 59 58 57 57 61 61 62 61
MAX/MIN RH 64 90 72 97 63
RH 84 66 64 78 84 84 90 86 84 76 71 87 93 96 96 96 73 62 68 87
WIND DIR NW N N N E SE SE SE SE S SE S S S SW W N E SE SE
WIND SPD 10 6 5 4 6 13 11 9 6 5 5 5 4 4 3 3 3 5 5 3
CLOUDS SC FW FW FW SC SC B1 B1 SC FW FW SC FW FW FW CL CL FW FW FW
CLOUDS(%) 44 10 7 23 27 37 52 67 42 22 24 37 20 12 9 5 5 23 16 20
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 5
MIX HGT 2 4 4 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 4 5 3 <1
T WIND DIR NW N N N NE NE E SE SE S S S S S W NW N N NE SE
T WIND SPD 17 13 9 4 2 2 5 8 6 4 2 5 4 4 1 2 13 9 6 5
DISPERSION VP PR FR FR PR VP VP VP VP
ADI 47 66 45 2 1 2 5 10 14 16 7 3 2 2 1 2 60 53 29 3
MAX LVORI 4 1 1 4 5 5 5 5 4 3 3 6 6 8 9 6 3 1 3 6
STABILITY C B B F F D D D B B B F F F G B B B B G
CEILING None None None None None None None None None
STA PRES 26.83 26.87 26.91 26.99 26.96 26.99 27.00 27.03 26.99
Date Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 58 76 61 77 61 74 61 73
TEMP 61 59 75 68 63 62 74 67 63 61 71 66 63 61 70 66
DEWPT 58 56 60 60 58 57 61 62 60 58 62 61 60 60 63 62
RH 90 90 60 76 84 84 64 84 90 90 73 84 90 97 78 87
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW B1 SC FW FW B1 SC FW SC B1 SC FW SC B1
POP 12HR 0 30 5 40 5 40 20 50
RAIN SHWRS IS SC SC IS SC IS IS SC
TSTMS SC SC 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