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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
258 AM EDT Sun Sep 13 2026
NCZ003-140800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
258 AM EDT Sun Sep 13 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 68 88 67 87 62
TEMP 69 69 78 85 87 80 72 69 67 68 79 84 86 77 70 67 64 63
DEWPT 69 69 71 69 69 69 67 66 65 65 68 67 66 65 63 61 57 55
MIN/MAX RH 100 55 92 52 83
RH 100100 79 59 55 69 84 90 93 90 69 57 51 67 78 81 78 75
WIND DIR W W NW NW NW NW NW NW NW N N N N N NE E NE NE
WIND SPD 3 3 4 4 3 4 4 4 4 4 5 5 4 4 6 8 8 5
CLOUDS B1 B1 FW FW FW FW FW FW FW FW SC FW SC FW SC SC B1 B1
CLOUDS(%) 67 52 24 19 23 20 6 13 18 7 26 23 29 24 38 46 55 52
VSBY 4 4 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 5 0 5 0
RAIN SHWRS
TSTMS
MIX HGT <1 <1 3 5 5 <1 <1 <1 <1 <1 4 6 7 <1 <1 <1 <1 <1
T WIND DIR W NW NW NW W W NW NW NW NW N N N N N E NE NE
T WIND SPD 2 2 4 9 8 2 9 3 3 3 14 13 11 6 5 9 11 13
DISPERSION VP VP VP VP VP VP PR PR PR
ADI 1 2 16 53 50 1 4 2 2 4 66 88 82 3 3 8 10 15
MAX LVORI 10 10 4 1 1 3 5 7 7 6 1 1 1 3 5 4 4 4
STABILITY F C B B B F F F F B B B B F F D D D
CEILING 400 None None None None None None None None
STA PRES 28.90 28.94 28.88 28.94 28.95 29.01 29.02 29.10 29.17
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 82 59 85 62 87 64 89 65 86
TEMP 78 73 62 61 83 76 65 63 85 77 67 65 86 78 68 66 83 76
DEWPT 59 62 58 57 64 64 60 59 62 62 59 59 65 66 64 63 66 67
RH 52 68 87 87 53 66 84 87 46 60 75 81 50 67 87 90 57 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW CL CL CL CL CL CL CL CL FW SC SC FW FW B1
POP 12HR 0 0 0 0 0 5 20 20 30
RAIN SHWRS IS IS SC
TSTMS 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