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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Sat Sep 12 2026
VAZ046-122000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
301 AM EDT Sat Sep 12 2026
Date Sat 09/12/26 Sun 09/13/26 Mon 09/14/26
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 81 69 88 66 84
TEMP 71 70 74 79 80 73 71 71 71 71 79 86 87 78 73 69 68 68 79 81 83 75
DEWPT 71 70 72 73 73 72 71 71 70 70 72 71 70 70 69 69 67 67 68 67 66 64
MAX/MIN RH 78 100 57 100 57
RH 100100 93 82 79 97100100 97 97 79 61 57 76 87100 97 97 69 63 57 69
WIND DIR NE NE E E E SE S S SW SW W NW W W W W W NW N NE NE NE
WIND SPD 3 4 4 4 3 2 2 3 3 4 5 4 4 3 3 2 3 4 8 8 8 6
CLOUDS OV B2 OV B2 B2 OV B2 B2 B1 SC SC SC SC FW FW FW FW SC SC SC SC FW
CLOUDS(%) 91 82 89 71 81 98 87 77 62 50 28 27 28 7 20 20 17 38 41 46 45 23
VSBY 10 10 10 10 6 3 3 7 10 10 10 10 10 10 10 10 10 7 7 7 7 10
POP 12HR 70 80 20 0 20
RAIN SHWRS SC O NM IS IS IS IS IS
TSTMS SC SC IS IS IS
MIX HGT <1 <1 1 2 2 <1 <1 <1 <1 <1 2 5 4 <1 <1 <1 <1 <1 3 3 3 <1
T WIND DIR NE E E SE SE S S SW SW SW W W W W NW W W NW N N N NE
T WIND SPD 3 8 8 9 11 13 12 6 5 12 11 11 10 5 6 3 4 3 14 11 9 16
DISPERSION VP VP VP VP VP VP VP VP VP PR
ADI 2 9 12 19 29 6 6 3 3 13 33 69 47 3 3 2 2 4 58 49 39 7
MAX LVORI 10 8 5 3 3 6 9 9 9 5 3 1 1 4 6 10 9 8 3 1 1 3
STABILITY F D D D C F F F F B B B B G G G G B B B B F
CEILING 400 1600 1400 1800 None None None None None None
STA PRES 29.33 29.26 29.26 29.24 29.24 29.18 29.24 29.27 29.36 29.39
Date Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
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 79 58 85 61 89 64 88
TEMP 62 59 77 71 61 59 82 75 64 62 86 78 67 66 86 77
DEWPT 56 54 60 61 58 58 65 65 61 60 66 66 63 62 66 66
RH 81 83 56 71 90 96 56 71 90 93 51 67 87 87 51 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW FW FW CL FW FW FW CL SC SC FW FW SC
POP 12HR 0 0 0 5 0 5 10 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