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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sat Sep 12 2026
VAZ024-122000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 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 68 87 63 87
TEMP 74 78 80 73 71 70 69 70 79 85 85 77 71 67 66 65 79 85 84 72
DEWPT 71 72 72 71 70 69 69 69 71 70 70 68 67 67 66 65 68 66 65 64
MAX/MIN RH 76 99 59 100 51
RH 90 82 77 93 97 97100 97 77 61 61 74 87100100100 69 53 53 76
WIND DIR E SE SE SE SE S SW W NW NW W W NW W NW NW N N NE NE
WIND SPD 3 4 3 2 1 1 2 2 3 4 3 3 2 1 1 1 2 3 3 2
CLOUDS B2 B2 OV OV B2 B2 SC FW FW SC SC FW FW FW FW SC SC SC SC SC
CLOUDS(%) 83 74 92 99 84 81 37 25 19 27 33 25 23 19 19 30 32 42 41 39
VSBY 7 7 6 3 6 1 1 1 10 10 10 10 10 10 10 10 10 7 7 10
POP 12HR 70 80 10 0 20
RAIN SHWRS IS IS SC O SC IS IS IS
TSTMS IS IS SC SC IS IS
Obvis PF PF PF
MIX HGT 1 2 2 <1 <1 <1 <1 <1 3 5 4 <1 <1 <1 <1 <1 4 4 4 <1
T WIND DIR E SE SE SE SE SW W W W W NW NW NW W NW NW N NW N N
T WIND SPD 6 6 9 9 2 5 5 5 10 12 11 12 5 4 4 4 13 11 11 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 12 14 23 4 1 3 3 6 34 75 60 6 3 2 2 4 59 60 50 2
MAX LVORI 5 4 3 7 10 9 9 6 3 1 1 3 6 9 9 9 1 1 1 4
STABILITY C D C F F F G B B B B G G G G A B B B G
CEILING 300 1100 1100 None None None None None None None
STA PRES 28.55 28.48 28.47 28.45 28.47 28.43 28.49 28.50 28.58 28.61
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 57 81 57 88 60 91 63 89
TEMP 61 58 78 71 61 59 85 76 64 62 88 78 67 64 86 77
DEWPT 58 55 61 62 59 58 67 66 63 61 68 68 64 63 67 66
RH 90 90 56 73 93 96 55 71 97 97 52 71 90 97 53 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW CL SC FW FW CL SC SC SC SC B1
POP 12HR 5 0 0 5 0 20 10 40
RAIN SHWRS 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