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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 AM EDT Fri Sep 11 2026
VAZ024-112000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
901 AM EDT Fri Sep 11 2026
Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26
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 83 67 84 66 89
TEMP 79 83 79 73 70 68 67 68 74 81 82 74 70 69 68 68 78 86 88 79
DEWPT 72 71 72 71 69 67 66 67 73 74 73 72 70 69 68 68 73 72 71 71
MAX/MIN RH 68 99 73 100 57
RH 79 67 79 93 97 97 97 97 97 79 74 93100100100100 85 63 57 77
WIND DIR SW SE E E E N N N SE SE SE N N N N W NW W W NW
WIND SPD 1 3 3 1 1 0 0 0 1 3 2 0 0 0 0 1 2 2 2 1
CLOUDS B2 B2 OV B2 OV B1 B2 B2 OV B2 B2 OV OV B2 B1 SC SC SC SC FW
CLOUDS(%) 73 78 91 76 88 69 77 73 90 76 74 95 91 77 61 46 33 40 40 25
VSBY 10 10 10 8 3 1 1 0 5 3 3 4 4 10 10 10 10 7 7 10
POP 12HR 70 40 60 80 20
RAIN SHWRS IS NM NM SC IS IS SC O O IS IS IS IS IS IS
TSTMS IS SC SC IS IS SC SC SC IS IS
Obvis PF PF PF
MIX HGT 3 3 2 <1 <1 <1 <1 <1 1 2 3 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR SW S NE E E E N NE E E SE NW NE N W SW NW NW NW NW
T WIND SPD 2 2 8 3 4 2 2 4 4 5 4 1 1 2 1 3 11 14 12 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 7 8 19 2 2 1 1 4 7 16 14 1 1 1 1 3 34 75 61 2
MAX LVORI 4 3 3 7 9 10 10 9 6 4 4 9 10 10 10 9 4 1 1 4
STABILITY C C C F F F F C C C C F F F F A B B B G
CEILING 2100 300 300 300 300 300 300 None None
STA PRES 28.52 28.55 28.56 28.59 28.55 28.54 28.51 28.52 28.49
Date Mon 09/14/26Tue 09/15/26Wed 09/16/26Thu 09/17/26
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 64 88 62 84 62 90 64 90
TEMP 68 66 87 77 65 63 81 74 65 63 87 78 67 66 88 79
DEWPT 67 66 68 67 62 61 66 66 63 62 69 69 65 65 70 69
RH 97100 53 71 90 93 60 76 93 97 55 74 93 97 55 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC SC SC SC FW FW FW FW SC FW FW B1
POP 12HR 0 10 5 0 0 20 10 30
RAIN SHWRS IS SC
$$
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