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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Wed Sep 9 2026
VAZ024-100800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
301 PM EDT Wed Sep 9 2026
Date 09/09/26 Thu 09/10/26 Fri 09/11/26 Sat
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 65 92 67 85 66
TEMP 88 77 72 69 67 68 81 90 90 78 73 71 69 69 78 83 81 74 69 68 66 67
DEWPT 67 66 66 65 64 64 68 69 68 68 68 68 68 68 71 71 71 70 69 68 66 67
MIN/MAX RH 90 49 100 65 100
RH 50 69 81 87 90 87 65 50 49 71 84 90 97 97 79 67 72 87100100100100
WIND DIR SW SW SW SW SW SW W W W W W W N N N E E E N N N N
WIND SPD 4 4 3 2 2 2 5 6 5 3 1 1 0 1 1 2 2 1 0 0 0 0
WIND GUST 13 12 17 17
CLOUDS SC FW FW FW FW FW FW SC SC SC SC B1 SC SC B2 B2 B2 B2 B2 B2 B2 B2
CLOUDS(%) 30 22 15 14 11 18 12 30 28 42 46 54 40 45 72 80 80 76 81 83 81 80
VSBY 10 10 10 10 10 10 10 10 10 10 7 7 1 1 7 3 3 6 6 7 7
POP 12HR 0 10 30 70 60
RAIN SHWRS IS SC IS IS IS NM NM NM NM IS IS IS
TSTMS IS IS IS IS IS
Obvis PF PF
MIX HGT 4 <1 <1 <1 <1 <1 4 6 4 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR SW S SW SW SW SW W W W W W W W NW W SE E NE
T WIND SPD 12 6 6 5 5 3 19 16 16 10 6 3 2 1 1 5 10 6
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 65 3 3 3 3 4 84103 72 5 3 2 1 1 3 21 29 3
MAX LVORI 1 3 5 6 6 6 1 1 1 3 5 7 8 10 5 3 3 6
STABILITY B F G G G B B B B F F F G A C C C F
CEILING None None None None None None 2100 1500 1800
STA PRES 28.58 28.54 28.52 28.45 28.47 28.48 28.52 28.49
Date 09/12Sun 09/13/26Mon 09/14/26Tue 09/15/26Wed 09/16/26
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 83 66 89 65 89 65 89 66 93
TEMP 79 73 68 68 86 78 68 67 88 79 68 67 88 79 69 68 91 80
DEWPT 74 73 68 68 72 70 68 67 70 69 66 66 70 70 68 68 71 71
RH 85100100100 63 76100100 55 72 93 97 55 74 97100 52 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B2 B2 B1 B1 SC SC FW SC SC SC SC SC FW FW FW SC
POP 12HR 80 50 40 5 10 5 20 10 30
RAIN SHWRS IS O SC IS SC IS SC
TSTMS SC 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