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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Sat Sep 5 2026
VAZ012-052000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
631 AM EDT Sat Sep 5 2026
Date Sat 09/05/26 Sun 09/06/26 Mon 09/07/26
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 90 62 81 57 78
TEMP 68 80 86 84 73 67 66 63 63 72 76 75 67 63 61 59 57 67 74 76 69
DEWPT 64 65 63 65 67 66 65 63 63 68 67 67 65 63 60 58 57 62 62 62 60
MAX/MIN RH 43 100 67 100 62
RH 87 60 46 53 81 97 97100100 87 74 76 93100 97 96100 84 66 62 73
WIND DIR NW NW NW NW NW N NW NW N NE NE E E E E E E SE SE SE SE
WIND SPD 2 3 3 3 2 1 1 1 1 1 2 2 2 3 3 3 3 3 3 2 2
CLOUDS SC B1 B1 B1 B2 B1 SC SC B1 B2 B1 B2 B2 B2 B1 B1 B1 B1 B1 SC FW
CLOUDS(%) 35 59 51 59 73 63 36 37 62 73 59 76 74 73 69 63 64 63 54 38 24
VSBY 9 10 10 10 10 10 6 2 4 10 10 10 10 10 10 8 10 10 10 10 10
POP 12HR 40 30 70 30 5
RAIN SHWRS SC SC IS IS IS IS SC NM SC SC
TSTMS SC SC IS IS SC SC
MIX HGT <1 3 5 3 <1 <1 <1 <1 <1 2 3 2 <1 1 <1 1 2 3 4 4 <1
T WIND DIR NW NE NW NW NW NW NW NE E SE SE N E E E E E E E SE E
T WIND SPD 5 9 17 18 5 5 3 1 4 5 1 2 6 10 12 9 10 11 10 8 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 6 39107 76 3 3 2 1 5 16 4 7 3 5 6 4 20 43 55 43 3
MAX LVORI 5 1 1 1 5 8 10 10 9 4 3 3 6 9 6 7 5 4 1 1 3
STABILITY A B B B F F G G B B B B F F F F B B B A G
CEILING None 4300 None None 600 1100 100 100 200 None
STA PRES 27.23 27.19 27.19 27.18 27.24 27.21 27.28 27.33 27.39 27.40
Date Tue 09/08/26Wed 09/09/26Thu 09/10/26Fri 09/11/26
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 53 82 55 87 61 87 59 83
TEMP 57 56 78 71 60 57 82 74 65 63 82 74 64 61 78 70
DEWPT 56 55 61 60 56 55 62 62 59 59 65 63 61 59 60 60
RH 96 96 56 68 87 93 51 66 81 87 56 69 90 93 54 71
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC SC FW FW FW SC FW FW FW B1 B1 SC SC SC
POP 12HR 0 5 0 0 0 30 30 20
RAIN SHWRS SC SC IS IS IS
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