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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Sun Sep 6 2026
VAZ012-070800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
231 PM EDT Sun Sep 6 2026
Date 09/06/26 Mon 09/07/26 Tue 09/08/26 Wed
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 58 77 53 81 54
TEMP 77 72 66 63 61 60 69 74 75 66 60 58 56 56 69 76 79 70 61 58 55 57
DEWPT 65 65 63 61 60 60 63 62 62 61 58 55 54 55 62 62 63 61 59 56 54 55
MIN/MAX RH 100 63 100 56 98
RH 67 79 90 93 97100 81 66 64 84 93 90 93 96 78 62 58 73 93 93 96 93
WIND DIR E E E E E E E SE SE SE SE SE SE SE S S S S S S S S
WIND SPD 5 3 5 5 4 4 4 4 4 2 1 2 1 1 2 2 2 2 1 1 1 1
CLOUDS B1 B1 B2 B2 SC B1 B1 SC SC SC FW FW SC SC SC SC SC FW FW FW FW FW
CLOUDS(%) 65 63 82 71 41 59 51 39 42 33 10 8 43 48 36 37 27 16 18 17 16 17
VSBY 10 10 9 8 6 4 10 10 10 10 10 10 10 0 10 10 10 10 10 10 10
POP 12HR 20 5 0 0 0
RAIN SHWRS SC IS
TSTMS SC
Obvis PF PF
MIX HGT 3 1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 3 4 5 <1
T WIND DIR E E E E E E SE SE SE SE SE SE SE SE S S S SE
T WIND SPD 9 10 5 5 6 12 17 13 8 5 4 3 4 4 11 6 5 6
DISPERSION VP PR PR VP VP VP VP VP VP VP VP VP
ADI 28 5 4 4 5 10 45 57 35 3 2 2 2 4 42 36 34 3
MAX LVORI 3 4 6 6 9 8 3 1 1 5 6 7 8 7 3 1 1 3
STABILITY C F E E E C C A A G G G F A A A A G
CEILING 1600 2300 None None None None None None None None
STA PRES 27.22 27.28 27.32 27.38 27.39 27.44 27.47 27.53 27.50
Date 09/09Thu 09/10/26Fri 09/11/26Sat 09/12/26Sun 09/13/26
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 86 59 86 59 82 56 83 58 85
TEMP 81 74 63 62 81 72 64 60 77 69 60 58 78 71 62 60 80 72
DEWPT 63 63 60 60 66 66 63 60 64 62 59 58 64 63 61 60 65 64
RH 54 69 90 93 60 81 97100 64 78 96100 62 76 97100 60 76
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW B1 B1 B1 B1 B1 SC SC SC B1 SC SC SC B1
POP 12HR 5 0 50 40 40 20 40 10 30
RAIN SHWRS SC SC SC SC IS IS SC SC
TSTMS SC IS IS 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