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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Thu Sep 10 2026
VAZ046-102000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 AM EDT Thu Sep 10 2026
Date Thu 09/10/26 Fri 09/11/26 Sat 09/12/26
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 94 69 86 67 84
TEMP 85 92 91 81 75 72 70 70 80 83 83 76 71 69 68 68 76 81 83 77
DEWPT 68 69 69 69 69 68 67 68 70 70 70 69 68 68 68 68 72 73 73 72
MAX/MIN RH 45 95 61 100 71
RH 57 47 49 67 82 87 90 93 72 65 65 79 90 97100100 87 77 72 85
WIND DIR W W W W W SW W NE NE NE NE NE NE NE NE NE E S SE S
WIND SPD 9 9 10 4 3 2 2 4 6 6 6 5 3 3 3 3 3 3 4 2
CLOUDS FW FW B1 B1 SC SC B1 B1 SC B2 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2
CLOUDS(%) 12 18 57 53 32 44 55 66 50 76 61 61 64 68 79 78 81 79 79 75
VSBY 10 10 10 10 10 9 7 8 10 6 6 6 6 6 6 10 10 10 10 10
POP 12HR 40 20 50 50 70
RAIN SHWRS SC IS SC SC SC SC SC SC SC IS IS NM NM NM
TSTMS IS IS IS IS IS SC SC
MIX HGT 3 6 4 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 1 2 3 2 <1
T WIND DIR W W NW NW NW W NE NE E E E NE SE E E E E S S S
T WIND SPD 14 16 13 8 2 1 4 10 9 9 6 6 12 2 6 6 4 9 9 9
DISPERSION VP VP VP VP PR VP VP VP VP
ADI 51 73 40 5 1 1 2 12 27 24 15 5 6 1 3 8 9 30 20 4
MAX LVORI 1 1 1 3 5 6 6 5 3 2 2 4 6 8 9 8 5 3 3 5
STABILITY C C D E G F F D B D D E F F F C C C D F
CEILING None None None 3800 1800 None 6200 1000 400 2100
STA PRES 29.29 29.23 29.25 29.29 29.35 29.32 29.36 29.36 29.38 29.34
Date Sun 09/13/26Mon 09/14/26Tue 09/15/26Wed 09/16/26
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 68 88 66 88 64 90 66 93
TEMP 70 70 86 79 70 68 85 78 67 66 86 80 70 69 89 81
DEWPT 70 70 72 71 69 68 68 67 64 64 67 67 66 66 69 69
RH 100100 63 77 97100 57 69 90 93 53 65 87 90 52 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 SC SC SC SC SC SC FW FW FW SC FW FW FW B1
POP 12HR 60 20 5 5 5 5 5 30
RAIN SHWRS NM IS SC
TSTMS 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