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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon Sep 7 2026
VAZ046-080800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Mon Sep 7 2026
Date 09/07/26 Tue 09/08/26 Wed 09/09/26 Thu
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 59 86 60 88 67
TEMP 66 62 60 62 78 83 85 76 68 64 60 62 79 85 88 79 72 70 67 68
DEWPT 60 60 59 60 62 60 58 58 57 56 56 58 61 60 60 60 60 61 61 62
MIN/MAX RH 98 41 87 38 84
RH 81 93 96 93 58 46 40 54 68 75 87 87 54 43 39 52 66 73 81 81
WIND DIR E SE W W SW S SE S S SW SW SW SW SW SW S SW SW SW SW
WIND SPD 3 1 1 1 3 3 3 2 4 3 3 4 8 9 9 6 8 9 9 8
WIND GUST 18 20 20
CLOUDS FW FW FW FW FW SC SC SC CL SC SC FW FW FW FW CL CL CL CL CL
CLOUDS(%) 7 17 24 18 21 28 35 33 4 26 28 18 13 18 15 3 2 3 4 1
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR NE NE S SW SW S S SE S SW SW SW W SW SW S
T WIND SPD 3 1 1 2 3 2 2 3 4 3 3 3 12 10 12 6
DISPERSION VP VP VP VP VP VP VP PR PR PR PR
ADI 2 1 1 2 17 16 16 2 2 2 2 3 48 66 89 3
MAX LVORI 5 8 10 8 2 2 2 3 3 4 6 6 1 1 1 2
STABILITY G G G A A A A G F G G A B B B F
CEILING None None None None None None None None None
STA PRES 29.50 29.55 29.58 29.54 29.56 29.56 29.53 29.43
Date 09/10Fri 09/11/26Sat 09/12/26Sun 09/13/26Mon 09/14/26
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 93 67 86 65 86 66 88 65 89
TEMP 91 82 71 68 82 76 67 66 82 77 69 68 85 78 68 67 87 78
DEWPT 66 67 67 68 67 67 65 66 70 69 68 68 70 68 66 66 65 64
RH 44 61 87100 61 74 93100 67 76 97100 61 71 93 97 48 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW B1 B1 B1 SC B1 B1 B1 B1 SC SC SC SC FW FW FW FW
POP 12HR 10 40 20 30 50 20 20 10 10
RAIN SHWRS SC SC IS SC IS IS SC IS IS
TSTMS 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