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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Tue Sep 8 2026
VAZ046-090800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
501 PM EDT Tue Sep 8 2026
Date 09/08/26 Wed 09/09/26 Thu 09/10/26 Fri
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 61 89 67 94 68
TEMP 77 68 65 62 63 79 86 88 78 73 70 68 68 83 91 93 84 75 72 70 69
DEWPT 60 59 58 57 59 62 61 60 61 60 60 59 61 65 66 66 66 67 67 67 68
MIN/MAX RH 86 39 78 41 98
RH 56 73 78 84 87 56 43 39 56 64 71 73 78 55 44 41 55 76 84 90 97
WIND DIR S S SW SW SW SW SW S S S SW SW SW SW W W SW SW W N NE
WIND SPD 3 4 4 4 5 8 8 8 6 8 8 9 8 9 10 10 6 5 3 3 4
WIND GUST 18 19 17
CLOUDS SC FW SC FW FW FW FW SC FW FW CL CL CL CL FW SC B1 B1 B1 B1 B1
CLOUDS(%) 38 22 32 18 12 9 20 27 8 10 5 2 1 2 9 35 57 57 58 61 57
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 5 40
RAIN SHWRS SC SC IS IS
TSTMS IS
MIX HGT <1 <1 <1 <1 <1 3 7 7 <1 <1 <1 <1 <1 3 7 8 <1
T WIND DIR SE S S S S SW SW SW S SW SW SW SW W W W W
T WIND SPD 3 3 4 4 4 12 11 16 6 8 9 8 8 19 17 13 2
DISPERSION VP VP VP VP PR PR PR PR PR PR VP VP
ADI 2 2 2 2 5 46 83117 3 5 6 5 8 68 83 69 2
MAX LVORI 3 3 4 5 5 1 1 1 3 3 3 3 4 1 1 1 2
STABILITY G F F F B B B B F E E E B C C C E
CEILING None None None None None None None None 5100
STA PRES 29.54 29.55 29.54 29.43 29.39 29.36 29.32 29.21
Date 09/11Sat 09/12/26Sun 09/13/26Mon 09/14/26Tue 09/15/26
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 66 84 67 88 68 89 65 89
TEMP 82 77 69 67 79 77 70 69 85 79 70 69 86 79 68 67 87 80
DEWPT 67 67 66 67 72 71 70 69 72 71 69 68 68 67 65 65 68 67
RH 61 71 90100 79 82100100 65 77 97 97 55 67 90 93 53 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC FW FW FW
POP 12HR 30 50 60 50 20 10 10 10 10
RAIN SHWRS SC SC SC SC NM SC IS
TSTMS SC 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
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