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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Sep 9 2026
VAZ024-100800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
231 AM EDT Wed Sep 9 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 59 90 65 93 67
TEMP 61 62 79 87 88 77 72 69 66 67 83 91 90 78 72 70 68 67
DEWPT 60 61 65 66 65 65 64 64 62 63 67 68 68 68 68 68 68 67
MIN/MAX RH 100 45 87 47 100
RH 97 97 62 50 47 67 76 84 87 87 59 47 49 71 87 93100100
WIND DIR N N SW SW SW SW SW SW SW SW W W W W W W N N
WIND SPD 0 0 2 4 4 4 3 2 2 2 5 6 6 3 2 1 0 1
WIND GUST 14 14 12 16 17 18
CLOUDS SC FW FW SC FW FW SC FW FW FW SC SC SC B1 B1 B1 SC B1
CLOUDS(%) 26 19 18 41 21 20 26 6 7 8 29 33 30 67 67 54 49 53
VSBY 10 10 9 10 10 10 10 10 10 10 7 10 6 6 6 10 10 7
POP 12HR 0 0 0 20 50
RAIN SHWRS IS SC SC IS IS
TSTMS IS IS
MIX HGT <1 <1 2 6 4 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1
T WIND DIR NW NW SW SW SW SW S SW SW SW W W W W NW NW NE E
T WIND SPD 1 1 4 9 10 10 5 5 5 5 13 21 17 9 2 3 1 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 1 1 13 63 52 5 3 3 3 6 62141114 4 1 2 1 2
MAX LVORI 9 8 2 1 1 3 4 5 6 5 1 1 1 3 6 7 10 10
STABILITY G A B B B F G G G B B B B F F F F C
CEILING None None None None None None None 5300 None
STA PRES 28.75 28.74 28.63 28.59 28.54 28.53 28.47 28.48 28.48
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 64 84 66 87 65 89 65 89
TEMP 81 76 67 67 79 74 68 68 84 77 68 67 87 78 69 67 87 79
DEWPT 70 69 67 67 73 72 68 68 72 71 68 67 70 70 67 67 71 70
RH 69 79100100 82 93100100 67 82100100 57 76 93100 59 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC SC SC SC SC FW SC
POP 12HR 60 60 60 40 20 5 10 5 20
RAIN SHWRS NM NM SC SC NM SC IS IS
TSTMS IS IS IS SC 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