Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
331 AM EDT Fri Sep 11 2026
VAZ046-112000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
331 AM EDT Fri Sep 11 2026
Date Fri 09/11/26 Sat 09/12/26 Sun 09/13/26
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 86 68 84 67 88
TEMP 71 72 79 85 81 73 70 69 68 69 75 81 82 75 71 70 69 69 79 86 87 79
DEWPT 68 69 70 71 71 71 70 69 68 68 73 74 74 72 71 70 69 69 74 73 72 72
MAX/MIN RH 63 100 73 100 60
RH 90 90 74 63 72 93100100100 97 94 79 77 90100100100100 85 65 61 79
WIND DIR N N NE NE NE NE NE NE NE NE E S SE SE SE SW SW W W NW NW N
WIND SPD 0 0 4 4 5 4 3 2 2 3 3 3 4 2 1 2 3 3 4 3 3 1
CLOUDS SC SC SC B1 B2 B2 B2 B2 OV B2 B2 B2 B2 OV OV B2 B1 B1 SC SC SC FW
CLOUDS(%) 48 46 50 68 73 78 81 87 88 81 87 71 76 89 89 77 64 54 35 33 33 21
VSBY 8 9 10 10 10 8 6 7 6 4 9 6 6 3 3 10 10 10 10 7 7 10
POP 12HR 50 40 70 80 20
RAIN SHWRS IS SC SC SC IS SC O O IS IS
TSTMS IS SC SC IS SC SC IS IS IS
MIX HGT <1 <1 3 4 2 1 <1 <1 <1 <1 1 3 2 <1 <1 <1 <1 <1 2 4 3 <1
T WIND DIR NW NE E NE NE NE E N N NE E SE S NE NE E W W W W W NE
T WIND SPD 2 2 4 4 12 11 8 3 3 8 6 4 4 1 2 2 2 9 10 6 12 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 1 2 17 13 22 8 4 2 2 6 11 14 14 1 1 1 1 7 27 36 53 2
MAX LVORI 7 6 3 2 3 6 9 10 10 8 5 4 4 8 10 10 10 8 4 3 1 4
STABILITY F A B D D E F F F C C C B F F F F C B B B G
CEILING None 1000 400 400 400 9800 1600 300 None None
STA PRES 29.30 29.31 29.34 29.35 29.38 29.33 29.31 29.28 29.30 29.25
Date Mon 09/14/26Tue 09/15/26Wed 09/16/26Thu 09/17/26
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 67 86 62 84 63 88 64 89
TEMP 70 69 84 77 65 63 81 75 65 64 86 78 68 66 87 79
DEWPT 69 68 68 66 62 61 65 65 63 64 68 67 65 65 69 68
RH 97 97 59 69 90 93 58 71 93100 55 69 90 97 55 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC SC SC SC FW FW FW FW FW FW FW SC
POP 12HR 0 5 0 0 0 5 5 20
RAIN SHWRS 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