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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Thu Sep 17 2026
VAZ018-180800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
301 PM EDT Thu Sep 17 2026
Date 09/17/26 Fri 09/18/26 Sat 09/19/26 Sun
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 68 87 66 77 64
TEMP 85 75 72 71 70 70 82 87 83 73 70 70 68 67 70 75 77 71 67 67 66 66
DEWPT 67 67 67 67 67 67 70 69 69 69 68 68 66 66 66 67 66 66 64 64 65 65
MIN/MAX RH 91 55 96 69 99
RH 55 76 84 87 90 90 67 55 63 87 93 93 93 97 87 76 69 84 90 90 97 97
WIND DIR NW NW NW NW NW NW NW NW NW N NE E E E E SE SE SE SE SE S S
WIND SPD 4 2 3 3 3 4 4 5 5 2 1 1 2 3 3 3 3 3 2 2 1 1
WIND GUST 16
CLOUDS B1 SC SC FW FW SC SC B1 B1 SC B1 B2 B2 B2 B2 B2 B2 B1 B1 B2 B1 B1
CLOUDS(%) 63 46 28 12 19 26 47 64 59 47 69 78 70 73 84 77 73 62 69 74 64 67
VSBY 7 10 10 10 5 2 7 7 6 7 6 6 6 6 6 6 6 10
POP 12HR 5 40 50 50 5
RAIN SHWRS SC IS SC SC IS SC SC SC SC SC SC SC
TSTMS IS IS SC SC IS IS
MIX HGT 5 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR NW W W W NW NW NW NW NW NE NE NE E E SE S S SE
T WIND SPD 14 4 4 4 6 5 9 13 13 9 4 2 3 6 6 4 5 5
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 45 2 2 2 3 6 36 41 31 4 2 1 2 7 13 10 14 3
MAX LVORI 1 4 5 6 6 5 3 1 1 5 6 7 7 6 5 4 3 5
STABILITY D F G G G B B D D F F F F C C C C F
CEILING None None None 3900 1000 100 1000 1600 1600
STA PRES 27.97 27.92 27.92 27.85 27.88 27.88 27.90 27.86
Date 09/20Mon 09/21/26Tue 09/22/26Wed 09/23/26Thu 09/24/26
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 85 66 83 64 73 57 66 54 69
TEMP 84 74 68 67 80 71 66 64 71 65 61 57 63 59 56 55 66 60
DEWPT 70 69 66 66 70 68 65 64 69 64 60 57 63 59 56 55 62 60
RH 63 84 93 97 72 90 97100 93 97 97100100100100100 87100
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1
POP 12HR 60 20 70 60 70 60 40 30 20
RAIN SHWRS NM IS SC NM NM SC SC NM NM SC SC SC SC IS IS IS
TSTMS SC 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