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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Tue Sep 15 2026
VAZ018-152000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Tue Sep 15 2026
Date Tue 09/15/26 Wed 09/16/26 Thu 09/17/26
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 81 58 88 63 90
TEMP 68 77 80 70 63 61 59 59 77 86 85 72 68 66 64 65 82 89 85 74
DEWPT 54 60 61 59 56 56 55 56 64 65 64 62 59 59 58 59 66 67 68 66
MAX/MIN RH 54 90 48 84 49
RH 61 56 52 68 78 84 87 90 64 50 50 71 73 78 81 81 58 48 57 76
WIND DIR SE SE SE SE S W N N N E SE SE N N N W W W NW W
WIND SPD 3 4 4 2 1 1 0 0 0 3 3 1 0 0 0 1 1 2 2 1
CLOUDS SC SC FW CL FW FW FW FW CL FW FW CL FW FW FW FW FW B1 B1 SC
CLOUDS(%) 36 35 13 3 12 16 10 19 5 11 16 4 13 11 10 13 13 51 51 40
VSBY 10 10 10 10 10 9 6 4 9 10 9 10 10 10 10 0 10 10 10 10
POP 12HR 0 0 0 0 30
RAIN SHWRS SC SC
TSTMS IS IS
MIX HGT 2 3 3 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1 2 5 3 <1
T WIND DIR SE S SE SE S SW W W W NE NE SE S SW W W N NW NW W
T WIND SPD 8 5 5 4 2 2 2 2 2 3 1 6 3 2 2 2 8 4 4 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 22 21 22 3 3 2 1 1 6 19 15 2
MAX LVORI 2 2 2 3 4 5 5 5 3 2 2 3
STABILITY B B B G G G G A A B B G
CEILING None None None None None None None None None None
STA PRES 28.11 28.08 28.11 28.11 28.14 28.10
Date Fri 09/18/26Sat 09/19/26Sun 09/20/26Mon 09/21/26
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 89 66 81 66 87 65 82
TEMP 69 68 88 75 69 66 79 72 68 67 84 74 69 66 78 70
DEWPT 64 64 70 69 66 64 68 66 64 65 69 67 65 64 69 65
RH 84 87 55 82 90 93 69 81 87 93 61 79 87 93 74 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW SC B2 B1 B1 B1 B1 B1 SC SC B1 SC SC B1 B2
POP 12HR 0 60 40 20 10 40 20 60
RAIN SHWRS NM SC IS SC IS SC NM
TSTMS SC 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