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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Mon Sep 14 2026
VAZ018-142000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
931 AM EDT Mon Sep 14 2026
Date Mon 09/14/26 Tue 09/15/26 Wed 09/16/26
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 84 56 82 58 88
TEMP 75 82 81 68 63 61 57 57 70 79 81 71 64 61 59 60 79 87 85 72
DEWPT 65 61 57 56 54 52 50 50 55 61 62 59 57 56 55 56 64 66 66 63
MAX/MIN RH 43 78 54 90 50
RH 71 49 44 65 72 72 77 77 59 54 53 66 78 84 87 87 60 50 53 73
WIND DIR N N NW N NE E E E SE SE SE SE S N N N N E SE SE
WIND SPD 4 4 4 3 2 2 1 2 3 4 4 2 1 0 0 0 0 3 3 1
CLOUDS FW CL FW CL SC FW SC SC SC FW FW FW CL CL CL CL CL FW FW FW
CLOUDS(%) 15 4 11 4 36 11 26 30 36 10 16 22 5 3 2 5 2 15 21 18
VSBY 10 10 10 10 10 9 10 6 9 10 9 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 3 5 5 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 4 4 <1
T WIND DIR NW N N N NE E E SE SE SE SE SE S W W W NW NE E SE
T WIND SPD 13 12 10 3 4 3 5 8 6 4 4 3 3 1 2 2 2 5 4 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 54 75 58 2 2 2 3 8 20 17 17 2 2 1 1 2 5 28 21 2
MAX LVORI 3 1 1 3 3 4 4 4 2 2 2 3 4 6 6 6 3 2 2 3
STABILITY B B B G G G G B B B B G G G G A A B B G
CEILING None None None None None None None None None
STA PRES 27.91 27.97 28.03 28.09 28.06 28.09 28.09 28.11 28.08
Date Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
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 62 89 66 89 65 85 65 84
TEMP 66 64 88 76 69 67 87 76 69 66 83 74 68 66 81 72
DEWPT 60 59 67 65 63 63 69 67 64 63 68 65 63 64 68 66
RH 81 84 50 69 81 87 55 74 84 90 61 74 84 93 65 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC SC FW FW B1 SC SC SC SC SC SC SC B1
POP 12HR 0 10 0 40 20 20 10 50
RAIN SHWRS SC IS IS SC
TSTMS SC 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