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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sun Sep 13 2026
VAZ018-140800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 PM EDT Sun Sep 13 2026
Date 09/13/26 Mon 09/14/26 Tue 09/15/26 Wed
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 66 83 56 81 57
TEMP 83 73 69 68 67 67 77 83 81 67 62 60 57 57 70 79 81 70 63 61 58 59
DEWPT 69 66 65 64 64 65 64 61 55 54 53 51 49 49 54 60 61 58 55 54 53 54
MIN/MAX RH 93 41 77 50 86
RH 63 79 87 87 90 93 64 47 41 63 72 72 75 75 57 52 51 66 75 78 83 83
WIND DIR NW NW NW NW NW NW N N N N NE E E SE SE SE SE SE S N N N
WIND SPD 6 5 3 3 4 4 4 5 5 3 2 2 1 1 3 3 4 2 1 0 0 0
WIND GUST 17 18 14 17 16
CLOUDS FW FW FW SC FW SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW CL FW
CLOUDS(%) 25 12 20 46 20 26 7 6 10 19 22 18 9 22 14 12 9 7 7 6 3 6
VSBY 10 10 10 8 5 2 9 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 4 <1 <1 <1 <1 1 4 5 5 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NW NW NW W NW NW N N N N N E E E SE S SE SE
T WIND SPD 17 14 9 4 13 12 17 12 10 4 4 3 3 2 5 3 3 3
DISPERSION PR VP VP VP VP VP VP VP VP VP VP VP
ADI 83 7 4 2 6 19 76 78 57 2 2 2 2 2 18 14 15 2
MAX LVORI 1 4 5 6 5 4 1 1 1 3 3 3 4 4 2 2 2 3
STABILITY B F G F F B B B B G G G G A B B B G
CEILING None None None None None None None None None
STA PRES 27.81 27.83 27.92 27.93 28.00 28.04 28.11 28.07
Date 09/16Thu 09/17/26Fri 09/18/26Sat 09/19/26Sun 09/20/26
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 88 63 89 64 87 65 82 64 84
TEMP 87 75 67 64 87 76 68 66 85 74 69 65 80 71 67 65 81 72
DEWPT 64 62 59 58 65 63 61 61 67 66 64 63 67 64 62 63 68 65
RH 46 64 75 81 48 64 78 84 55 76 84 93 65 79 84 93 65 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL FW FW FW FW B1 SC FW SC B1 SC SC SC B1 SC SC B1 B1
POP 12HR 5 0 30 5 40 20 30 10 50
RAIN SHWRS SC SC IS SC IS SC
TSTMS 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