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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Fri Sep 11 2026
VAZ018-120800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 PM EDT Fri Sep 11 2026
Date 09/11/26 Sat 09/12/26 Sun 09/13/26 Mon
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 67 80 67 85 65
TEMP 77 69 68 68 68 68 75 80 77 70 69 69 68 68 77 84 83 72 69 67 66 66
DEWPT 71 69 67 66 66 68 72 73 73 70 68 68 67 68 72 71 70 67 66 65 64 64
MIN/MAX RH 100 78 100 63 95
RH 82100 97 93 93100 90 79 87100 97 97 97100 85 65 65 84 90 93 93 93
WIND DIR NW E SE SE SE SE SE SE S SE SE SW W NW NW NW NW NW W W NW NW
WIND SPD 3 2 2 2 1 2 2 4 3 1 1 1 2 3 4 3 4 3 3 3 4 4
WIND GUST 14 14
CLOUDS B2 B2 B2 B2 B2 B2 OV B2 OV B2 OV B2 SC SC SC FW FW FW FW FW FW SC
CLOUDS(%) 80 81 76 86 77 79 90 87 89 73 89 70 44 35 40 25 24 14 12 19 19 36
VSBY 6 7 8 3 0 0 10 10 10 9 3 1 1 6 10 10 10 10 10 10 10
POP 12HR 20 80 60 10 0
RAIN SHWRS NM IS IS IS IS SC NM NM SC SC
TSTMS SC IS SC SC IS
Obvis PF PF PF PF PF PF PF
MIX HGT 3 <1 <1 <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR S SE E E E E SE SE SE SE SE S W NW NW NW NW W
T WIND SPD 2 9 9 10 9 4 6 6 5 6 4 4 6 8 13 13 9 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 7 4 4 5 4 4 12 14 12 3 2 2 3 8 48 72 40 2
MAX LVORI 4 9 7 6 6 9 5 4 5 9 8 8 8 8 4 1 1 5
STABILITY C F F F F C C D C F F F F B B B B G
CEILING 1400 800 0 1700 4400 None None None None
STA PRES 27.83 27.84 27.87 27.83 27.83 27.82 27.83 27.79
Date 09/14Tue 09/15/26Wed 09/16/26Thu 09/17/26Fri 09/18/26
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 84 58 79 59 84 62 88 66 82
TEMP 83 72 62 59 75 67 61 60 82 72 65 63 86 75 69 67 80 71
DEWPT 65 61 59 57 63 61 58 58 66 64 61 61 67 65 64 63 67 64
RH 55 68 90 93 66 81 90 93 58 76 87 93 53 71 84 87 65 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW SC SC SC FW FW FW FW FW FW FW SC SC SC B1 B1
POP 12HR 5 0 0 0 5 5 20 20 50
RAIN SHWRS IS IS IS SC SC
TSTMS 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