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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Sat Sep 19 2026
NCZ003-192000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
401 AM EDT Sat Sep 19 2026
Date Sat 09/19/26 Sun 09/20/26 Mon 09/21/26
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 82 66 83 65 85
TEMP 68 70 76 80 81 76 72 70 68 69 76 81 82 75 70 68 66 67 80 83 80 72
DEWPT 67 68 70 70 69 69 68 67 66 67 71 72 71 71 69 67 66 66 72 71 72 70
MAX/MIN RH 68 98 71 100 67
RH 97 93 82 72 67 79 87 90 93 93 85 74 69 87 97 97100 97 77 67 77 93
WIND DIR N E E E E E S S S S S S S S N N NW NW E E E NE
WIND SPD 0 1 3 4 4 2 1 1 1 1 2 3 3 1 0 0 1 1 1 3 3 2
CLOUDS B1 B2 B2 B1 B1 B1 B2 OV B1 B2 B1 B1 OV B1 SC SC SC B1 B1 OV OV B2
CLOUDS(%) 66 76 79 59 54 56 82 91 66 75 64 69 88 51 29 33 37 55 55 91 91 86
VSBY 6 5 7 9 10 8 7 7 10 10 10 6 6 7 10 10 10 10 10 10 10 10
POP 12HR 20 20 50 10 90
RAIN SHWRS IS IS IS IS IS SC SC SC SC O O O
TSTMS SC SC IS SC SC SC
Obvis PF PF
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 3 1 <1
T WIND DIR N N N E E E E SE S S SW SW S SW SW SW W NW W W W NW
T WIND SPD 5 4 4 9 8 6 5 3 1 4 5 4 5 4 4 3 2 3 4 10 6 1
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 4 12 22 19 3 3 2 1 4 13 15 16 2 2 2 1 4 13 34 12 1
MAX LVORI 8 6 4 3 3 5 6 7 8 6 4 3 3 6 8 10 10 9 4 3 4 8
STABILITY F C C D D F F F F C C C C F G G G B C C C F
CEILING 600 None 600 1500 1300 2500 None None 3500 4500
STA PRES 28.19 28.17 28.20 28.16 28.16 28.10 28.09 28.07 28.07 28.02
Date Tue 09/22/26Wed 09/23/26Thu 09/24/26Fri 09/25/26
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 63 72 59 64 57 69 55 71
TEMP 65 63 70 68 62 59 63 62 58 58 67 64 58 56 69 65
DEWPT 65 63 69 66 62 59 63 62 58 58 64 62 58 56 62 60
RH 100100 97 93100100100100100100 90 93100100 78 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 OV B2 B2 B2 B2 B2 B2 B2 B2 B1 SC B1 B1 B1
POP 12HR 80 70 70 50 40 20 20 20
RAIN SHWRS O SC SC NM NM SC SC SC SC SC IS IS IS IS
TSTMS SC IS SC IS 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