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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat Sep 19 2026
NCZ003-200800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
801 PM EDT Sat Sep 19 2026
Date 09/19/26 Sun 09/20/26 Mon 09/21/26 Tue
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 68 86 67 86 65
TEMP 70 69 68 68 75 82 85 77 70 69 68 67 79 84 81 72 68 67 66 65
DEWPT 68 68 68 68 70 69 69 71 70 69 68 67 70 70 70 70 68 67 66 65
MIN/MAX RH 99 59 100 62 100
RH 93 97100100 84 65 59 82100100100100 74 63 69 93100100100100
WIND DIR E E S S SW SW SW W W W W NW NE SE N NE NE NE NE NE
WIND SPD 2 1 2 2 4 4 3 1 2 2 2 2 3 4 3 5 8 6 6 5
CLOUDS B2 B2 B2 B1 SC B1 B1 B1 B1 SC SC SC FW B2 B2 OV OV B2 OV B2
CLOUDS(%) 77 86 82 67 42 55 55 55 53 41 47 27 25 82 82 88 88 84 90 82
VSBY 10 10 9 7 10 10 10 10 10 7 4 5 10 10 10 10
POP 12HR 30 40 30 70 80
RAIN SHWRS IS IS SC SC SC SC NM NM O O SC SC SC
TSTMS SC SC SC SC SC SC
MIX HGT <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 2 5 1 <1
T WIND DIR E SE S S SW SW SW SW SW W W W E E E NE
T WIND SPD 2 6 8 5 9 6 8 3 3 2 2 2 1 2 9 13
DISPERSION VP VP VP VP VP VP VP PR PR PR PR
ADI 1 3 4 4 24 18 24 2 2 1 1 2 3 13 16 9
MAX LVORI 7 9 9 9 4 2 2 5 10 10 10 9 4 2 3 6
STABILITY F F F C B D C F F F F B B B C E
CEILING 2900 1400 None 3900 None None None 12300 500
STA PRES 28.98 28.97 28.99 28.91 28.91 28.92 28.94 28.90
Date 09/22Wed 09/23/26Thu 09/24/26Fri 09/25/26Sat 09/26/26
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 75 61 67 58 69 55 72 53 73
TEMP 71 67 63 61 65 63 59 58 66 63 57 56 70 64 55 54 70 64
DEWPT 69 67 63 61 64 62 59 58 63 62 57 55 60 59 54 51 56 56
RH 93100100100 97 97100100 90 97100 96 71 84 96 90 61 75
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 OV B2 B2 B2 B2 B2 B1 B1 SC SC SC SC SC SC SC SC
POP 12HR 70 70 50 50 20 10 10 5 5
RAIN SHWRS SC NM NM SC SC SC SC SC IS
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