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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 AM EDT Sat Sep 19 2026
NCZ006-192000-
RAWS 310801
36.37N 79.29W Elev. 580 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 87 67 86
TEMP 70 71 77 81 81 76 72 70 68 69 78 84 85 78 72 71 69 68 80 85 82 74
DEWPT 69 69 70 69 68 68 67 66 65 66 68 68 68 70 70 69 69 68 72 71 71 69
MAX/MIN RH 63 97 56 100 62
RH 97 93 79 67 65 76 84 87 90 90 71 59 57 76 93 93100100 77 63 69 84
WIND DIR NE NE NE NE NE E E S S S S S S S N N N N NE NE NE NE
WIND SPD 2 4 6 5 5 3 2 1 1 1 2 3 3 2 0 0 0 0 3 5 6 5
CLOUDS B1 B2 B2 SC SC SC SC SC SC SC B1 FW FW FW SC SC SC SC SC B2 B2 B2
CLOUDS(%) 53 75 76 50 40 46 46 46 48 37 55 25 16 16 45 37 38 41 37 73 73 84
VSBY 6 5 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 5 10 10 60
RAIN SHWRS NM NM O
TSTMS SC SC SC
Obvis PF PF
MIX HGT <1 <1 2 3 3 <1 <1 <1 <1 <1 3 5 3 <1 <1 <1 <1 <1 3 4 2 <1
T WIND DIR NE NE E E E E E SE SE S SW SW SW S S S SW SW W W SW W
T WIND SPD 9 10 13 10 10 10 2 4 5 6 9 8 8 4 5 5 5 5 12 8 10 8
DISPERSION VP VP VP VP VP VP VP VP VP PR
ADI 4 11 25 33 41 5 1 2 3 7 28 44 31 2 3 3 3 6 41 22 22 5
MAX LVORI 7 5 3 3 1 4 5 6 6 5 3 1 1 4 6 8 9 9 3 2 3 5
STABILITY F D D B B F F F F A C B B G F G G A B D D E
CEILING 1100 None None None None None None None None 4700
STA PRES 29.42 29.40 29.42 29.40 29.40 29.31 29.31 29.29 29.28 29.21
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 75 59 65 57 68 54 73
TEMP 67 64 74 69 62 59 64 62 59 57 67 64 57 55 71 66
DEWPT 67 64 69 67 62 59 64 62 59 57 64 62 57 55 60 60
RH 100100 84 93100100100100100100 90 93100100 68 81
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2 B1 B1 B1 B1 B1
POP 12HR 80 60 50 50 40 20 10 10
RAIN SHWRS O SC SC NM SC SC SC SC SC IS IS IS
TSTMS SC IS SC 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