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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Wed Sep 9 2026
NCZ006-100800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 PM EDT Wed Sep 9 2026
Date 09/09/26 Thu 09/10/26 Fri 09/11/26 Sat
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 93 70 92 68
TEMP 73 71 69 70 83 92 92 82 77 75 72 72 85 91 88 79 73 71 69 71
DEWPT 63 64 65 67 69 67 66 66 68 69 69 70 71 70 71 72 72 71 69 71
MIN/MAX RH 90 42 93 49 100
RH 71 79 87 90 63 44 43 58 74 82 90 93 63 50 57 79 97100100100
WIND DIR S SW SW SW W SW SW SW SW SW SW W N N NE NE NE N N N
WIND SPD 4 5 5 5 8 9 9 5 4 3 2 1 3 2 3 2 1 0 0 0
WIND GUST 16
CLOUDS FW FW FW FW FW FW FW FW FW SC SC FW SC B1 B1 B1 B1 B1 B2 B2
CLOUDS(%) 25 22 8 22 21 16 21 23 13 38 26 13 36 67 67 68 68 59 70 79
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 6 6 6 6 7 7
POP 12HR 0 0 0 50 50
RAIN SHWRS SC SC SC SC IS IS SC
TSTMS SC SC SC IS
MIX HGT <1 <1 <1 <1 3 8 8 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR S SW SW SW W W SW SW SW W SW SW W W NE NE
T WIND SPD 6 6 6 8 17 11 12 6 2 1 2 2 8 5 3 10
DISPERSION VP PR PR PR VP VP VP VP VP VP VP
ADI 3 3 3 8 67 91102 3 1 1 1 2 39 26 15 5
MAX LVORI 3 4 6 5 1 1 1 3 3 6 7 6 1 2 2 4
STABILITY F F F B B B B F F G G A B C C F
CEILING None None None None None None None 4500 4500
STA PRES 29.48 29.45 29.41 29.30 29.33 29.34 29.35 29.31
Date 09/12Sun 09/13/26Mon 09/14/26Tue 09/15/26Wed 09/16/26
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 68 90 68 91 67 91 68 93
TEMP 87 79 72 70 87 81 71 70 89 82 71 69 89 82 72 70 91 83
DEWPT 75 74 72 70 74 72 71 70 71 70 69 69 70 70 69 70 72 71
RH 68 85100100 65 74100100 56 67 93100 54 67 90100 54 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 SC SC SC SC FW SC FW SC FW FW FW FW FW
POP 12HR 80 70 20 10 10 5 10 10 20
RAIN SHWRS SC O NM IS IS IS
TSTMS IS SC 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
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