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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EST Tue Nov 18 2025
NCZ003-182100-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
131 PM EST Tue Nov 18 2025
Date Tue 11/18/25 Wed 11/19/25 Thu 11/20/25
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EST 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
MAX/MIN TEMP 61 46 71 46 65
TEMP 60 52 50 49 47 49 62 69 69 57 53 51 49 47 55 62 64 56
DEWPT 26 29 32 39 42 46 54 54 54 53 50 49 47 45 49 50 51 50
MAX/MIN RH 25 90 58 97 60
RH 27 41 50 68 83 89 75 59 59 86 89 93 93 93 80 65 63 80
WIND DIR S E S S W W W W W N N SE N N S S S S
WIND SPD 5 2 2 1 1 1 2 3 2 1 1 1 0 0 1 3 2 1
CLOUDS B1 B1 B1 B2 B1 SC B1 SC B1 B1 B1 B2 B2 B1 B1 SC B1 B2
CLOUDS(%) 64 65 69 78 57 34 51 37 51 65 54 79 73 62 54 50 62 82
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 60 0 5 0
RAIN C L
MIX HGT 2 <1 <1 <1 <1 <1 1 3 2 <1 <1 1 1 <1 2 3 2 <1
T WIND DIR S S SW SW W NW NW NW NW E SE SE SE SE S S S S
T WIND SPD 10 4 6 6 4 3 8 4 3 3 3 5 4 3 4 3 3 1
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 17 2 3 3 2 4 15 19 9 2 2 3 2 4 9 11 8 1
MAX LVORI 2 2 2 3 5 6 4 2 3 5 7 6 8 8 4 2 3 6
STABILITY C F F F F A C B C F F F F C C B C F
CEILING 9900 15000 None None None 0 0 None 0
STA PRES 28.21 28.16 28.14 28.20 28.21 28.24 28.23 28.25 28.20
Date Fri 11/21/25Sat 11/22/25Sun 11/23/25Mon 11/24/25
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MIN/MAX TEMP 53 70 54 66 44 62 40 65
TEMP 54 53 67 61 56 54 63 56 49 46 60 52 46 43 62 52
DEWPT 51 51 56 55 54 51 53 50 46 42 43 42 40 38 42 42
RH 90 93 68 81 93 90 70 80 89 86 53 69 79 82 48 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B2 B1 B1 B1 SC SC SC SC FW FW SC SC
POP 12HR 20 20 50 50 20 5 10 5
RAIN S S S C C C C S
$$
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