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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EST Thu Nov 20 2025
NCZ003-202100-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
631 AM EST Thu Nov 20 2025
Date Thu 11/20/25 Fri 11/21/25 Sat 11/22/25
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 63 50 69 56 70
TEMP 46 52 60 62 56 53 53 52 53 59 66 68 63 59 58 57 56 66 69 67 57
DEWPT 45 46 50 51 50 50 50 50 52 57 59 60 59 57 56 55 55 58 55 53 50
MAX/MIN RH 66 100 76 96 58
RH 96 80 69 67 80 89 89 93 96 93 78 76 87 93 93 93 96 75 61 61 77
WIND DIR SE SE S S S S SW S E SW SW S SW W W W W W NW NW N
WIND SPD 3 3 4 2 1 1 1 1 1 1 3 2 1 1 2 2 2 4 5 5 2
CLOUDS B1 B2 B2 B2 B2 B2 B2 OV B2 OV OV B2 B2 B1 B1 B1 B1 B1 SC SC SC
CLOUDS(%) 59 73 71 75 75 83 83100 84 93 88 76 75 63 67 67 56 54 44 32 31
VSBY 9 10 10 10 10 10 10 8 5 9 10 10 9 9 10 10 10 10 10 10 10
POP 12HR 5 50 50 50 30
RAIN C C C C S S C C C C C C
MIX HGT <1 2 2 1 <1 <1 <1 <1 <1 <1 1 1 <1 <1 <1 <1 <1 2 3 3 1
T WIND DIR S S SW W S SW NW N S S SW S S SW SW SW SW NW NW NW N
T WIND SPD 3 4 5 4 2 1 1 1 1 3 5 6 5 5 6 6 5 14 13 10 11
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 3 9 12 7 1 1 1 1 1 4 10 10 3 3 3 3 4 28 42 32 5
MAX LVORI 9 4 3 3 5 7 7 7 9 6 4 4 6 6 6 6 7 3 1 1 4
STABILITY C C D C F F F D C C C C F F F F C D C C G
CEILING 700 1800 1300 4300 600 500 400 1700 None None
STA PRES 28.25 28.20 28.20 28.17 28.14 28.07 28.02 27.98 28.03 28.06
Date Sun 11/23/25Mon 11/24/25Tue 11/25/25Wed 11/26/25
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 41 63 40 65 45 60 49 67
TEMP 48 41 61 53 43 41 64 53 48 47 57 56 52 49 66 56
DEWPT 44 38 41 43 38 37 42 44 42 42 49 50 50 49 51 49
RH 86 89 48 69 82 85 45 71 80 83 75 80 93100 58 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC SC B1 B2 B2 B2 B2 B2 B1 SC SC
POP 12HR 10 5 10 10 20 40 60 20
RAIN S C C L 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