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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
504 PM EST Mon Nov 17 2025
NCZ001-172315-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
504 PM EST Mon Nov 17 2025
Date Mon 11/17/25 Tue 11/18/25 Wed 11/19/25
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 43 35 53 44 57
TEMP 39 39 38 37 38 46 53 51 45 46 47 48 50 49 54 56 52
DEWPT 13 12 12 14 18 21 26 29 28 34 43 45 48 49 51 51 50
MAX/MIN RH 27 44 34 96 86
RH 34 32 34 38 44 37 35 42 51 63 86 89 93100 90 83 93
WIND DIR NW W W W SW SW SW S SW SW W W W W W W W
WIND SPD 10 9 6 5 5 5 8 8 10 11 17 18 14 10 8 6 5
CLOUDS SC FW FW FW FW SC B1 B1 B2 B2 B1 B1 B2 B1 B2 B2 B2
CLOUDS(%) 33 20 7 6 24 27 57 63 80 80 65 65 76 69 78 74 74
VSBY 10 10 10 10 10 10 10 10 6 6 6 6 10 10 10 10 10
POP 12HR 0 0 20 60 10
RAIN L L C C
MIX HGT <1 <1 <1 <1 <1 <1 1 <1 <1 <1 <1 <1 <1 <1 2 1 <1
T WIND DIR NW NW W W SW S SW S SW SW NW W W W SW W W
T WIND SPD 9 5 3 2 3 10 11 10 11 10 13 9 5 6 3 8 5
DISPERSION FR PR PR PR FR FR GD GD PR
ADI 6 4 2 1 3 8 16 12 10 9 12 8 6 8 6 12 4
MAX LVORI 2 2 2 2 2 2 2 2 2 3 4 5 6 8 6 5 6
STABILITY E E F F B B D D D D D D D D D D E
CEILING None None None 4500 700 400 500 500
STA PRES 26.73 26.76 26.77 26.72 26.69 26.72 26.76 26.74
Date Thu 11/20/25Fri 11/21/25Sat 11/22/25Sun 11/23/25
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 49 59 50 60 51 56 42 52
TEMP 51 49 56 51 52 52 58 53 53 51 51 48 45 43 51 44
DEWPT 49 47 46 46 49 49 51 49 50 50 48 45 42 40 41 38
RH 93 93 69 83 89 89 77 86 89 96 89 89 89 89 68 79
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B2 OV OV B2 B2 B2 B2 B1 B1 B1 B1 SC
POP 12HR 10 10 30 30 60 40 20 10
RAIN S C S C L L 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