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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
504 PM EST Mon Nov 17 2025
NCZ005-172315-
RAWS 310540
36.38N 79.70W Elev. 858 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 60 31 63 45 71
TEMP 48 42 38 34 32 51 61 62 56 51 49 48 46 59 69 70 61
DEWPT 16 16 16 17 18 24 22 26 29 33 40 39 40 45 50 50 51
MAX/MIN RH 17 56 22 78 48
RH 27 34 40 49 56 34 22 25 35 50 71 71 79 60 51 49 70
WIND DIR NW NW W W S S S S S S SW SW SW W NW NW E
WIND SPD 3 2 1 1 1 3 6 6 5 5 5 5 3 4 4 3 2
CLOUDS CL CL FW CL CL FW SC B1 B1 B1 B2 B2 SC FW SC SC B1
CLOUDS(%) 4 3 9 2 5 14 42 58 65 68 78 76 26 19 43 41 58
VSBY 10 10 10 10 10 10 10 10 6 6 6 6 10 10 10 10 10
POP 12HR 0 0 10 60 0
RAIN C C L L
MIX HGT <1 <1 <1 <1 <1 1 3 2 <1 <1 <1 <1 <1 <1 3 2 <1
T WIND DIR W N NW W S S SW S S S W SW SW W NE E E
T WIND SPD 2 2 1 1 2 9 13 13 6 10 5 5 4 4 2 4 6
DISPERSION VP VP VP VP PR PR PR PR VP
ADI 1 1 1 1 2 17 44 27 5 7 4 4 5 5 7 13 3
MAX LVORI 2 2 2 2 3 2 1 2 2 2 3 3 4 3 2 2 3
STABILITY G G G G A B B C E E E E B B B B F
CEILING None None None 9400 7500 5900 None None
STA PRES 29.40 29.45 29.47 29.39 29.34 29.35 29.38 29.37
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 47 70 53 74 57 71 46 64
TEMP 52 47 66 59 54 54 71 66 59 57 69 57 51 46 61 56
DEWPT 49 47 49 51 52 53 56 55 55 55 54 51 48 44 45 45
RH 89100 54 75 93 96 59 68 87 93 59 80 89 93 56 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B1 B1 B2 OV B2 B2 B2 B2 B1 B1 SC SC SC SC
POP 12HR 5 0 20 10 50 30 20 5
RAIN S C C C S 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