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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EST Fri Nov 21 2025
WVZ043-220900-
RAWS 465401
37.53N 81.00W Elev. 2725 ft
731 PM EST Fri Nov 21 2025
Date 11/21/25 Sat 11/22/25 Sun 11/23/25 Mon
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX TEMP 54 58 38 54 33
TEMP 56 56 55 55 56 55 53 49 46 43 40 39 47 53 52 45 41 38 35 34
DEWPT 55 56 55 55 55 50 46 45 43 40 38 37 39 34 34 35 35 34 32 31
MIN/MAX RH 100 76 97 47 93
RH 96100100100 96 83 77 86 89 89 92 92 74 48 50 68 79 85 89 89
WIND DIR SW SW W W W W NW NW NW W W W W W W W W NW W SW
WIND SPD 5 5 6 8 8 9 6 4 2 2 3 3 5 9 8 4 2 2 2 2
WIND GUST 17 18 19
CLOUDS B2 B2 B2 B2 B1 B2 B1 B1 B1 SC SC SC FW FW CL CL CL FW FW FW
CLOUDS(%) 79 85 72 75 64 73 62 56 61 41 31 30 18 7 4 4 4 6 15 21
VSBY 7 9 5 4 6 10 9 8 9 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 60 50 5 0 0
RAIN SHWRS SC NM SC SC IS
MIX HGT <1 <1 <1 <1 2 2 2 1 1 <1 <1 <1 2 3 3 <1
T WIND DIR SW W W W NW NW NW NW NW NW W W W W W NW
T WIND SPD 9 11 9 9 20 14 12 12 11 9 9 9 6 14 18 12
DISPERSION PR PR PR VP VP VP VP VP VP VP VP
ADI 6 8 8 10 39 32 22 8 5 4 4 10 17 49 57 6
MAX LVORI 6 8 8 7 4 4 3 5 5 6 7 6 3 1 1 3
STABILITY E E D D D D D E F F G B C C C F
CEILING 2400 700 800 1100 None None None None None
STA PRES 27.55 27.51 27.57 27.63 27.71 27.72 27.75 27.73
Date 11/24Tue 11/25/25Wed 11/26/25Thu 11/27/25Fri 11/28/25
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN TEMP 57 42 57 48 55 31 41 26 39
TEMP 55 50 45 43 55 53 51 51 53 45 38 32 41 33 29 26 37 33
DEWPT 31 34 34 36 47 49 50 51 46 36 30 26 20 19 19 19 18 21
RH 40 54 65 76 74 86 96100 77 70 73 78 42 56 66 74 46 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B2 B2 B2 OV B2 B2 B2 B1 B1 SC SC FW FW SC SC SC
POP 12HR 5 20 60 70 40 30 10 5 10
RAIN S C L L L C S 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