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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 PM EST Thu Nov 20 2025
VAZ018-202100-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
101 PM 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 57 48 65 56 62
TEMP 56 50 49 50 51 51 56 62 63 57 58 58 58 56 59 60 57 49
DEWPT 47 46 46 46 47 47 53 57 58 55 55 55 55 52 53 49 45 42
MAX/MIN RH 74 91 79 96 64
RH 72 86 89 86 86 86 90 84 84 93 90 90 90 86 80 67 64 77
WIND DIR W W W W W W SW SW W SW SW W W W W NW NW NW
WIND SPD 3 1 1 1 1 1 2 3 3 3 4 5 6 5 6 6 5 4
CLOUDS SC B1 B2 OV B2 B2 OV OV B2 B2 B2 B2 B1 B2 B1 B1 SC SC
CLOUDS(%) 44 65 82 88 81 86 95 96 76 87 87 75 69 71 66 60 40 35
VSBY 10 10 10 10 9 5 4 3 9 9 4 9 10 8 9 9 9 9
POP 12HR 5 40 80 70 40
RAIN C L L C L C L L L C C
RAIN SHWRS IS IS
MIX HGT 1 <1 <1 <1 <1 <1 <1 1 <1 <1 <1 <1 <1 <1 2 3 2 2
T WIND DIR W S S N W SE W W SW S SW W W W NW NW NW NW
T WIND SPD 10 2 1 0 1 1 1 5 5 5 8 12 14 8 6 14 13 9
DISPERSION VP VP VP VP VP VP PR PR VP
ADI 19 1 1 0 1 1 1 8 4 3 5 8 10 9 13 33 39 4
MAX LVORI 3 5 7 6 6 6 7 4 4 6 6 5 5 5 4 3 1 4
STABILITY B F F F F C C C C F E E E D D D C F
CEILING None 4500 0 300 1400 2600 1300 900 None
STA PRES 27.85 27.84 27.81 27.79 27.71 27.65 27.62 27.67 27.74
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 37 59 39 61 43 56 49 62
TEMP 42 38 56 47 42 39 59 48 45 44 53 49 51 51 60 51
DEWPT 36 33 33 34 33 32 33 35 34 36 44 45 48 48 51 44
RH 79 82 42 60 70 76 37 60 65 73 71 86 89 89 72 77
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW CL FW FW FW SC B1 B2 B2 B2 B2 B2 B2 B1
POP 12HR 10 0 0 5 20 50 60 20
RAIN S C C L C
RAIN SHWRS IS IS
$$
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