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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
101 PM EST Thu Nov 20 2025
VAZ012-202100-
RAWS 447502
37.01N 81.18W Elev. 2540 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 59 49 66 53 62
TEMP 58 52 52 51 51 51 60 64 64 58 57 57 56 54 60 60 56 48
DEWPT 46 47 49 48 48 50 55 56 56 55 55 54 54 53 53 50 45 44
MAX/MIN RH 64 96 72 96 66
RH 64 83 89 89 89 96 84 75 75 90 93 90 93 96 78 69 66 86
WIND DIR W W W W W SW SW W W SW SW W W W W NW NW NW
WIND SPD 2 2 2 2 2 2 2 3 2 4 4 6 6 6 5 5 4 4
WIND GUST 12
CLOUDS B1 B1 B2 B2 OV OV B2 OV B2 B2 OV B2 B2 B2 B2 B2 B1 SC
CLOUDS(%) 59 68 86 81 94 94 80 91 81 79 90 80 82 82 72 70 53 48
VSBY 10 10 10 9 0 0 2 2 10 10 10 10 10 6 10 10 10 10
POP 12HR 0 70 90 70 50
RAIN L D C L C C C L L C C
RAIN SHWRS IS IS
MIX HGT 2 <1 <1 <1 <1 <1 <1 1 1 <1 <1 <1 <1 <1 2 3 2 2
T WIND DIR W SW SW SW NE SE SW W SW SW W W W W NW NW NW NW
T WIND SPD 10 8 4 4 1 3 5 13 13 9 13 13 13 6 10 17 13 8
DISPERSION VP VP VP VP VP VP PR PR VP
ADI 25 4 2 2 1 3 4 23 21 6 9 9 9 8 20 39 27 5
MAX LVORI 2 5 6 6 7 6 5 3 3 5 6 5 6 6 3 3 3 5
STABILITY C F F F F C C C C E E E E D D D D E
CEILING 600 100 100 100 500 2400 700 700 None
STA PRES 27.32 27.29 27.26 27.26 27.19 27.15 27.11 27.14 27.21
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 35 59 35 61 43 59 47 60
TEMP 41 36 58 46 40 36 60 49 46 45 56 51 51 49 59 49
DEWPT 37 33 31 34 32 32 35 36 35 36 45 46 49 48 49 43
RH 85 89 36 63 73 85 39 61 65 70 66 83 93 96 69 80
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW FW SC B1 B2 B2 B2 B2 B2 B2 B1
POP 12HR 10 5 0 5 20 60 60 20
RAIN S C L 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