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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 PM EST Tue Jan 20 2026
VAZ012-202100-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
1231 PM EST Tue Jan 20 2026
Date Tue 01/20/26 Wed 01/21/26 Thu 01/22/26
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 27 13 47 30 46
TEMP 25 26 19 16 15 13 15 30 45 46 37 33 34 33 33 40 45 44 34
DEWPT -13-13-10 -7 -3 -1 1 3 10 13 15 19 26 29 29 29 24 22 23
MAX/MIN RH 15 53 23 85 40
RH 17 17 26 35 44 53 53 31 23 26 40 56 72 85 85 64 43 41 64
WIND DIR W W W W SW S S S S S S SW W W W W W W W
WIND SPD 5 4 2 2 2 2 2 2 4 4 3 3 4 4 4 4 4 3 2
WIND GUST 14
CLOUDS CL CL CL CL CL CL CL FW FW SC B1 B1 B2 B2 B1 SC SC FW FW
CLOUDS(%) 4 5 2 3 2 5 5 9 25 37 55 66 70 79 66 47 31 22 19
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 7 6
POP 12HR 0 0 5 30 20
RAIN S C C S S
SNOW S C C S
MIX HGT 3 3 <1 <1 <1 <1 <1 <1 3 3 <1 1 1 1 1 2 3 3 <1
T WIND DIR W W W W SW S S S S S SW SW W W W W W W W
T WIND SPD 19 17 9 9 4 3 4 11 20 16 12 14 19 16 21 16 16 18 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 67 55 4 4 2 2 5 15 67 48 6 7 13 11 30 40 52 77 2
MAX LVORI 1 1 2 2 2 2 2 2 1 1 2 2 3 4 4 1 1 1 3
STABILITY C C G G G G B B C C F F E E D C C B G
CEILING None None None None None 2200 400 None None
STA PRES 27.46 27.5 27.45 27.42 27.33 27.32 27.31 27.36 27.34
Date Fri 01/23/26Sat 01/24/26Sun 01/25/26Mon 01/26/26
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 23 39 17 28 12 28 7 26
TEMP 27 24 38 29 22 18 26 22 17 13 27 18 14 8 25 15
DEWPT 22 19 14 14 9 4 8 10 11 9 12 8 6 2 3 3
RH 81 81 37 53 57 53 46 59 77 84 53 64 70 76 38 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B2 B2 B1 B2 OV OV B2 B2 B2 B2 B1 B1 SC SC
POP 12HR 20 20 40 70 80 60 30 10
SNOW S S S S C C L D D L C C C
$$
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