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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EST Tue Jan 13 2026
VAZ012-140900-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
401 PM EST Tue Jan 13 2026
Date 01/13/26 Wed 01/14/26 Thu 01/15/26 Fri
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 36 46 14 24 8
TEMP 41 40 39 37 36 42 45 43 37 32 23 18 15 20 23 22 17 15 13 10 9
DEWPT 22 24 25 25 26 29 31 32 33 28 15 9 6 6 3 2 4 4 4 3 2
MIN/MAX RH 66 57 88 39 74
RH 46 52 57 61 67 60 58 65 85 85 71 67 67 54 41 41 56 61 67 73 72
WIND DIR SW W W W W W W W W NW NW NW NW NW NW NW NW NW W W SW
WIND SPD 4 5 6 6 6 5 5 5 5 6 9 9 9 9 9 8 6 5 3 3 3
WIND GUST 16 17 20 20 20 19
CLOUDS FW FW FW B1 B2 OV OV OV OV OV B2 B2 B2 SC B1 B1 SC FW FW FW FW
CLOUDS(%) 14 12 19 63 76 89100 90 91 90 76 76 73 49 57 54 30 19 11 13 21
VSBY 10 10 10 10 10 10 10 5 5 6 10 10 10 10 10 10 10
POP 12HR 5 60 60 10 5
FLURRIES IS
RAIN L L
RAIN SHWRS IS
SNOW L L
SNOWSHWRS IS IS
SPRINKLES IS
MIX HGT <1 <1 <1 <1 <1 1 2 2 2 3 3 3 3 4 5 5 3
T WIND DIR SW SW W W W W W W W NW NW NW NW NW NW NW NW
T WIND SPD 10 11 11 11 9 16 21 19 14 32 32 32 29 28 26 26 27
DISPERSION VP PR PR PR PR PR PR PR PR PR VP VP
ADI 5 5 5 8 10 25 47 39 10 22 43 43 72102 81 83 12
MAX LVORI 2 2 3 3 3 2 1 3 5 4 3 1 1 1 1 1 2
STABILITY F F F E D D D D E E D D D C D D F
CEILING None 7200 8600 1000 800 1600 None None None
STA PRES 27.03 26.96 26.89 26.82 26.85 26.91 26.97 27.00
Date 01/16Sat 01/17/26Sun 01/18/26Mon 01/19/26Tue 01/20/26
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 39 24 38 12 25 13 36 11 29
TEMP 37 32 27 26 37 27 19 13 24 19 17 15 35 26 20 11 28 22
DEWPT 5 15 20 21 18 15 11 5 3 3 5 6 10 11 8 2 -1 2
RH 26 49 74 81 46 60 70 70 39 49 58 67 35 52 59 66 28 41
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC FW FW
POP 12HR 10 40 40 30 20 10 5 10 5
SNOW S C C
SNOWSHWRS IS SC SC 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
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