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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 AM EST Sat Jan 17 2026
NCZ006-172100-
RAWS 310801
36.37N 79.29W Elev. 580 ft
501 AM EST Sat Jan 17 2026
Date Sat 01/17/26 Sun 01/18/26 Mon 01/19/26
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 52 32 40 20 45
TEMP 36 41 50 52 45 40 39 37 34 36 37 38 30 25 22 20 21 34 43 45 36
DEWPT 18 27 35 37 36 35 33 33 31 29 26 22 19 16 14 13 12 14 15 15 15
MAX/MIN RH 46 93 52 73 29
RH 47 57 56 56 70 82 79 85 89 75 64 52 63 68 71 74 68 43 32 29 42
WIND DIR S SW SW SW W W NW NW N N NW NW NW W W SW SW W W W W
WIND SPD 6 8 9 5 1 1 1 1 2 4 5 4 2 1 1 2 2 5 9 8 3
WIND GUST 19
CLOUDS B2 B2 B2 B1 B1 B2 OV OV OV OV OV B1 FW CL FW FW FW CL CL CL FW
CLOUDS(%) 76 79 73 54 67 82 95 92 98 93 90 60 10 3 6 6 6 3 4 4 7
VSBY 10 10 10 10 10 10 8 6 2 4 8 7 10
POP 12HR 20 50 50 5 0
RAIN C C C C
SNOW C C C C
MIX HGT <1 1 3 3 <1 <1 <1 <1 1 2 3 3 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR S SW SW SW S S S S
T WIND SPD 9 12 17 8 3 3 2 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 10 19 41 24 2 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0
MAX LVORI 2 2 1 2 3 5 4 6 6 4 3 2 3 4 4 4 4 2 2 2 2
STABILITY D D D C F F F F A A A A A A A A A A A A A
CEILING 2700 18800 20200 4100 600 None None None None None
STA PRES 29.44 29.46 29.47 29.41 29.37 0.0 0.0 0.0 0.0 0.0
Date Tue 01/20/26Wed 01/21/26Thu 01/22/26Fri 01/23/26
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 18 36 16 47 27 52 27 46
TEMP 25 18 33 27 18 17 43 38 32 29 50 43 34 28 42 38
DEWPT 11 3 -2 2 1 2 10 16 18 20 28 29 27 22 21 24
RH 55 51 22 33 46 51 25 40 56 69 42 57 75 78 43 57
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW CL CL CL FW SC SC B1 B1 B1 SC SC SC SC
POP 12HR 0 0 0 0 5 20 20 10
RAIN S S S
SNOW 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