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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 PM EST Tue Jan 20 2026
NCZ006-210900-
RAWS 310801
36.37N 79.29W Elev. 580 ft
701 PM EST Tue Jan 20 2026
Date 01/20/26 Wed 01/21/26 Thu 01/22/26 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 17 47 32 55 33
TEMP 23 20 17 17 30 44 46 39 37 36 34 34 44 55 56 48 41 39 37 35
DEWPT 2 2 3 4 7 14 17 19 22 23 24 25 30 34 34 34 33 33 33 32
MIN/MAX RH 54 28 69 42 89
RH 39 45 53 56 37 29 31 44 54 59 66 69 57 45 43 58 73 79 85 89
WIND DIR N N N S S S S S SW SW SW SW W W W W W NW NW N
WIND SPD 0 0 0 1 4 8 8 4 4 4 3 3 4 5 4 1 1 1 1 2
CLOUDS CL CL CL CL CL SC SC SC B1 B1 B1 SC SC SC SC SC B1 B1 B2 OV
CLOUDS(%) 2 4 4 5 4 29 35 26 51 64 54 36 36 29 30 42 56 62 84 92
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 7 7 6
POP 12HR 0 0 5 10 30
RAIN C C C
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 1 2 3 <1
T WIND DIR E E SE SE S S S S SW SW SW SW SW W S SW
T WIND SPD 1 1 3 4 13 16 19 9 8 8 6 6 5 4 2 3
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 2 5 28 50 57 4 5 5 3 7 9 13 8 2
MAX LVORI 2 2 2 2 2 1 1 2 3 3 3 3 2 2 2 3
STABILITY G G G B C C C F E E F B C C C F
CEILING None None None None None None None None None
STA PRES 29.84 29.83 29.82 29.69 29.64 29.58 29.62 29.60
Date 01/23Sat 01/24/26Sun 01/25/26Mon 01/26/26Tue 01/27/26
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 46 19 25 13 28 13 31 3 32
TEMP 44 38 30 20 24 19 16 15 24 24 18 13 29 23 11 4 29 22
DEWPT 31 24 16 10 8 11 12 14 18 18 14 10 17 13 5 1 15 12
RH 60 57 55 64 50 70 84 96 77 77 84 87 60 65 76 87 55 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B2 B2 OV OV OV OV OV B2 B1 B1 B1 SC FW FW FW FW
POP 12HR 50 40 80 90 80 30 10 0 5
FRZG RAIN S S S
RAIN C C S
SLEET S S S
SNOW C C L D D D D C C 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