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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 AM EST Fri Dec 26 2025
NCZ005-262100-
RAWS 310540
36.38N 79.70W Elev. 858 ft
431 AM EST Fri Dec 26 2025
Date Fri 12/26/25 Sat 12/27/25 Sun 12/28/25
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 50 43 69 41 57
TEMP 45 45 47 49 44 47 46 47 49 61 68 67 54 49 45 42 41 44 52 55 51
DEWPT 33 29 28 28 33 38 42 46 48 51 48 46 45 42 39 38 37 39 40 42 45
MAX/MIN RH 45 99 44 89 60
RH 62 53 47 44 65 71 86 96 96 70 49 47 71 77 79 86 85 82 63 61 80
WIND DIR NE E SE S S SW SW W W NW N NE E E E E E SE S S S
WIND SPD 5 5 4 5 4 5 5 5 5 5 5 5 4 4 3 2 2 3 5 5 5
CLOUDS OV OV OV OV B2 SC SC FW SC FW FW SC FW SC B2 B2 OV OV OV OV OV
CLOUDS(%) 100100100 98 82 46 50 21 30 22 19 29 25 35 83 82 93 93 92 91 90
VSBY 10 10 10 10 10 10 7 5 10 10 10 10 10 10 10 10 5 10 10 10 10
POP 12HR 5 5 0 5 10
MIX HGT 2 2 2 2 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 1 <1 1 1 1 1
T WIND DIR E E SE S S SW SW SW W NE NE E E E E E E SE S S S
T WIND SPD 13 8 8 8 6 9 8 8 5 1 6 8 11 11 9 6 4 3 4 6 10
DISPERSION VP PR PR PR VP VP VP VP PR
ADI 26 14 14 14 5 6 5 4 4 3 21 22 5 5 4 3 4 4 7 11 7
MAX LVORI 2 2 2 2 3 3 5 8 9 3 2 2 3 4 4 6 5 5 3 2 4
STABILITY D D D D E E E F C C C C F F F F C C D D E
CEILING 3400 2800 None None None None None 1200 500 400
STA PRES 29.39 29.28 29.20 29.15 29.24 29.31 29.43 29.42 29.44 29.33
Date Mon 12/29/25Tue 12/30/25Wed 12/31/25Thu 01/01/26
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 50 68 28 42 26 49 27 47
TEMP 54 58 64 47 35 28 41 35 29 27 47 40 32 28 44 37
DEWPT 52 55 48 30 18 13 10 9 8 7 12 16 15 12 13 10
RH 93 90 56 51 49 53 27 33 40 42 24 37 49 50 28 32
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV OV B2 B1 FW FW FW CL CL FW FW SC SC SC SC B1
POP 12HR 10 50 10 0 0 0 0 0
RAIN 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