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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EST Thu Dec 25 2025
NCZ003-252100-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
301 AM EST Thu Dec 25 2025
Date Thu 12/25/25 Fri 12/26/25 Sat 12/27/25
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 67 43 44 44 68
TEMP 49 49 54 63 66 60 57 53 49 44 43 43 44 44 45 47 48 49 56 65 67 57
DEWPT 42 45 50 54 55 55 54 51 44 36 35 34 36 38 42 45 47 47 51 49 49 48
MAX/MIN RH 67 92 70 96 51
RH 77 86 86 72 68 84 90 93 83 73 73 70 73 79 89 93 96 93 83 56 52 72
WIND DIR S SW SW SW W NW N NE E E E SE S S SW SW W W NW NW NW NE
WIND SPD 2 3 4 5 4 3 2 4 10 9 5 3 3 2 3 4 4 4 4 4 3 4
CLOUDS B2 B2 SC B1 B1 B1 SC B1 OV OV OV OV OV OV B2 B1 SC B1 SC SC SC SC
CLOUDS(%) 74 85 48 67 55 62 48 54 89 96 91 93 95 94 86 57 47 64 41 41 35 29
VSBY 10 10 10 10 10 10 10 9 10 10 10 7 10 6 1 1 4 10 10 10 10 10
POP 12HR 20 20 50 10 5
RAIN S C C S S
MIX HGT <1 <1 <1 2 2 <1 <1 <1 1 2 2 2 1 <1 <1 <1 <1 <1 <1 4 3 <1
T WIND DIR SE S SW SW SW N N NE E E E E S S S SW SW SW SW W SW S
T WIND SPD 1 3 5 6 8 2 5 6 13 13 8 3 3 4 6 6 4 3 2 4 5 3
DISPERSION VP VP VP VP FR VP VP VP VP VP
ADI 1 3 7 15 16 1 3 5 15 24 14 7 6 2 3 5 3 3 3 16 21 2
MAX LVORI 4 6 5 3 3 6 6 6 5 3 4 3 3 5 6 6 8 6 5 2 2 3
STABILITY F C C C D F F E D D D C C F F E E C C C B F
CEILING 3300 13900 None 1400 2700 1100 700 None None None
STA PRES 29.02 28.93 29.01 29.05 29.09 29.00 28.94 28.89 28.93 28.91
Date Sun 12/28/25Mon 12/29/25Tue 12/30/25Wed 12/31/25
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 41 56 46 58 23 37 22 44
TEMP 46 41 52 51 50 51 54 42 31 24 35 31 24 23 41 36
DEWPT 44 40 42 44 47 48 40 24 15 10 7 8 9 9 11 15
RH 93 96 69 77 89 89 59 48 51 54 30 37 52 54 29 42
WIND SPD <15 <15 <15 <15 15> <15 <15 <15
AVG CLOUDS B1 B2 B2 B2 B2 B2 B2 B2 B1 SC FW CL FW FW FW FW
POP 12HR 5 10 30 50 5 0 0 0
RAIN 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