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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EST Mon Dec 29 2025
NCZ005-300900-
RAWS 310540
36.38N 79.70W Elev. 858 ft
301 PM EST Mon Dec 29 2025
Date 12/29/25 Tue 12/30/25 Wed 12/31/25 Thu
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 24 41 26 49 32
TEMP 42 34 30 28 26 25 31 38 39 31 28 29 27 27 36 46 48 42 38 37 34 32
DEWPT 16 14 13 13 12 11 11 9 8 7 6 7 9 10 13 16 20 21 21 22 25 25
MIN/MAX RH 56 26 49 29 73
RH 34 43 49 53 55 55 43 29 27 36 38 39 46 48 38 29 33 43 50 54 69 75
WIND DIR W W W W W W NW W W W W W W W W W W W W W W W
WIND SPD 17 12 10 8 8 10 12 13 10 5 4 5 5 6 10 11 10 5 5 5 5 5
WIND GUST 28 23 21
CLOUDS CL CL CL FW CL CL CL CL FW FW B1 SC FW FW FW FW SC SC SC SC SC SC
CLOUDS(%) 4 4 4 9 3 4 4 4 7 25 53 43 13 18 16 25 48 48 34 35 29 35
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 4 1 1 <1 <1 <1 3 4 5 <1 1 1 <1 <1 2 4 4 2
T WIND DIR W NW NW NW NW NW NW W W W W W W SW W W SW SW
T WIND SPD 28 26 21 19 20 19 18 16 17 10 12 13 6 10 16 18 13 6
DISPERSION FR FR PR PR PR VP PR PR PR PR PR PR
ADI 83 24 15 13 14 21 46 46 69 5 8 9 3 9 44 50 54 5
MAX LVORI 1 2 2 2 2 2 1 1 1 2 2 2 2 2 1 1 1 2
STABILITY D D E E E C D D C F E E F C C D C E
CEILING None None None None None None None None None
STA PRES 29.23 29.26 29.33 29.29 29.32 29.26 29.22 29.12
Date 01/01Fri 01/02/26Sat 01/03/26Sun 01/04/26Mon 01/05/26
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 50 27 53 38 51 31 50 30 53
TEMP 48 41 31 28 50 45 41 38 49 44 36 32 47 41 33 31 51 46
DEWPT 24 24 23 23 27 29 31 35 36 33 29 26 25 24 25 25 28 31
RH 39 50 72 81 41 53 67 89 61 65 75 78 42 50 72 78 41 55
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW SC B2 B2 B2 B2 B2 B1 SC SC SC B1 B1 B1 B1 SC
POP 12HR 0 0 0 40 60 20 0 5 10
RAIN C L 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