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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 PM EST Fri Dec 5 2025
NCZ003-052100-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
1231 PM EST Fri Dec 5 2025
Date Fri 12/05/25 Sat 12/06/25 Sun 12/07/25
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 33 29 45 27 45
TEMP 31 32 32 31 32 30 31 36 42 44 38 34 31 30 29 37 43 44 38
DEWPT 30 30 31 30 30 30 31 35 37 39 37 33 29 28 28 33 35 36 35
MAX/MIN RH 89 100 81 96 71
RH 96 92 96 96 92100100 96 82 82 96 96 92 92 96 85 73 73 89
WIND DIR NE NE NE N SW W W W SW SW W NW NW N N E S S W
WIND SPD 4 2 1 0 1 1 1 2 3 2 2 2 2 2 2 2 3 2 2
CLOUDS OV OV B2 B2 OV OV OV OV B2 B1 FW FW FW SC SC B1 B1 B1 SC
CLOUDS(%) 96 90 82 86 96 93 95 89 83 52 21 11 20 30 49 54 63 54 49
VSBY 4 6 6 2 2 3 1 8 10 10 9 9 10 9 10 10 10 10 6
POP 12HR 80 0 0 0 10
FRZG RAIN
SNOW
MIX HGT 1 1 <1 1 <1 <1 <1 <1 2 1 <1 <1 <1 <1 <1 <1 2 1 <1
T WIND DIR NE N NE E W NW W W W SW SW W N NW N N S W SW
T WIND SPD 8 5 4 2 1 2 1 3 6 8 3 1 1 2 1 0 3 3 3
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 11 7 2 1 1 1 1 4 15 11 2 1 1 1 1 0 8 5 2
MAX LVORI 6 6 6 7 9 10 9 8 4 4 7 9 8 7 8 6 3 3 7
STABILITY C C F F F F C B B C F G G G B C C C F
CEILING 400 1100 400 10600 None None None None None
STA PRES 28.91 28.91 28.90 28.90 28.87 28.93 28.97 28.98 28.90
Date Mon 12/08/25Tue 12/09/25Wed 12/10/25Thu 12/11/25
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 30 38 20 41 27 48 36 45
TEMP 35 31 37 31 25 22 37 32 30 28 45 42 39 37 44 36
DEWPT 32 27 25 22 18 17 21 25 25 25 33 34 34 32 27 24
RH 89 85 61 69 74 81 52 75 81 88 62 73 82 82 51 61
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC SC SC SC SC FW FW SC B1 B1 B1 B1 B1 SC
POP 12HR 20 20 5 0 0 5 20 30
RAIN S S S S C S
SLEET S
SNOW S 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