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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EST Fri Dec 5 2025
NCZ005-060900-
RAWS 310540
36.38N 79.70W Elev. 858 ft
1231 AM EST Fri Dec 5 2025
Date 12/04/25 Fri 12/05/25 Sat 12/06/25 Sun
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 30 34 26 46 28
TEMP 37 32 30 31 33 34 31 29 29 27 29 37 44 45 40 36 33 30 28
DEWPT 29 31 30 30 31 30 30 29 29 27 29 34 37 38 38 36 33 30 28
MIN/MAX RH 100 86 100 74 100
RH 72 96100 96 92 85 96100100100100 89 76 76 92100100100100
WIND DIR NE E NE NE N N N N W W SW SW SW SW W W NW N N
WIND SPD 5 6 6 5 5 4 2 1 1 1 2 3 4 3 2 2 2 2 2
CLOUDS OV OV OV OV OV OV B2 B2 OV OV B2 B2 B2 B2 B2 SC SC SC SC
CLOUDS(%) 100100100100 97 90 79 78 92 88 87 84 87 86 70 46 39 38 42
VSBY 9 2 3 3 5 5 8 3 8 8 4 10 10 10 10 10 10 10 9
POP 12HR 90 90 10 10 5
RAIN L
SNOW S D D
MIX HGT <1 1 1 1 1 <1 1 <1 <1 <1 <1 <1 2 1 <1
T WIND DIR E E E NE NE N N N NW W W SW SW SW W
T WIND SPD 13 13 13 8 9 9 5 3 1 1 1 5 11 8 5
DISPERSION PR PR VP VP VP VP VP VP VP VP
ADI 9 9 20 12 13 11 3 2 1 1 1 7 20 13 3
MAX LVORI 3 6 5 6 5 5 8 10 10 10 10 5 3 4 6
STABILITY E E D D D D F F F F C C D C F
CEILING 1900 500 1000 1300 1000 300 1400 None
STA PRES 29.43 29.40 29.30 29.27 29.23 29.23 29.20
Date 12/07Mon 12/08/25Tue 12/09/25Wed 12/10/25Thu 12/11/25
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 49 31 41 19 42 28 51 34 49
TEMP 47 42 36 32 40 33 24 21 40 36 32 30 48 44 40 36 49 39
DEWPT 35 36 33 30 25 21 17 14 20 25 27 27 33 34 34 34 32 28
RH 63 79 89 92 55 61 74 74 44 64 81 88 56 68 79 92 52 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 B1 SC FW SC SC FW SC SC SC B1 B1 B1 B1 SC
POP 12HR 10 20 10 5 5 0 5 20 20
RAIN S S S 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