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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EST Sun Dec 7 2025
NCZ003-080900-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
1231 AM EST Sun Dec 7 2025
Date 12/06/25 Sun 12/07/25 Mon 12/08/25 Tue
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 29 48 31 41 19
TEMP 31 30 29 39 46 46 39 36 37 35 35 38 38 37 32 28 26 22 21
DEWPT 28 26 26 33 36 37 36 34 34 33 33 35 33 30 28 25 22 19 17
MIN/MAX RH 93 66 94 77 88
RH 88 85 88 79 68 71 89 92 89 92 92 89 82 75 85 88 85 88 84
WIND DIR N N N S S S N NW NW N N NE NE E E E N N N
WIND SPD 0 0 0 2 3 2 0 1 1 2 2 3 4 3 1 1 0 0 0
CLOUDS SC SC B1 B1 B2 B1 SC B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 SC SC
CLOUDS(%) 39 48 56 67 78 67 37 52 78 87 86 85 86 81 79 71 72 45 33
VSBY 8 6 2 6 9 9 9 8 9 8 3 3 4 3 10 10 10
POP 12HR 0 5 20 50 10
RAIN S S C C
SNOW C C C
Obvis PF PF
MIX HGT <1 <1 <1 1 2 1 <1 <1 <1 <1 1 2 2 2 2
T WIND DIR NW N NW S S SW N NW N N NE NE NE E SE
T WIND SPD 5 3 2 2 5 1 1 1 3 8 8 10 9 3 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 3 2 2 4 14 2 1 1 2 4 15 23 18 8 2
MAX LVORI 6 7 6 4 3 3 7 8 7 6 5 4 3 4 6
STABILITY G G B C C C G F F F C C D C F
CEILING None 12700 6200 4200 2900 800 600 600
STA PRES 28.11 28.13 28.08 28.09 28.09 28.18 28.21
Date 12/09Wed 12/10/25Thu 12/11/25Fri 12/12/25Sat 12/13/25
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 42 26 51 32 49 32 47 21 36
TEMP 39 35 29 30 48 44 38 33 47 44 40 34 46 35 28 22 35 24
DEWPT 25 26 27 26 34 34 32 28 32 34 35 31 30 23 18 12 12 9
RH 57 69 92 85 58 68 79 82 56 68 82 89 53 61 66 65 38 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC B1 B1 B1 B1 B1 B1 B1 B2 B1 SC SC SC SC SC SC
POP 12HR 0 0 0 20 30 40 20 10 5
RAIN S S C C C 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