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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EST Thu Dec 25 2025
NCZ006-260900-
RAWS 310801
36.37N 79.29W Elev. 580 ft
131 AM EST Thu Dec 25 2025
Date 12/24/25 Thu 12/25/25 Fri 12/26/25 Sat
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 43 69 41 49 44
TEMP 45 47 54 66 68 60 56 52 46 42 44 46 49 45 44 45 45 47
DEWPT 34 39 47 53 55 55 54 49 40 35 34 30 30 33 36 40 44 46
MIN/MAX RH 78 60 93 46 98
RH 65 74 77 63 63 84 93 89 79 76 68 53 48 62 73 82 96 96
WIND DIR S S SW SW W NW N NE NE NE E E SE SE S SW W W
WIND SPD 2 3 6 8 6 2 2 4 5 4 4 3 3 1 2 2 3 3
CLOUDS B2 OV B1 B1 SC SC B1 B1 B1 B2 OV OV B2 OV B2 B1 SC SC
CLOUDS(%) 86 88 56 59 47 45 61 62 63 77 94 92 85 89 80 66 29 38
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 8 0 1 2
POP 12HR 20 30 10 20 20
RAIN S C S S S S
MIX HGT <1 <1 2 2 2 <1 <1 1 1 2 2 2 1 1
T WIND DIR S S SW SW W W N NE NE NE E E SE S
T WIND SPD 6 6 13 13 12 4 6 18 12 11 9 4 5 6
DISPERSION VP VP VP VP PR VP VP VP VP
ADI 3 8 25 36 33 2 3 12 8 26 16 9 11 3
MAX LVORI 3 3 3 1 1 5 6 5 4 3 2 2 2 3
STABILITY F D D C C F F E E C D C C F
CEILING 7700 900 None None 19200 9900 3000 2700
STA PRES 29.53 29.43 29.33 29.42 29.51 29.54 29.44
Date 12/27Sun 12/28/25Mon 12/29/25Tue 12/30/25Wed 12/31/25
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 69 42 60 47 59 23 41 22 46
TEMP 69 54 45 42 56 54 53 52 54 39 28 24 39 33 25 23 44 39
DEWPT 50 47 43 41 45 48 50 49 33 18 11 10 9 9 11 12 14 16
RH 51 77 93 96 66 80 89 89 45 42 48 54 28 36 55 62 29 39
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B2 OV B2 B2 B2 B1 B1 B1 SC FW FW SC SC FW SC
POP 12HR 0 5 5 30 20 5 0 0 5
RAIN S 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