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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1231 AM EST Sun Dec 28 2025
NCZ003-290900-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
1231 AM EST Sun Dec 28 2025
Date 12/27/25 Sun 12/28/25 Mon 12/29/25 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 41 48 45 59 25
TEMP 45 42 41 41 43 44 47 46 46 46 46 55 54 48 38 32 29 27 25
DEWPT 41 38 39 41 42 43 44 46 46 46 46 48 33 23 18 14 13 12 11
MIN/MAX RH 100 83 100 34 55
RH 86 86 92100 96 96 89100100100100 77 45 37 44 47 51 53 55
WIND DIR NE E E SE S S S SW SW SW SW W W W W W NW NW NW
WIND SPD 5 4 2 1 2 2 1 4 5 8 10 13 12 14 18 19 18 14 12
WIND GUST 26 26 26 27 23
CLOUDS SC B2 OV OV OV OV OV OV OV OV OV B1 SC FW FW FW FW FW FW
CLOUDS(%) 44 83100100100100100100100100 94 62 27 10 9 18 19 18 13
VSBY 10 10 10 10 10 9 6 3 2 6 10 10 10 10 10
POP 12HR 5 20 30 30 0
DRIZZLE ? ?
RAIN S S S S S S S C C
MIX HGT 1 1 1 <1 1 1 <1 <1 1 1 2 3 5 5 3
T WIND DIR E E E S S S S SW SW SW SW W W W W
T WIND SPD 9 4 4 4 5 5 8 5 5 6 8 27 28 25 25
DISPERSION PR VP VP VP PR PR GD GD GD GD
ADI 8 3 7 4 8 7 5 5 5 8 14 69 86 78 34
MAX LVORI 5 6 4 5 4 4 6 9 9 6 5 3 1 1 1
STABILITY D E C C C C E D D D D D D D D
CEILING 800 500 500 400 200 2400 None None
STA PRES 29.07 29.07 28.96 28.85 28.68 28.66 28.72
Date 12/30Wed 12/31/25Thu 01/01/26Fri 01/02/26Sat 01/03/26
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 38 23 46 28 49 25 45 26 45
TEMP 35 29 24 24 42 37 31 30 46 39 32 27 41 35 30 27 42 39
DEWPT 9 8 7 7 10 17 18 19 20 21 20 14 14 17 17 17 22 26
RH 33 40 47 47 26 44 58 63 35 48 61 57 33 47 58 65 44 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC B1 SC FW FW SC B1 SC SC B1 B1 B1
POP 12HR 0 0 0 5 5 5 0 20 30
RAIN C C
SNOW 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