Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EST Mon Dec 15 2025
VAZ024-160900-
RAWS 441631
37.63N 79.51W Elev. 865 ft
431 PM EST Mon Dec 15 2025
Date 12/15/25 Tue 12/16/25 Wed 12/17/25 Thu
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 20 46 28 56 31
TEMP 28 24 23 23 21 32 43 44 35 31 31 31 31 46 55 52 42 37 35 33 32
DEWPT 5 6 5 6 7 9 12 18 19 19 20 20 20 24 26 31 30 30 29 29 28
MIN/MAX RH 55 28 66 32 88
RH 37 45 45 47 54 37 28 35 52 61 63 63 63 42 32 44 62 75 78 85 85
WIND DIR SW SW W SW W W SW SW SW W W W W W W W W NW N N N
WIND SPD 2 2 2 2 2 2 2 2 1 2 2 2 2 3 5 4 2 1 1 0 0
WIND GUST 16
CLOUDS FW FW FW FW FW CL FW FW FW FW FW FW SC B1 B2 B1 B1 SC SC SC FW
CLOUDS(%) 9 20 24 11 8 4 13 9 9 9 8 17 43 60 80 68 58 50 38 33 24
VSBY 10 10 10 10 10 10 10 10 6 10 10 10 10 8 8 8 10
POP 12HR 0 0 0 5 5
MIX HGT <1 <1 <1 <1 <1 2 2 1 <1 <1 <1 <1 <1 2 3 1 <1
T WIND DIR S S SW W W NW SW SW S SW W W W W W W NW
T WIND SPD 5 4 3 2 3 5 4 8 3 3 3 3 3 5 17 9 2
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 2 1 4 14 14 11 2 2 2 2 4 12 38 13 1
MAX LVORI 2 2 2 2 2 2 2 2 2 3 3 3 3 2 1 2 3
STABILITY G G G G B B B B G G G G B C D D F
CEILING None None None None None None 10200 4300 None
STA PRES 28.65 28.64 28.69 28.63 28.60 28.55 28.55 28.55
Date 12/18Fri 12/19/25Sat 12/20/25Sun 12/21/25Mon 12/22/25
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 54 36 46 24 50 33 57 33 50
TEMP 53 47 48 38 44 34 27 25 47 41 35 36 56 46 39 34 50 43
DEWPT 36 42 45 32 22 17 16 17 22 26 27 30 40 37 34 32 33 33
RH 52 83 89 79 41 49 63 71 37 55 72 79 55 71 82 92 52 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 OV B2 FW FW FW SC FW FW SC SC B1 B1 SC B1 B1 B1
POP 12HR 30 90 5 5 0 10 20 20 20
RAIN S S
RAIN SHWRS SC O NM IS IS IS
$$
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