Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EST Sun Dec 7 2025
VAZ046-072100-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1031 AM EST Sun Dec 7 2025
Date Sun 12/07/25 Mon 12/08/25 Tue 12/09/25
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EST 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
MAX/MIN TEMP 44 30 32 13 36
TEMP 43 44 36 34 33 32 31 30 31 30 27 23 20 16 16 28 36 36 32
DEWPT 33 34 32 31 31 32 30 27 23 19 16 13 11 10 10 13 17 21 22
MAX/MIN RH 67 100 62 79 47
RH 67 68 85 89 92100 96 88 72 63 63 65 67 77 77 53 45 54 66
WIND DIR S S SW W NW NE NE NE NE NE NE NE N N NW SW SW SW SW
WIND SPD 4 3 2 2 2 5 10 11 10 9 5 4 3 2 2 4 8 8 6
WIND GUST 20 21 20 17
CLOUDS B2 B1 B1 B1 OV B2 B2 OV OV B2 B1 SC FW FW FW FW FW SC SC
CLOUDS(%) 70 54 53 58 92 84 84 91 89 85 59 33 13 11 12 22 18 39 38
VSBY 10 10 9 8 7 6 7 1 2 7 10 10 10 10 10 10 10 10 10
POP 12HR 0 30 60 0 0
SNOW L L C C
MIX HGT 2 <1 <1 <1 <1 <1 1 2 2 2 <1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR SW S S NW NE NE NE NE NE NE N N NW W SW SW SW SW SW
T WIND SPD 3 4 2 1 2 13 18 23 20 12 8 3 2 2 1 10 16 17 9
DISPERSION VP VP VP PR PR VP VP VP PR
ADI 6 4 1 1 1 9 26 45 43 25 5 2 1 1 1 17 43 38 4
MAX LVORI 3 3 6 8 7 8 4 4 3 2 3 3 3 3 4 2 1 1 3
STABILITY D C F F F E D D D D E F G G B C C C F
CEILING None 10000 3800 2400 3200 None None None None
STA PRES 29.37 29.38 29.40 29.48 29.51 29.54 29.51 29.48 29.32
Date Wed 12/10/25Thu 12/11/25Fri 12/12/25Sat 12/13/25
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MIN/MAX TEMP 28 48 32 47 33 44 22 34
TEMP 30 32 47 46 40 34 47 41 39 36 44 37 27 22 34 25
DEWPT 25 28 35 34 32 29 31 31 33 32 30 23 15 10 10 7
RH 81 85 63 63 73 82 53 67 79 85 57 56 60 59 36 46
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B2 B2 B1 B1 B1 B1 B2 B2 B1 B1 SC SC SC SC
POP 12HR 0 0 5 20 40 40 20 10
RAIN S C C C C
SNOW 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