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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 AM EST Thu Dec 4 2025
VAZ018-042100-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
901 AM EST Thu Dec 4 2025
Date Thu 12/04/25 Fri 12/05/25 Sat 12/06/25
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 41 25 31 29 46
TEMP 35 41 38 31 30 30 28 26 27 30 31 30 30 30 31 33 39 44 43 36
DEWPT 23 23 26 23 21 21 22 22 24 26 27 25 25 26 27 29 33 34 34 30
MAX/MIN RH 48 87 74 87 67
RH 61 48 62 72 69 69 78 85 88 85 85 81 81 85 85 85 79 68 70 79
WIND DIR NW NW NW NW N SE SE SE SE SE SE SE SW W W W W W W W
WIND SPD 6 6 5 2 2 2 2 3 3 2 2 1 1 1 2 2 3 4 3 2
WIND GUST 20 20 17 13 14 14
CLOUDS SC B1 B2 B2 B2 OV OV OV B2 OV B2 B2 B2 B2 B2 B2 B1 B1 B1 SC
CLOUDS(%) 35 64 72 72 80 97 96 94 86 88 85 74 83 80 77 70 61 58 55 50
VSBY 10 10 10 10 9 3 2 2 3 4 5 5 3 4 4 3 4 10 10 10
POP 12HR 0 80 80 5 5
FRZG DRZL C
SNOW C L D L S
MIX HGT 1 2 2 <1 <1 <1 1 1 1 1 <1 <1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR NW NW NW NW NE E SE SE SE S N N NW W W W W W W W
T WIND SPD 12 16 12 5 3 9 12 14 9 4 0 1 1 3 4 4 5 10 11 10
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 20 30 22 3 2 4 6 21 13 6 0 1 1 2 2 4 10 20 30 5
MAX LVORI 2 1 2 3 3 3 4 3 4 4 4 6 6 5 6 5 4 3 3 4
STABILITY C D D F F F F C C C C F F F F C C D C F
CEILING 5300 10700 1800 1200 1800 2100 800 600 None
STA PRES 27.88 27.89 27.84 27.80 27.69 27.67 27.65 27.65 27.61
Date Sun 12/07/25Mon 12/08/25Tue 12/09/25Wed 12/10/25
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 30 45 30 37 20 41 30 46
TEMP 32 30 43 36 34 31 36 28 22 22 39 32 31 32 45 39
DEWPT 27 25 33 31 29 26 25 18 14 14 23 23 24 25 31 29
RH 81 81 67 82 82 81 64 66 71 71 52 69 75 75 58 67
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B2 B2 B2 B1 SC SC SC SC SC B1 B1 B1 B1
POP 12HR 10 20 30 30 10 10 10 20
RAIN S S C C S
SNOW C C
$$
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