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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EST Wed Dec 24 2025
VAZ012-242100-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
631 AM EST Wed Dec 24 2025
Date Wed 12/24/25 Thu 12/25/25 Fri 12/26/25
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 61 44 63 44 53
TEMP 51 52 60 59 49 46 45 47 52 59 62 61 55 52 51 48 45 47 48 49 45
DEWPT 47 44 35 34 38 41 42 46 50 53 52 52 52 51 49 47 45 43 40 39 41
MAX/MIN RH 36 95 69 100 68
RH 86 74 39 39 66 83 89 96 93 80 70 72 90 96 93 96100 86 74 68 86
WIND DIR NW NW NW W W S S SW W W W W W NW SW S SE SE S S S
WIND SPD 5 3 2 1 1 1 2 3 4 4 5 4 2 2 1 2 2 3 3 3 3
WIND GUST 16 14 16
CLOUDS SC FW FW SC B1 B1 B2 B2 OV OV B2 B2 B2 OV OV OV OV OV OV B2 B2
CLOUDS(%) 44 21 22 36 62 65 86 82 88 88 81 73 84 91 90 92 92 93 94 86 87
VSBY 10 10 10 10 10 10 10 7 6 7 8 8 10 9 8 10 4 4 9 10 10
POP 12HR 0 70 80 60 70
RAIN S L D D L L C C L L L L C C L
MIX HGT 1 1 2 <1 <1 <1 <1 <1 1 2 3 2 <1 <1 <1 <1 <1 1 1 1 <1
T WIND DIR NW NW NW W SW S S S SW SW W W W W W S SE SE SE SE S
T WIND SPD 14 18 10 3 2 3 3 4 6 9 18 11 6 6 4 3 4 10 12 8 6
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 22 29 25 4 1 2 2 2 9 17 40 24 3 3 2 2 5 13 18 10 3
MAX LVORI 5 3 2 2 3 5 7 6 5 3 3 3 6 6 9 10 9 4 2 3 6
STABILITY C B B B F F F F D D D D F F F F C C C C F
CEILING None None 8900 200 100 100 100 100 100 400
STA PRES 27.44 27.43 27.42 27.34 27.28 27.22 27.24 27.21 27.22 27.17
Date Sat 12/27/25Sun 12/28/25Mon 12/29/25Tue 12/30/25
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 45 64 48 63 25 37 12 27
TEMP 49 52 63 53 48 49 60 55 42 27 31 21 15 12 25 20
DEWPT 49 50 49 48 47 45 50 45 34 19 8 4 2 -1 -1 1
RH 100 93 60 83 96 86 69 69 73 71 37 47 55 55 31 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 B1 B2 OV B2 B2 B1 SC FW FW FW FW SC
POP 12HR 70 10 20 60 50 20 10 5
RAIN L L S C L C C
SNOWSHWRS 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