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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EST Wed Nov 19 2025
VAZ018-200900-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
231 AM EST Wed Nov 19 2025
Date 11/18/25 Wed 11/19/25 Thu 11/20/25 Fri
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 42 64 43 57 50
TEMP 45 50 56 61 60 52 49 47 45 45 51 58 61 53 50 50 51 51
DEWPT 44 47 50 51 50 48 46 44 42 43 47 49 49 47 45 46 47 47
MIN/MAX RH 100 67 95 66 87
RH 96 89 80 70 69 86 89 89 89 93 86 72 65 80 83 86 86 86
WIND DIR W NW W W NW NW SE SE SE SE S S S S SW SW SW SW
WIND SPD 5 5 2 4 3 2 1 1 1 1 2 2 2 1 1 1 2 2
CLOUDS B1 B1 SC SC SC SC B1 OV OV B2 B2 B2 B1 B1 B2 B2 OV OV
CLOUDS(%) 51 63 41 50 37 49 65 88 89 84 80 75 53 69 79 86 91 88
VSBY 9 7 9 10 10 10 7 8 7 10 10 10 10 10 10 10 10 10
POP 12HR 90 5 5 5 30
RAIN C C C
MIX HGT <1 <1 1 2 2 <1 <1 <1 <1 <1 <1 1 1 <1 <1 <1 <1 <1
T WIND DIR W W NW NW NW W SW SE SE S S S S SE S S S E
T WIND SPD 4 4 8 8 5 4 3 3 5 5 4 2 2 2 2 2 2 1
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 3 5 11 19 12 2 2 2 3 4 4 4 3 1 1 1 1 1
MAX LVORI 8 6 4 3 3 6 7 7 6 6 6 3 3 4 5 5 6 6
STABILITY E D B C B F F F F C C C C F F F F C
CEILING None None 1600 100 100 0 0 400
STA PRES 27.84 27.86 27.89 27.87 27.88 27.85 27.83 27.79
Date 11/21Sat 11/22/25Sun 11/23/25Mon 11/24/25Tue 11/25/25
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 65 56 67 46 63 44 63 43 58
TEMP 62 58 57 56 65 55 51 47 62 51 47 45 62 49 46 43 57 48
DEWPT 56 53 53 52 56 50 46 43 45 40 40 39 41 38 37 36 39 38
RH 81 83 86 86 73 83 83 86 54 66 76 79 46 66 71 76 51 68
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 OV B2 B1 B1 B1 B1 SC SC SC SC SC SC B1 B1 B1 B2
POP 12HR 50 80 50 30 10 10 10 20 30
RAIN C C L D C C C S S S S 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