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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 AM EST Thu Nov 20 2025
VAZ020-202100-
RAWS 441801
37.99N 79.76W Elev. 2160 ft
601 AM EST Thu Nov 20 2025
Date Thu 11/20/25 Fri 11/21/25 Sat 11/22/25
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 55 45 61 53 62
TEMP 43 46 52 53 49 48 47 47 48 52 58 60 57 57 57 56 54 57 61 58 50
DEWPT 42 43 46 46 44 43 43 43 45 49 52 53 52 52 52 52 50 50 46 41 38
MAX/MIN RH 73 94 76 87 54
RH 96 89 80 77 83 83 86 86 89 89 80 78 83 83 83 86 86 77 58 53 63
WIND DIR SW S SW SW SW SW W W SW SW SW SW SW SW W W W W NW NW NW
WIND SPD 5 5 4 3 2 2 2 2 2 2 2 2 2 2 3 3 2 2 2 2 2
CLOUDS OV OV B2 SC B2 B2 OV OV OV OV OV B2 OV OV B2 B2 B1 B1 B1 SC SC
CLOUDS(%) 100100 72 46 74 84100100100 92 91 87 89 93 84 80 61 61 56 38 40
VSBY 3 6 9 10 10 8 5 4 3 4 4 5 5 4 6 10 6 6 6 6 6
POP 12HR 5 60 70 80 40
RAIN S L L L L D D L L C C S S
Obvis PF PF
MIX HGT <1 <1 2 1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 <1 2 2 2 <1
T WIND DIR S S SW W SW W W SW SW S SW SW S SW SW W W NW NW NW NW
T WIND SPD 4 3 3 4 6 3 1 1 1 2 3 3 4 6 10 6 11 17 8 9 8
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 5 4 6 6 3 2 1 1 1 2 3 3 2 3 5 3 9 37 22 26 4
MAX LVORI 9 6 4 4 5 5 5 5 6 7 5 4 5 5 5 6 5 3 2 2 3
STABILITY D D D C F F D D D C C C F F F F C C C B G
CEILING 700 600 600 600 600 500 400 300 1900 None
STA PRES 27.94 27.90 27.91 27.87 27.84 27.75 27.67 27.64 27.74 27.80
Date Sun 11/23/25Mon 11/24/25Tue 11/25/25Wed 11/26/25
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 37 59 38 60 42 55 47 62
TEMP 43 38 58 47 43 38 59 48 44 43 52 48 49 48 61 52
DEWPT 36 33 33 32 32 32 33 32 32 36 41 41 43 44 47 41
RH 76 82 39 56 65 79 37 54 62 76 66 77 80 86 60 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC SC B1 B2 B2 B2 B2 B2 B1 B1 SC
POP 12HR 10 5 5 10 20 40 50 20
RAIN S C C C C 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