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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Oct 28 2026
VAZ046-282000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 AM EDT Wed Oct 28 2026
Date Wed 10/28/26 Thu 10/29/26 Fri 10/30/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 67 48 73 47 80
TEMP 58 65 65 58 54 51 50 49 64 71 72 59 54 52 50 48 70 79 77 63
DEWPT 53 52 52 53 52 51 50 49 55 54 53 53 52 50 47 45 48 49 52 51
MAX/MIN RH 61 100 51 96 36
RH 83 63 63 83 93100100100 73 55 51 80 93 93 89 89 45 35 42 65
WIND DIR NE E E NE NE NE NW NW W SW SW S SW SW W W NW NW NW NE
WIND SPD 4 4 3 2 2 1 1 1 2 4 4 2 2 3 3 3 3 2 2 1
CLOUDS B2 B1 B2 B1 B1 SC B1 B1 SC SC FW CL CL FW FW CL CL CL FW FW
CLOUDS(%) 83 68 83 65 65 46 65 57 34 28 25 1 3 12 7 4 5 2 12 21
VSBY 5 10 10 10 10 9 6 5 7 10 10 10
POP 12HR 0 5 0 0 0
MIX HGT 1 3 2 <1 <1 <1 <1 <1 2 4 3 <1 <1 <1 <1 <1 <1 3 2 <1
T WIND DIR NE E E NE N N N N W W SW SW SW SW SW W W NW NW N
T WIND SPD 4 5 4 3 3 2 2 2 3 6 5 2 3 3 2 2 2 5 6 14
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 7 13 13 2 2 1 1 2 8 30 20 1 2 2 1 2 3 24 16 7
MAX LVORI 4 2 2 5 8 10 10 10 3 2 2 5 7 7 7 6 2 2 2 3
STABILITY D D C F F F F C B B B G G G G B B B B G
CEILING 700 700 9200 1500 None None None None None None
STA PRES 29.68 29.63 29.63 29.58 29.57 29.49 29.47 29.44 29.46 29.45
Date Sat 10/31/26Sun 11/01/26Mon 11/02/26Tue 11/03/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 47 67 45 67 51 67 52 70
TEMP 53 48 65 57 48 46 64 59 53 53 65 60 55 54 67 63
DEWPT 46 42 42 47 47 46 51 53 53 53 58 57 55 54 60 58
RH 77 80 43 69 96100 63 80100100 78 90100100 78 84
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC B1 B2 B2 B2 B1 B1 B2 B2 B2 B2 B2 B1 B1 B1
POP 12HR 0 0 0 10 40 40 30 20
RAIN SHWRS SC SC SC SC SC SC IS 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