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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 PM EDT Tue Oct 20 2026
VAZ018-210800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
901 PM EDT Tue Oct 20 2026
Date 10/20/26 Wed 10/21/26 Thu 10/22/26 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
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 43 72 42 71 44
TEMP 51 48 45 43 55 66 68 57 51 49 46 45 61 70 68 56 52 51 49 48
DEWPT 38 37 36 35 39 39 39 39 38 37 36 34 34 36 39 38 38 39 38 39
MIN/MAX RH 73 31 67 29 72
RH 61 65 70 73 55 37 34 51 61 63 68 65 36 29 34 51 59 63 66 71
WIND DIR NE NE NE N NE N N NW NW NW NW NW NW NW NW NW NW NW NW N
WIND SPD 5 4 4 4 4 4 4 6 4 5 6 5 3 3 4 5 3 2 2 2
WIND GUST 18
CLOUDS CL CL CL CL CL CL CL CL CL CL FW FW FW CL CL CL CL FW FW FW
CLOUDS(%) 2 2 1 2 1 3 3 1 4 4 11 6 9 1 2 0 4 13 11 10
VSBY 10 10 10 10 10 10 10 10 10 9 9 0 3 10 10 10 10 3 10
POP 12HR 0 0 0 0 0
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 1 3 3 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW
T WIND SPD 2 2 2 2 2 3 3 3 4 5 6 8 6 6 13 8
DISPERSION PR VP VP PR VP PR PR PR VP VP VP
ADI 1 1 1 2 5 11 12 2 2 3 3 8 13 26 49 4
MAX LVORI 3 5 6 6 3 2 2 2 3 3 3 3 2 2 1 2
STABILITY G G G B A B A G G G F B B B B F
CEILING None None None None None None None None
STA PRES 27.98 27.95 27.88 27.89 27.87 27.91 27.89
Date 10/23Sat 10/24/26Sun 10/25/26Mon 10/26/26Tue 10/27/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 66 37 61 38 66 41 71 46 68
TEMP 65 50 43 38 60 49 42 39 64 53 46 42 69 58 50 47 67 53
DEWPT 41 46 42 38 43 43 40 39 44 46 43 41 46 49 47 47 52 49
RH 41 86 96100 53 80 93100 48 77 89 96 44 72 89100 59 86
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL CL CL CL CL FW SC FW FW FW FW FW SC SC SC SC
POP 12HR 0 0 0 0 0 0 0 0 0
$$
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