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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
631 AM EDT Mon Oct 19 2026
VAZ024-192000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
631 AM EDT Mon Oct 19 2026
Date Mon 10/19/26 Tue 10/20/26 Wed 10/21/26
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 39 73 41 69
TEMP 34 55 66 67 52 46 43 41 40 60 73 72 56 50 46 43 41 58 68 69 56
DEWPT 31 33 35 36 36 36 35 33 32 39 40 44 43 44 44 42 41 47 43 42 43
MAX/MIN RH 30 75 31 100 37
RH 89 43 32 32 54 68 73 73 73 46 30 37 62 80 93 96100 67 40 37 62
WIND DIR NW N N NE N NW NW NW NW N N NE N N N N N N N NE N
WIND SPD 2 2 4 3 2 2 2 2 2 3 4 3 3 2 2 2 2 2 3 1 1
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 1 1 3 1 4 4 4 3 2 1 4 2 3 3 3 1 2 1 3 1 3
VSBY 3 10 10 10 10 9 6 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT <1 2 3 2 <1 <1 <1 <1 <1 2 3 2 <1 <1 <1 <1 <1 2 3 2 <1
T WIND DIR N NE N N NE N NW NW NW N N N N N N N N N N N NE
T WIND SPD 4 8 8 11 4 5 5 4 4 16 14 12 4 4 4 4 4 6 8 8 2
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 5 18 30 34 2 3 3 2 5 35 56 26 2 2 2 2 5 18 31 23 1
MAX LVORI 4 2 2 1 2 3 3 3 3 1 1 2 3 5 6 8 9 3 1 2 3
STABILITY B B B B G G G G B B B B G G G G B B B A G
CEILING None None None None None None None None None None
STA PRES 28.87 28.76 28.74 28.70 28.70 28.66 28.69 28.68 28.68 28.60
Date Thu 10/22/26Fri 10/23/26Sat 10/24/26Sun 10/25/26
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 38 71 41 68 38 64 37 68
TEMP 44 40 71 58 46 43 66 52 43 39 62 52 42 39 66 56
DEWPT 42 39 41 41 41 41 49 45 43 39 43 42 41 39 46 46
RH 93 96 34 53 83 93 54 77100100 50 69 96100 48 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL CL CL CL CL CL CL FW FW FW FW FW FW FW FW
POP 12HR 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