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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 AM EDT Mon Oct 19 2026
VAZ046-192000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1001 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 68 43 70 45 64
TEMP 57 64 64 50 46 45 45 45 62 70 69 54 51 49 47 46 58 64 64 54
DEWPT 38 33 34 40 38 35 33 33 41 43 46 46 47 47 45 44 47 45 44 43
MAX/MIN RH 30 72 38 97 48
RH 49 31 32 68 73 68 62 62 46 38 44 74 86 93 93 93 67 50 48 66
WIND DIR NE NE N N N N N N N N N NE N N N N N N NE NE
WIND SPD 6 8 6 4 4 5 6 6 9 9 8 5 5 5 6 6 9 8 6 3
CLOUDS CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL
CLOUDS(%) 0 0 0 0 0 0 0 1 1 1 4 1 2 2 2 2 1 2 4 3
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 0
MIX HGT 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NE N N N N NW NW NW N N N N N N N N N N N N
T WIND SPD 16 12 16 4 4 4 4 5 19 17 17 5 6 8 6 5 12 11 11 2
DISPERSION VP VP PR PR PR PR PR PR VP
ADI 42 41 56 2 2 2 2 6 51 59 58 3 3 4 3 6 34 45 39 1
MAX LVORI 1 1 1 3 3 3 3 3 1 1 1 4 6 6 6 6 3 1 1 3
STABILITY C C B F F F F B C C B F F F F B C B B G
CEILING None None None None None None None None None
STA PRES 29.57 29.53 29.49 29.49 29.46 29.48 29.49 29.49 29.40
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 40 68 44 64 41 62 40 66
TEMP 44 42 68 55 46 46 63 51 44 42 60 51 43 42 64 55
DEWPT 42 41 42 42 42 45 50 46 43 41 45 44 43 42 48 47
RH 93 96 39 61 86 96 62 83 96 96 58 77100100 56 74
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL CL CL CL CL FW 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