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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1001 PM EDT Tue Oct 13 2026
VAZ046-140800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1001 PM EDT Tue Oct 13 2026
Date 10/13/26 Wed 10/14/26 Thu 10/15/26 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 63 88 66 70 61
TEMP 68 65 64 63 79 86 86 75 71 69 67 66 69 69 68 66 64 63 63 64
DEWPT 61 60 59 58 61 65 66 67 65 66 65 64 65 64 64 65 64 63 63 64
MIN/MAX RH 86 48 95 84 100
RH 78 84 84 84 54 50 51 76 81 90 93 93 87 84 87 97100100100100
WIND DIR SW SW SW W W W SW SW W W N NE NE NE NE NE E S SW SW
WIND SPD 5 5 5 5 6 6 6 5 3 3 4 6 8 6 5 3 2 1 6 10
WIND GUST 20
CLOUDS CL CL CL CL CL CL CL CL FW SC SC SC B1 B2 B2 B1 B2 B1 B1 SC
CLOUDS(%) 2 1 1 0 2 3 4 5 23 35 32 26 66 75 78 69 72 65 58 39
VSBY 10 10 10 10 10 7 7 7 7 7 7 7 10 10 10 10
POP 12HR 0 0 5 20 10
RAIN SHWRS IS IS
MIX HGT <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 2 2 2 1
T WIND DIR SW SW SW SW NW W W SW W W SW W NE NE NE E
T WIND SPD 5 5 5 4 11 11 13 4 4 4 3 3 10 12 11 8
DISPERSION PR PR PR PR VP VP VP VP VP VP PR
ADI 3 3 3 5 23 46 55 2 2 2 2 4 18 24 22 4
MAX LVORI 5 6 6 6 2 1 1 4 5 6 7 8 4 4 4 8
STABILITY F F F B B B B F G G F B D D D F
CEILING None None None None None 800 500 500
STA PRES 29.32 29.34 29.30 29.34 29.34 29.40 29.41
Date 10/16Sat 10/17/26Sun 10/18/26Mon 10/19/26Tue 10/20/26
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 84 47 59 36 60 39 65 46 70
TEMP 83 64 52 48 56 49 41 37 57 51 42 41 62 56 49 48 67 60
DEWPT 66 52 42 38 35 36 33 33 35 38 37 38 46 48 47 47 52 53
RH 57 65 69 68 45 61 73 85 43 61 82 89 56 74 93 96 59 78
WIND SPD 15> <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW FW CL CL CL CL CL CL FW FW FW SC SC FW FW
POP 12HR 5 20 0 0 0 0 0 0 0
RAIN SHWRS 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