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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Tue Oct 13 2026
VAZ024-140800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
131 AM EDT Tue Oct 13 2026
Date 10/12/26 Tue 10/13/26 Wed 10/14/26 Thu
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 52 84 57 88 65
TEMP 58 57 55 70 80 82 73 67 64 62 60 75 84 86 78 69 67 66 65
DEWPT 55 53 53 61 62 63 62 61 60 59 59 64 65 66 67 66 66 65 65
MIN/MAX RH 98 50 99 50 99
RH 90 86 93 73 54 53 68 81 87 90 96 69 53 51 69 90 97 97100
WIND DIR W NW NW W SW SW W SW W W SW W W W W N N N N
WIND SPD 2 2 2 2 3 3 3 3 2 2 2 2 4 4 3 0 0 0 0
CLOUDS FW FW CL CL CL CL CL CL CL CL CL CL FW FW FW SC SC B1 B2
CLOUDS(%) 19 8 3 5 2 1 2 1 2 1 2 1 8 9 16 27 38 51 80
VSBY 10 10 10 10 10 10 10 10 10 10 7 7 7 7 7 7 7 7 7
POP 12HR 0 0 0 0 20
RAIN SHWRS IS IS NM
MIX HGT <1 <1 <1 1 4 2 <1 <1 <1 <1 <1 2 3 3 <1
T WIND DIR NW NW NW W W W SW W W NW W W W W W
T WIND SPD 4 4 4 5 13 14 4 4 4 5 4 11 16 13 4
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 2 4 10 63 45 2 2 2 3 5 29 68 49 2
MAX LVORI 9 9 9 4 1 1 5 6 9 8 7 3 1 1 3
STABILITY G G A A B B G G G G B B B B G
CEILING None None None None None None None None
STA PRES 28.51 28.53 28.48 28.50 28.51 28.55 28.51
Date 10/15Fri 10/16/26Sat 10/17/26Sun 10/18/26Mon 10/19/26
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 77 61 83 43 62 34 63 36 68
TEMP 76 68 64 63 81 63 49 43 59 52 40 35 61 49 41 37 67 56
DEWPT 67 66 64 63 63 50 41 37 34 35 34 32 36 38 37 35 43 46
RH 74 93100100 54 62 74 79 39 52 79 89 39 66 85 92 42 69
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B1 SC SC SC FW FW CL CL CL CL CL FW FW FW SC
POP 12HR 70 30 5 5 0 0 0 0 0
RAIN SHWRS NM NM SC
TSTMS 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