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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1132 AM EDT Fri Mar 13 2026
NCZ018-132000-
RAWS 311941
36.22N 81.63W Elev. 3254 ft
1132 AM EDT Fri Mar 13 2026
Date Fri 03/13/26 Sat 03/14/26 Sun 03/15/26
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 53 36 60 41 57
TEMP 49 53 47 43 41 39 36 52 60 58 51 47 45 43 42 49 53 56 54
DEWPT 25 27 29 32 34 34 32 34 37 38 38 38 38 39 40 45 48 49 49
MAX/MIN RH 36 84 42 92 76
RH 39 36 49 65 76 82 85 50 42 47 61 71 76 86 93 86 83 77 83
WIND DIR SW SW W W W W NW NW W S S SE SE SE SE SE SE SE SE
WIND SPD 18 17 10 10 10 9 5 4 3 5 4 2 2 3 3 10 14 14 12
WIND GUST 29 29 24 25 27 21 14 12 12 13 23 26 27 28
CLOUDS FW CL CL CL FW FW SC SC SC FW FW FW SC B1 B1 B2 B2 B2 B2
CLOUDS(%) 11 3 3 3 21 25 39 28 31 14 9 8 39 51 66 77 87 85 85
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 40
RAIN SHWRS IS IS SC SC SC
MIX HGT 3 5 1 2 1 <1 <1 2 4 4 <1 1 <1 <1 <1 1 2 5 3
T WIND DIR SW SW SW W W NW NW W SW S S S S S S SE S SE SE
T WIND SPD 19 25 10 13 14 13 9 10 8 13 9 6 6 9 6 5 10 6 8
DISPERSION FR FR FR PR VP VP VP VP FR
ADI 50 75 7 9 10 6 10 25 31 67 4 3 3 4 5 9 22 20 11
MAX LVORI 1 1 2 3 3 4 4 2 1 1 3 3 4 5 6 4 3 3 4
STABILITY D D E E E F B B C B G G G F C D D D D
CEILING None None None None None None None 200 100
STA PRES 26.80 26.83 26.87 26.96 26.96 26.99 26.96 26.95 26.86
Date Mon 03/16/26Tue 03/17/26Wed 03/18/26Thu 03/19/26
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 51 56 18 29 18 41 30 52
TEMP 54 55 51 36 24 19 27 24 20 20 39 35 31 32 50 44
DEWPT 53 53 47 25 13 6 4 2 4 3 8 18 20 24 33 36
RH 96 93 86 64 62 56 37 38 49 47 27 49 63 72 52 73
WIND SPD 15> 15> 15> 15> <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 B2 B1 B1 SC FW SC B1 SC SC SC B1 B1 B1
POP 12HR 80 80 30 5 0 5 5 5
RAIN SHWRS SC O O NM
SNOWSHWRS SC
TSTMS SC
$$
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