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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
832 PM EDT Fri Mar 13 2026
NCZ001-140800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
832 PM EDT Fri Mar 13 2026
Date 03/13/26 Sat 03/14/26 Sun 03/15/26 Mon
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 37 57 42 53 42
TEMP 43 41 39 37 45 54 55 49 47 45 44 43 45 49 51 53 51 51 54 52
DEWPT 31 33 32 31 30 31 35 37 37 36 37 39 42 45 46 48 50 51 52 51
MIN/MAX RH 77 42 88 76 100
RH 62 73 76 79 55 41 47 63 68 70 76 86 89 86 83 83 96100 93 96
WIND DIR W W NW NW NW W S S SE SE SE SE SE SE SE SE SE S S S
WIND SPD 26 26 21 13 10 5 9 13 13 14 14 14 19 20 21 25 27 29 33 33
CLOUDS CL FW FW SC SC SC FW FW FW FW SC B1 B2 B2 B2 OV OV OV B2 OV
CLOUDS(%) 5 19 22 46 41 27 19 12 10 11 41 68 74 77 82 88 88 90 84 98
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 9 6 6 10
POP 12HR 0 0 0 40 70
RAIN SHWRS SC SC NM NM NM NM O
MIX HGT 2 1 1 <1 1 3 5 <1 <1 <1 <1 <1 1 2 3 2
T WIND DIR W W W NW NW W SW S SE SE S S S S SE SE
T WIND SPD 13 12 11 10 19 10 6 11 9 10 11 10 19 13 12 12
DISPERSION GD GD GD FR FR GD GD GD GD GD GD
ADI 15 14 10 11 37 40 28 10 8 9 10 11 28 28 31 0
MAX LVORI 2 3 4 4 1 1 2 2 3 3 4 5 4 4 3 6
STABILITY D D D D C B C D D D D D D D D A
CEILING None None None None None None 24100 400 300
STA PRES 26.65 26.68 26.77 26.77 26.80 26.76 26.76 26.66
Date 03/16Tue 03/17/26Wed 03/18/26Thu 03/19/26Fri 03/20/26
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 52 14 23 14 38 27 49 37 54
TEMP 45 35 21 17 21 21 18 19 34 33 30 31 47 45 40 39 51 48
DEWPT 42 23 10 5 2 1 3 3 9 16 18 23 31 34 34 34 36 36
RH 89 61 62 58 43 41 51 49 35 49 60 72 53 65 79 82 56 63
WIND SPD 15> 15> 15> <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B2 B1 B1 SC SC B1 SC SC SC B1 SC FW FW FW SC B1
POP 12HR 100 20 5 0 5 5 5 5 20
RAIN SHWRS O IS IS
SNOWSHWRS NM IS
TSTMS IS 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