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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
132 AM EDT Thu Mar 12 2026
NCZ001-130800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
132 AM EDT Thu Mar 12 2026
Date 03/11/26 Thu 03/12/26 Fri 03/13/26 Sat
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 32 37 26 50 36
TEMP 55 49 37 28 28 33 31 29 28 27 28 37 46 48 44 42 41 39 37
DEWPT 50 46 35 26 19 13 12 13 16 16 16 18 23 25 28 28 30 31 30
MIN/MAX RH 93 42 61 38 78
RH 83 89 92 92 68 43 45 51 60 63 60 46 40 40 53 57 65 73 75
WIND DIR W NW NW NW NW NW NW NW W S S S SW SW W W W NW NW
WIND SPD 16 19 27 34 32 27 20 11 8 10 14 20 20 20 18 20 20 18 13
WIND GUST 27 31 41
CLOUDS OV OV OV OV SC CL CL CL FW FW FW FW FW FW CL FW FW FW SC
CLOUDS(%) 100100 97 91 41 4 4 4 10 7 10 12 22 25 4 6 14 24 49
VSBY 10 5 5 8 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 90 0 0 0
RAIN SHWRS O O O
SNOWSHWRS IS
MIX HGT 1 <1 1 2 4 5 2 <1 <1 <1 <1 2 5 5 2
T WIND DIR SW NW NW NW NW NW NW NW SW S S S SW SW SW
T WIND SPD 11 18 23 32 34 34 14 10 2 4 9 12 14 16 9
DISPERSION GD GD GD FR PR FR GD GD GD GD
ADI 10 16 35 57 94102 20 7 2 3 10 22 44 48 10
MAX LVORI 4 5 4 4 1 1 2 3 3 3 2 2 1 1 2
STABILITY D D D D D D D E E E D D D D D
CEILING 200 200 None None None None None None
STA PRES 26.53 26.63 26.67 26.75 26.74 26.74 26.66
Date 03/14Sun 03/15/26Mon 03/16/26Tue 03/17/26Wed 03/18/26
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 57 40 54 36 48 18 31 19 39
TEMP 53 50 43 42 51 53 49 48 38 33 23 19 27 26 23 22 36 34
DEWPT 31 35 35 37 43 45 48 44 29 16 12 7 4 5 7 9 13 18
RH 43 56 73 82 74 74 96 86 70 49 62 59 37 40 50 57 38 51
WIND SPD <15 <15 <15 15> 15> 15> 15> <15 <15
AVG CLOUDS SC SC FW SC B1 B2 B2 B2 B2 B1 SC B1 SC FW SC SC B1 SC
POP 12HR 0 0 20 70 60 20 10 5 10
RAIN SHWRS IS SC NM NM
SNOWSHWRS SC 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