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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Fri Apr 10 2026
NCZ001-110800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
131 AM EDT Fri Apr 10 2026
Date 04/09/26 Fri 04/10/26 Sat 04/11/26 Sun
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 40 66 47 67 49
TEMP 42 41 43 57 64 64 56 52 50 50 51 60 66 64 58 54 51 49 51
DEWPT 26 25 26 29 30 31 33 35 34 36 38 40 42 43 43 44 43 42 44
MIN/MAX RH 54 27 63 45 79
RH 53 52 51 34 28 29 42 52 54 58 61 47 42 46 57 69 74 77 77
WIND DIR S SW W NW W W W W W NW NW NW NW NW NW N SE SE SE
WIND SPD 5 5 6 5 4 6 9 10 11 11 11 11 9 6 5 5 5 6 9
CLOUDS CL CL CL CL CL CL CL FW FW FW SC SC SC SC FW FW FW FW FW
CLOUDS(%) 0 0 0 0 5 5 0 12 15 8 32 29 35 35 22 11 8 14 19
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 20 5
RAIN SHWRS IS IS
MIX HGT <1 <1 <1 2 5 5 <1 <1 <1 <1 <1 3 5 4 <1
T WIND DIR S SW W NW W W W W NW NW NW NW NW NW NW
T WIND SPD 3 2 3 6 8 8 3 4 5 6 8 12 14 8 4
DISPERSION PR PR PR FR FR FR PR PR PR PR
ADI 2 1 3 21 54 53 2 3 4 5 6 37 80 40 2
MAX LVORI 2 2 2 2 1 1 2 2 3 3 3 1 1 1 3
STABILITY F F A A A A E E E E C C B B F
CEILING None None None None None None None None
STA PRES 26.95 26.98 26.92 26.94 26.92 26.97 26.95
Date 04/12Mon 04/13/26Tue 04/14/26Wed 04/15/26Thu 04/16/26
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 68 51 68 52 74 55 75 56 73
TEMP 67 62 55 54 65 63 55 56 71 66 58 58 73 68 59 59 70 65
DEWPT 43 41 40 42 41 43 43 45 47 48 47 48 46 46 46 49 48 48
RH 42 46 57 64 41 48 64 66 42 52 67 69 38 45 62 69 45 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B2 B1 SC SC SC SC SC SC SC SC B1 B1 B1 B1
POP 12HR 0 0 5 0 10 0 5 5 20
RAIN SHWRS IS
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